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1N4148W-MS

Public Made by Adom

by adom

MSKSEMI Switching Diodes, SOD-123. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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1N4148W-MS

MSKSEMI · Switching Diodes · SOD-123

1N4148W-MS from MSKSEMI, in a SOD-123. 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 marked-band end of the SOD-123 body; the diode blocks up to VR = 75 V (VRM = 100 V peak) when this pin is positive relative to the anode.
2 A passive Anode; forward current up to IF(AV) = 150 mA average flows into this pin, with VF of 1 V max at 50 mA and 1.25 V max at 150 mA.

Key specifications

Parameter Value
Manufacturer MSKSEMI
Package SOD-123
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
Reverse Breakdown Voltage V(BR)R 75 V at IR = 1 µA 3
Forward Voltage VF 0.715 V at IF = 1 mA 3
Forward Voltage VF 0.855 V at IF = 10 mA 3
Forward Voltage VF 1 V at IF = 50 mA 3
Forward Voltage VF 1.25 V at IF = 150 mA 3
Peak Reverse Current IR 1 µA at VR = 75 V 3
Peak Reverse Current IR 25 nA at VR = 20 V 3
Peak Reverse Current IR 50 µA at VR = 75 V, TJ = 150 °C 3
Peak Reverse Current IR 30 µA at VR = 25 V, TJ = 150 °C 3
Total Capacitance CT 2 pF at VR = 0 V, f = 1 MHz 3
Reverse Recovery Time trr 4 ns at Irr = 0.1 X IR, IF = IR = 10 mA, RL = 100 Ω 3
Peak Reverse Voltage VRM 100 V 2
Reverse Voltage VR 75 V 2
Average Rectified Forward Current IF(AV) 150 mA 2
Non-repetitive Peak Forward Surge Current IFSM 2 A at t = 1 µs 2
Power Dissipation Ptot 400 mW 2
Junction Temperature Tj 150 °C 2
Storage Temperature Range Tstg -65 150 °C 2
Thermal Resistance from Junction to Ambient Air RθJA 312 °C/W 2

CAD (KiCad official)

  • Symbol: 1N4148W-MS
  • Footprint: Diode_SMD:D_SOD-123F
  • 3D model: SOD-123 (KiCad packages3D, STEP)
  • 3D model files: 1n4148w-ms-etched.step / 1n4148w-ms-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); 1n4148w-ms.step / 1n4148w-ms.glb are the bare package body.

Provenance

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

  • Datasheet: MSKSEMI datasheet (6 pp, sha256 ffa3cfe5dacce15b, retrieved 2026-10-19, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-5-5 (text+vision), consensus claude-opus-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