# CMFB333J3950HANT

**FH Guangdong Fenghua Advanced Tech** · NTC Thermistors · 0805

CMFB333J3950HANT from FH Guangdong Fenghua Advanced Tech, in a 0805. 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 | First terminal electrode of the 0805 chip NTC thermistor (Ag with Ni/Sn plating, M 0.15 mm min), non-polarized and interchangeable with the other terminal. |
| 2 | 2 | passive | Second terminal electrode of the 0805 chip NTC thermistor (Ag with Ni/Sn plating, M 0.15 mm min), non-polarized and interchangeable with the other terminal. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | FH Guangdong Fenghua Advanced Tech |
| Package | 0805 |
| 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 (part-number code J) |  | -5 |  | 5 | % | Tolerance of R25, code J; table prints ±5.0 | 5 |
| Tolerance of B value (part-number code H) |  | -3 |  | 3 | % | Tolerance of B value, code H; table prints ±3.0 | 5 |
| Operating Temperature Range |  | -40 |  | 120 | ℃ | Operating Temperature Range | 9 |

## 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: `CMFB333J3950HANT`
- Footprint: `Resistor_SMD:R_0805_2012Metric`
- 3D model: 0805 (KiCad packages3D, STEP)
- 3D model files: `cmfb333j3950hant-etched.step` / `cmfb333j3950hant-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `cmfb333j3950hant.step` / `cmfb333j3950hant.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/8588931345770811392) (16 pp, sha256 `948dd3258c7690f4`, retrieved 2026-10-17, 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:** 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/cmfb333j3950hant-datasheet.pdf)