KS103J2
NTC THERMISTOR, 10K, RADIAL LEADED
- Manufacturer: LITTELFUSE
- Product type:
- Thermistor Type:Bead; Resistance (25°C):10kohm; Product Range:KS Series; B-Constant:3892K; B-Constant Tolerance:-; Probe Material:-; Lead Length:38.1mm; Operating T 43AC9333
- B-Constant: 3892K
- Lead Length: 38.1mm
- NTC Mounting: Free Hanging
- NTC Case Size: -
- Product Range: KS Series
- Qualification: -
- Probe Diameter: -
- Probe Material: -
- Thermistor Type: Bead
- Resistance (25°C): 10kohm
- B-Constant Tolerance: -
- Thermistor Case Style: -
- Operating Temperature Max: 135°C
- Operating Temperature Min: -80°C
- Thermal Time Constant (in Air): 10s
- Automotive Qualification Standard: -
| Delivery and price | |
|---|---|
| Units per pack | 1000 |
| Price | 2.82 € |
| Current stock | 10+ |
| Lead time | 30 days |
**Leaded Thermistors** Interchangeable Thermistor ## KS Series Standard Precision I ~~nterchangeable Thermistors~~ ## **Description** Littelfuse precision interchangeable thermistors are low cost, highly accurate, stable devices designed specifically for temperature sensing and control applications. They are particularly suited for uses where their precision interchangeability eliminates the necessity for costly individual circuit calibration. ## **Options** - [Non-standard ] •[Special encapsulants or ] resistance values probe housings and tolerances - [Special lead materials ] and lengths ## **Features** ## **Dimensions** **==> picture [206 x 70] intentionally omitted <==** **----- Start of picture text -----**<br> B EPOXY<br>COATING<br>A KYNAR<br>INSULATED WIRE<br>“| No t<br>C<br>D<br>-+——_—_ -——J = as<br>**----- End of picture text -----**<br> - [High accuracy] - [Epoxy encapsulated] - [Fast thermal response] - [High stability] - [Long life] - [Low cost] - [Small size] •[R/T Curve-matched] ## **Part Numbering System** ## KS 10 2 J 2 Dimensions shown in inches. |**A**|**B**|**C**|**D**| |---|---|---|---| |0.250”|30 AWG|0.095”|1.5”| |Nom|0.010”|Max|±0.250”| **==> picture [186 x 72] intentionally omitted <==** **----- Start of picture text -----**<br> Series No Significance<br>R-T Curve<br>Resistance @ 25ºC<br>Base Value<br>Multiplier, power of 10<br>Ex. 102 = 10 Ω x 10 [2 ] = 1,000 Ω<br>**----- End of picture text -----**<br> Note: Not all combinations of Part Number codes are available. Contact Littelfuse for details. © 2021 Littelfuse, Inc. Revised: March 23, 2021 Specifications are subject to change without notice. littelfuse.com **1** **Leaded Thermistors** Interchangeable Thermistor **==> picture [93 x 32] intentionally omitted <==** ## KS Series Standard Precision I ~~nterchangeable Thermistors~~ ## **Specifications** **==> picture [468 x 371] intentionally omitted <==** **----- Start of picture text -----**<br> Thermal Thermal<br>Storage &<br>Temperature Dissipation Time Time<br>Resistance Accuracy Temperature Operation<br>Part R-T Coefficient Beta (K) Constant, Constant, Constant,<br>Ohms (±°C) Rating Temp for Best<br>Number Curve (% / °C) 0-50°C Nominal Max. - Still Max. - Well<br>@25°C 0-70°C (°C) L/T Stability<br>@ 25°C (mW/°C) Air Stirred Oil<br>(°C)<br>(seconds) (seconds)<br>KS102J2 1000 ±0.1°C J -4.4 3892 1 10 1 -80 to +135 -80 to +75<br>KS222J2 2252 ±0.1°C J -4.4 3892 1 10 1 -80 to +135 -80 to +75<br>KS302J2 3000 ±0.1°C J -4.4 3892 1 10 1 -80 to +135 -80 to +75<br>KS502J2 5000 ±0.1°C J -4.4 3892 1 10 1 -80 to +135 -80 to +75<br>KS602J2 6000 ±0.1°C J -4.4 3892 1 10 1 -80 to +135 -80 to +75<br>KS103G2 10000 ±0.1°C G -4.04 3575 1 10 1 -80 to +135 -80 to +75<br>KS103J2 10000 ±0.1°C J -4.4 3892 1 10 1 -80 to +135 -80 to +75<br>KS103J34 10000 ±0.1°C J -4.4 3892 1 10 1 -80 to +135 -80 to +75<br>KS203J2 20000 ±0.1°C J -4.4 3892 1 10 1 -80 to +135 -80 to +75<br>KS303J2 30000 ±0.1°C J -4.4 3892 1 10 1 -80 to +135 -80 to +75<br>KS503J2 50000 ±0.1°C J -4.4 3892 1 10 1 -80 to +135 -80 to +75<br>KS503R2 50000 ±0.1°C R -4.68 4140 1 10 1 -80 to +135 -80 to +75<br>KS104R2 100000 ±0.1°C R -4.68 4140 1 10 1 -80 to +135 -80 to +75<br>**----- End of picture text -----**<br> **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: March 23, 2021 Specifications are subject to change without notice. littelfuse.com **2**
Updated at June 8, 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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