501FH1K
NTC THERMISTOR, 3419K, 500 OHM, TH
- Manufacturer: LITTELFUSE
- Product type:
- Thermistor Type:Glass Encapsulated, Axial Leaded; Resistance (25°C):500ohm; Product Range:-; B-Constant:3419K; B-Constant Tolerance:-; Probe Material:-; Lead Length 52AC9988
| Delivery and price | |
|---|---|
| Units per pack | 1000 |
| Price | 0.413 € |
| Current stock | 200+ |
| Lead time | 30 days |
**Leaded Thermistors** Glass Encapsulated Thermistor ## DO-41 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-41 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** - [Non-standard ] •[Tape and Reel ] resistance values Packaging and tolerances ## **Dimensions** - [Point matched at ] specified temperatures **==> picture [239 x 114] intentionally omitted <==** **----- Start of picture text -----**<br> GLASS<br>BODY<br>A<br>B<br>a ht( )<br>C<br>ne<br>Dimensions shown in inches.<br>**----- End of picture text -----**<br> |**A**|**B**|**C**| |---|---|---| |||| |0.0256”±0.003” Dia<br>22 AWG Tinned CCS<br>1.0” Long Min|0.110”<br>Max|0.170”<br>Max| ## **Features** - [High temperature ] •[Excellent long-term ] capability to +300°C stability - [Hermetically sealed ] •[Tinned CSS Lead ] glass package Wires are Solderable or Weldable - [Low cost] - [High voltage insulation] ## **Part Numbering System** **==> picture [236 x 88] intentionally omitted <==** **----- Start of picture text -----**<br> 10 1 B H 1 K<br>Resistance @ 25ºC Resistance Tolerance<br>Base Value K = ±10%<br>Multiplier, power of 10 No Significance<br>Ex. 101 = 10 Ω x 10 [1 ] = 100 Ω<br>DO-41 Glass Package<br>R-T Curve my<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** Glass Encapsulated Thermistor **==> picture [93 x 32] intentionally omitted <==** ## DO-41 Standard Series Glass E ~~ncapsulated Thermistors~~ ## **Specifications** **==> picture [506 x 271] intentionally omitted <==** **----- Start of picture text -----**<br> Thermal Thermal<br>Dissipation Time Time<br>Resistance *Resistance Temperature Temperature<br>Part R-T Beta (K) Constant, Constant, Constant,<br>Ohms Tol. ± % Coefficient Rating<br>Number Curve 0-50°C Nominal Max. - Max. - Well<br>@25°C @ 25°C (% / °C) @ 25°C (mW/°C) Still Air Stirred Oil (°C)<br>(seconds) (seconds)<br>101BH1K 100 10 B -3.31 2941 3 8 2 -55 to +220<br>501FH1K 500 10 F -3.86 3419 3 8 2 -55 to +300<br>102FH1K 1000 10 F -3.86 3419 3 8 2 -55 to +300<br>202JH1K 2000 10 J -4.4 3892 3 8 2 -55 to +300<br>222JH1K 2252 10 J -4.4 3892 3 8 2 -55 to +300<br>302JH1K 3000 10 J -4.4 3892 3 8 2 -55 to +300<br>502JH1K 5000 10 J -4.4 3890 3 8 2 -55 to +300<br>203RH1K 20000 10 R -4.68 4140 3 8 2 -55 to +300<br>333RH1K 33000 10 R -4.68 4140 3 8 2 -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: 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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