# CMFA473J3950HANT

**FH Guangdong Fenghua Advanced Tech** · NTC Thermistors · 0603

CMFA473J3950HANT from FH Guangdong Fenghua Advanced Tech, in a 0603. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

## Pinout

| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | 1 | passive | One terminal electrode of the non-polarized NTC thermistor (Ni/Sn plated Ag end termination), 0603 body 1.6±0.15 x 0.8±0.15 mm, operating range -40°C to +120°C. |
| 2 | 2 | passive | Second terminal electrode of the non-polarized NTC thermistor (Ni/Sn plated Ag end termination), interchangeable with the other terminal, operating range -40°C to +120°C. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | FH Guangdong Fenghua Advanced Tech |
| Package | 0603 |
| Category | Sensors |
| Pins | 2 |

## Electrical characteristics

Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Tolerance of R25 | R25 | -5 |  | 5 | % | Tolerance code J per part-numbering item ④ (±5.0%) | 5 |
| Tolerance of B value | B25/50 | -3 |  | 3 | % | Tolerance code H per part-numbering item ⑥ (±3.0%) | 5 |
| Operating temperature range |  | -40 |  | 120 | ℃ | Reliability item 1, operating temperature range | 9 |
| R25 change after resistance to soldering | R25 | -5 |  | 5 | % | Soldering 260±5℃, immersion 10±0.5 s | 9 |
| B25/50 change after resistance to soldering | B25/50 | -2 |  | 2 | % | Soldering 260±5℃, immersion 10±0.5 s | 9 |
| R25 change after vibration | R25 | -5 |  | 5 | % | Frequency 10-55-10 Hz, amplitude 1.52 mm, 2 h per X/Y/Z axis | 10 |
| B25/50 change after vibration | B25/50 | -2 |  | 2 | % | Frequency 10-55-10 Hz, amplitude 1.52 mm, 2 h per X/Y/Z axis | 10 |
| R25 change after resistance to flexure | R25 | -5 |  | 5 | % | Camber 0.7 mm (0603), pressing speed 0.5 mm/s | 10 |
| B25/50 change after resistance to flexure | B25/50 | -2 |  | 2 | % | Camber 0.7 mm (0603), pressing speed 0.5 mm/s | 10 |
| R25 change after drop | R25 | -5 |  | 5 | % | Drop 10 times on concrete from 1 m | 10 |
| B25/50 change after drop | B25/50 | -2 |  | 2 | % | Drop 10 times on concrete from 1 m | 10 |
| R25 change after high temperature storage | R25 | -5 |  | 5 | % | 125±2℃, no load, 500±2 h | 10 |
| B25/50 change after high temperature storage | B25/50 | -2 |  | 2 | % | 125±2℃, no load, 500±2 h | 10 |
| R25 change after low temperature storage | R25 | -5 |  | 5 | % | -40±2℃, 500±2 h | 11 |
| B25/50 change after low temperature storage | B25/50 | -2 |  | 2 | % | -40±2℃, 500±2 h | 11 |
| R25 change after constant humidity heat | R25 | -5 |  | 5 | % | 55±2℃, 90-95%RH, 500±2 h | 11 |
| B25/50 change after constant humidity heat | B25/50 | -2 |  | 2 | % | 55±2℃, 90-95%RH, 500±2 h | 11 |
| R25 change after temperature cycling | R25 | -5 |  | 5 | % | 32 cycles without load, -40℃ to +125℃ | 11 |
| B25/50 change after temperature cycling | B25/50 | -2 |  | 2 | % | 32 cycles without load, -40℃ to +125℃ | 11 |

## Materials and finish

As the datasheet states them (page.json `metadata.appearance`; the 3D model's colours follow it).

| Part | Material | Colour / plating | Datasheet says | Page |
|---|---|---|---|---|
| contacts |  | tin | Terminal electrode 电镀层Ni/Sn plating 镍层-锡层Ni-Sn 单位Unit：mm（inch） | 4 |

## CAD (KiCad official)

- Symbol: `CMFA473J3950HANT`
- Footprint: `Resistor_SMD:R_0603_1608Metric`
- 3D model: 0603 (KiCad packages3D, STEP)
- 3D model files: `cmfa473j3950hant-etched.step` / `cmfa473j3950hant-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `cmfa473j3950hant.step` / `cmfa473j3950hant.glb` are the bare package body.

## Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

- **Datasheet:** [FH Guangdong Fenghua Advanced Tech datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588930934968365056) (16 pp, sha256 `4c9736794eef5b23`, retrieved 2026-10-19, 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:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (text+vision), consensus `claude-opus-5-5` (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
- **CAD:** KiCad official libraries (CC-BY-SA 4.0).

[Datasheet PDF](docs/cmfa473j3950hant-datasheet.pdf)