MYSSM01204BENL DATA Sheet 1 DC-DC Converter DATA Sheet MYSSM01204BENL 1. Features ・Wide input voltage range. (17V~40V) ・Single Output Voltage/High Current(Iout=4.0A) and Surface Mount Type of Non-insulated DC-DC Converter. ・Ultra small size and low profile. ・High Efficiency product. ・Wide adjustable output voltage by connecting external resistors. (5.0 to 12.0V) ・On/Off function and short circuit protection is built in. ・ 2. Appearance, Dimensions ⑬ a 6.08 b b ⑨ a a a b b MYSSM 01204BEN L MURATA □□□□□□ (3.17) b b b a a a ① 6.08 ④ b a b a b 12.0 max. 30.2±0.6 << Top View >> a b a ⑧ Projection of solder (3.17) 22.0 max. ⑯ a a a b b b 20.9±0.4 (The soldering part with the case is excluded.) (3.17) (3.17) a=1.0 b=1.54 << Bottom View >> Top of pin 0.15 max. 【Unit：mm】 Tolerance ±0.3mm Toleranc is not accumulated. Note: 1. This datasheet is downloaded from the website of Murata Manufacturing co., ltd. Therefore, it’ s specifications are subject to change or our products in it may be discontinued without advance notice. Please check with our sales representatives or product engineers before ordering. 2014.2.8 MYSSM01204BENL DATA Sheet 2 2014.2.8 Marking (1) Manufacturer Parts No. (2) Manufacturer ID MYSSM01204BENL MURATA (3) Identification Mark □ (3) Lot No. ■■■■■■ ①②③④④④ ①Production factory Mark ②Production Year ③Production Month(1,2,3,･･････,9,O,N,D) ④Production Lot No. ○ (4) Pin No.1 Side Marking Pin Number and Function Pin No. Symbol Function 1,2,3 Vin Input 4,5,6,7,13,14,15.16 GND GND 8 VAR Output voltage adjustment 9 ON/OFF Remote ON/OFF 10,11,12 Vout Output 3. Block Diagram Vout Vin 1,2,3 10,11,12 VAR 8 13,14,15,16 4,5,6,7 GND GND Control Circuit 9 ON/OFF Note: 1. This datasheet is downloaded from the website of Murata Manufacturing co., ltd. Therefore, it’ s specifications are subject to change or our products in it may be discontinued without advance notice. Please check with our sales representatives or product engineers b efore ordering. 2. This datasheet has only typical specifications because there is no space for detailed specifications. Therefore, please approve our product specifications or transact the approval sheet for product specifications before ordering. 2014.2.8 MYSSM01204BENL DATA Sheet 3 4. Environmental Conditions 4 .1 Operating Temperature Range 4 .2 Storage Temperature Range 4 .3 Operating Humidity Range 4 .4 Storage Humidity Range 5. Absolute Maximum Rating Item Maximum Input Voltage ON/OFF o o -10 C ~ +70 C o o -20 C ~ +85 C 10% ~ 85%(No water condenses in any cases.) 5% ~ 90%(No water condenses in any cases.) Unit V V Absolute Rating 50 Vin Remarks ※No voltage, no matter how instantaneous, shall be applied beyond the absolute maximum voltage rating to this product. If you apply any voltage over this limit the product characteristics will deteriorate or the product itself will be destroyed. Even though it may continue operating for a while after the over-voltage event, its life will likely be shortened significantly. Reliability and life of the module may degrade similarly if the maximum operating voltage rating is continuously exceeded. This product is designed to operate within the maximum operating voltage rating specification. 6. Characteristics o 6.1 Electrical Characteristics (Ta=25 C) Value Item Condition Symbol Min. Typ. Max. +17.0 +24.0 +40.0 VAR=GND +11.64 +12.00 +12.36 VAR=Open +4.85 +5.00 +5.15 Unit V Input Voltage Vin Output Voltage Vout Vin=17.0~40.0V Iout=0~4.0A Output Current Iout Vin=17.0~40.0V 0 - 4.0 A Ripple Voltage Vrip Vin =24.0V, Iout=4.0A BW=20MHz - 180 - mV(p-p) Efficiency EFF Vin =24.0V, Iout=4.0A - 96 - % 2.5 - Vin - - 0.5 V OFF ON/OFF Voltage VON/OFF Vin=17.0~40.0V V ON OPen Short Circuit Protection SCP If output is shorted to GND , DC-DC Converter shall be operated in a hiccup mode. After the short circuit event has cleared, the output is automatically brought back into regulation. Note: 1. This datasheet is downloaded from the website of Murata Manufacturing co., ltd. Therefore, it’ s specifications are subject to change or our products in it may be discontinued without advance notice. Please check with our sales representatives or product engineers b efore ordering. 2. This datasheet has only typical specifications because there is no space for detailed specifications. Therefore, please approve our product specifications or transact the approval sheet for product specifications before ordering. 2014.2.8 MYSSM01204BENL DATA Sheet 4 2014.2.8 6. 2 Output Current Derating Output Current （A） 5.0 4.0 3.0 2.0 1.0 0.0 -10 0 10 20 30 40 50 60 70 80 Ta （℃） 7. Operation in information 7.1 Output Voltage Adjustment The output voltage can be adjusted ranging by connecting resistors between VAR-pin(8pin) to GND-pin. The following equation gives the required external-resistor value to adjust the output voltage to Voadj. It is strictly recommended to evaluate the characteristics of DC-DC Converter at your board conditions. MYSSM01204BENL Internal circuit Vout 11kΩ VAR pin 9.4kΩ RVAR=6.6／(Vout－5.0)－0.943（kΩ） Error amp RVAR 1.5kΩ ＜RVAR calculation example＞ Vout [V] 12.0 5.0 Calculated RVAR[Ω] 0 ∞ RVAR example 0Ω Open Note: 1. This datasheet is downloaded from the website of Murata Manufacturing co., ltd. Therefore, it’ s specifications are subject to change or our products in it may be discontinued without advance notice. Please check with our sales representatives or product engineers b efore ordering. 2. This datasheet has only typical specifications because there is no space for detailed specifications. Therefore, please approve our product specifications or transact the approval sheet for product specifications before ordering. 2014.2.8 MYSSM01204BENL DATA Sheet 5 2014.2.8 7.2 ON/OFF control ON/OFF function The DC-DC Converter can be inactive by using ON/OFF function. ON/OFF control method When ON/OFF-pin(9pin) is connected to Vin When ON/OFF-pin(9pin) is connected to GND or Open ・・・ Output Voltage=OFF ・・・ Output Voltage=ON Usage example MYSSM01204BENL Vin pin R1 or 24kΩ ON/OFF pin 22kΩ ※ R1=10kΩ ～ 100kΩ 8. Reliability 8.1 Humidity According to JIS-C-0022. 40 土2°C, 90 to 95%RH, 100 hours. Leave for 4 hours at room temperature. No damage in appearance and no deviation from electrical characteristics (section 6.1.). 8.2 Temperature Cycles Repeat cycle 5 times. Leave 2 hours at room temp. No damage in appearance and no deviation from electrical characteristics (section 6.1.). Step Condition Time 1 -40°C±3°C 30 minutes 2 Room Temp. 5-10 minutes 3 +85°C±2°C 30 minutes 4 Room Temp. 5-10 minutes 8.3 Vibration 10 to 55Hz, 1.5mm amplitude (1minute cycle), 1 hour for each of X, Y, Z directions. No damage in appearance and no deviation from electrical characteristics (section 6.1.). 8.4 Mechanical Shock 20G, 1 time for each X, Y, Z directions. No damage in appearance and no deviation from electrical characteristics (section 6.1.). Note: 1. This datasheet is downloaded from the website of Murata Manufacturing co., ltd. Therefore, it’ s specifications are subject to change or our products in it may be discontinued without advance notice. Please check with our sales representatives or product engineers b efore ordering. 2. This datasheet has only typical specifications because there is no space for detailed specifications. Therefore, please approve our product specifications or transact the approval sheet for product specifications before ordering. 2014.2.8 MYSSM01204BENL DATA Sheet 6 9. Test Circuit In the following test circuit, the initial values under item 6.1. should be met. 9.1. General Measure Circuit MYSSM01204BENL Vin + Vin ON/OFF C1 Ａ Vout + VAR GND Ｖ Ｖr RL C2 C1 ： Conductive Polymer Aluminum Solid Electrolytic Capacitor 100µF/50V （PCG1C821MCL1GS φ10×L12.7 ：nichicon） C2 ： Conductive Polymer Aluminum Solid Electrolytic Capacitor 820µF/16V （PCG1C102MNL1GS φ10×L12.7 ：nichicon） OR Aluminum Solid Electrolytic Capacitor 1000µF/16V （UCL1C102MNL1GS φ10×L13.5 ：nichicon） 9.2. Ripple Voltage Measurement Circuit L L≦3cm Ripple Voltmeter or Oscilloscope Keisokugiken RM-101 equivalent or Tektronix 460A equivalent DC-DC Converter load Terminating resistance Keisokugiken TRC-50F equivalent Output capacitor Coaxial cable（1.5D-2V，L=1.5m） A ：Output Ripple Noise B ：Output Ripple Voltage B A C ：Switching cycle C Note: 1. This datasheet is downloaded from the website of Murata Manufacturing co., ltd. Therefore, it’ s specifications are subject to change or our products in it may be discontinued without advance notice. Please check with our sales representatives or product engineers b efore ordering. 2. This datasheet has only typical specifications because there is no space for detailed specifications. Therefore, please approve our product specifications or transact the approval sheet for product specifications before ordering. 2014.2.8 MYSSM01204BENL DATA Sheet 7 10. Packaging Specification 10.1. Packing Form These are packed in a tray(See Fig.10-1) 10.2. The number of products in pack specification form 32pcs./tray If the products have fraction,may not follow this specification. 10.3. Packaging Form These trays packed products are packaging in a corrugated box altemately. 200 A 14.5 32.0 B' 32.0 B 32.0 300 32.0 283.3 32.0 A-A' Cross-section drawing 32.0 32.0 38.0 A' 44.0 44.0 44.0 34.0 183.3 B-B' Cross-section drawing Fig.10-1 Note: 1. This datasheet is downloaded from the website of Murata Manufacturing co., ltd. Therefore, it’ s specifications are subject to change or our products in it may be discontinued without advance notice. Please check with our sales representatives or product engineers b efore ordering. 2. This datasheet has only typical specifications because there is no space for detailed specifications. Therefore, please approve our product specifications or transact the approval sheet for product specifications before ordering. 2014.2.8 MYSSM01204BENL DATA Sheet 8 11. Production factory Komatsu Murata Mfg.Co., Ltd. Kanazu Murata Mfg. Co., Ltd. Wakura Murata Mfg. Co., Ltd. Murata Electronics(Thailand).Ltd. 5.15 95 5.10 90 5.05 85 Efficiency [%] Output Volage [V] 12. Characteristics Data 12.1.Static Electrical Characyeristics Vin=17V～40V, Vout=5.0V （Ta=25℃, Cin 50CE220KX×5, Cout= 16CE330KX×4, RVAR=Open） 5.00 80 4.95 75 4.90 70 4.85 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 65 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 Iout [A] Iout [A] Vin=17V Vin=24V Vin=40V Fig.12-1-1. Output Voltage vs. Output Current Vin=17V Vin=24V Vin=40V Fig.12-1-2. Efficiency vs. Output Current 100 Ripple Voltage [mVp-p] 90 80 70 60 50 40 30 20 10 0 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 Iout [A] Vin=16V Vin=24V Vin=40V Fig.12-1-3. Ripple Voltage vs. Output Current Note: 1. This datasheet is downloaded from the website of Murata Manufacturing co., ltd. Therefore, it’ s specifications are subject to change or our products in it may be discontinued without advance notice. Please check with our sales representatives or product engineers b efore ordering. 2. This datasheet has only typical specifications because there is no space for detailed specifications. Therefore, please approve our product specifications or transact the approval sheet for product specifications before ordering. 2014.2.8 MYSSM01204BENL DATA Sheet 9 Vout=12.0V （Ta=25℃, Cin 50CE220KX×5, Cout= 16CE330KX×4, RVAR=GND） 12.36 100 12.24 95 Efficiency [%] Output Voltage [V] Vin=17V～40V, 2014.2.8 12.12 12.00 90 85 11.88 80 11.76 75 11.64 0.0 0.5 1.0 Vin=17V 1.5 2.0 Iout [A] 2.5 Vin=24V 3.0 3.5 Vin=40V Fig.12-1-4. Output Voltage vs. Output Current 70 0.0 0.5 Vin=17V 1.0 1.5 2.0 Iout [A] Vin=24V 2.5 3.0 3.5 Vin=40V Fig.12-1-5. Efficiency vs. Output Current 120 110 Ripple Voltage [mVp-p] 100 90 80 70 60 50 40 30 20 10 0 0.0 0.5 Vin=17V 1.0 1.5 2.0 2.5 Iout [A] Vin=24V 3.0 3.5 Vin=40V Fig.12-1-6. Ripple Voltage vs. Output Current Note: 1. This datasheet is downloaded from the website of Murata Manufacturing co., ltd. Therefore, it’ s specifications are subject to change or our products in it may be discontinued without advance notice. Please check with our sales representatives or product engineers b efore ordering. 2. This datasheet has only typical specifications because there is no space for detailed specifications. Therefore, please approve our product specifications or transact the approval sheet for product specifications before ordering. 2014.2.8 MYSSM01204BENL DATA Sheet 10 2014.2.8 12.2.Dynamic Electrical Characyeristics Vin=17V, Vout=5.0V （Ta=25℃, Cin 50CE220KX×5, Cout= 16CE330KX×4, RVAR=Open） Vin(20V/div) Vin(20V/div) Vout(2V/div) Vout(2V/div) 4ms/div 4ms/div Fig.12-2-1. Start-up Waveform (Io=0A) Fig.12-2-2. Start-up Waveform (Io=3.5A) Vin(20V/div) Vin(20V/div) ON/OFF(2V/div) ON/OFF(2V/div) Vout(2V/div) Vout(2V/div) 4ms/div 4ms/div Fig.12-2-3. Start-up Waveform (Io=0A) Fig.12-2-4. Start-up Waveform (Io=3.5A) Vout(50mV/div) Iout(5A/div) Vout(50mV/div) Iout(5A/div) 40us/div 40us/div Fig.12-2-5. Load Transient Response (Io= 0 → 3.5A) Fig.12-2-6. Load Transient Response (Io= 3.5A → 0) Note: 1. This datasheet is downloaded from the website of Murata Manufacturing co., ltd. Therefore, it’ s specifications are subject to change or our products in it may be discontinued without advance notice. Please check with our sales representatives or product engineers b efore ordering. 2. This datasheet has only typical specifications because there is no space for detailed specifications. Therefore, please approve our product specifications or transact the approval sheet for product specifications before ordering. 2014.2.8 MYSSM01204BENL DATA Sheet 11 2014.2.8 Vin=24V, Vout=5.0V （Ta=25℃, Cin 50CE220KX×5, Cout= 16CE330KX×4, RVAR=Open） Vin(20V/div) Vin(20V/div) Vout(2V/div) Vout(2V/div) 4ms/div 4ms/div Fig.12-2-7. Start-up Waveform (Io=0A) Fig.12-2-8. Start-up Waveform (Io=3.5A) Vin(20V/div) Vin(20V/div) ON/OFF(2V/div) ON/OFF(2V/div) Vout(2V/div) Vout(2V/div) 4ms/div 4ms/div Fig.12-2-9. Start-up Waveform (Io=0A) Fig.12-2-10. Start-up Waveform (Io=3.5A) Vout(50mV/div) Iout(5A/div) Vout(50mV/div) Iout(5A/div) 40us/div 40us/div Fig.12-2-11. Load Transient Response (Io= 0 → 3.5A) Fig.12-2-12. Load Transient Response (Io= 3.5A → 0) Note: 1. This datasheet is downloaded from the website of Murata Manufacturing co., ltd. Therefore, it’ s specifications are subject to change or our products in it may be discontinued without advance notice. Please check with our sales representatives or product engineers b efore ordering. 2. This datasheet has only typical specifications because there is no space for detailed specifications. Therefore, please approve our product specifications or transact the approval sheet for product specifications before ordering. 2014.2.8 MYSSM01204BENL DATA Sheet 12 Vin=40V, Vout=5.0V （Ta=25℃, Cin 50CE220KX×5, Cout= 16CE330KX×4, RVAR=Open） Vin(20V/div) Vin(20V/div) Vout(2V/div) Vout(2V/div) 4ms/div Fig.12-2-13. Start-up Waveform (Io=0A) 4ms/div Fig.12-2-14. Start-up Waveform (Io=3.5A) Vin(20V/div) Vin(20V/div) ON/OFF(2V/div) ON/OFF(2V/div) Vout(2V/div) Vout(2V/div) 4ms/div Fig.12-2-15. Start-up Waveform (Io=0A) 4ms/div Fig.12-2-16. Start-up Waveform (Io=3.5A) Vout(50mV/div) Iout(5A/div) Vout(50mV/div) Iout(5A/div) 40us/div 40us/div Fig.12-2-17. Load Transient Response (Io= 0 → 3.5A) Fig.12-2-18. Load Transient Response (Io= 3.5A → 0) Note: 1. This datasheet is downloaded from the website of Murata Manufacturing co., ltd. Therefore, it’ s specifications are subject to change or our products in it may be discontinued without advance notice. Please check with our sales representatives or product engineers b efore ordering. 2. This datasheet has only typical specifications because there is no space for detailed specifications. Therefore, please approve our product specifications or transact the approval sheet for product specifications before ordering. 2014.2.8 MYSSM01204BENL DATA Sheet 13 Vin=17V, Vout=12.0V （Ta=25℃, Cin 50CE220KX×5, Cout= 16CE330KX×4, RVAR=GND） Vin(20V/div) Vin(20V/div) Vout(5V/div) Vout(5V/div) 4ms/div 4ms/div Fig.12-2-19. Start-up Waveform (Io=0A) Fig.12-2-20. Start-up Waveform (Io=3.5A) Vin(20V/div) Vin(20V/div) ON/OFF(2V/div) ON/OFF(2V/div) Vout(5V/div) Vout(5V/div) 4ms/div Fig.12-2-21. Start-up Waveform (Io=0A) 4ms/div Fig.12-2-22. Start-up Waveform (Io=3.5A) Vout(100mV/div) Iout(5A/div) Vout(100mV/div) Iout(5A/div) 40us/div 40us/div Fig.12-2-23. Load Transient Response (Io= 0 → 3.5A) Fig.12-2-24. Load Transient Response (Io= 3.5A → 0) Note: 1. This datasheet is downloaded from the website of Murata Manufacturing co., ltd. Therefore, it’ s specifications are subject to change or our products in it may be discontinued without advance notice. Please check with our sales representatives or product engineers b efore ordering. 2. This datasheet has only typical specifications because there is no space for detailed specifications. Therefore, please approve our product specifications or transact the approval sheet for product specifications before ordering. 2014.2.8 MYSSM01204BENL DATA Sheet 14 Vin=24V, Vout=12.0V （Ta=25℃, Cin 50CE220KX×5, Cout= 16CE330KX×4, RVAR=GND） Vin(20V/div) Vin(20V/div) Vout(5V/div) Vout(5V/div) 4ms/div 4ms/div Fig.12-2-25. Start-up Waveform (Io=0A) Fig.12-2-26. Start-up Waveform (Io=3.5A) Vin(20V/div) Vin(20V/div) ON/OFF(2V/div) ON/OFF(2V/div) Vout(5V/div) Vout(5V/div) 4ms/div Fig.12-2-27. Start-up Waveform (Io=0A) 4ms/div Fig.12-2-28. Start-up Waveform (Io=3.5A) Vout(100mV/div) Iout(5A/div) Vout(100mV/div) Iout(5A/div) 40us/div 40us/div Fig.12-2-29. Load Transient Response (Io= 0 → 3.5A) Fig.12-2-30. Load Transient Response (Io= 3.5A → 0) Note: 1. This datasheet is downloaded from the website of Murata Manufacturing co., ltd. Therefore, it’ s specifications are subject to change or our products in it may be discontinued without advance notice. Please check with our sales representatives or product engineers b efore ordering. 2. This datasheet has only typical specifications because there is no space for detailed specifications. Therefore, please approve our product specifications or transact the approval sheet for product specifications before ordering. 2014.2.8 MYSSM01204BENL DATA Sheet 15 Vin=40V, Vout=12.0V （Ta=25℃, Cin 50CE220KX×5, Cout= 16CE330KX×4, RVAR=GND） Vin(20V/div) Vin(20V/div) Vout(5V/div) Vout(5V/div) 4ms/div Fig.12-2-31. Start-up Waveform (Io=0A) 4ms/div Fig.12-2-32. Start-up Waveform (Io=3.5A) Vin(20V/div) Vin(20V/div) ON/OFF(2V/div) ON/OFF(2V/div) Vout(5V/div) Vout(5V/div) 4ms/div 4ms/div Fig.12-2-33. Start-up Waveform (Io=0A) Fig.12-2-34. Start-up Waveform (Io=3.5A) Vout(100mV/div) Iout(5A/div) Vout(100mV/div) Iout(5A/div) 40us/div 40us/div Fig.12-2-35. Load Transient Response (Io= 0 → 3.5A) Fig.12-2-36. Load Transient Response (Io= 3.5A → 0) Note: 1. This datasheet is downloaded from the website of Murata Manufacturing co., ltd. Therefore, it’ s specifications are subject to change or our products in it may be discontinued without advance notice. Please check with our sales representatives or product engineers b efore ordering. 2. This datasheet has only typical specifications because there is no space for detailed specifications. Therefore, please approve our product specifications or transact the approval sheet for product specifications before ordering. 2014.2.8 MYSSM01204BENL DATA Sheet 16 13. Mounting Condition 13.1. PCB Land Pattern Recommendation 22.9 20.9 1.0 2.0 16.9 2.0 1.0 32.2 0.94 0.94 0.94 0.93 2.87 1.6 1.6 1.6 1.6 30.2 6.7 0.93 0.94 0.94 1.6 1.6 1.6 2.87 1pin 1.1 18.7 1.1 Area prohibits wirings other than land. There are wiring coppers or through-hole via at the bottom side of the DC-DC converter. When you design your PCBs, please be careful not to short the circuit of the DC-DC converter or PCBs. Note: 1. This datasheet is downloaded from the website of Murata Manufacturing co., ltd. Therefore, it’ s specifications are subject to change or our products in it may be discontinued without advance notice. Please check with our sales representatives or product engineers b efore ordering. 2. This datasheet has only typical specifications because there is no space for detailed specifications. Therefore, please approve our product specifications or transact the approval sheet for product specifications before ordering. 2014.2.8 MYSSM01204BENL DATA Sheet 17 13.2. Recommendable Condition of Soldering The following profile is recommended for the reflow of this product using Pb-free solder paste (Sn-Ag-Cu). Method : Full convection reflow soldering Reflow Soldering Profile JEDEC IPC/JEDEC J-STD-020D Table 5-2 Classification Reflow Profile Pb-Free Assembly Large Body Profile details Soldering temperature Soldering time Heating time Preheating time Programming rate Descending rate Total soldering time Times : : : : : : : : 245 oC +0/-5 oC o 30seconds, 240 to 245 C o 60 to 150 seconds, over217 C o 60o to 120 seconds,150 to 200 C 3 C / sec. Max.,217 to 245 oC o 6 C / sec. Max. o 8 minutes Max., 25 to 245 C 1time o 245 C o Parts surface temperature [ C] o 217 C 200oC 60～150 (seconds ) 150oC 60～120 (seconds) Times ※Do not vibrate for the products on reflow. Please need to take care temperature control because mounted parts may come off if the product are left under the high temperature. Do not reflow DC-DC converter as follows, because DC-DC converter may fall down from a substrate during reflowing Substrate DC-DC Converter Note: 1. This datasheet is downloaded from the website of Murata Manufacturing co., ltd. Therefore, it’ s specifications are subject to change or our products in it may be discontinued without advance notice. Please check with our sales representatives or product engineers b efore ordering. 2. This datasheet has only typical specifications because there is no space for detailed specifications. Therefore, please approve our product specifications or transact the approval sheet for product specifications before ordering. 2014.2.8 MYSSM01204BENL DATA Sheet 18 14. Notice 2014.2.8 14. 1. Both input-side and output side, please make the wiring loop between plus and minus as small as possible. The influence of leakage inductance can be reduced. 14. 2. Please design the print pattern of the main circuit as wide and short as possible. 14. 3. Please do not use a connector or a socket for connection with your board of this product. Electrical performance may be deteriorated the influence of contact resistance. Please be sure to mount this product with solder. 14. 4. Be sure to provide an appropriate fail-safe function on your product to prevent a second damage that may be caused by the abnormal function or the failure of our product. 14. 5. Inrush current protection is not a feature of this product. 14. 6. Please connect the input terminal with proper polarity. If you connect wrong polarity, the DC-DC Converter may be broken. In the case of the DC-DC Converter is damaged, abnormal input current may flow in, and abnormal overheat of the DC-DC Converter, or some damage of your products may occur. Please use a diode and a fuse to as following figure. fuse diode + + IN OUT - - + Load ※Please select diode and fuse after confirming the operation. 14. 7 Cleaning Please use no-cleaning type flux and do not wash this product. 14. 8 Storage 14.8.1. Please store the products in room where the temperature/humidity is stable and direct sunlight cannot come in, and use the products within 6 months after delivery. Please avoid damp and heat or such places where the temperature greatly changes, as water may condense on this product, and the quality of characteristics may be reduced, and/or be the solderability may be degraded. If this product needs to be stored for a long time (more than 1 year), this product may be degraded in solderability and/or corroded. Please test the solderability of this product regularly. Baking before reflow process is unnecessary to store the products under 30℃,60%RH or less up to 6 months. In case the storage condition is over above mentioned, if these are unpacked condition, please bake them at 125℃±5℃/24hour. If these are packed in a tape, please bake them before soldering at 60℃±5℃ /168hour. 14.8.2. Please do not store this product in places such as : A dusty place, a place exposed directly to sea breeze, or in an atmosphere containing corrosive gas (Cl2,NH3,SO2,NOX and so on). Note: 1. This datasheet is downloaded from the website of Murata Manufacturing co., ltd. Therefore, it’ s specifications are subject to change or our products in it may be discontinued without advance notice. Please check with our sales representatives or product engineers b efore ordering. 2. This datasheet has only typical specifications because there is no space for detailed specifications. Therefore, please approve our product specifications or transact the approval sheet for product specifications before ordering. 2014.2.8 MYSSM01204BENL DATA Sheet 19 14. 9 Operational Environment and Operational Conditions 14. 9.1 Operational Environment The products are not waterproof, chemical-proof or rust-proof. In order to prevent leakage of electricity and abnormal temperature increase of the products, do not use the products under the following circumstances: (1) in an atmosphere containing corrosive gas (Cl2, NH3, SO2, NOX and so on). (2) in a dusty place. (3) in a place exposed to direct sunlight. (4) in such a place where water splashes or in such a humid place where water condenses. (5) in a place exposed to sea breeze. (6) in any other places similar to the above (1)through (5). 14. 9.2 Operational Conditions Please use the products within specified values (power supply, temperature, input, output and load condition, and so on). Input voltage drop for line impedance, so please make sure that input voltage is included in specified values. If you use the products over the specified values, it may break the products, reduce the quality, and even if the products can endure the condition for short time, it may cause degradation of the reliability. Also please take care that the external voltage over output voltage of DC-DC Converter does not applies to output of this DC-DC Converter. 14. 9.3 Note prior to use If you apply high static electricity, over rated voltage or reverse voltage to the products, it may cause defects in the products or degrade the reliability. Please avoid the following items: (1) over rating power supply, reverse power supply or not-enough connection of 0 V(DC) line. (2) electrostatic discharge by production line and/or operator. (3) electrified product by electrostatic induction. Do not give an excessive mechanical shock.. If you drop the products on the floor, etc., it may occur a crack to the core of inductors and monolithic ceramic capacitors. Do not give a strong shock such as a drop in handling. 14. 10 Transportation If you transport the products, please pack them so that the package will not be damaged by mechanical vibration or mechanical shock, and please educate and guide a carrier to prevent rough handling. If you transport the products to overseas (in particular, by sea), it is expected that the transportation environment will be the worst, so please pack the products, in the package designed on the consideration of mechanical strength, vibration-resistant and humidity-resistant. The package of the products which Murata sells in Japan, may not resist over seas transport. Please consult us if you are to use the Murata package of the products sold in Japan for transport to overseas. ! Note １. Murata recommends that customers ensure that the evaluation and testing of these devices are completed with this product actually assembled on their product. ２. Please contact our main sales office or nearby sales office before using our products for the applications listed below which require especially high reliability for the prevention of defects which might directly cause damage to the third party’s life, body or property or this products for any other applications that described in the above. ①Aircraft equipment ②Aerospace equipment ③Undersea equipment ④Power plant control equipment ⑤Medical equipment ⑥Transportation equipment (vehicles, trains, ships, etc.) ⑦Traffic signal equipment ⑧Disaster prevention /crime prevention equipment ⑨Data-processing equipment ⑩Application of similar complexity and/or reliability requirements to the applications listed in the above. This DATA Sheet is indicated in Apr. 2011. About the written contents, since changing without a preliminary announcement for improvement and supply are sometimes stopped, please confirm in case of ordering. If written contents are unknown, please ask to our main sales office or nearby sales office. Note: 1. This datasheet is downloaded from the website of Murata Manufacturing co., ltd. Therefore, it’ s specifications are subject to change or our products in it may be discontinued without advance notice. Please check with our sales representatives or product engineers b efore ordering. 2. This datasheet has only typical specifications because there is no space for detailed specifications. Therefore, please approve our product specifications or transact the approval sheet for product specifications before ordering. 2014.2.8