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BZW50-12B

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STMicroelectronics ESD And Surge Protection (TVS/ESD), R-6. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

componentcircuit protectionbzw50-12bfactory-2.0.0extractor-text

Verified BZW50-12B

by Ray · last 7 Nov 2026 · 1 record · files match
SymbolFootprint3D modelPins

Verification log 1 record

7 Nov 2026RayPublished by the parts factory: tier mfr, 2 pinsfiles match
SymbolFootprint3D modelPinsfor all variants
  • ✓component-page-verify: PASS
  • ✓cad_props: Datasheet, MPN and distributor properties match page.json
  • ✓component: BZW50-12B · R-6 · 2 pins
  • ✓copper: 2 copper pads, none touching another net
  • ✓datasheet: all 2 pin names found in the 12-page datasheet
  • ✓distributor: lcsc C5456157, digikey 497-12475-1-ND, mouser 511-BZW50-12B
  • ✓family: D_P600_R-6_P20.00mm_Horizontal
  • ✓files: 6 declared files present
  • ✓hero: docs/hero.png 4000x2500
  • ✓lbr: OK: /tmp/cpv-cj_flx6g/x.lbr is a valid EAGLE .lbr with complete deviceset
  • ✓license: CC-BY-SA-4.0
  • ✓models_3d: 1 records
  • •package_fit (skip): no component.package_dims on the page: the model is unchecked against the datasheet drawing
  • ✓pads: 2 pins = 2 pads
  • ✓pose: 1 STEP(s) Z-up, seated, centred
  • ✓symbol: 2 pins agree
  • ✓symbol_text: no pin names collide
  • ✓visibility: public, source open
Evidencedatasheet
Verified files✓ bzw50-12b.kicad_sym✓ bzw50-12b.kicad_mod✓ bzw50-12b.step
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Made with kicad-footprint-generator 10.0 · KiCad file format 20260206
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docs Publish 0.1.0 · Ray
viewers bzw50-12b: viewers · Ray
bzw50-12b-hero.glb Publish 0.1.0 · Ray
bzw50-12b-hero.overlay.json Publish 0.1.0 · Ray
bzw50-12b.glb Publish 0.1.0 · Ray
bzw50-12b.kicad_mod Publish 0.1.0 · Ray
bzw50-12b.kicad_sym Publish 0.1.0 · Ray
bzw50-12b.lbr Publish 0.1.0 · Ray
bzw50-12b.step Publish 0.1.0 · Ray
package.json Publish 0.1.0 · Ray
page.json Set visibility: public · Ray
README.md Publish 0.1.0 · Ray
verification.json Verified: Published by the parts factory: tier mfr, 2 pins · Ray

BZW50-12B

STMicroelectronics · ESD And Surge Protection (TVS/ESD) · R-6

BZW50-12B from STMicroelectronics, in a R-6. 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 A passive Terminal of the bidirectional 5000 W (10/1000 µs) TVS, VRM 12 V, VBR 13.3 V min at 1 mA; the device is symmetric, so this terminal is interchangeable with the other (datasheet labels the terminals A and K).
2 K passive Terminal of the bidirectional 5000 W (10/1000 µs) TVS, VRM 12 V, VBR 13.3 V min at 1 mA; the device is symmetric, so this terminal is interchangeable with the other (bidirectional parts have red tape on both sides).

Key specifications

Parameter Value
Manufacturer STMicroelectronics
Package R-6
Category Circuit Protection
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
Reverse leakage current IRM 5 µA 25 °C, at VRM = 12 V 3
Breakdown voltage VBR 13.3 V at IBR = 1 mA 3
Clamping voltage, 10/1000 µs VCL 22 V 10/1000 µs waveform 3
Peak pulse current, 10/1000 µs IPP 227 A 10/1000 µs waveform 3
Dynamic resistance, 10/1000 µs RD 0.032 Ω 10/1000 µs waveform 3
Clamping voltage, 8/20 µs VCL 28 V 8/20 µs waveform 3
Peak pulse current, 8/20 µs IPP 2143 A 8/20 µs waveform 3
Dynamic resistance, 8/20 µs RD 0.006 Ω 8/20 µs waveform 3
Voltage temperature coefficient αT 8.4 10-4/°C 3
Peak pulse power dissipation PPP 5000 W 2
Power dissipation on infinite heatsink P 6.5 W on infinite heatsink 2
Storage temperature range Tstg -65 175 °C 2
Operating junction temperature range Top -55 175 °C 2
Maximum lead temperature for soldering TL 260 °C during 10 s at 5 mm from case 2

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 • Lead finishing: matte tin plating Complies with the following standards 1

CAD (KiCad official)

  • Symbol: BZW50-12B
  • Footprint: Diode_THT:D_P600_R-6_P20.00mm_Horizontal
  • 3D model: R-6 (KiCad packages3D, STEP)

Provenance

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

  • Datasheet: STMicroelectronics datasheet (12 pp, sha256 a724c767df9eb77c, retrieved 2026-11-07, tier: manufacturer)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-5-5 (text), consensus claude-sonnet-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