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WK73R2BTTD21R0F

KOA Speer Elec · Chip Resistor - Surface Mount · 0612

WK73R2BTTD21R0F from KOA Speer Elec, in a 0612. 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 Terminal 1 of an unpolarised resistor; either orientation.
2 2 passive Terminal 2 of an unpolarised resistor; either orientation.

Key specifications

Parameter Value
Manufacturer KOA Speer Elec
Package 0612
Category Resistors
Pins 2

Electrical characteristics

Limits from the LCSC catalog entry for this part (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Resistance 21 Ω nominal, catalog attribute (LCSC C340328) catalog
Tolerance -1 1 % catalog attribute (LCSC C340328) catalog
Rated power 750 mW catalog attribute (LCSC C340328) catalog
Temperature coefficient TCR -100 100 ppm/°C catalog description (LCSC C340328) catalog
Operating temperature -55 155 °C catalog description (LCSC C340328) catalog

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 Wide Terminal Type Flat Chip Resistors 外观颜色:黑色 Coating color:Black 1

CAD (KiCad official)

  • Symbol: WK73R2BTTD21R0F
  • Footprint: Resistor_SMD:R_0612_1632Metric
  • 3D model: 0612 (KiCad packages3D, STEP)
  • 3D model files: wk73r2bttd21r0f-etched.step / wk73r2bttd21r0f-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); wk73r2bttd21r0f.step / wk73r2bttd21r0f.glb are the bare package body.

Provenance

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

  • Datasheet: KOA Speer Elec datasheet (2 pp, sha256 04dac8ee42ca6e19, retrieved 2026-10-16, 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, primary two-terminal convention (convention), consensus off (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