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102PS1J
PTC THERMISTOR, AXIAL LEADED, 150DEG C
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- Manufacturer: LITTELFUSE
- Product type: PTC Thermistors
- Resistance (25°C):1kohm; PTC Thermistor Mounting:Through Hole; Product Range:-; Operating Voltage Max:-; Operating Temperature Min:-55°C; Operating Temperature 43AC9736
- Trip Current: -
- Product Range: -
- Qualification: -
- Thermistor Type: Glass Encapsulated, Axial Leaded
- Resistance (25°C): 1kohm
- Holding Current Max: -
- Operating Voltage Max: -
- PTC Thermistor Diameter: 1.91mm
- PTC Thermistor Mounting: Through Hole
- Operating Temperature Max: 150°C
- Operating Temperature Min: -55°C
- Switching Temperature Max: -
- Switching Temperature Min: -
- Resistance Tolerance (25°C): ± 5%
- Automotive Qualification Standard: -
| Delivery and price | |
|---|---|
| Units per pack | 5000 |
| Price | 1.02 € |
| Current stock | 100+ |
| Lead time | 30 days |
Datasheet
**Leaded Thermistors** Glass Encapsulated Thermistor ## - DO 35 Standard Series Glass E ~~ncapsulated Thermistors~~ ## **Description** Littelfuse low cost glass encapsulated thermistors are manufactured using super stable NTC chips which are hermetically sealed in a glass (DO-35 diode style) package. The result is a device which exhibits excellent long term reliability and stability even when subjected to severe environmental or thermal conditions. Their uniform dimensions and axial lead configuration make them especially suitable for use with automatic insertion equipment. ## **Options** ## **Dimensions** - [[Speacial Lead Forms]] - [[Speacial Lead Forms]] •[Point matched at ] - •[Non-standard ] specified temperatures resistance values •[Tape and Reel ] and tolerances Packaging **==> picture [245 x 82] intentionally omitted <==** **----- Start of picture text -----**<br> GLASS<br>BODY<br>TINNED CCS, 1.0" LONG MIN<br>A<br>C<br>ah!C )<br>B<br>a ke<br>**----- End of picture text -----**<br> ## **Features** - [High temperature ] •[Excellent long-term ] capability to +300°C stability - [High Voltage Insulation] - [Hermetically sealed ] glass package - [Tinned CSS Lead ] - •[Low cost ] Wires are Solderable or Weldable ## Dimensions shown in inches. ||**A**|**B**|**C**| |---|---|---|---| ||||| |24 AWG Tinned CCS|0.020”±0.002”<br>24 AWG Tinned CCS<br>1.0” Long Min|0.075”<br>Max|0.160”<br>Max| ## **Part Numbering System** **==> picture [234 x 98] intentionally omitted <==** **----- Start of picture text -----**<br> 10 2 B G 1 A<br>Resistance @ 25ºC Resistance Tolerance<br>Base Value F = ±1%<br>G = ±2%<br>Multiplier, power of 10 J = ±5%<br>K = ±10%<br>Ex. 103 = 10 Ω x 10 [3 ] = 10,000 Ω<br>R-T Curve No Significance<br>Accuracy<br>**----- End of picture text -----**<br> Note: Not all combinations of Part Number codes are available. Contact Littelfuse for details. © 2021 Littelfuse, Inc. Revised: April 15, 2021 Specifications are subject to change without notice. littelfuse.com **1** **Leaded Thermistors** Glass Encapsulated Thermistor **==> picture [93 x 32] intentionally omitted <==** ## - DO 35 Standard Series Glass E ~~ncapsulated Thermistors~~ **==> picture [506 x 576] intentionally omitted <==** **----- Start of picture text -----**<br> Specifications<br>Thermal Thermal<br>Resistance *Resistance Temperature Dissipation Time Time Temperature<br>Part R-T Coefficient Beta (K) Beta (K) Constant, Constant, Constant,<br>Ohms Tol. ± % Range<br>Number Curve (%/°C) 0-50°C 25-85°C Nominal Max. - Max. - Well<br>@25°C @ 25°C @ 25°C (mW/°C) Still Air Stirred Oil (°C)<br>(seconds) (seconds)<br>501BG1J 500 5 B -3.31 2941 _ 2 5 0.5 -55 to +220<br>501BG1K 500 10 B -3.31 2941 _ 2 5 0.5 -55 to +220<br>102BG1J 1000 5 B -3.31 2941 _ 2 5 0.5 -55 to +220<br>102BG1K 1000 10 B -3.31 2941 _ 2 5 0.5 -55 to +220<br>102EG1K 1000 10 E -3.67 3263 _ 2 5 0.5 -55 to +220<br>102PS1G 1000 2 _ _ _ _ 2 8 1 -55 to +150<br>102PS1J 1000 5 _ _ _ _ 2 8 1 -55 to +150<br>162PS1J 1600 5 _ _ _ _ 2 8 1 -55 to +300<br>182FG1K 1800 10 F -3.86 3419 _ 2 5 0.5 -55 to +300<br>202FG1J 2000 5 F -3.86 3419 _ 2 5 0.5 -55 to +300<br>202FG1K 2000 10 F -3.86 3419 _ 2 5 0.5 -55 to +300<br>202PS1J 2000 5 _ _ _ _ 2 8 1 -55 to +300<br>252BG1K 2500 10 B -3.3 2941 _ 2 5 0.5 -55 to +220<br>252FG1J 2500 5 F -3.86 3419 _ 2 5 0.5 -55 to +300<br>252FG1K 2500 10 F -3.86 3419 _ 2 5 0.5 -55 to +300<br>282FG1K 2800 10 F -3.86 3419 _ 2 5 0.5 -55 to +300<br>222E1G1K 2186 10 E1 -3.82 3320 _ 2 5 0.5 -55 to +300<br>302FG1K 3000 10 F -3.86 3419 _ 2 5 0.5 -55 to +300<br>302JG1K 3000 10 J -4.4 3892 _ 2 5 0.5 -55 to +300<br>282FG1K 2800 10 F -3.86 3419 _ 2 5 0.5 -55 to +300<br>302FG1K 3000 10 F -3.86 3419 _ 2 5 0.5 -55 to +300<br>302JG1K 3000 10 J -4.4 3892 _ 2 5 0.5 -55 to +300<br>**----- End of picture text -----**<br> *Resistance tolerances of ± 1%, 2%, and 5% are available upon request © 2021 Littelfuse, Inc. Revised: April 15, 2021 Specifications are subject to change without notice. littelfuse.com **2** **Leaded Thermistors** Glass Encapsulated Thermistor **==> picture [93 x 33] intentionally omitted <==** ## - DO 35 Standard Series Glass E ~~ncapsulated Thermistors~~ ## **Specifications** **==> picture [506 x 554] intentionally omitted <==** **----- Start of picture text -----**<br> Thermal Thermal<br>Resistance *Resistance Temperature Dissipation Time Time Temperature<br>Part R-T Coefficient Beta (K) Beta (K) Constant, Constant, Constant,<br>Ohms Tol. ± % Range<br>Number Curve (%/°C) 0-50°C 25-85°C Nominal Max. - Max. - Well<br>@25°C @ 25°C @ 25°C (mW/°C) Still Air Stirred Oil (°C)<br>(seconds) (seconds)<br>332FG1K 3300 10 F -3.86 3419 _ 2 5 0.5 -55 to +300<br>402FG4K 4000 10 F13 -3.88 3453 3540 2 5 0.5 -55 to +300<br>502E1G1K 5000 10 E1 -3.82 3320 _ 2 5 0.5 -55 to +300<br>502FG1J 5000 5 F -3.86 3419 _ 2 5 0.5 -55 to +300<br>502FG1K 5000 10 F -3.86 3419 _ 2 5 0.5 -55 to +300<br>502JG1K 5000 10 J -4.4 3892 _ 2 5 0.5 -55 to +300<br>682JG1K 6800 10 J -4.4 3892 _ 2 5 0.5 -55 to +300<br>822JG1K 8200 10 J -4.4 3892 _ 2 5 0.5 -55 to +300<br>123GG1K 12000 10 G -4.03 3575 _ 2 5 0.5 -55 to +150<br>123JG1K 12000 10 J -4.4 3892 _ 2 5 0.5 -55 to +150<br>153JG1K 15000 10 J -4.4 3892 _ 2 5 0.5 -55 to +300<br>203JG1F 20000 1 J -4.4 3892 _ 2 5 0.5 -55 to +300<br>203JG1J 20000 5 J -4.4 3892 _ 2 5 0.5 -55 to +300<br>103E1G1F 10000 1 E1 _ 3320 3435 2 5 0.5 -55 to +250<br>103E1G1K 10000 10 E1 _ 3320 _ 2 5 0.5 -55 to +300<br>103FG1K 10000 10 F -3.86 3419 _ 2 5 0.5 -55 to +300<br>103GG1K 10000 10 G -4.04 3575 _ 2 5 0.5 -55 to +300<br>103JG1F 10000 1 J -4.4 3892 _ 2 5 0.5 -55 to +300<br>103JG1G 10000 2 J -4.4 3892 _ 2 5 0.5 -55 to +300<br>103JG1J 10000 5 J -4.4 3892 _ 2 5 0.5 -55 to +300<br>103JG1K 10000 10 J -4.4 3892 _ 2 5 0.5 -55 to +300<br>103JG1KE 10000 10 J -4.4 3892 _ 2 5 0.5 -55 to +300<br>**----- End of picture text -----**<br> *Resistance tolerances of ± 1%, 2%, and 5% are available upon request © 2021 Littelfuse, Inc. Revised: April 15, 2021 Specifications are subject to change without notice. littelfuse.com **3** **Leaded Thermistors** Glass Encapsulated Thermistor **==> picture [93 x 32] intentionally omitted <==** ## - DO 35 Standard Series Glass E ~~ncapsulated Thermistors~~ ## **Specifications** **==> picture [506 x 554] intentionally omitted <==** **----- Start of picture text -----**<br> Thermal Thermal<br>Resistance *Resistance Temperature Dissipation Time Time Temperature<br>Part R-T Coefficient Beta (K) Beta (K) Constant, Constant, Constant,<br>Ohms Tol. ± % Range<br>Number Curve (%/°C) 0-50°C 25-85°C Nominal Max. - Max. - Well<br>@25°C @ 25°C @ 25°C (mW/°C) Still Air Stirred Oil (°C)<br>(seconds) (seconds)<br>203JG1K 20000 10 J -4.4 3892 _ 2 5 0.5 -55 to +300<br>253JG1F 25000 1 J _ 3892 _ 2 5 0.5 -55 to +300<br>253JG1K 25000 10 J -4.4 3892 _ 2 5 0.5 -55 to +300<br>303HG1K 30000 10 H -4.29 3810 _ 2 5 0.5 -55 to +300<br>303JG1F 30000 1 J -4.4 3892 _ 2 5 0.5 -55 to +300<br>303JG1J 30000 5 J --4.4 3892 _ 2 5 0.5 -55 to +300<br>303JG1K 30000 10 J -4.4 3892 _ 2 5 0.5 -55 to +300<br>403GG1K 40000 10 G -3.88 3575 _ 2 5 0.5 -55 to +300<br>503JG1F 50000 1 J -4.4 3892 _ 2 5 0.5 -55 to +300<br>503JG1J 50000 5 J -4.4 3892 _ 2 5 0.5 -55 to +300<br>503JG1K 50000 10 J -4.4 3892 _ 2 5 0.5 -55 to +300<br>683N1G1K 68000 10 N1 -4.5 3991 _ 2 5 0.5 -55 to +300<br>753JG1K 75000 10 J -4.4 3892 _ 2 5 0.5 -55 to +300<br>104JG1F 100000 1 J -4.4 3892 _ 2 5 0.5 -55 to +300<br>104JG1H 100000 3 J -4.4 3892 _ 2 5 0.5 -55 to +300<br>104JG1J 100000 5 J -4.4 3892 _ 2 5 0.5 -55 to +300<br>104JG1K 100000 10 J -4.4 3892 _ 2 5 0.5 -55 to +300<br>104LG2K 100000 10 L1 -4.52 3920 4040 2 5 0.5 -55 to +300<br>104N1G1K 100000 10 N1 -4.5 3991 _ 2 5 0.5 -55 to +300<br>104RG1J 100000 5 R -4.68 4140 _ 2 5 0.5 -55 to +300<br>104RG1K 100000 10 R -4.68 4140 _ 2 5 0.5 -55 to +300<br>224JG1K 220000 10 J -4.4 3892 _ 2 5 0.5 -55 to +300<br>**----- End of picture text -----**<br> *Resistance tolerances of ± 1%, 2%, and 5% are available upon request © 2021 Littelfuse, Inc. Revised: April 15, 2021 Specifications are subject to change without notice. littelfuse.com **4** **Leaded Thermistors** Glass Encapsulated Thermistor **==> picture [93 x 33] intentionally omitted <==** ## - DO 35 Standard Series Glass E ~~ncapsulated Thermistors~~ ## **Specifications** **==> picture [506 x 378] intentionally omitted <==** **----- Start of picture text -----**<br> Thermal Thermal<br>Resistance *Resistance Temperature Dissipation Time Time Temperature<br>Part R-T Coefficient Beta (K) Beta (K) Constant, Constant, Constant,<br>Ohms Tol. ± % Range<br>Number Curve (%/°C) 0-50°C 25-85°C Nominal Max. - Max. - Well<br>@25°C @ 25°C @ 25°C (mW/°C) Still Air Stirred Oil (°C)<br>(seconds) (seconds)<br>234RG1G 230000 2 R -4.68 4140 _ 2 5 0.5 -55 to +300<br>254JG1J 250000 5 J -4.4 3892 3977 2 5 0.5 -55 to +300<br>254JG1K 250000 10 J -4.4 3892 _ 2 2 0.5 -55 to +300<br>304JG1K 300000 10 J -4.4 3892 _ 2 5 0.5 -55 to +300<br>334RG1K 330000 10 R -4.68 4140 4263 2 5 0.5 -55 to +300<br>504RG1J 500000 5 R -4.68 4140 _ 2 5 0.5 -55 to +300<br>504RG1K 500000 10 R -4.68 4140 _ 2 5 0.5 -55 to +300<br>105RG1J 1000000 5 R -4.68 4140 _ 2 5 0.5 -55 to +220<br>105RG1K 1000000 10 R -4.68 4140 _ 2 5 0.5 -55 to +220<br>105V3G1K 1000000 10 V3 -4.68 4369 _ 2 5 0.5 -55 to +220<br>205RG1K 2000000 10 R -4.68 4140 _ 2 5 0.5 -55 to +300<br>205V4G1K 2000000 10 V4 -4.85 4288 _ 2 5 0.5 -55 to +300<br>375Y1G2K 3700000 10 Y1 -5.33 4584 4800 2 5 0.5 -55 to +300<br>505YG7K 5000000 10 Y -5.22 4640 _ 2 5 0.5 -55 to +300<br>**----- End of picture text -----**<br> *Resistance tolerances of ± 1%, 2%, and 5% are available upon request |**Packaging**|||| |---|---|---|---| |Packaging Option|Packaging Code|Standard Quantity|Standard| |Tape and Reel|-TR|5000|EIA-296| **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. Revised: April 15, 2021 Specifications are subject to change without notice. littelfuse.com **5**
Updated at April 26, 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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