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1SMB5951B

Public Made by Adom

by adom

EIC Semicon Zener Diodes, SMB(DO-214AA). Unpolarised two-terminal part: the datasheet prints no pin numbers, so pins 1 and 2 follow the library convention, KiCad symbol/footprint/3D.

componentdiodes1smb5951bfactory-2.0.0extractor-text

Verified 1SMB5951B

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: 1SMB5951B · SMB(DO-214AA) · 2 pins
  • ✓copper: 2 copper pads, none touching another net
  • ✓datasheet: all 2 pin names found in the 3-page datasheet
  • •distributor (warn): no ['mouser'] number
  • ✓family: D_SMB
  • ✓files: 7 declared files present
  • ✓hero: docs/hero.png 4000x2500
  • ✓lbr: OK: /tmp/cpv-dseu6g0x/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.1)
  • ✓pads: 2 pins = 2 pads
  • ✓pose: 2 STEP(s) Z-up, seated, centred
  • ✓symbol: 2 pins agree
  • ✓visibility: public, source open
Evidencedatasheet
Verified files✓ 1smb5951b.kicad_sym✓ 1smb5951b.kicad_mod✓ 1smb5951b.step
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3D Model

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Symbol & Footprint

Schematic Symbol

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PCB Footprint

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Datasheet

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Contents

README

markdown

1SMB5951B

EIC Semicon · Zener Diodes · SMB(DO-214AA)

1SMB5951B from EIC Semicon, in a SMB(DO-214AA). 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: the banded/marked end per the datasheet; pad 1 of the KiCad diode footprint.
2 A passive Anode.

Key specifications

Parameter Value
Manufacturer EIC Semicon
Package SMB(DO-214AA)
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 % Suffix B indicates ±5% tolerance 2
Maximum zener impedance ZZT 380 Ω @ IZT = 3.1 mA 2
Maximum zener impedance ZZK 4500 Ω @ IZK = 0.25 mA 2
Maximum reverse leakage current IR 1 μA @ VR = 91.2 V 2
Maximum DC zener current IZM 12 mA 2
Maximum forward voltage VF 1.5 V @ IF = 200 mA 1
Maximum steady state power dissipation PD 3 W TL = 75 °C, measured at zero lead length 1
Maximum steady state power dissipation PD 550 mW Ta = 25 °C, measured at zero lead length 1
Junction temperature range TJ -65 150 °C 1
Storage temperature range Tstg -65 150 °C 1
Nominal zener voltage VZ 120 V @ IZT = 3.1 mA 2
Thermal resistance, junction to lead RθJL 25 °C/W Junction to lead 1
Thermal resistance, junction to ambient RθJA 226 °C/W Junction to ambient 1

CAD (KiCad official)

  • Symbol: 1SMB5951B
  • Footprint: Diode_SMD:D_SMB
  • 3D model: SMB(DO-214AA) (KiCad packages3D, STEP)
  • 3D model files: 1smb5951b-etched.step / 1smb5951b-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); 1smb5951b.step / 1smb5951b.glb are the bare package body.

Provenance

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

  • Datasheet: EIC Semicon datasheet (3 pp, sha256 a92bcce9354ab090, retrieved 2026-10-31, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins, primary cathode-band 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