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RXEF005-2
Resettable Fuse, PPTC, PolySwitch RXEF, 60 VDC, 50 mA, 100 mA, 5 s, Round
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- Manufacturer: LITTELFUSE
- Product type: Radial Leaded PPTCs
- Thermistor Mounting:Through Hole; Product Range:PolySwitch RXEF Series; Holding Current:50mA; Tripping Current:100mA; Voltage Rating:60VDC; Operating Temperature Min:-40°C; Operat
- SVHC: To Be Advised
- Height: 8.3mm
- Length: -
- Diameter: 8mm
- Thickness: 3mm
- Fuse Shape: Round
- Lead Spacing: 5.8mm
- Time to Trip: 5s
- Trip Current: 100mA
- Product Range: PolySwitch RXEF
- Voltage Rating: 60VDC
- Holding Current: 50mA
- Current Rating Max: 40A
- Thermistor Mounting: Through Hole
- Operating Temperature Max: 85°C
- Operating Temperature Min: -40°C
- Automotive Qualification Standard: -
| Delivery and price | |
|---|---|
| Units per pack | 3000 |
| Price | 0.196 € |
| Current stock | 10+ |
| Lead time | 30 days |
Datasheet
**PolySwitch[®] Resettable PPTCs** Radial Leaded > RXEF Series ## RXEF Series ## RoHS ~~HF|_|@ Ws @ A~~ ## **Description** Littelfuse PolySwitch radial-leaded devices represent the most comprehensive and complete set of PPTC products available in the industry today. RXEF series offers low hold currents (down to 50mA) and high voltage rating (up to 72V). ## **Features** - Resettable and single-use overcurrent devices - Wide range of form factor and termination methods ## **Agency Approvals** ee **==> picture [203 x 90] intentionally omitted <==** **----- Start of picture text -----**<br> Agency Approvals<br>AGENCY AGENCY FILE NUMBER<br>E74889<br>Wo.<br>78165<br>@,<br>72161785<br>**----- End of picture text -----**<br> - Devices compatible with high-volume electronics assembly - RoHS compliant, Lead-Free and Halogen-Free ## **Applications** Lo - Satellite video receivers • CD-ROMs - Game machines - Industrial controls - Transformers - Battery packs - Computer motherboards - Phones - Modems - Fax machines - USB hubs, ports and • Analog and digital line cards peripherals • Printers - • IEEE 1394 ports ||||||||**Additional Information**<br>**Datasheet**<br>**Resources**<br>**Samples**<br>Lo<br>re|**Additional Information**<br>**Datasheet**<br>**Resources**<br>**Samples**<br>Lo<br>re|**Additional Information**<br>**Datasheet**<br>**Resources**<br>**Samples**<br>Lo<br>re|**Additional Information**<br>**Datasheet**<br>**Resources**<br>**Samples**<br>Lo<br>re|**Additional Information**<br>**Datasheet**<br>**Resources**<br>**Samples**<br>Lo<br>re| |---|---|---|---|---|---|---|---|---|---|---|---| |**Electrical Characteristics**|||||||||||| |Part<br>Number<br>IH<br>(A)<br>~~BR~~||IT<br>(A)|VMAX<br>IMAX<br>PD Typ<br>Max Time-to-trip<br>RMIN<br>RMAX<br>R1MAX<br>Lead Size<br>(mm<br>2/AWG)<br>(VDC)<br>(VAC RMS)<br>(DCADC)<br>(ACARMS)<br>(W)<br>(A)<br>(s)<br>(Ω)<br>(Ω)<br>(Ω)<br>**RXEF – 60V**<br>~~ep oS~~<br>~~HL~~||||||||| |RXEF005|0.05|0.10|60|–|40|–|0.22<br>0.25<br>5.0<br>7.3<br>11.10||20.00||0.128/26| |RXEF010|0.10|0.20|60|–|40|–|0.38<br>0.50<br>4.0<br>2.5<br>4.50||7.50||0.205/24| |RXEF017|0.17|0.34|60|–|40|–|0.48<br>0.85<br>3.0<br>3.3<br>5.21||8.00||0.205/24| ## **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 : Maximum continuous voltage device can withstand without damage at rated current. - IMAX : Maximum fault current device can withstand without damage at rated voltage. - 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 of device when measured one hour post reflow (surface-mount device) or one hour post trip (radial-leaded device) at 20°C unless otherwise specified. - Electrical characteristics determined at 25°C. © 2018 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 10/22/18 **PolySwitch[®] Resettable PTCs** Radial Leaded > RXEF Series **==> picture [93 x 32] intentionally omitted <==** **==> picture [506 x 620] intentionally omitted <==** **----- Start of picture text -----**<br> Electrical Characteristics (Cont’d)<br>Part IH IT VMAX IMAX PD Typ Max Time-to-trip RMIN RMAX R1MAX Lead Size<br>Number (mm2/AWG)<br>(A) (A) (VDC) (VAC RMS) (DCADC) (ACARMS) (W) (A) (s) (Ω) (Ω) (Ω)<br>RXEF – 72V<br>RXEF020 0.20 0.40 72 72 40 40 0.41 1.00 2.2 1.83 2.75 4.40 0.205/24<br>RXEF025 0.25 0.50 72 72 40 40 0.45 1.25 2.5 1.25 1.95 3.00 0.205/24<br>RXEF030 0.30 0.60 72 72 40 40 0.49 1.50 3.0 0.88 1.33 2.10 0.205/24<br>RXEF040 0.40 0.80 72 72 40 40 0.56 2.00 3.8 0.55 0.86 1.29 0.205/24<br>RXEF050 0.50 1.00 72 72 40 40 0.77 2.50 4.0 0.50 0.77 1.17 0.205/24<br>RXEF065 0.65 1.30 72 72 40 40 0.88 3.25 5.3 0.31 0.48 0.72 0.205/24<br>RXEF075 0.75 1.50 72 72 40 40 0.92 3.75 6.3 0.25 0.40 0.60 0.205/24<br>RXEF090 0.90 1.80 72 72 40 40 0.99 4.50 7.2 0.20 0.31 0.47 0.205/24<br>RXEF110 1.10 2.20 72 72 40 40 1.50 5.50 8.2 0.15 0.25 0.38 0.520/20<br>RXEF135 1.35 2.70 72 72 40 40 1.70 6.75 9.6 0.12 0.19 0.30 0.520/20<br>RXEF160 1.60 3.20 72 72 40 40 1.90 8.00 11.4 0.09 0.14 0.22 0.520/20<br>RXEF185 1.85 3.70 72 72 40 40 2.10 9.25 12.6 0.08 0.12 0.19 0.520/20<br>RXEF250 2.50 5.00 72 72 40 40 2.50 12.50 15.6 0.05 0.08 0.13 0.520/20<br>RXEF300 3.00 6.00 72 72 40 40 2.80 15.00 19.8 0.04 0.06 0.10 0.520/20<br>RXEF375 3.75 7.50 72 72 40 40 3.20 18.75 24.0 0.03 0.05 0.08 0.520/20<br>Notes:<br>IH : Hold current: maximum current device will pass without interruption in 20°C still air. RMIN : Minimum resistance of device as supplied at 20°C unless otherwise specified.<br>IT : Trip current: minimum current that will switch the device from low resistance to RMAX : Maximum resistance of device as supplied at 20°C unless otherwise specified.<br> high resistance in 20°C still air. R1MAX : Maximum resistance of device when measured one hour post reflow<br>VMAX : Maximum continuous voltage device can withstand without damage at rated current. (surface-mount device) or one hour post trip (radial-leaded device) at 20°C unless<br>IMAX : Maximum fault current device can withstand without damage at rated voltage. otherwise specified.<br>PD : Power dissipated from device when in the tripped state in 20°C still air. * Electrical characteristics determined at 25°C.<br>Typical Time-to-Trip Curves at 20°C<br>RXEF 1000 B C D E F G H I J K L MNO P Q R<br>A = RXEF005 J = RXEF075<br>B = RXEF010 K = RXEF090 100<br>C = RXEF017 L = RXEF110<br>A<br>D = RXEF020 M = RXEF135<br>10<br>E = RXEF025 N = RXEF160<br>F = RXEF030 O = RXEF185<br>R<br>1<br>G = RXEF040 P = RXEF250 Q<br>H = RXEF050 Q = RXEF300 P<br>I = RXEF065 R = RXEF375 0.1 N [O]<br>M<br>L<br>0.01 K<br>J<br>A I<br>0.0010.1 1 B 10C D E F G H 100<br>Fault Current (A)<br>Time-to-Trip (s)<br>**----- End of picture text -----**<br> © 2018 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 10/22/18 **PolySwitch[®] Resettable PPTCs** Radial Leaded > RXEF Series **==> picture [94 x 32] intentionally omitted <==** **==> picture [507 x 361] intentionally omitted <==** **----- Start of picture text -----**<br> Temperature Rerating<br>Maximum Ambient Temperature<br>-40°C -20°C 0°C 20°C 25°C 40°C 50°C 60°C 70°C 85°C<br>Hold Current (A)<br>RXEF – 60V<br>RXEF005 0.078 0.068 0.06 0.05 0.048 0.04 0.035 0.032 0.027 0.02<br>RXEF010 0.160 0.140 0.11 0.10 0.096 0.08 0.072 0.067 0.050 0.04<br>RXEF017 0.260 0.230 0.21 0.17 0.160 0.14 0.120 0.110 0.090 0.07<br>RXEF – 72V<br>RXEF020 0.31 0.27 0.24 0.20 0.19 0.16 0.14 0.13 0.11 0.08<br>RXEF025 0.39 0.34 0.30 0.25 0.24 0.20 0.18 0.16 0.14 0.10<br>RXEF030 0.47 0.41 0.36 0.30 0.29 0.24 0.22 0.20 0.16 0.12<br>RXEF040 0.62 0.54 0.48 0.40 0.38 0.32 0.29 0.25 0.22 0.16<br>RXEF050 0.78 0.68 0.60 0.50 0.48 0.41 0.36 0.32 0.27 0.20<br>RXEF065 1.01 0.88 0.77 0.65 0.62 0.53 0.47 0.41 0.35 0.26<br>RXEF075 1.16 1.02 0.89 0.75 0.72 0.61 0.54 0.47 0.41 0.30<br>RXEF090 1.40 1.22 1.07 0.90 0.86 0.73 0.65 0.57 0.49 0.36<br>RXEF110 1.71 1.50 1.31 1.10 1.06 0.89 0.79 0.69 0.59 0.44<br>RXEF135 2.09 1.84 1.61 1.35 1.30 1.09 0.97 0.85 0.73 0.54<br>RXEF160 2.48 2.18 1.90 1.60 1.54 1.30 1.15 1.01 0.86 0.64<br>RXEF185 2.87 2.52 2.20 1.85 1.78 1.50 1.33 1.17 1.00 0.74<br>RXEF250 3.88 3.40 2.98 2.50 2.40 2.03 1.80 1.58 1.35 1.00<br>RXEF300 4.65 4.08 3.57 3.00 2.88 2.43 2.16 1.89 1.62 1.20<br>RXEF375 5.81 5.10 4.46 3.75 3.60 3.04 2.70 2.36 2.03 1.50<br>**----- End of picture text -----**<br> **==> picture [504 x 217] intentionally omitted <==** **----- Start of picture text -----**<br> Temperature Rerating Curve<br>200<br>150<br>100<br>50<br>0<br>-40 -20 0 20 40 60 80<br>Ambient Temperature (˚C)<br>% of Rated Hold and Trip Current<br>**----- End of picture text -----**<br> © 2018 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 10/22/18 **PolySwitch[®] Resettable PTCs** Radial Leaded > RXEF Series **==> picture [93 x 32] intentionally omitted <==** |**Physical Specifcations**|| |---|---| |**Lead Material**|RXEF005: Tin-plated Nickel-copper Alloy, 0.128mm2(26AWG), ø0.40mm (0.016in)<br>RXEF010: Tin-plated Nickel-copper Alloy, 0.205mm2(24AWG), ø0.51mm (0.020in)<br>RXEF017 to 040: Tin-plated Copper-clad Steel, 0.205mm2(24AWG), ø0.51mm (0.020in)<br>RXEF050 to 090 : Tin-plated Copper, 0.205mm2(24AWG), ø0.51mm (0.020in)<br>RXEF110 to 375: Tin-plated Copper, 0.52mm2(20AWG), ø0.81mm (0.032in)| |**Soldering Characteristics**|Solderability per ANSI/J-STD-002 Category 3<br>RXEF005, RXEF010 Meet ANSI/J-STD-002 Category 1| |**Solder Heat Withstand**|RXEF005- RXEF025: per IEC-STD 68-2-20, Test Tb, Method 1a, Condition a;<br>Can Withstand 5s at 260°C ±5°C<br>All Other Sizes: per IEC-STD 68-2-20, Test Tb, Method 1a, Condition b;<br>Can Withstand 10s at 260°C ±5°C| |**Insulating Material**|Cured, Flame-retardant Epoxy Polymer; Meets UL 94V-0| |**Operation Temperature**|-40°C~85°C| **Note:** Devices are not designed to be placed through a reflow process. **==> picture [506 x 184] intentionally omitted <==** **----- Start of picture text -----**<br> Environmental Specifications<br>Test Conditions Resistance Change<br>-40°C, 1000 hrs ±5%<br>Passive Aging<br>85°C, 1000 hrs ±5%<br>Humidity Aging 85°C, 85% R.H., 1000 hrs ±10%<br>Thermal Shock 85°C to -40°C 10 times ±10%<br>Solvent Resistance MIL-STD-202, Method 215F No change<br>Moisture Resistance Level Level 1, J-STD-020<br>40°C max, 70% RH max; devices should remain in original sealed bags prior to use.<br>Storage Conditions<br>Devices may not meet specified values if these storage conditions are exceeded.<br>**----- End of picture text -----**<br> © 2018 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 10/22/18 Radial Leaded > RXEF Series **==> picture [94 x 32] intentionally omitted <==** ## **PolySwitch[®] Resettable PPTCs** ## **Dimension Figures** **==> picture [506 x 548] intentionally omitted <==** **----- Start of picture text -----**<br> A E A E A E<br>J<br>B J<br>B<br>B<br>Figure 4<br>D<br>D<br>D<br>A<br>C<br>C F C F C F<br>CL to CL CL CL CL to CL CL CL CL to CL CL CL<br>E H<br>Figure 1 Figure 2 Figure 3<br>Figure 5<br>Dimensions and Weights<br>Dimensions in Millimeters (Inches)<br>Part A B C D E H J Figure Device Mass (g)<br>Number (Only for Reference)<br>Min Max Min Max Min Max Min Max Min Max Typ Typ<br>R XEF – 6 0 V<br>8.0 8.3 4.3 5.8 7.6 3.0 1.07 1.0<br>RXEF005 — — — — 1,4,5 0.069<br>(0.32) (0.33) (0.17) (0.23) (0.30) (0.12) (0.042) (0.04)<br>7.4 11.6 4.3 5.8 7.6 3.0 1.07 1.0<br>RXEF010 — — — — 2,4,5 0.128<br>(0.29) (0.46) (0.17) (0.23) (0.30) (0.12) (0.042) (0.04)<br>7.4 12.7 4.3 5.8 7.6 3.0 1.68 1.7<br>RXEF017 — — — — 2,4,5 0.174<br>(0.29) (0.50) (0.17) (0.23) (0.30) (0.12) (0.066) (0.07)<br>RXEF – 72V<br>7.4 11.7 4.3 5.8 7.6 3.0 1.17 1.0<br>RXEF020 — — — — 2,4,5 0.119<br>(0.29) (0.46) (0.17) (0.23) (0.30) (0.12) (0.046) (0.04)<br>7.4 12.7 4.3 5.8 7.6 3.0 1.17 1.0<br>RXEF025 — — — — 2,4,5 0.130<br>(0.29) (0.50) (0.17) (0.23) (0.30) (0.12) (0.046) (0.04)<br>7.4 12.7 4.3 5.8 7.6 3.0 1.17 1.0<br>RXEF030 — — — — 2,4,5 0.143<br>(0.2 9) (0.50) (0.17) (0.23) (0.30) (0.12) (0.046) (0.04)<br>7.6 13.5 4.3 5.8 7.6 3.0 1.17 1.2<br>RXEF040 — — — — 2,4,5 0.202<br>(0.30) (0.53) (0.17) (0.23) (0.30) (0.12) (0.046) (0.05)<br>7.9 13.7 4.3 5.8 7.6 3.0 1.17 1.2<br>RXEF050 — — — — 2,4,5 0.210<br>(0.31) (0.54) (0.17) (0.23) (0.30) (0.12) (0.046) (0.05)<br>9.4 14.5 4.3 5.8 7.6 3.0 1.17 1.5<br>RXEF065 — — — — 2,4,5 0.277<br>(0.37) (0.57) (0.17) (0.23) (0.30) (0.12) (0.046) (0.06)<br>10.2 15.2 4.3 5.8 7.6 3.0 1.17 1.5<br>RXEF075 — — — — 2,4,5 0.310<br>(0.40) (0.60) (0.17) (0.23) (0.30) (0.12) (0.046) (0.06)<br>11.2 15.8 4.3 5.8 7.6 3.0 1.17 1.5<br>RXEF090 — — — — 2,4,5 0.365<br>(0.44) (0.62) (0.17) (0.23) (0.30) (0.12) (0.046) (0.06)<br>**----- End of picture text -----**<br> © 2018 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 10/22/18 **PolySwitch[®] Resettable PTCs** Radial Leaded > RXEF Series **==> picture [93 x 32] intentionally omitted <==** ## **Dimension Figures** **==> picture [506 x 427] intentionally omitted <==** **----- Start of picture text -----**<br> A E A E A E<br>J<br>B J<br>B<br>B<br>Figure 4<br>D<br>D<br>D<br>A<br>C<br>C F C F C F<br>CL to CL CL CL CL to CL CL CL CL to CL CL CL<br>E H<br>Figure 1 Figure 2 Figure 3<br>Figure 5<br>Dimensions and Weights (Cont’d)<br>Dimensions in Millimeters (Inches)<br>Part A B C D E H J Figure Device Mass (g)<br>Number (Only for Reference)<br>Min Max Min Max Min Max Min Max Min Max Typ Typ<br>R XEF – 7 2 V<br>12.8 17.5 4.3 5.8 7.6 3.0 1.37 1.2<br>RXEF110 — — — — 3,4,5 0.546<br>(0.50) (0.69) (0.17) (0.23) (0.30) (0.12) (0.054) (0.05)<br>14.5 19.1 4.3 5.8 7.6 3.0 1.37 1.2<br>RXEF135 — — — — 3,4,5 0.653<br>(0.57) (0.75) (0.17) (0.23) (0.30) (0.12) (0.054) (0.05)<br>16.3 20.8 4.3 5.8 7.6 3.0 1.37 1.5<br>RXEF160 — — — — 3,4,5 0.684<br>(0.64) (0.82) (0.17) (0.23) (0.30) (0.12) (0.054) (0.06)<br>17.5 22.4 4.3 5.8 7.6 3.0 1.37 1.5<br>RXEF185 — — — — 3,4,5 0.808<br>(0.69) (0.88) (0.17) (0.23) (0.30) (0.12) (0.054) (0.06)<br>20.8 25.4 9.4 10.9 7.6 3.0 1.37 1.7<br>RXEF250 — — — — 3,4,5 1.139<br>(0.82) (1.00) (0.37) (0.43) (0.30) (0.12) (0.054) (0.07)<br>23.9 28.6 9.4 10.9 7.6 3.0 1.37 1.7<br>RXEF300 — — — — 3,4,5 1.379<br>(0.94) (1.13) (0.37) (0.43) (0.30) (0.12) (0.054) (0.07)<br>27 .2 31.8 9.4 10.9 7.6 3.0 1.37 1.7<br>RXEF375 — — — — 3,4,5 1.708<br>(1.07) (1.25) (0.37) (0.43) (0.30) (0.12) (0.054) (0.07)<br>**----- End of picture text -----**<br> © 2018 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 10/22/18 **PolySwitch[®] Resettable PPTCs** Radial Leaded > RXEF Series **==> picture [94 x 32] intentionally omitted <==** ## **Packaging and Marking Information** **==> picture [506 x 571] intentionally omitted <==** **----- Start of picture text -----**<br> Part Bag Tape and Reel Ammo Pack Standard Package Part Agency<br>Number Quantity Quantity Quantity Quantity Marking Recognition<br>RXEF – 60V<br>RXEF005 500 — — 10,000 — UL, CSA, TÜV, CQC<br>RXEF005-2 — 3,000 — 15,000 — UL, CSA, TÜV, CQC<br>RXEF005-AP — — 2,000 10,000 — UL, CSA, TÜV, CQC<br>RXEF010 500 — — 10,000 X10 UL, CSA, TÜV, CQC<br>RXEF010-2 — 3,000 — 15,000 X10 UL, CSA, TÜV, CQC<br>RXEF010-AP — — 2,000 10,000 X10 UL, CSA, TÜV, CQC<br>RXEF017 500 — — 10,000 X17 UL, CSA, TÜV, CQC<br>RXEF017-2 — 2,500 — 12,500 X17 UL, CSA, TÜV, CQC<br>RXEF017-AP — — 2,000 10,000 X17 UL, CSA, TÜV, CQC<br>RXEF – 72V<br>RXEF020 500 — — 10,000 X20 UL, CSA, TÜV, CQC<br>RXEF020-2 — 3,000 — 15,000 X20 UL, CSA, TÜV, CQC<br>RXEF020-AP — — 2,000 10,000 X20 UL, CSA, TÜV, CQC<br>RXEF025 500 — — 10,000 X25 UL, CSA, TÜV, CQC<br>RXEF025-2 — 3,000 — 15,000 X25 UL, CSA, TÜV, CQC<br>RXEF025-AP — — 2,000 10,000 X25 UL, CSA, TÜV, CQC<br>RXEF030 500 — — 10,000 X30 UL, CSA, TÜV, CQC<br>RXEF030-2 — 3,000 — 15,000 X30 UL, CSA, TÜV, CQC<br>RXEF030-AP — — 2,000 10,000 X30 UL, CSA, TÜV, CQC<br>RXEF040 500 — — 10,000 X40 UL, CSA, TÜV, CQC<br>RXEF040-2 — 3,000 — 15,000 X40 UL, CSA, TÜV, CQC<br>RXEF040-AP — — 2,000 10,000 X40 UL, CSA, TÜV, CQC<br>RXEF050 500 — — 10,000 X50 UL, CSA, TÜV, CQC<br>RXEF050-2 — 3,000 — 15,000 X50 UL, CSA, TÜV, CQC<br>RXEF050-AP — — 2,000 10,000 X50 UL, CSA, TÜV, CQC<br>RXEF065 500 — — 10,000 X65 UL, CSA, TÜV, CQC<br>RXEF065-2 — 3,000 — 15,000 X65 UL, CSA, TÜV, CQC<br>RXEF065-AP — — 2,000 10,000 X65 UL, CSA, TÜV, CQC<br>RXEF075 500 — — 10,000 X75 UL, CSA, TÜV, CQC<br>RXEF075-2 — 3,000 — 15,000 X75 UL, CSA, TÜV, CQC<br>RXEF075-AP — — 2,000 10,000 X75 UL, CSA, TÜV, CQC<br>RXEF090 500 — — 10,000 X90 UL, CSA, TÜV, CQC<br>RXEF090-2 — 3,000 — 15,000 X90 UL, CSA, TÜV, CQC<br>RXEF090-AP — — 2,000 10,000 X90 UL, CSA, TÜV, CQC<br>RXEF110 500 — — 10,000 X110 UL, CSA, TÜV, CQC<br>RXEF110-2 — 1,500 — 7,500 X110 UL, CSA, TÜV, CQC<br>RXEF110-AP — — 1,000 5,000 X110 UL, CSA, TÜV, CQC<br>**----- End of picture text -----**<br> © 2018 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 10/22/18 **PolySwitch[®] Resettable PTCs** Radial Leaded > RXEF Series **==> picture [93 x 32] intentionally omitted <==** **==> picture [506 x 295] intentionally omitted <==** **----- Start of picture text -----**<br> Packaging and Marking Information (Cont’d)<br>Part Bag Tape and Reel Ammo Pack Standard Package Part Agency<br>Number Quantity Quantity Quantity Quantity Marking Recognition<br>RXEF – 72V<br>RXEF135 500 — — 10,000 X135 UL, CSA, TÜV, CQC<br>RXEF135-2 — 1,500 — 7,500 X135 UL, CSA, TÜV, CQC<br>RXEF135-AP — — 1,000 5,000 X135 UL, CSA, TÜV, CQC<br>RXEF160 500 — — 10,000 X160 UL, CSA, TÜV, CQC<br>RXEF160-2 — 1,500 — 7,500 X160 UL, CSA, TÜV, CQC<br>RXEF160-AP — — 1,000 5,000 X160 UL, CSA, TÜV, CQC<br>RXEF185 500 — — 10,000 X185 UL, CSA, TÜV, CQC<br>RXEF185-2 — 1,500 — 7,500 X185 UL, CSA, TÜV, CQC<br>RXEF185-AP — — 1,000 5,000 X185 UL, CSA, TÜV, CQC<br>RXEF250 250 — — 5,000 X250 UL, CSA, TÜV, CQC<br>RXEF250-2 — 1,000 — 5,000 X250 UL, CSA, TÜV, CQC<br>RXEF250-AP — — 1,000 5,000 X250 UL, CSA, TÜV, CQC<br>RXEF300 250 — — 5,000 X300 UL, CSA, TÜV, CQC<br>RXEF300-2 — 1,000 — 5,000 X300 UL, CSA, TÜV, CQC<br>RXEF300-AP — — 1,000 5,000 X300 UL, CSA, TÜV, CQC<br>RXEF375 250 — — 5,000 X375 UL, CSA, TÜV, CQC<br>**----- End of picture text -----**<br> ## **Part Ordering Number System** **==> picture [371 x 159] intentionally omitted <==** **----- Start of picture text -----**<br> RXEF 250 U 2<br>Packaging<br>Blank = Packaged in Bags<br>-1 = 25.4mm (1.0 in) Minimum Lead Length<br>-2 = Tape and Reel<br>-AP = Ammo Pack<br>-X.X = Special Lead Cut Length (in)<br>Modifier<br>K = Standard Kinked Lead<br>B = Special Kinked Lead<br>S = Straight Lead<br>U = Uncoated Device<br>Hold Current Indicator<br>Product Series<br>An “F” at the end of product series indicates Pb-free version of product.<br>**----- End of picture text -----**<br> **Note:** Kinked parts are recommended to control the height of the part on the PCB in non-auto PCB applications. © 2018 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 10/22/18 **PolySwitch[®] Resettable PPTCs** Radial Leaded > RXEF Series **==> picture [94 x 32] intentionally omitted <==** ## **Tape and Reel Specifications** RXEF devices are available in tape and reel packaging per EIA468-B/IEC60286-2 standards. See Figures 1 and 2 for details. **==> picture [506 x 545] intentionally omitted <==** **----- Start of picture text -----**<br> Description EIA Mark Dimension (mm) Tolerance<br>Carrier Tape Width W 18 -0.5/+1.0<br>Hold-Down Tape Width W4 11 Minimum<br>Top Distance between Tape Edges W6 3 Maximum<br>Sprocket Hole Position W5 9 -0.5/+0.75<br>Sprocket Hole Diameter D0 4 ± 0.2<br>Abscissa to Plane (Straight Lead) (RXEF110 To RXEF300) H 18.5 ± 2.5<br>Abscissa to Plane (Kinked Lead) (RXEF010 To RXEF090) H0 16.0 ± 0.5<br>Abscissa to Top (RXEF010 To RXEF090) H1 32.2 Maximum<br>Abscissa to Top* (RXEF110 To RXEF300) H1 47.5 Maximum<br>Overall Width with Lead Protrusion (RXEF010 To RXEF090) C1 43.2 Maximum<br>Overall Width with Lead Protrusion* (RXEF110 To RXEF300) C1 58 Maximum<br>Overall Width without Lead Protrusion (RXEF010 To RXEF090) C2 42.5 Maximum<br>Overall Width without Lead Protrusion* (RXEF110 To RXEF300) C2 57.0 Maximum<br>Lead Protrusion L1 1.0 Maximum<br>Protrusion of Cut-Out L 11.0 Maximum<br>Protrusion beyond Hold-down Tape I2 Not Specified —<br>Sprocket Hole Pitch P0 12.7 ± 0.3<br>Device Pitch (RXEF010 To RXEF090) — 12.7 ± 0.3<br>Device Pitch (RXEF110 To RXEF300) — 25.4 ± 0.61<br>Pitch Tolerance — 20 Consecutive ± 1<br>Tape Thickness T 0.9 Maximum<br>Overall Tape and Lead Thickness (RXEF010 To RXEF090) T1 1.5 Maximum<br>Overall Tape and Lead Thickness (RXEF110 To RXEF300) T1 2.3 Maximum<br>Splice Sprocket Hole Alignment — 0 ± 0.3<br>Body Lateral Deviation h 0 ± 1.0<br>Body Tape Plane Deviation p 0 ± 1.3<br>Ordinate to Adjacent Component Lead (RXEF010 To RXEF185) P1 3.81 ± 0.7<br>Ordinate to Adjacent Component Lead (RXEF250 To RXEF300) P1 7.62 ± 0.7<br>Lead Spacing* (RXEF010 To RXEF185) F 5.05 ± 0.75<br>Lead Spacing* (RXEF250 To RXEF300) F 10.15 ± 0.75<br>Reel Width (RXEF010 To RXEF090) W2 56.0 Maximum<br>Reel Width* (RXEF110 To RXEF300) W2 63.5 Maximum<br>Reel Diameter A 370.0 Maximum<br>Space between Flanges* (RXEF010 To RXEF090) W1 48.0 Maximum<br>Space between Flanges* (RXEF110 To RXEF300) W1 55.0 Maximum<br>Arbor Hold Diameter C 26.0 ± 12.0<br>Core Diameter* N 91.0 Maximum<br>Box — 64/372/362 Maximum<br>Consecutive Missing Places — None —<br>Empty Places per Reel — 0.1% Maximum<br>**----- End of picture text -----**<br> *Differs from EIA specification. © 2018 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 10/22/18 **PolySwitch[®] Resettable PTCs** Radial Leaded > RXEF Series **==> picture [93 x 32] intentionally omitted <==** ## **Tape and Reel Diagrams** **==> picture [447 x 369] 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 D4 H0 W5<br>W<br>I2<br>L1 P0 D0 Direction of Unreeling<br>Figure 1 Cross Section A-B<br>t<br>Reel<br>Upper Side<br>n<br>Type<br>a Direction of<br>Unreeling<br>Lower Side<br>c<br>w 1<br>Cross Section<br>w 2<br>Optional Shape: Circular or Polygonal<br>Figure 2<br>**----- End of picture text -----**<br> ## **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. © 2018 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 10/22/18
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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