MF series : (MINI SIZE) 1. Features : A. Quick response B. Small capacitance (1PE max.) and excellent insulstion resistance (100M Ω min.) C. Low limiting voltage D. Stable against repeated surges E. No polarity 2. Applications : A. Devices connecting telecommunication telephone, fax, modem PBX ect… B. Devices connecting antenna or signal line booster, radio cassette recorder, car radio, wireless set. C. Devices that need protection against electrostatic display units, monitor TV. 3. Part Number System : MF——————201—————————M—————————2———————— A SERIES DC SPARK-OVER VOLTAGE DC SPAK-OVER VOLTAGE TOLERANCE 141 140V 721 750V L 201 200V 102 1000V 301 300V 122 1200V M ±20% N ±30% 401 400V 152 1500V 501 500V ±15% SIZE TAPING FORM 2 DO-35 4 DO-41 A AXIAL TAPING R RIDAIL TAPING 4. Initial Characteristics : TYPE DISCHARGE VOLT (DC) 1mA/LESS 1 SEC VS (V) INSULATION RESISTANCE IR Ω CAPACITANCE 1KHZ/LESS 6V MF- 141N 140 ( 98 ~ 182 ) 100MΩ≦( DC 50V ) < 1pF MF- 201M 200 ( 160 ~ 240 ) 100MΩ≦( DC 100V ) < 1pF MF- 301N 300 ( 210 ~ 390 ) 100MΩ≦( DC 100V ) < 1pF MF- 401N 400 ( 280 ~ 520 ) 100MΩ≦( DC 250V ) < 1pF MF- 501N 500 ( 350 ~ 650 ) 100MΩ≦( DC 250V ) < 1pF MF- 751N 750 ( 525 ~ 975 ) 100MΩ≦( DC 250V ) < 1pF MF-102N 1000 ( 700 ~ 1300 ) 100MΩ≦( DC 500V ) < 1pF MF- 122N 1200 ( 840 ~ 1560 ) 100MΩ≦( DC 500V ) < 1pF MF- 152N 1500 ( 1050 ~ 1950 ) 100MΩ≦( DC 500V ) < 1pF 5. Characteristics and Test Methods : ITEM STATIC LIFE COLD RESISTANCE HEAT RESISTANCE HUMIDITY RESISTANCE TEST METHOD 10KV WITH 1500pF CONDENSER IS DISCHARGED THROUGH 2K Ω RESISTOR 200 TIMES AT AN INTERVAL OF 10 SEC. STANDARD RATE-OF-CHANGE, WITHIN ±30%. INSULATION RES-ISTANCE & CAPACITANCE, CONFORMED TO RATED SPEC MEASUREMENT AFTER -40℃/1000 HRS & NORMAL TEMPERATURE/2 HRS. MEASUREMENT AFTER -125℃/1000 HRS & NORMAL TEMPERATURE/2 HRS. FEATURES ARE CONFORMED MEASUREMENT AFTER HUMIDITY TO RATED SPEC. 90~95℃ (45℃)/1000 HRS & NORMAL TEMP/2 HRS. 10 TIMES REPETITION OF CYCLE -40 TEMPERATURE ℃/30 MIN→NORMAL TEMP/2 MIN→ 125℃/30 MIN, MEASUREMENT CYCLE AFTER NORMAL TEMP/2 HRS. APPLY FLUX AND IMMERSE IN MOLTEN SOLDER260±5℃ SOLDER SOLDERABLITY FOR 3 SEC UP TO THE POINT OF 1.5MM FROM DODY. CHECK FOR SOLDER ADHESION. SOLDER HEAT LEAD WIRE IS EVENLY COVERED BY SOLDER. MEASUREMENT AFTER LEAD WIRE IS DIPPED UP TO THE POINT OF CONFORMED TO RATED 1.5MM FROM DODY INTO 260±5℃ SPEC. SOLDER ADHESION. PULL STRENGTH APPLY O.5KG LOAD FOR 10 SEC. FLEXURAL STRENGTH LEAD SEALL NOT PULL OUT BEND LEAD WIRE AT THE POINT OF OR SNAP. 2MM FROM BODY UNDER 0.25 LOAD AND BACK TO ITS ORIGINAL POINT. REPEAT 1 TIME. 6.SCOPE : This specification covers the MF.SURGE SUPPRESSOR series for manufacturing gas tube arrestors with the micro-gap system. 7.PERFORMANCE : No 1 Item Standard test condition Test condition Standard condition/temperature: 5~35℃ Best condition Requirements humidity : 45~85%RH. /temperature: 25℃ humidity : 65%RH. 2 Appearance Outer appearance shall be visually examined. No visual damage 3 DC Sparkover voltage Measure starting discharge voltage by gradually increasing applied DC voltage. Test current is 1mA max. and test period is 1 second max. Meet specified value 4 Insulation resistance Measure the insulation resistance across the terminal at regulated voltage. 5 Electrostatic capacitance 6 Cold resistance 7 Heat resistance 100MΩ Measure the electrostatic capacitance by applying 1pF or less a voltage of less than 6V (at 1KHZ) between terminals. The specimen shall be subjected to -55±3℃ for Meet specified value 1000 hours without load and then stored at room temperature and humidity for 4 hours. Thereafter, the characteristics of items 2,3,4 and 5 shall be measured. (in accordance with JIS C 0020) The specimen shall be subjected to 125±2℃ for Meet specified value 1000 hours without load and then stored at room temperature and humidity for 4 hours. Thereafter, the characteristics of items 2,3,4 and 5 shall be measured. (in accordance with JIS C 0021) No 8 9 Item Test condition Requirements Humidity resistance The specimen shall be subjected to 85±2℃ for Meet specified value 1000 hours without load and then strored at room temperature and humidity for 4 hours. Thereafter, the characteristics of items 2,3,4 and 5 shall be measured. (in accordance with JIS C 0021) Temperature cycle Repeat the temperature cycle shown below 25 Meet specified value times then store parts at room temperature and humidity for 4 hours. Thereafter, the characteristics of items 2,3,4 and 5 shall be measured. Step 1 2 Temperature -55±3℃ Period 30minutes 3 Room Temp. 125±2℃ 3minutes 30minutes 4 Room Temp 3minutes (in accordance with JIS C 0025) 10 Vibration The specimen shall be vibrated by its lead wires Meet specified value with a total amplitude of 1.5mm and a varying frequency of 10~55~10HZ (each minute) for a period of 60 minutes respectively in each X,Y and Z directions. Thereafter, the characteristics of items 2,3,4 and 5 shall be measured. (in accordance with JIS C 0040) 11 Lead wire pull strength After gradually applying a 0.51kgf load, keep the Meet specified value unit fixed for 30 seconds. Thereafter, the characteristics of items 2,3,4 and 5 shall be measured. (in accordance with JIS C 0051) No Item Test condition Requirements 12 Lead wire bending The unit shall be second with its lead wire kept Meet specified value strength vertical and a 0.25kgf weight applied below in the axial direction. The lead wire shall gradually be bent to 90℃ in one direction at a point of 3mm from the body along the radius of curvature (0.75~0.80mm), and again back to the original' position. This shall be repeated 2 times. Thereafter, the characteristics of item 2,3,4 and shall be measured. (in accordance with JIS C 0051) 13 Solderability After dipping the lead wire within 3mm of the body Lead wire is almost in 260±5℃ solder for 5±0.5 seconds, the lead wire evenly covered with shall be visually examined. solder. (in accordance with JIS C 0050, 4-6) 14 Resistance to soldering heat After dipping the lead wire within 3mm of the body Meet specified value in 350±10℃ solder for 3±1 seconds, the characteristics of items 2,3,4 and 5 shall be measured. (in accordance with JIS C 0050) 15 Surge life test Apply a standard impulse voltage (10×1000)µ sec.) of 1000V for 6 times with an interval of 30 seconds. Then change the polarity of the surge and apply the impulse again for another 6 times. And similarly, apply a impulse voltage ((100×1000) µ sec.) of 1000 V. Total number of a impulse voltage applied is 24 times. Thereafter, the characteristics of items 2,3,4 and 5 shall be measured. (See figure 1) 16 Surge current capacity Apply standard impulse current (8×20)µ sec) of 500A for 3 times with an interval of 5 minutes between each impulse. |ΔVs/Vs|≤30% Characteristics of items 1,3 and 4 must meet the specified value. No cracks and wire breaking 8. Dimensions: UNIT mm : ( 102 、122、152 ) 9.Marking : Color CODE Part number 141 Brown + Yellow 141N 201 Red 201N 301 Orange 301N 401 Yellow 401N 501 Green 501N 102 Brown + Black 102N 122 10 Brown + rED Red 122N 152 Brown + Green 152N