component

1SMB5941B-13

Public Made by Adom

by adom

Diodes Incorporated Zener Diodes, 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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1SMB5941B-13

Diodes Incorporated · Zener Diodes · SMB

1SMB5941B-13 from Diodes Incorporated, in a 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 Diodes Incorporated
Package 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 (VZ) at IZT VZ 44.65 47 49.35 V IZT = 8 mA; pulse test (Note 6) 3
VZ tolerance (standard) -5 5 % Standard VZ tolerance per Features; B suffix decode not printed in the datasheet text 1
Maximum zener impedance at IZT ZZT 67 Ω @ IZT = 8 mA; AC = 0.1 IZ(DC), 60 Hz 3
Maximum zener impedance at IZK ZZK 1000 Ω @ IZK = 0.25 mA; AC = 0.1 IZ(DC), 60 Hz 3
Maximum reverse current IR 1 µA @ VR = 35.8 V 3
Maximum zener current IZM 31 mA Maximum Reverse Current IZM column, per part table 3
Forward voltage VF 1.5 V @ IF = 200 mA 2
Power dissipation at TL = +75°C PD 3 W @ TL = +75°C (Note 5) 2
Derating above +75°C (TL) PD 40 mW/°C Derate above +75°C (Note 5) 2
Power dissipation at TA = +25°C PD 550 mW @ TA = +25°C (Note 5) 2
Derating above +25°C (TA) PD 4.4 mW/°C Derate above +25°C (Note 5) 2
Thermal resistance junction to terminal RθJT 25 °C/W Device mounted on FR-4 PCB (Note 5) 2
Thermal resistance junction to ambient RθJA 226 °C/W Device mounted on FR-4 PCB (Note 5) 2
Operating and storage temperature range TJ, TSTG -65 150 °C 2

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 Copper Alloy tin • Copper Alloy Leadframe with Lead-Free Plating (Matte Tin 1

CAD (KiCad official)

  • Symbol: 1SMB5941B-13
  • Footprint: Diode_SMD:D_SMB
  • 3D model: SMB (KiCad packages3D, STEP)
  • 3D model files: 1smb5941b-13-etched.step / 1smb5941b-13-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); 1smb5941b-13.step / 1smb5941b-13.glb are the bare package body.

Provenance

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

  • Datasheet: Diodes Incorporated datasheet (7 pp, sha256 c06473e556bd519c, retrieved 2026-10-16, 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