SM103J1K-TR
NTC THERMISTOR, 3892K, 10KOHM, SOD-80
- Manufacturer: LITTELFUSE
- Product type:
- Thermistor Type:Chip; Resistance (25°C):10kohm; Product Range:SM Series; B-Constant:3892K; B-Constant Tolerance:-; Probe Material:-; Lead Length:-; Operating Tem 27AM6647
| Delivery and price | |
|---|---|
| Units per pack | 250 |
| Price | 0.363 € |
| Current stock | 1000+ |
| Lead time | 30 days |
**Surface Mount Thermistors** MELF Style Thermistor ## LL 34 MiniMELF SM ## **Description** Littelfuse LL-34 “MiniMELF” style glass encapsulated surface mount thermistors are manufactured using super stable NTC chips which are hermetically sealed in a glass 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 make them especially suitable for use with automatic insertion equipment. ## **Options** - [Non-standard ] •[Point matched at ] resistance values specified temperatures and tolerances •[Tape and Reel ] Packaging ## **Dimensions** **==> picture [235 x 84] intentionally omitted <==** **----- Start of picture text -----**<br> A<br>TINNED<br>DUMET<br>CONTACT<br> TABS<br>C B<br>GLASS<br>. t L ;<br>BODY<br>**----- End of picture text -----**<br> ## Dimensions shown in inches. |**A**<br>0.135”<br>± 0.012”|**B**<br>0.019”<br>± 0.005”|**C**<br>0.060”<br>± 0.005”| |---|---|---| ## **Features** - [High temperature ] •[ Low cost] capability to +220°C - [Excellent long-term ] - •[Surface mountable] stability - [Hermetically sealed ] glass package ## **Part Numbering System** **==> picture [222 x 99] intentionally omitted <==** **----- Start of picture text -----**<br> SM 10 2 B 1 K<br>Series Resistance Tolerance<br>F = ±1%<br>Resistance @ 25ºC K = ±10%<br>Base Value No Significance<br>Multiplier, power of 10 AE R-T Curve<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. © 2018 Littelfuse, Inc. Revised: February 26, 2018 Specifications are subject to change without notice. littelfuse.com **1** **Surface Mount Thermistors** MELF Style Thermistor **==> picture [93 x 32] intentionally omitted <==** ## LL 34 MiniMELF SM **==> picture [505 x 576] intentionally omitted <==** **----- Start of picture text -----**<br> Specifications<br>Thermal Time<br>Dissipation<br>Resistance *Resistance Temperature Constant, Temperature<br>Part R-T Beta (K) Constant,<br>Ohms Tol. ± % Coefficient Max. - Rating<br>Number Curve 0-50°C Nominal<br>@25°C @ 25°C (%/°C) @ 25°C Still Air (°C)<br>(mW/°C)<br>(seconds)<br>SM102B1K 1000 10 B -3.3 2941 2 8 -55 to +220<br>SM102D1K 1000 10 D2 _ 3156 2 8 -55 to +220<br>SM102E1K 1000 10 E -3.67 3263 2 8 -55 to +220<br>SM202F1K 2000 10 F -3.86 3419 2 8 -55 to +220<br>SM222E1K 2186 10 E1 -3.82 3320 2 8 -55 to +220<br>SM252B1K 2500 10 B -3.31 2941 2 8 -55 to +220<br>SM252B4K 2500 10 B -3.31 2941 2 8 -55 to +220<br>SM103F5K 10000 10 F -3.86 3419 2 8 -55 to +220<br>SM103G1K 10000 10 G -4.04 3575 2 8 -55 to +220<br>SM103J1F 10000 1 J -4.4 3892 2 8 -55 to +220<br>SM103J1K 10000 10 J -4.4 3892 2 8 -55 to +220<br>SM403J1K 10000 10 J -4.4 3892 2 8 -55 to +220<br>SM472F1K 10000 10 F -3.86 3419 2 8 -55 to +220<br>SM472G1K 10000 10 G -4.03 3575 2 8 -55 to +220<br>SM501B1K 10000 10 B -3.31 2941 2 8 -55 to +220<br>SM153J1K 15000 10 J -4.4 3892 2 8 -55 to +220<br>SM602F1K 15000 10 F -3.86 3419 2 8 -55 to +220<br>SM203J1K 20000 10 J -4.4 3892 2 8 -55 to +220<br>SM253J1K 25000 10 J -4.4 3892 2 8 -55 to +220<br>SM303J1K 30000 10 J -4.4 3892 2 8 -55 to +220<br>SM104J1F 100000 1 J -4.4 3892 2 8 -55 to +220<br>SM104J1K 100000 10 J -4.4 3892 2 8 -55 to +220<br>**----- End of picture text -----**<br> *Resistance tolerances of ± 1%, 2%, and 5% are available upon request © 2018 Littelfuse, Inc. Revised: February 26, 2018 Specifications are subject to change without notice. littelfuse.com **2** **Surface Mount Thermistors** MELF Style Thermistor **==> picture [93 x 33] intentionally omitted <==** ## **Specifications** **==> picture [506 x 243] intentionally omitted <==** **----- Start of picture text -----**<br> Thermal Time<br>Temperature Dissipation<br>Resistance *Resistance Constant, Temperature<br>Part R-T Coefficient Beta (K) Constant,<br>Ohms Tol. ± % Max. - Rating<br>Number Curve (% / °C) 0-50°C Nominal<br>@25°C @ 25°C Still Air (°C)<br>@ 25°C (mW/°C)<br>(seconds)<br>SM104J1O 100000 _ J -4.4 3892 2 8 -55 to +220<br>SM104R1K 100000 10 R -4.68 4140 2 8 -55 to +220<br>SM502F1K 100000 10 F -3.86 3419 2 8 -55 to +220<br>SM503J1K 100000 10 J -4.4 3892 2 8 -55 to +220<br>SM504R1K 100000 10 R -4.68 4140 2 8 -55 to +220<br>SM254R1K 250000 10 R -4.68 4140 2 8 -55 to +220<br>SM105V3K 1000000 10 V3 -4.93 4369 2 8 -55 to +220<br>SM105R1K 1000000 10 R -4.68 4140 2 8 -55 to +220<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|2500|EIA-481| **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. Revised: February 26, 2018 Specifications are subject to change without notice. littelfuse.com **3**
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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