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1SMA5931_R1_00001

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

1SMA5931_R1_00001 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, the end marked by the color band; the zener (1SMA5931, 18V nominal, 17.1 to 18.9V at 20.8mA) is reverse biased with this pin positive.
2 A passive Anode, the end opposite the color band; zener diode terminal that is negative in normal reverse-bias regulation.

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
Nominal Zener Voltage Vz 17.1 18 18.9 V @ IZT = 20.8 mA 2
Maximum Zener Impedance ZZT 12 Ω @ IZT = 20.8 mA 2
Maximum Zener Impedance (knee) ZZK 650 Ω @ IZK = 0.25 mA 2
Max. Reverse Leakage Current IR 1 µA @ VR = 13.7 V 2
Zener Test Current IZT 20.8 mA 2
Pulse Power Dissipation PD 1.5 W TL=75°C (Note A) 1
Power Derating above 75°C PD 20 mW/°C Derate above 75°C 1
Peak Forward Surge Current IFSM 10 A 8.3ms single half sine-wave superimposed on rated load (Note B) 1
Operating Junction and Storage Temperature Range TJ,TSTG -55 150 °C 1

CAD (KiCad official)

  • Symbol: 1SMA5931_R1_00001
  • Footprint: Diode_SMD:D_SMA
  • 3D model: SMA(DO-214AC) (KiCad packages3D, STEP)
  • 3D model files: 1sma5931-r1-00001-etched.step / 1sma5931-r1-00001-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); 1sma5931-r1-00001.step / 1sma5931-r1-00001.glb are the bare package body.

Provenance

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

  • Datasheet: PANJIT International datasheet (7 pp, sha256 d1672650484ea67e, 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