TM SMD2920 Surface Mount PTC Devices l l l l l R.O.C. Patent#415624 The SMD2920 Series, a polymer-based Positive Temperature Coefficient (PTC) device to protect electrical circuits against overcurrent conditions with resettable feature, is fully compatible with current industrial standards. The new designed SMD2920 Series provides surface mount overcurrent protection with superior performance. Application: The SMD2920 Series is ideal for computers and peripherals and can be applied to almost anywhere there is a low voltage power supply and a load to be protected. The solder plated termination is designed to meet or exceed solderability specifications and provide excellent solder joint inspectability. Agency Approval: UL File # E201431. CSA File # CA115375-1 ELECTRICAL CHARACTERISTICS Maximum Time To Trip Part Number I hold (A) SMD2920P030TS 0.30 SMD2920P050TS 0.50 SMD2920P075TS 0.75 SMD2920P100TS 1.10 SMD2920P125TS 1.25 SMD2920P150TS 1.50 SMD2920P185TS 1.85 SMD2920P200TS 2.00 SMD2920P200TS/24 2.00 SMD2920P250TS 2.50 SMD2920P260TS 2.60 SMD2920P300TS 3.00 SMD2920P300TS/15 3.00 Itrip Vmax I max P d max. Current (A) (Vdc) (A) (W) (A) 0.60 60 10 1.5 1.50 1.00 60 10 1.5 2.50 1.50 30 40 1.5 8.00 2.20 33 40 1.5 8.00 2.50 15 40 1.5 8.00 3.00 33 40 1.5 8.00 3.70 33 40 1.5 8.00 4.00 15 40 1.5 8.00 4.00 24 40 1.5 8.00 5.00 15 40 1.5 8.00 5.20 6 40 1.5 8.00 6.00 6 40 1.5 8.00 6.00 15 40 1.5 8.00 Time (Sec.) 3.00 4.00 0.30 0.50 2.00 2.00 2.50 5.00 5.00 10.00 10.00 20.00 20.00 Resistance R min (Ω) 1.200 0.350 0.350 0.120 0.070 0.080 0.065 0.050 0.050 0.035 0.025 0.015 0.015 R 1max (Ω) 4.800 1.400 1.000 0.410 0.250 0.230 0.150 0.125 0.125 0.085 0.075 0.048 0.048 Agency Approval UL CSA TÜV UL CSA TÜV UL CSA TÜV UL CSA TÜV UL CSA TÜV UL CSA TÜV UL CSA TÜV UL CSA TÜV UL CSA TÜV UL CSA TÜV UL CSA TÜV UL CSA TÜV UL CSA TÜV Note: I hold = Hold current: maximum current device will pass without tripping in 20℃ still air. I trip = Trip current: minimum current at which the device will trip in 20℃ still air. Vmax = Maximum voltage device can withstand without damage at rated current (I max ) I max = Maximum fault current device can withstand without damage at rated voltage (Vmax ) Pd = Power dissipated from device when in the tripped state at 20℃ still air. R min= Minimum resistance of device in initial (un-soldered) state. R 1max= Maximum resistance of device at 20℃ measured one hour after tripping or reflow soldering of 260℃ for 20 sec. Caution: Operation beyond the specified rating may result in damage and possible arcing and flame. ◎Specifications are subject to change without notice. 107 TM SMD2920 Surface Mount PTC Devices R.O.C. Patent#415624 How to Select a Polymer PTC fuse: (1) Determine the following operating parameters for the circuits: (A) Normal Operating Current (I hold) (B) Maximum Circuit Voltage (V max) (C) Maximum Interrupt Current (I max) (D) Normal Operating Temperature (min℃/max℃) (2) Select the device form factor and dimension suitable for the application: Surface Mount Device (SMD Series) Radial Leaded Device (RLD Series) Axial Leaded Strap Device (STD Series) Other Custom-designed Device (Disc/Chip) (3) Compare the maximum ratings for V max and I max of the PTC device with the circuit in application and make sure that the circuit’s requirement does not exceed the device ratings. (4) Check that the PTC device’s trip time (time-to-trip) will protect the circuit. (5) Verify that the circuit operating temperatures are within the PTC device’s normal operating temperature range. (6) Verify the performance and suitability of the chosen PTC device in the application. 108 TM SMD2920 Surface Mount PTC Devices R.O.C. Patent#415624 THERMAL DERATING CURVE FOR SMD2920 SERIES Percentage of Rated Current 200.00 150.00 100.00 50.00 0.00 -40.00 0.00 40.00 80.00 120.00 Device Ambient Temperature (℃ ) THERMAL DERATING CHART FOR SMD2920 SERIES – Ihold (Amps) Model SMD2920P030TS SMD2920P050TS SMD2920P075TS SMD2920P100TS SMD2920P125TS SMD2920P150TS SMD2920P185TS SMD2920P200TS SMD2920P200TS/24 SMD2920P250TS SMD2920P260TS SMD2920P300TS SMD2920P300TS/15 -40℃ 0.45 0.76 1.13 1.66 1.89 2.27 2.80 3.02 3.02 3.78 3.64 4.53 4.53 -20℃ 0.40 0.67 1.01 1.47 1.68 2.01 2.47 2.68 2.68 3.35 3.25 4.02 4.02 Ambient Operation Temperature 0℃ 23℃ 40℃ 50℃ 60℃ 0.35 0.30 0.25 0.23 0.20 0.59 0.50 0.42 0.38 0.33 0.88 0.75 0.62 0.56 0.50 1.29 1.10 0.91 0.83 0.73 1.46 1.25 1.04 0.94 0.83 1.76 1.50 1.25 1.13 1.00 2.17 1.85 1.54 1.39 1.22 2.34 2.00 1.66 1.50 1.32 2.34 2.00 1.66 1.50 1.32 2.93 2.50 2.08 1.88 1.65 2.91 2.60 2.26 2.08 1.95 3.51 3.00 2.52 2.26 1.99 3.51 3.00 2.52 2.26 1.99 70℃ 0.17 0.29 0.44 0.64 0.73 0.87 1.07 1.16 1.16 1.45 1.74 1.75 1.75 85℃ 0.14 0.23 0.34 0.50 0.56 0.74 0.85 0.90 0.90 1.13 1.48 1.34 1.34 109 TM SMD2920 Surface Mount PTC Devices R.O.C. Patent#415624 AVERAGE TIME-CURRENT CURVE FOR SMD2920 SERIES 100.00 J B E C D A Time to Trip (Sec.) 10.00 K HI G F A:SMD2920P030TS B:SMD2920P050TS C:SMD2920P075TS D:SMD2920P100TS E:SMD2920P150TS F :SMD2920P200TS G :SMD2920P125TS H :SMD2920P185TS I :SMD2920P250TS J :SMD2920P260TS K :SMD2920P300TS 1.00 0.10 0.01 0.10 1.00 10.00 100.00 Fault Current (Amp.) SOLDER REFLOW l Recommended reflow methods: IR, vapor phase oven, hot air oven l Devices are not designed to be wave soldered to the bottom side of the board. l Recommended maximum paste thickness is 0.25mm (0.010 inch) l Devices can be cleaned using standard industry methods and solvents. Note: If reflow temperatures exceed the recommended profile, devices may not meet the performance requirements. 110 TM SMD2920 Surface Mount PTC Devices FIGURE R.O.C. Patent#415624 SOLDER PAD LAYOUTS PHYSICAL DIMENSIONS (mm) Part Number SMD2920P030TS SMD2920P050TS SMD2920P075TS SMD2920P100TS SMD2920P125TS SMD2920P150TS SMD2920P185TS SMD2920P200TS SMD2920P250TS SMD2920P260TS SMD2920P300TS SMD2920P300TS/15 A Min. 6.73 6.73 6.73 6.73 6.73 6.73 6.73 6.73 6.73 6.73 6.73 6.73 B Max. 7.98 7.98 7.98 7.98 7.98 7.98 7.98 7.98 7.98 7.98 7.98 7.98 Min. 4.80 4.80 4.80 4.80 4.80 4.80 4.80 4.80 4.80 4.80 4.80 4.80 C Max. 5.44 5.44 5.44 5.44 5.44 5.44 5.44 5.44 5.44 5.44 5.44 5.44 Min. 0.75 0.75 0.75 0.55 0.55 0.75 0.75 0.75 0.75 0.55 0.75 0.75 Max. 1.25 1.25 1.25 1.00 1.00 1.25 1.25 1.25 1.25 1.00 1.25 1.25 D Min. 0.30 0.30 0.30 0.30 0.30 0.30 0.30 0.30 0.30 0.30 0.30 0.30 E Min. 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 Max. 2.00 2.00 2.00 2.00 2.00 2.00 2.00 2.00 2.00 2.00 2.00 2.00 ENVIRONMENTAL SPECIFICATIONS Operating/Storage Temperature Maximum Device Surface Temperature in Tripped State Passive Aging Humidity Aging Thermal Shock Solvent Resistance Vibration -40℃ to +85℃ 125℃ +85℃, 1000 hours +85℃, 85%R.H. 1000 hours MIL-STD-202 Method 107G +85℃/-40℃ 20 times MIL-STD-202, Method 215 MIL-STD-883C, Method 2007.1, Condition A ±5% typical resistance change ±5% typical resistance change -30% typical resistance change No change No change PHYSICAL SPECIFICATIONS Terminal Material Lead Solderability Packaging Solder-Plated Copper (Solder Material: 63/37 SnPb) Meets EIA Specification RS186-9E, ANSI/J-STD-002 Category 3. 16 mm tape on 7 inch reel per EIA-481-1 (equivalent to IEC286, part 3) 2000 devices per reel for P100TS, P125TS &P260 others : 1500 devices per reel ◎ Specifications are subject to change without notice. 111 SMD2920 Surface Mount PTC Devices R.O.C. Patent#415624 TAPE SPECIFICATIONS: EIA-481-1 P030TS-P075TS P050TS P100TS P150TS–P185TS P125TS P200TS–P250TS P260TS P300TS W F E1 16.0+/-0.30 16.0+/-0.30 16.0+/-0.30 7.5+/-0.05 7.5+/-0.05 7.5+/-0.05 1.75+/-0.10 1.75+/-0.10 1.75+/-0.10 D0 D1 P0 1.55+/-0.05 1.55+/-0.05 1.55+/-0.05 1.5+/-0.10 1.5+/-0.10 1.5+/-0.10 4.0+/-0.10 4.0+/-0.10 4.0+/-0.10 P1 P2 A0 8.0+/-0.10 8.0+/-0.10 8.0+/-0.10 2.0+/-0.05 2.0+/-0.05 2.0+/-0.05 5.45+/-0.10 5.45+/-0.10 5.45+/-0.10 7.65+/-0.10 7.65+/-0.10 7.65+/-0.10 0.25+/-0.10 0.25+/-0.10 0.25+/-0.10 1.25+/-0.10 1.00+/-0.10 1.45+/-0.10 B0 T K0 Leader min. Trailer min. 390 160 390 160 390 160 (mm) REEL DIMENSIONS: EIA-481-1 H W D F C H1 W1 W2 W3 W4 12.0+/-0.15 9.0+/-0.5 60+/−0.5 13.0+/-0.2 178+/-1.0 11+/-0.5 2.5+/-0.5 3.0+/-0.5 4.0+/-0.5 5.0+/-0.5 (mm) 112 SMD2920 Surface Mount PTC Devices R.O.C. Patent#415624 PART NUMBERING SYSTEM SMD 2920 P □□□ TS Solder Plated Termination Multilayer Thickness Version Current Rating Polytronics Symbol Device Dimensions: Length/Width(Unit: 1/100 inch) Surface Mount Device CROSS REFERENCE Polytronics/ EVERFUSETM SMD2920P030TS SMD2920P050TS SMD2920P075TS SMD2920P100TS SMD2920P125TS SMD2920P150TS SMD2920P185TS SMD2920P200TS SMD2920P200TS/24 SMD2920P250TS SMD2920P260TS SMD2920P300TS SMD2920P300TS/15 Cross Reference Bourns/ Multifuse® Raychem/ PolySwitch® SMD030 SMD050 SMD075 SMD100/33 SMD125 SMD150/33 (3425) SMD185 (3425) SMD200 (3425) N/A SMD250 (3425) SMD260 SMD300 N/A MF-SM030 MF-SM050(30Vdc) MF-SM075 MF-SM100(30Vdc) MF-SM125 MF-SM150(15Vdc) N/A MF-SM200 (3425) N/A MF-SM250 (3425) MF-SM260 N/A N/A “EVERFUSE” is a registered trademark of Polytronics Technology Corp. “Multifuse” is a registered trademark of Bourns , Inc. “PolySwitch” is a registered trademark of Raychem Corporation. ◎ Specifications are subject to change without notice. 113 SMD2920 Surface Mount PTC Devices 114 R.O.C. Patent#415624