component
1N4148WS-E
Public Made by Adomby adom
MDD Microdiode Semiconductor Switching Diodes, SOD-323. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdown1N4148WS-E
MDD Microdiode Semiconductor · Switching Diodes · SOD-323
1N4148WS-E from MDD Microdiode Semiconductor, in a SOD-323. 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 | CATHODE | passive | Cathode terminal, marked by the cathode bar on the SOD-323 case; the diode is rated for a maximum repetitive peak reverse voltage of 100 V. |
| 2 | A | passive | Anode terminal; the device is rated for 0.15 A forward continuous current. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | MDD Microdiode Semiconductor |
| Package | SOD-323 |
| 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 |
|---|---|---|---|---|---|---|---|
| Maximum repetitive peak reverse voltage | VRRM | 100 | V | 1 | |||
| Maximum RMS voltage | VRMS | 75 | V | 1 | |||
| Forward continuous current | IFM | 300 | mA | 1 | |||
| Average rectified output current | IO | 150 | mA | 1 | |||
| Peak forward current | IFSM | 0.5 | A | at 1s | 1 | ||
| Peak forward current | IFSM | 1 | A | at 1ms | 1 | ||
| Peak forward current | IFSM | 4 | A | at 1us | 1 | ||
| Power dissipation | Pd | 400 | mW | 1 | |||
| Thermal resistance junction to ambient | RΘJA | 250 | °C/W | 1 | |||
| Junction temperature | Tj | -55 | 125 | °C | 1 | ||
| Storage temperature | TSTG | -55 | 150 | °C | 1 | ||
| Forward voltage | VF1 | 0.715 | V | IF=1.0mA | 1 | ||
| Forward voltage | VF2 | 0.855 | V | IF=10mA | 1 | ||
| Forward voltage | VF3 | 1 | V | IF=50mA | 1 | ||
| Forward voltage | VF4 | 1.25 | V | IF=150mA | 1 | ||
| Reverse current | IR1 | 0.025 | uA | VR=20V, Tj=25°C | 1 | ||
| Reverse current | IR2 | 1 | uA | VR=75V, Tj=25°C | 1 | ||
| Reverse current | IR3 | 30 | uA | VR=25V, Tj=150°C | 1 | ||
| Reverse current | IR4 | 50 | uA | VR=75V, Tj=150°C | 1 | ||
| Capacitance between terminals | CT | 2 | pF | VR=0V, f=1.0MHz | 1 | ||
| Reverse recovery time | trr | 4 | ns | IF=IR=10mA, Irr=0.1XIR, RL=100 | 1 |
CAD (KiCad official)
- Symbol:
1N4148WS-E - Footprint:
Diode_SMD:D_SOD-323 - 3D model: SOD-323 (KiCad packages3D, STEP)
- 3D model files:
1n4148ws-e-etched.step/1n4148ws-e-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);1n4148ws-e.step/1n4148ws-e.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: MDD Microdiode Semiconductor datasheet (3 pp, sha256
0e7a780941daf716, retrieved 2026-10-22, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusclaude-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).