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SMB3Z47AQ

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Yangzhou Yangjie Elec Tech Zener Diodes, SMB(DO-214AA). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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SMB3Z47AQ

Yangzhou Yangjie Elec Tech · Zener Diodes · SMB(DO-214AA)

SMB3Z47AQ from Yangzhou Yangjie Elec Tech, 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 end marked by the cathode line; Zener voltage 47 V typ. (44.65 V to 49.35 V) at IZT = 16 mA, with 3.0 W maximum DC power dissipation at TL = 75 °C.
2 A passive Anode, the end opposite the cathode line; maximum instantaneous forward voltage 1.5 V at IF = 200 mA.

Key specifications

Parameter Value
Manufacturer Yangzhou Yangjie Elec Tech
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 VZ 44.65 47 49.35 V at IZT 2
Test current IZT 16 mA 2
Maximum dynamic impedance ZZT 38 Ω at IZT 2
Maximum dynamic impedance (knee) ZZK 1500 Ω at IZK = 0.25 mA 2
Knee test current IZK 0.25 mA 2
Maximum reverse leakage current IR 0.5 μA at VR = 35.6 V 2
Reverse test voltage VR 35.6 V 2
Maximum DC Zener current IZM 57 mA 2
DC power dissipation PD 3 W TL = 75 °C 1
Maximum instantaneous forward voltage VF 1.5 V IF=200mA 1
Junction temperature TJ -55 150 ℃ 1
Storage temperature range Tstg -55 150 ℃ 1
Thermal resistance junction to lead RθJ-L 25 ℃/W junction to lead, mounted on PCB with 10 mm x 10 mm copper pad 1
Thermal resistance junction to ambient RθJ-A 100 ℃/W junction to ambient, mounted on PCB with 10 mm x 10 mm copper pad 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
housing black 4. Body color: Black 4
contacts tin ● Terminals: Tin plated leads, solderable per J-STD-002 and JESD22-B102 1

CAD (KiCad official)

  • Symbol: SMB3Z47AQ
  • Footprint: Diode_SMD:D_SMB
  • 3D model: SMB(DO-214AA) (KiCad packages3D, STEP)
  • 3D model files: smb3z47aq-etched.step / smb3z47aq-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); smb3z47aq.step / smb3z47aq.glb are the bare package body.

Provenance

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

  • Datasheet: Yangzhou Yangjie Elec Tech datasheet (5 pp, sha256 563098a9f616c73d, retrieved 2026-10-22, 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