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1SMA4757

Public Made by Adom

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

componentdiodes1sma4757factory-2.0.0extractor-text

Verified 1SMA4757

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: 1SMA4757 · SMA(DO-214AC) · 2 pins
  • ✓copper: 2 copper pads, none touching another net
  • ✓datasheet: all 2 pin names found in the 8-page datasheet
  • •distributor (warn): no ['digikey'] number
  • ✓family: D_SMA
  • ✓files: 7 declared files present
  • ✓hero: docs/hero.png 4000x2500
  • ✓lbr: OK: /tmp/cpv-63pplm8h/x.lbr is a valid EAGLE .lbr with complete deviceset
  • ✓license: CC-BY-SA-4.0
  • ✓models_3d: 2 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: 2 STEP(s) Z-up, seated, centred
  • ✓symbol: 2 pins agree
  • ✓visibility: public, source open
Evidencedatasheet
Verified files✓ 1sma4757.kicad_sym✓ 1sma4757.kicad_mod✓ 1sma4757.step
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Ray Publish 0.1.0 b919820 14h ago

1SMA4757

PANJIT International · Zener Diodes · SMA(DO-214AC)

1SMA4757 from PANJIT International, 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 of the zener diode, marked by the color band; 51 V nominal zener voltage (48.45 to 53.55 V) at IZT = 5 mA.
2 A passive Anode of the zener diode; 1 W maximum power dissipation device.

Key specifications

Parameter Value
Manufacturer PANJIT International
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 (nominal) Vz 48.45 51 53.55 V @ IZT = 5 mA 2
Maximum Zener Impedance ZZT 95 Ω @ IZT = 5 mA 2
Maximum Zener Knee Impedance ZZK 1500 Ω @ IZK = 0.25 mA 2
Maximum Reverse Leakage Current IR 0.1 uA @ VR = 38.8 V 2
Test Current IZT 5 mA Zener test current 2
Power Dissipation PD 1 W TA=50°C (Note A) 1
Peak Forward Surge Current IFSM 10 A 8.3ms single half sine-wave superimposed on rated load 1
Zener Voltage Tolerance -5 5 % Standard tolerance on nominal zener voltage (Note C) 1

CAD (KiCad official)

  • Symbol: 1SMA4757
  • Footprint: Diode_SMD:D_SMA
  • 3D model: SMA(DO-214AC) (KiCad packages3D, STEP)
  • 3D model files: 1sma4757-etched.step / 1sma4757-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); 1sma4757.step / 1sma4757.glb are the bare package body.

Provenance

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

  • Datasheet: PANJIT International datasheet (8 pp, sha256 ed1f3651f209aadc, 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