component
B57421V2222J062
Public Made by Adomby adom
TDK NTC Thermistors, 0805. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+41@@ -0,0 +1,41 @@+# B57421V2222J062++**TDK** · NTC Thermistors · 0805++B57421V2222J062 from TDK, 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 | Thermistor terminal 1 (nickel barrier SMD termination). Non-polarized; interchangeable with pin 2. Resistance to pin 2 is 2.2 kΩ ±5% at 25 °C, decreasing with temperature per NTC R/T curve 8502 (B25/100 = 4000 K). |+| 2 | 2 | passive | Thermistor terminal 2 (nickel barrier SMD termination). Non-polarized; interchangeable with pin 1. Max power dissipation 210 mW at 25 °C on PCB; dissipation factor ~3.5 mW/K. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | TDK |+| Package | 0805 |+| Category | Sensor |+| Pins | 2 |++## Ordering variants++- `B57421V2222J062`++## CAD (KiCad official)++- Symbol: `B57421V2222J062`+- Footprint: `Resistor_SMD:R_0805_2012Metric`+- 3D model: 0805 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [TDK datasheet](docs/b57421v2222j062-datasheet.pdf) (27 pp, sha256 `8e724df0e093127a`, retrieved 2026-08-17, tier: lcsc)+- **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).++[Datasheet PDF](docs/b57421v2222j062-datasheet.pdf)
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