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TRF250-180
Resettable Fuse, PPTC, PolySwitch TR Series, 250 VAC, 180 mA, 650 mA, 2 s, Round
⚠️ Reference pricing provided. In case of supply shortages, we will connect you with our trusted procurement partners to ensure your project's continuity.
- Manufacturer: LITTELFUSE
- Product type: Radial Leaded PPTCs
- Thermistor Mounting:Through Hole; Product Range:PolySwitch TRF250 Series; Holding Current:180mA; Tripping Current:650mA; Voltage Rating:250VAC; Operating Temperature Min:-40°C; O
- SVHC: To Be Advised
- Height: 12mm
- Length: -
- Diameter: 9mm
- Thickness: 3.8mm
- Fuse Shape: Round
- Lead Spacing: 5mm
- Time to Trip: 2s
- Trip Current: 650mA
- Product Range: PolySwitch TR Series
- Voltage Rating: 250VAC
- Holding Current: 180mA
- Current Rating Max: 10A
- Thermistor Mounting: Through Hole
- Operating Temperature Max: 85°C
- Operating Temperature Min: -40°C
- Automotive Qualification Standard: -
| Delivery and price | |
|---|---|
| Units per pack | 500 |
| Price | 0.389 € |
| Current stock | 100+ |
| Lead time | 30 days |
Datasheet
PolySwitch[®] Resettable PPTC **Datasheet** **TR Series** Radial Leaded ## RoHS | J\@OWG ACE ## **Description** Our PolySwitch families of telecommunications and networking devices help meet the growing demand for resettable overcurrent protection. These product families help provide protection against damage caused by power cross and power induction surges as defined in ITU, Telcordia GR1089 and IEC 62368-1. Our offering includes chip, surface-mount and radial-leaded configurations. ## **Applications** Networking Machines and Systems ## **Additional Information** - Modems - Phone sets - Fax machines - Phone wall outlets - Alarm systems - PBX systems - MDF modules - T1/E1 equipment - xDSL modems and splitters - Powered Ethernet systems - VoIP (Voice over Internet Protocol) equipment - LAN, WAN equipment - Customer premise equipment - Access network hardware - Analog and digital line cards **==> picture [198 x 8] intentionally omitted <==** **----- Start of picture text -----**<br> Resources Accessories Samples<br>**----- End of picture text -----**<br> ## **Features** - Resettable overcurrent protection ## **Agency Approvals** |**Agency**<br>A|**Agency File/Certificate Number**<br>E74889*| |---|---| |@.|78165*| |A|72161780*| - Fast time-to-trip - Resistance sorted and matched devices available - Low parasitic capacitance/flat impedance with frequency - Recognized to UL 1434, approved to CSA TIL No. CA-3A and EN 60730-1. - See Electrical Characteristic Table for approved part numbers. ## **Electrical Characteristics** |TRF250-055T|RF1968-000|0.055 0.170|0.055 0.170|60|250|3.0|0.6|0.28|3.5|15.0|25.0|35.0|-|-|-| |---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---| |TRF250-055UT|RF1647-000|0.055 0.170|0.055 0.170|60|250|3.0|0.6|0.28|3.0|15.0|25.0|35.0|-|-|-| |TRF250-080T|RF0124-000|0.080|0.160|60|250|3.0|0.6|0.35|4.0|15.0|22.0|33.0|x|x|x| |TRF250-080U|RF0125-000|0.080|0.160|60|250|3.0|0.6|0.35|2.5|14.0|20.0|33.0|x|x|x| |TRF250-110U|RF0126-000|0.110 0.220|0.110 0.220|60|250|3.0|0.6|1.00|0.8|5.0|9.0|16.0|x|x|x| |TRF250-120|RF0008-000|0.120|0.240|60|250|3.0|0.8|1.00|1.5|4.0|8.0|16.0|x|x|x| |TRF250-120T|RF0013-000|0.120|0.240|60|250|3.0|0.8|1.00|0.7|7.0|12.0|16.0|-|-|-| © 2021 Littelfuse, Inc. Specifications are subject to change without notice. Revised: GD. 10/29/21 PolySwitch[®] Resettable PPTC **Datasheet** **TR Series** Radial Leaded **==> picture [46 x 52] intentionally omitted <==** **==> picture [311 x 52] intentionally omitted <==** ## **Electrical Characteristics** **==> picture [506 x 444] intentionally omitted <==** **----- Start of picture text -----**<br> Part Ordering Part IH IT OperatingVMAXInterrupt InterruptIMAX PD Typ Max Time-to-trip RMIN RMAX R1MAX Agency Approvals<br>Number<br>Number<br>(A) (A) (VDC) (VRMS) (A) (W) (A) (s) (Ω) (Ω) (Ω)<br>TRF250 – Radial-leaded*— 250VAC<br>TRF250-120T-RA-B-0.5 RF0016-000 0.120 0.240 60 250 3.0 0.8 1.00 1.2 7.0 9.0 16.0 — — —<br>TRF250-120T-RC-B-0.5 RF0361-000 0.130 0.260 60 250 3.0 0.8 1.00 3.0 5.4 7.5 14.0 — — —<br>TRF250-120T-RF-B-0.5 RF0105-000 0.120 0.240 60 250 3.0 0.8 1.00 0.9 6.0 10.5 16.0 — — —<br>TRF250-120T-RH-B-0.5 RF2519-000 0.120 0.240 60 250 3.0 0.8 1.00 0.7 9.0 11.0 16.0 — — —<br>TRF250-120T-R1-B-0.5 RF0015-000 0.120 0.240 60 250 3.0 0.8 1.00 0.7 6.0 9.0 16.0 — — —<br>TRF250-120T-R2-B-0.5 RF0425-000 0.120 0.240 60 250 3.0 0.8 1.00 0.8 8.0 10.5 16.0 — — —<br>TRF250-120U RF0017-000 0.120 0.240 60 250 3.0 0.7 1.00 1.0 6.0 10.0 16.0 x x x<br>TRF250-120UT RF0018-000 0.120 0.240 60 250 3.0 0.7 1.00 0.7 7.0 12.0 16.0 — — —<br>TRF250-145 RF0021-000 0.145 0.290 60 250 3.0 0.8 1.00 2.5 3.0 6.0 14.0 x x x<br>TRF250-145-RA-B-0.5 RF0044-000 0.145 0.290 60 250 3.0 0.8 1.00 2.5 3.0 6.0 12.0 — — —<br>TRF250-145T RF0022-000 0.145 0.290 60 250 3.0 0.8 1.00 1.5 5.4 7.5 14.0 — — —<br>TRF250-145U RF0027-000 0.145 0.290 60 250 3.0 0.7 1.00 2.0 3.5 6.5 14.0 x x x<br>TRF250-180 E46226-000 0.180 0.650 100 250 10.0 0.9 3.00 0.5 0.8 2.2 4.0 x x x<br>TRF250-183 [‡] RF0768-000 0.183 0.685 100 250 10.0 0.9 3.00 0.6 0.8 2.0 3.4 x x x<br>‡<br>TRF250-183U RF0770-000 0.183 0.685 100 250 10.0 0.9 3.00 0.6 0.8 2.0 3.4 x x x<br>TRF250-184‡ RF1135-000 0.184 1.000 100 250 10.0 0.9 3.00 0.5 1.2 2.4 3.1 x x x<br>TRF600 – Radial-leaded†— 600VAC<br>TRF600-150 A87878-000 0.150 0.300 250 600 3.0 1.4 1.0 1.4 6.0 10.0 17.0 x x x<br>TRF600-150-RB F95456-000 0.150 0.300 250 600 3.0 1.4 1.0 1.0 9.0 12.0 22.0 — — —<br>TRF600-150-R2-B-0.5 RF0023-000 0.150 0.300 250 600 3.0 1.4 1.0 1.3 7.0 10.0 17.0 — — —<br>TR600-150F-EX RF1302-000 0.150 0.300 250 600 3.0 1.4 1.0 5.0 6.0 12.0 22.0 — — —<br>TR600-150F-EX-RB RF3620-000 0.150 0.300 250 600 3.0 1.4 1.0 5.0 9.0 12.0 22.0 — — —<br>TRF600-160 RF0071-000 0.160 0.320 250 600 3.0 1.7 1.0 7.5 4.0 10.0 18.0 x x x<br>TRF600-160-RA RF0170-000 0.160 0.320 250 600 3.0 1.7 1.0 9.5 4.0 7.0 16.0 — — —<br>TRF600-250 RF1926-000 0.250 0.850 250 600 3.0 2.0 3.0 1.0 1.0 4.3 7.0 x x x<br>TRF600-400 RF0965-000 0.400 1.000 60 600 3.0 2.4 3.0 4.0 0.95 1.45 1.90 x x x<br>**----- End of picture text -----**<br> ## **Notes:** IH : Hold current: maximum current device will pass without interruption in 20°C still air. IT : Trip current: minimum current that will switch the device from low resistance to high resistance in 20°C still air. VMAX Operating : Maximum continuous voltage device can withstand without damage at rated current. This voltage is used for component Recognition under UL1434. VMAX Interrupt : Maximum voltage that can be safely placed across a device in its tripped state. IMAX Interrupt : Maximum fault current device can withstand without damage at rated operating voltage. This current is used for component Recognition under UL1434. Devices may trip safely under higher level power cross conditions to assist equipment in meeting the appropriate ITU, UL60950 or GR1089 industry requirements. PD : Power dissipated from device when in the tripped state in 20°C still air. RMIN : Minimum resistance of device as supplied at 20°C unless otherwise specified. RMAX : Maximum resistance of device as supplied at 20°C unless otherwise specified. R1MAX : Maximum resistance measured one hour post-trip or post-reflow at 20°C. - 250VAC interrupt products may help equipment pass ITU K.20, K.21 and K.45 recommendations and Telcordia GR-1089 Port Type 2 and 4 requirements. † 600VAC interrupt products may help equipment pass UL60950, TIA-968-A and GR1089 Port Type 1, 3 and 5 requirements. ‡ Product is not currently available in a resistance matched or sorted option. © 2021 Littelfuse, Inc. Specifications are subject to change without notice. Revised: GD. 10/29/21 PolySwitch[®] Resettable PPTC **Datasheet** **TR Series** Radial Leaded **==> picture [46 x 52] intentionally omitted <==** **==> picture [311 x 52] intentionally omitted <==** ## **Temperature Rerating** **==> picture [506 x 364] intentionally omitted <==** **----- Start of picture text -----**<br> Maximum Ambient Temperature<br>Part Number -40°C -20°C 0°C 20°C 40°C 50°C 60°C 70°C 85°C<br>Hold Current (A)<br>TRF250 – Radial-leaded — 250VAC<br>TRF250-055T 0.085 0.076 0.065 0.055 0.045 0.041 0.035 0.030 0.023<br>TRF250-055UT 0.085 0.076 0.065 0.055 0.045 0.041 0.035 0.030 0.023<br>TRF250-080T 0.124 0.110 0.095 0.080 0.066 0.059 0.051 0.044 0.033<br>TRF250-080U 0.124 0.110 0.095 0.080 0.066 0.059 0.051 0.044 0.033<br>TRF250-110U 0.171 0.151 0.131 0.110 0.091 0.081 0.071 0.061 0.046<br>TRF250-120 0.186 0.165 0.143 0.120 0.099 0.088 0.077 0.066 0.050<br>TRF250-120T 0.186 0.165 0.143 0.120 0.099 0.088 0.077 0.066 0.050<br>TRF250-120U 0.186 0.165 0.143 0.120 0.099 0.088 0.077 0.066 0.050<br>TRF250-120UT 0.186 0.165 0.143 0.120 0.099 0.088 0.077 0.066 0.050<br>TRF250-145 0.225 0.199 0.172 0.145 0.119 0.106 0.093 0.080 0.060<br>TRF250-145T 0.225 0.199 0.172 0.145 0.119 0.106 0.093 0.080 0.060<br>TRF250-145U 0.225 0.199 0.172 0.145 0.119 0.106 0.093 0.080 0.060<br>TRF250-180 0.279 0.247 0.213 0.180 0.147 0.131 0.115 0.099 0.074<br>TRF250-183‡ 0.284 0.251 0.217 0.183 0.149 0.133 0.117 0.101 0.075<br>TRF250-183U‡ 0.284 0.251 0.217 0.183 0.149 0.133 0.117 0.101 0.075<br>TRF250-184‡ 0.286 0.252 0.218 0.184 0.150 0.134 0.118 0.102 0.075<br>TRF600 – Radial-leaded†— 600VAC<br>TRF600-150 0.239 0.209 0.180 0.150 0.121 0.107 0.093 0.079 0.057<br>TR600-150F-EX 0.239 0.209 0.180 0.150 0.121 0.107 0.093 0.079 0.057<br>TRF600-160 0.255 0.223 0.192 0.160 0.129 0.114 0.099 0.084 0.061<br>TRF600-250 0.400 0.350 0.300 0.250 0.198 0.170 0.140 0.117 0.083<br>TRF600-400 0.640 0.560 0.480 0.400 0.320 0.270 0.230 0.190 0.130<br>**----- End of picture text -----**<br> † 600VAC interrupt products may help equipment pass UL60950, TIA-968-A and GR1089 Port Type 1, 3 and 5 requirements. ‡ Product is not currently available in a resistance matched or sorted option. ## **Temperature Rerating Curve** **==> picture [504 x 163] intentionally omitted <==** **----- Start of picture text -----**<br> 200<br>150<br>100<br>50<br>0-40 -20 0 20 40 60 80<br>Device’s Ambient Temperature (˚C)<br>% of Rated Hold and Trip Current<br>**----- End of picture text -----**<br> © 2021 Littelfuse, Inc. Specifications are subject to change without notice. Revised: GD. 10/29/21 PolySwitch[®] Resettable PPTC **Datasheet** **==> picture [46 x 52] intentionally omitted <==** ## **TR Series** Radial Leaded **==> picture [311 x 52] intentionally omitted <==** ## **Typical Time-to-Trip Curves at 25°C** **==> picture [504 x 413] intentionally omitted <==** **----- Start of picture text -----**<br> TRF250 1000<br>A = TRF250-180/183/183U/184<br>B = TRF250-145/145U/145T C B<br>C = TRF250-120/120U 100 D A<br>D = TRF250-110U/120UT/120T E<br>E = TRF250-080T/080U 10 F<br>F = TRF250-055T/055UT<br>1<br>A<br>B<br>0.1 C<br>D<br>E<br>F<br>0.010.00 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.20 2.40 2.60 2.80 3.00<br>Fault Current (A)<br>TRF600 1000<br>A = TRF600-400<br>B = TRF600-250 C B<br>C = TRF600-160 100 D<br>A<br>D = TR600-150F-EX E<br>E = TRF600-150<br>10<br>1<br>A<br>B<br>0.1 C<br>D<br>E<br>0.010 1 2 3 4 5 6 7<br>Fault Current (A)<br>Time–to–Trip (s)<br>Time–to–Trip (s)<br>**----- End of picture text -----**<br> © 2021 Littelfuse, Inc. Specifications are subject to change without notice. Revised: GD. 10/29/21 PolySwitch[®] Resettable PPTC **Datasheet** **==> picture [46 x 52] intentionally omitted <==** ## **TR Series** Radial Leaded **==> picture [311 x 52] intentionally omitted <==** ## **TRF250/ TRF600 – Physical Specifications** ||**TRF250/ TRF600 – Physical Specifcations**| |---|---| |**Lead Material**|Tin-plated Copper, 22AWG| |**Insulating Material**|Cured Epoxy Polymer that meets UL 94 V-0 fammability rating| |**Soldering Characteristics**|ANSI/J-STD-002, Category 3| |**Solder Heat Withstand**|IEC 60068-2-20, Test Tb, Section 5 Method 1| **Note:** Devices are not intended to be placed through a reflow process. ## **TRF250/ TRF600 – Environmental Specifications** |**Test**|**Conditions**| |---|---| |**Passive Aging**|60°C, 1000 hrs<br>85°C, 1000 hrs| |**Humidity Aging**|85°C, 85% R.H., 1000 hrs| |**Thermal Shock**|125°C, -55°C (10 Times)| |**Solvent Resistance**|MIL-STD-202, Method 215F| |**Moisture Resistance Level**|Level 1, J-STD-020| |**Storage Conditions**|40°C max, 70% RH max; devices should remain in original sealed bags prior to use.<br>Devices may not meet specifed values if these storage conditions are exceeded.| **Note:** Storage conditions: 40°C (max), 70% RH (max), devices should remain in original sealed bag prior to use. Devices may not meet specified values if these storage conditions are exceeded. ## **Part Ordering Number System** **==> picture [161 x 13] intentionally omitted <==** **----- Start of picture text -----**<br> TRF*250 -120 T -RA -B-0.5 -2<br>**----- End of picture text -----**<br> **==> picture [178 x 135] intentionally omitted <==** **----- Start of picture text -----**<br> Packaging<br>2 = Tape and Reel<br>0.130 = Special Lead Length in Inches<br>(Blank) = Bulk<br>B-x.x = Resistance Matched in Bins of x.xΩ (Optional)<br>Rx = Resistance Range (Optional)<br>Modifier (Optional)<br>U = Uncoated<br>S = Straight Lead<br>T = Fast Trip Device<br>Hold Current (mA)<br>Product Series (TRF250, TRF600)<br>**----- End of picture text -----**<br> * F = RoHS compliant, ELV compliant © 2021 Littelfuse, Inc. Specifications are subject to change without notice. Revised: GD. 10/29/21 PolySwitch[®] Resettable PPTC **Datasheet** **TR Series** Radial Leaded **==> picture [46 x 52] intentionally omitted <==** **==> picture [311 x 52] intentionally omitted <==** ## **Dimension Figures** **==> picture [482 x 127] intentionally omitted <==** **----- Start of picture text -----**<br> A C A C<br>A C<br>A C<br>B<br>B B B<br>D D<br>D D<br>E E<br>CL to CL CL to CL E E<br>CL to CL CL to CL<br>**----- End of picture text -----**<br> **Figure 1** **Figure 2** **Figure 3** **Figure 4** **Dimensions and Weights** **==> picture [505 x 393] intentionally omitted <==** **----- Start of picture text -----**<br> Dimensions in Millimeters (Inches)<br>Part Number A B C D E F Fi gure (Only for Reference)Device Mass (g)<br>Min Max Min Max Min Max Min Max Min Max Min Max<br>TRF250 – Radial-leaded*— 250VAC<br>TRF250-055T — 5.8 — 9.9 — 4.6 4.7 — 5. 0 ‡ — — — 1 0.28<br>(0.23) (0.39) (0.18) (0.19) (0.20)<br>TRF250- — 4.8 — 9.3 — 3.8 4.7 — 5.0‡ — — — 4 0.13<br>05 5UT (0.19) (0.37) (0.15) (0.19) (0.20)<br>TRF250-080T — 5.8 — 9.9 — 4.6 4.7 — 5.0‡ — — — 1 0.28<br>(0.23) (0.39) (0.18) (0.19) (0.20)<br>TRF250-080U — 4.8 — 9.3 — 3.8 4.7 — 5.0‡ — — — 4 0.13<br>(0.19) (0.37) (0.15) (0.19) (0.20)<br>TRF250-110U — 5.3 — 9.4 — 3.8 4.7 — 5.0‡ — — — 4 0.13<br>(0.21) (0.37) (0.15) (0.19) (0.20)<br>TRF250-120 — 6.5 — 11.0 — 4.6 4.7 — 5.0‡ — — — 2 0.38<br>(0.26) (0.43) (0.18) (0.19) (0.20)<br>TRF250-120T — 6.5 — 11.0 — 4.6 4.7 — 5 .0‡ — — 7.0 2 0.38<br>(0.26) (0.43) (0.18) (0.19) (0.20) (0.28)<br>TRF250-120U — 6.0 — 10.0 — 3.8 4.7 — 5.0‡ — — 6.0 3 0.19<br>(0.24) (0.39) (0.15) (0.19) (0.20) (0.24)<br>TRF250- — 6.0 — 10.0 — 3.8 4 .7 — 5.0 ‡ — — 6.0 3 0.19<br>120UT (0.24) (0.39) (0.15) (0.19) (0.20) (0.24)<br>TRF250-145 — 6.5 — 11.0 — 4.6 4.7 — 5.0‡ — — 7.0 2 0.38<br>(0.26) (0.43) (0.18) (0.19) (0.20) (0.28)<br>TRF250-145T — 6.5 — 11.0 — 4.6 4.7 — 5.0‡ — — 7.0 2 0.38<br>(0.26) (0.43) (0.18) (0.19) (0.20) (0.28)<br>TRF250-145U — 6.0 — 10.0 — 3.8 4.7 — 5.0‡ — — 6.0 3 0.19<br>(0.24) (0.39) (0.15) (0.19) (0.20) (0.24)<br>T RF250-180 — 9 .0 — 12.0 — 3.8 4.7 — 5.0‡ — — — 1 0.35<br>(0.35) (0.47) (0.15) (0.19) (0.20)<br>TRF250-183 — 7.5 — 10.5 — 3.8 4.7 — 5.0‡ — — — 1 0.30<br>(0.29) (0.41) (0.15) (0.19) (0.20)<br>TRF250-183U — 6.5 — 10.0 — 3.0 4.7 — 5.0‡ — — — 4 0.16<br>(0.26) (0.39) (0.12) (0.19) (0.20)<br>TRF250-184 — 7.7 — 10.5 — 4.6 4.7 — 5.0‡ — — — 1 0.32<br>(0.30) (0.41) (0.18) (0.19) (0.20)<br>**----- End of picture text -----**<br> * 250VAC interrupt products may help equipment pass ITU K.20, K.21 and K.45 recommendations and Telcordia GR-1089 Port Type 2 and 4 requirements. ‡ Indicates dimension is typical, not minimum. © 2021 Littelfuse, Inc. Specifications are subject to change without notice. Revised: GD. 10/29/21 PolySwitch[®] Resettable PPTC **Datasheet** **TR Series** Radial Leaded **==> picture [46 x 52] intentionally omitted <==** **==> picture [311 x 52] intentionally omitted <==** ## **Dimension Figures** **==> picture [257 x 101] intentionally omitted <==** **----- Start of picture text -----**<br> A C A C<br>B B<br>D<br>D<br>E E<br>CL to CL CL to CL<br>**----- End of picture text -----**<br> **Figure 1** **Figure 2** ## **Dimensions and Weights** **==> picture [505 x 195] intentionally omitted <==** **----- Start of picture text -----**<br> Dimensions in Millimeters (Inches)<br>Device Mass (g)<br>Part Number A B C D E F Figure (Only for<br>Reference)<br>Min Max Min Max Min Max Min Max Min Max Min Max<br>TRF600 – Radial-leaded — 600VAC<br>9.0 12.5 4.6 4.7 5.0 9.0<br>TRF600-150 — — — — — — 1 0.37<br>(0.35) (0.49) (0.18) (0.19) (0.20) (0.35)<br>13.5 12.6 6.0 4.7 5.0<br>TR600-150F-EX — — — — — — — 2 0.80<br>(0.53) (0.50) (0.24) (0.19) (0.20)<br>16.0 12.6 6.0 4.7 5.0‡ 10.0<br>TRF600-160 — — — — — — 2 0.90<br>(0.63) (0.50) (0.24) (0.19) (0.20) (0.39)<br>15.0 14.5 4.6 4.7 5.0‡ 10.0<br>TRF600-250 — — — — — — 1 0.87<br>(0.59) (0.57) (0.18) (0.19) (0.20) (0.39)<br>14.8 13.1 4.6 6.0 5.0‡<br>TRF600-400 — — — — — — — 2 0.85<br>(0.58) (0.52) (0.18) (0.27) (0.20 )<br>**----- End of picture text -----**<br> ‡ Indicates dimension is typical, not minimum. ## **Wave** ~~**Sol**~~ **dering** ~~**Rec**~~ **o** ~~**mme**~~ **ndati** ~~**o**~~ **ns** ## **Recommended Wave Soldering** - Soldering temperature profile Temperature characteristic at component terminal with dual wave soldering ## **Rework** • If a device is removed from the board, it should be discarded and replaced with a new device **==> picture [243 x 164] intentionally omitted <==** **----- Start of picture text -----**<br> 300<br>10s<br>250 245˚C ... 260˚C<br>200<br>150<br>100˚C ... 130˚C<br>100<br>50 Forced cooling<br>0<br>0 50 100 150 200 250<br>Time (s)<br>Temperature (˚C)<br>**----- End of picture text -----**<br> © 2021 Littelfuse, Inc. Specifications are subject to change without notice. Revised: GD. 10/29/21 PolySwitch[®] Resettable PPTC **Datasheet** **TR Series** Radial Leaded **==> picture [46 x 52] intentionally omitted <==** **==> picture [311 x 52] intentionally omitted <==** ## **Packaging and Marking Information** **==> picture [505 x 586] intentionally omitted <==** **----- Start of picture text -----**<br> Part Bag Tape and Reel Standard Package Part Agency<br>Number Quantity Quantity Quantity Marking Approvals<br>TRF250 – Radial-leaded — 250VAC<br>TRF250-055T 500 — 10,000 05F —<br>TRF250-055UT 500 — 10,000 — —<br>TRF250-080U 500 — 10,000 — UL, CSA, TÜV<br>TRF250-080T 500 — 10,000 08F UL, CSA, TÜV<br>TRF250-110U 500 — 10,000 — UL, CSA, TÜV<br>TRF250-120 500 — 10,000 20F UL, CSA, TÜV<br>TRF250-120-2 — 1,500 7,500 20F UL, CSA, TÜV<br>TRF250-120T 500 — 10,000 20F —<br>TRF250-120T-2 — 1,500 7,500 20F —<br>TRF250-120U 500 — 10,000 — UL, CSA, TÜV<br>TRF250-120U-2 — 1,500 7,500 — UL, CSA, TÜV<br>TRF250-120UT 500 — 10,000 — —<br>TRF250-145 500 — 10,000 45F UL, CSA, TÜV<br>TRF250-145-2 — 1,500 7,500 45F UL, CSA, TÜV<br>TRF250-145T 500 — 10,000 45F —<br>TRF250-145T-2 — 1,500 7,500 45F —<br>TRF250-145U 500 — 10,000 — UL, CSA, TÜV<br>TRF250-145U-2 — 1,500 7,500 — UL, CSA, TÜV<br>TRF250-180 500 — 10,000 80F UL, CSA, TÜV<br>TRF250-180-2 — 1500 7,500 80F UL, CSA, TÜV<br>TRF250-183 500 — 10,000 83F UL, CSA, TÜV<br>TRF250-183-2 — 1,500 7,500 83F UL, CSA, TÜV<br>TRF250-183U 500 — 10,000 — UL, CSA, TÜV<br>TRF250-184 500 — 10,000 84F UL, CSA, TÜV<br>TRF600 – Radial-leaded — 600VAC<br>TRF600-150 500 — 10,000 150F UL, CSA, TÜV<br>TRF600-150-2 — 1,500 7,500 150F UL, CSA, TÜV<br>TR600-150F-EX 500 — 10,000 150F —<br>TR600-150F-EX-2 — 600 3,000 150F —<br>TRF600-160 500 — 10,000 160F UL, CSA, TÜV<br>TRF600-160-2 — 600 3,000 160F UL, CSA, TÜV<br>TRF600-250 500 — 10,000 250F UL, CSA, TÜV<br>TRF600-400 500 — 10,000 400F UL, CSA, TÜV<br>**----- End of picture text -----**<br> © 2021 Littelfuse, Inc. Specifications are subject to change without notice. Revised: GD. 10/29/21 PolySwitch[®] Resettable PPTC **Datasheet** **TR Series** Radial Leaded **==> picture [46 x 52] intentionally omitted <==** **==> picture [311 x 52] intentionally omitted <==** ## **Tape and Reel Specifications** TRF250/TRF600 devices are available in tape and reel packaging per EIA 468-B standard. See Figures 1 and 2 for details. **==> picture [506 x 545] intentionally omitted <==** **----- Start of picture text -----**<br> Description EIA Mark IEC Mark Dimension (mm) Tolerance<br>Carrier Tape Width W W 18 -0.5/+1.0<br>Hold Down Tape Width W4 W0 5 Min<br>Top Distance between Tape Edges W6 W2 3 Max<br>Sprocket Hole Position W5 W1 9 -0.5/+0.75<br>Sprocket Hole Diameter D0 D0 4 ±0.2<br>Abcissa to Plane (Straight Lead) H H 18.5 ±3.0<br>Abcissa to Plane (Kinked Lead)* H0 H0 16 -0.5/+0.6<br>Abcissa to Top H1 H1 32.2 Max<br>Overall Width with Lead Protrusion — C1 43.2 Max<br>Overall Width without Lead Protrusion — C2 42.5 Max<br>Lead Protrusion L1 I1 1.0 Max<br>Protrusion of Cut-out L L 11 Max<br>Protrusion beyond Hold Down Tape I2 I2 Not Specified —<br>Sprocket Hole Pitch P0 P0 12.7 ±0.3<br>Device Pitch (TRF250 and TRF600-150) — — 12.7 —<br>Device Pitch (TRF600-160 - TRF600-400) — — 25.4 —<br>Pitch Tolerance — — 20 Consecutive ±1<br>Tape Thickness t t 0.9 Max<br>Tape Thickness with Splice* t1 — 2.0 Max<br>Splice Sprocket Hole Alignment — — 0 ±0.3<br>Body Lateral Deviation Dh Dh 0 ±1.0<br>Body Tape Plane Deviation Dp Dp 0 ±1.3<br>Lead Spacing Plane Deviation DP1 P1 0 ±0.7<br>Lead Spacing* F F 5.08 ±0.6<br>Reel Width w2 w 56 Max<br>Reel Diameter a d 370 Max<br>Space between Flanges Less Device w1 — 4.75 ±3.25<br>Arbor Hole Diameter c f 26 ±12.0<br>Core Diameter n h 80 Max<br>Box — — 56/372/372 Max<br>Consecutive Missing Pieces* — — 3 Max —<br>— — —<br>Empty Places per Reel* Not Specified<br>**----- End of picture text -----**<br> * Differs from EIA specification. © 2021 Littelfuse, Inc. Specifications are subject to change without notice. Revised: GD. 10/29/21 PolySwitch[®] Resettable PPTC **Datasheet** **TR Series** Radial Leaded **==> picture [46 x 52] intentionally omitted <==** **==> picture [311 x 52] intentionally omitted <==** ## **Tape and Reel Diagrams** **==> picture [418 x 375] intentionally omitted <==** **----- Start of picture text -----**<br> �h �h �p �p<br>Reference Plane<br>H1 P1 H1 C2<br>F H C1<br>L A B W4 H0 W5<br>W<br>I2<br>L1 P 0 D0 Direction of Unreeli ng<br>Cross section A-B<br>t<br>Figure 1<br>Reel<br>Upper Side<br>n<br>Tape<br>a Direction of<br>Unreeling<br>Lower Side<br>c<br>Cross Section<br>Optional Shape: Circular or Polygonal<br>**----- End of picture text -----**<br> **==> picture [221 x 115] intentionally omitted <==** **----- Start of picture text -----**<br> n<br>a Direction of<br>Unreeling<br>c<br>w 1<br>Cross Section<br>w 2<br>Optional Shape: Circular or Polygonal<br>**----- End of picture text -----**<br> **Figure 2** ## **Warning** - Users should independently evaluate the suitability of and test each product selected for their own application. - Operation beyond the maximum ratings or improper use may result in device damage and possible electrical arcing and flame. - These devices are intended for protection against damage caused by occasional overcurrent or overtemperature fault conditions and should not be used when repeated fault conditions or prolonged trip events are anticipated. - Contamination of the PPTC material with certain silicone-based oils or some aggressive solvents can adversely impact the performance of the devices. - Device performance can be impacted negatively if devices are handled in a manner inconsistent with recommended electronic, thermal, and mechanical procedures for electronic components. - PPTC devices are not recommended for installation in applications where the device is constrained such that its PTC properties are inhibited, for example in rigid potting materials or in rigid housings, which lack adequate clearance to accommodate device expansion. - Operation in circuits with a large inductance can generate a circuit voltage (Ldi/dt) above the rated voltage of the device. **Disclaimer Notice** - Information furnished is believed to be accurate and reliable. However, users should independently evaluate the suitability of and test each product selected for their own applications. Littelfuse products are not designed for, and may not be used in, all applications. Read complete Disclaimer Notice at www.littelfuse.com/disclaimer-electronics. © 2021 Littelfuse, Inc. Specifications are subject to change without notice. Revised: GD. 10/29/21
Updated at June 9, 2026
Founded in 1927 and headquartered in Chicago, Illinois, Littelfuse is a premier global manufacturer of circuit protection, power control, and sensing technologies. Widely recognized for pioneering the first small, fast-acting protective fuse, the company has grown into an industry leader whose highly reliable components are essential to modern industrial, transportation, and consumer electronics applications worldwide. At the core of the Littelfuse portfolio is an expansive and industry-leading range of circuit protection solutions. This encompasses a massive selection of traditional fuses, fuse holders, and resettable PTC thermistor fuses designed to safely interrupt overcurrent conditions. To defend against electrical overstress, Littelfuse also provides advanced transient voltage suppression (TVS) technologies, including thousands of specialized TVS diodes, TVS varistors, and gas discharge tubes (GDTs) that ensure robust defense against voltage spikes and environmental hazards. Beyond its foundational protection components, Littelfuse manufactures a diverse array of discrete semiconductors, sensors, and switching devices. Engineers rely on their high-performance thyristors, including TRIACs and SCRs, alongside power-efficient Schottky diodes and MOSFETs for demanding power control applications. Complemented by precision proximity sensors and highly reliable reed and solid-state relays, Littelfuse delivers the critical building blocks required for secure, efficient, and complete system design.
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