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README.md b57221v2103j060: laser-etched CAD + chip hero (factory 2.0.0 backfill) · Ray

B57221V2103J060

TDK · NTC Thermistors · 0402

B57221V2103J060 from TDK, in a 0402. 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 Termination 1 of the two-terminal NTC thermistor. Non-polarized nickel-barrier SMD termination; resistance to termination 2 is 10 kΩ ±5% at 25 °C and decreases with temperature per R/T characteristic 8502 (B25/100 = 4000 K).
2 2 passive Termination 2 of the two-terminal NTC thermistor. Non-polarized nickel-barrier SMD termination; forms the second electrode of the multilayer NTC element with resistance 10 kΩ ±5% at 25 °C, max power 150 mW (on PCB).

Key specifications

Parameter Value
Manufacturer TDK
Package 0402
Category Sensors
Pins 2

Ordering variants

Same part, different packaging or reel option.

  • B57221V2103J060

CAD (KiCad official)

  • Symbol: B57221V2103J060
  • Footprint: Resistor_SMD:R_0402_1005Metric
  • 3D model: 0402 (KiCad packages3D, STEP)
  • 3D model files: b57221v2103j060-etched.step / b57221v2103j060-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); b57221v2103j060.step / b57221v2103j060.glb are the bare package body.

Provenance

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

  • Datasheet: TDK datasheet (20 pp, sha256 b91bd0259291b820, 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