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CMFB 503F3950
Public Made by Adomby adom
Nanjing Shiheng Elec NTC Thermistors, 0805. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownCMFB 503F3950
Nanjing Shiheng Elec · NTC Thermistors · 0805
CMFB 503F3950 from Nanjing Shiheng Elec, in a 0805. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | 1 | passive | External electrode terminal 1 of the two-terminal NTC thermistor. Non-polarized; either terminal may be used as input or output. Resistance between terminals is ~50 kΩ at 25 °C, decreasing with temperature per the R-T table. |
| 2 | 2 | passive | External electrode terminal 2 of the two-terminal NTC thermistor. Non-polarized; interchangeable with terminal 1. Combined with terminal 1 forms the NTC resistance element (50 kΩ ±1% @ 25 °C, B = 3950 K). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Nanjing Shiheng Elec |
| Package | 0805 |
| Category | Sensor |
| Pins | 2 |
Ordering variants
Same part, different packaging or reel option.
CMFB 503F3950B
CAD (KiCad official)
- Symbol:
CMFB 503F3950 - Footprint:
Resistor_SMD:R_0805_2012Metric - 3D model: 0805 (KiCad packages3D, STEP)
- 3D model files:
cmfb-503f3950-etched.step/cmfb-503f3950-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);cmfb-503f3950.step/cmfb-503f3950.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Nanjing Shiheng Elec datasheet (13 pp, sha256
b97d3c412e07c2b3, retrieved 2026-08-17, tier: lcsc) - Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- Extractor:
ds2sf(Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate. - CAD: KiCad official libraries (CC-BY-SA 4.0).