component

BUK437-500A-VB

Public Made by Adom

by adom

VBsemi Elec MOSFETs, TO-220AB. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

componenttriode-mos tube-transistorbuk437-500a-vbfactory-2.0.0extractor-text

Verified BUK437-500A-VB

by Ray · last 12 Nov 2026 · 1 record · files match
SymbolFootprint3D modelPins

Verification log 1 record

12 Nov 2026RayPublished by the parts factory: tier lcsc, 3 pinsfiles match
SymbolFootprint3D modelPinsfor all variants
  • ✓component-page-verify: PASS
  • ✓cad_props: Datasheet, MPN and distributor properties match page.json
  • ✓component: BUK437-500A-VB · TO-220AB · 3 pins
  • ✓copper: 3 copper pads, none touching another net
  • ✓datasheet: all 3 pin names found in the 8-page datasheet
  • •distributor (warn): no ['digikey', 'mouser'] number
  • ✓family: TO-220-3_Vertical
  • ✓files: 7 declared files present
  • ✓hero: docs/hero.png 4000x2500
  • ✓lbr: OK: /tmp/cpv-2ojjbiy4/x.lbr is a valid EAGLE .lbr with complete deviceset
  • ✓license: CC-BY-SA-4.0
  • ✓models_3d: 2 records
  • ✓package_fit: thickness within the datasheet's package drawing (vertical TO package); standing height not judged: the drawing read gives no overall height (H, H1 or L) (datasheet p.7)
  • ✓pads: 3 pins = 3 pads
  • ✓pose: 2 STEP(s) Z-up, seated, centred
  • ✓symbol: 3 pins agree
  • ✓symbol_text: no pin names collide
  • ✓viewers: viewers/footprint.html 16 kB, viewers/symbol.html 8 kB
  • ✓visibility: public, source open
Evidencedatasheet
Verified files✓ buk437-500a-vb.kicad_sym✓ buk437-500a-vb.kicad_mod✓ buk437-500a-vb.step
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Made with kicad-footprint-generator 10.0 · KiCad file format 20260206
Name Last commit message Last updated
docs Publish 0.1.0 · Ray 3h ago
viewers buk437-500a-vb: viewers rendered from the public page · Ray 3h ago
buk437-500a-vb-etched.glb Publish 0.1.0 · Ray 3h ago
buk437-500a-vb-etched.step buk437-500a-vb: factory component page (tier=lcsc) · Ray 3h ago
buk437-500a-vb-hero.glb buk437-500a-vb: hero GLB from the etched model (keeps the MPN mark) · Ray 3h ago
buk437-500a-vb-hero.overlay.json buk437-500a-vb: hero GLB from the etched model (keeps the MPN mark) · Ray 3h ago
buk437-500a-vb.glb Publish 0.1.0 · Ray 3h ago
buk437-500a-vb.kicad_mod Publish 0.1.0 · Ray 3h ago
buk437-500a-vb.kicad_sym Publish 0.1.0 · Ray 3h ago
buk437-500a-vb.lbr Publish 0.1.0 · Ray 3h ago
buk437-500a-vb.step Publish 0.1.0 · Ray 3h ago
package.json Publish 0.1.0 · Ray 3h ago
page.json Set visibility: public · Ray 3h ago
README.md Publish 0.1.0 · Ray 3h ago
verification.json Verified: Published by the parts factory: tier lcsc, 3 pins · Ray 3h ago

BUK437-500A-VB

VBsemi Elec · MOSFETs · TO-220AB

BUK437-500A-VB from VBsemi Elec, in a TO-220AB. 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 G input Gate terminal of the N-channel MOSFET; gate-source voltage is rated at ±30 V maximum, with threshold of 2 to 4 V at VDS = VGS, ID = 250 μA.
2 D passive Drain terminal (also connected to the tab); drain-source voltage rated at 650 V maximum at TJ max, with junction-to-case (drain) thermal resistance of 0.6 °C/W max.
3 S passive Source terminal of the N-channel MOSFET; body diode forward voltage is 1.5 V max at IS = 4 A, VGS = 0 V.

Key specifications

Parameter Value
Manufacturer VBsemi Elec
Package TO-220AB
Category Triode/MOS Tube/Transistor
Pins 3

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Gate-Source Threshold Voltage VGS(th) 2 4 V VDS = VGS, ID = 250 μA 2
Gate-Source Leakage IGSS 100 nA VGS = ± 20 V 2
Gate-Source Leakage IGSS 1 μA VGS = ± 30 V 2
Zero Gate Voltage Drain Current IDSS 1 μA VDS = 600 V, VGS = 0 V 2
Zero Gate Voltage Drain Current IDSS 10 μA VDS = 520 V, VGS = 0 V, TJ = 125 °C 2
Diode Forward Voltage VSD 1.5 V TJ = 25 °C, IS = 4 A, VGS = 0 V 2
Maximum Junction-to-Ambient RthJA 63 °C/W 2
Maximum Junction-to-Case (Drain) RthJC 0.6 °C/W 2
Drain-Source Voltage VDS 650 V TC = 25 °C 1
Gate-Source Voltage VGS -30 30 V TC = 25 °C 1
Operating Junction and Storage Temperature Range TJ, Tstg -55 150 °C 1
Soldering Recommendations (Peak Temperature) 300 °C for 10 s, 1.6 mm from case 1
VDS Temperature Coefficient ΔVDS/TJ 0.65 V/°C Reference to 25 °C, ID = 1 mA 2
Gate Input Resistance Rg 3.5 Ω f = 1 MHz, open drain 2
Reverse Recovery Time trr 190 ns TJ = 25 °C, IF = IS = 4 A, dI/dt = 100 A/μs, VR = 400 V 2
Reverse Recovery Charge Qrr 2.3 μC TJ = 25 °C, IF = IS = 4 A, dI/dt = 100 A/μs, VR = 400 V 2

CAD (KiCad official)

  • Symbol: BUK437-500A-VB
  • Footprint: Package_TO_SOT_THT:TO-220-3_Vertical
  • 3D model: TO-220AB (KiCad packages3D, STEP)
  • 3D model files: buk437-500a-vb-etched.step / buk437-500a-vb-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); buk437-500a-vb.step / buk437-500a-vb.glb are the bare package body.

Provenance

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

  • Datasheet: VBsemi Elec datasheet (8 pp, sha256 2dd0232b45ecd82f, retrieved 2026-11-12, tier: lcsc)
  • 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