component

SMBJ5349B

Public Made by Adom

by adom

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

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Made with KiCad 10.0 · needs KiCad 10.0 or later to open · KiCad file format 20260206
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smbj5349b-etched.step smbj5349b: factory component page (tier=lcsc) · Ray 4h ago
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SMBJ5349B

hongjiacheng · Zener Diodes · DO-214AA(SMB)

SMBJ5349B from hongjiacheng, in a DO-214AA(SMB). 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 hongjiacheng
Package DO-214AA(SMB)
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 (standard, B suffix) VZ -5 5 % Standard tolerance on nominal zener voltage (Note 1) 3
Maximum Zener Impedance ZZT 2.5 Ω @ IZT = 100 mA 2
Maximum Zener Impedance ZZK 125 Ω @ IZK = 1.0 mA 2
Maximum Reverse Leakage Current IR 2 μA @ VR = 9.1 V 2
Maximum DC Zener Current IZM 395 mA 2
Maximum Surge Current IZSM 7.5 A 2
Maximum Voltage Regulation 0.25 V 2
Power Dissipation PD 5000 mW at Tc = 75℃ 1
Forward Voltage VF 1.2 V @ IF = 200mA 1
Storage Temperature Tstg -55 150 ℃ 1
Junction Temperature Tj -55 150 ℃ 1
Typical Thermal Resistance, junction to ambient RθJ-A 90 ℃/W 1

CAD (KiCad official)

  • Symbol: SMBJ5349B
  • Footprint: Diode_SMD:D_SMB
  • 3D model: DO-214AA(SMB) (KiCad packages3D, STEP)
  • 3D model files: smbj5349b-etched.step / smbj5349b-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); smbj5349b.step / smbj5349b.glb are the bare package body.

Provenance

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

  • Datasheet: hongjiacheng datasheet (5 pp, sha256 df230341ef316f7b, retrieved 2026-10-21, 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