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1SMA4751 R3G

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Taiwan Semiconductor(Taiwan Semicon) Zener Diodes, SMA(DO-214AC). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

componentdiodes1sma4751 r3gfactory-2.0.0extractor-text

Verified 1SMA4751 R3G

by Ray · last 31 Oct 2026 · 1 record · files match
SymbolFootprint3D modelPins

Verification log 1 record

31 Oct 2026RayPublished by the parts factory: tier lcsc, 2 pinsfiles match
SymbolFootprint3D modelPinsfor all variants
  • ✓component-page-verify: PASS
  • ✓cad_props: Datasheet, MPN and distributor properties match page.json
  • ✓component: 1SMA4751 R3G · SMA(DO-214AC) · 2 pins
  • ✓copper: 2 copper pads, none touching another net
  • ✓datasheet: all 2 pin names found in the 6-page datasheet
  • ✓distributor: lcsc C485034, digikey 1SMA4751R3GTR-ND, mouser 821-1SMA4751R3G
  • ✓family: D_SMA
  • ✓files: 7 declared files present
  • ✓hero: docs/hero.png 4000x2500
  • ✓lbr: OK: /tmp/cpv-mmwx819j/x.lbr is a valid EAGLE .lbr with complete deviceset
  • ✓license: CC-BY-SA-4.0
  • ✓models_3d: 2 records
  • ✓package_fit: height and body within the datasheet's package drawing (datasheet p.5)
  • ✓pads: 2 pins = 2 pads
  • ✓pose: 2 STEP(s) Z-up, seated, centred
  • ✓symbol: 2 pins agree
  • ✓visibility: public, source open
Evidencedatasheet
Verified files✓ 1sma4751-r3g.kicad_sym✓ 1sma4751-r3g.kicad_mod✓ 1sma4751-r3g.step
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Made with KiCad 10.0 · needs KiCad 10.0 or later to open · KiCad file format 20260206
Name Last commit message Last updated
docs Publish 0.1.0 · Ray 4h ago
viewers 1sma4751-r3g: viewers · Ray 4h ago
1sma4751-r3g-etched.glb Publish 0.1.0 · Ray 4h ago
1sma4751-r3g-etched.step 1sma4751-r3g: factory component page (tier=lcsc) · Ray 4h ago
1sma4751-r3g-hero.glb 1sma4751-r3g: hero GLB from the etched model (keeps the MPN mark) · Ray 4h ago
1sma4751-r3g-hero.overlay.json Publish 0.1.0 · Ray 4h ago
1sma4751-r3g.glb Publish 0.1.0 · Ray 4h ago
1sma4751-r3g.kicad_mod Publish 0.1.0 · Ray 4h ago
1sma4751-r3g.kicad_sym Publish 0.1.0 · Ray 4h ago
1sma4751-r3g.lbr Publish 0.1.0 · Ray 4h ago
1sma4751-r3g.step Publish 0.1.0 · Ray 4h ago
package.json Publish 0.1.0 · Ray 4h ago
page.json Set visibility: public · Ray 4h ago
README.md Publish 0.1.0 · Ray 4h ago
verification.json Verified: Published by the parts factory: tier lcsc, 2 pins · Ray 4h ago

1SMA4751 R3G

Taiwan Semiconductor(Taiwan Semicon) · Zener Diodes · SMA(DO-214AC)

1SMA4751 R3G from Taiwan Semiconductor(Taiwan Semicon), in a SMA(DO-214AC). 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 K passive Cathode, marked by the cathode band; for the 1SMA4751 (marking 751A) it is the zener voltage node with nominal Vz of 30 V at IZT of 8.5 mA, ZZT of 40 Ω and IR of 1 µA at VR of 22.8 V.
2 A passive Anode, the terminal opposite the cathode band; it is the reference side of the 30 V nominal zener (1SMA4751) with a 1 W rated device.

Key specifications

Parameter Value
Manufacturer Taiwan Semiconductor(Taiwan Semicon)
Package SMA(DO-214AC)
Category Diodes
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
Zener voltage tolerance Vz -5 5 % standard tolerance on nominal zener voltage 2
Nominal zener voltage Vz 30 V @ IZT 2
Zener test current IZT 8.5 mA 2
Zener impedance ZZT 40 Ω @ IZT 2
Zener impedance (knee) ZZK 1000 Ω @ IZK = 0.25 mA 2
Leakage current IR 1 μA @ VR = 22.8 V 2
Surge current (non-repetitive) IR 150 mA 1/2 square wave, 1/120 s, superimposed on IZT 2
Operating junction temperature range TJ -55 175 °C 1
Storage temperature range TSTG -55 175 °C 1

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 Terminal: Matte tin plated leads, solderable per JESD22-B102 Meet JESD 201 class 2 whisker test 1

CAD (KiCad official)

  • Symbol: 1SMA4751 R3G
  • Footprint: Diode_SMD:D_SMA
  • 3D model: SMA(DO-214AC) (KiCad packages3D, STEP)
  • 3D model files: 1sma4751-r3g-etched.step / 1sma4751-r3g-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); 1sma4751-r3g.step / 1sma4751-r3g.glb are the bare package body.

Provenance

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

  • Datasheet: Taiwan Semiconductor(Taiwan Semicon) datasheet (6 pp, sha256 4542bca42e99dada, retrieved 2026-10-31, 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