component
SMDJ440CA
Public Made by Adomby adom
YFW ESD And Surge Protection (TVS/ESD), DO-214AB(SMC). 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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Contents
README
markdownSMDJ440CA
YFW · ESD And Surge Protection (TVS/ESD) · DO-214AB(SMC)
SMDJ440CA from YFW, in a DO-214AB(SMC). 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 | Terminal 1 (cathode on unipolar devices); SMDJ440CA is bidirectional with 440V stand-off, 492-543V breakdown at 1mA, and 713V max clamp at 4.21A. |
| 2 | Anode | passive | Terminal 2 (anode on unipolar devices); SMDJ440CA is bidirectional with 440V stand-off, 492-543V breakdown at 1mA, and 713V max clamp at 4.21A. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | YFW |
| Package | DO-214AB(SMC) |
| Category | Circuit Protection |
| 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 Stand-off Voltage | VRWM | 440 | V | 3 | |||
| Breakdown Voltage | VBR | 492 | 543 | V | @ IT = 1 mA | 3 | |
| Test Current | IT | 1 | mA | 3 | |||
| Max Clamp Voltage | VC | 713 | V | @ IPP = 4.21 A | 3 | ||
| Max Peak Pulse Current | IPP | 4.21 | A | 3 | |||
| Max Reverse Leakage | IR | 5 | uA | @ VR | 3 | ||
| Breakdown voltage tolerance (A suffix) | -5 | 5 | % | Suffix A denotes 5% tolerance | 3 | ||
| Peak Pulse Power Dissipation | PPPM | 3000 | W | Ta=25°C, 10x1000 us waveform | 1 | ||
| Power Dissipation on infinite heat sink | PM(AV) | 6.5 | W | TA=50°C | 1 | ||
| Peak Forward Surge Current | IFSM | 300 | A | 8.3ms single half sine wave, unidirectional only | 1 | ||
| Maximum Instantaneous Forward Voltage | VF | 3.5 | V | at 100A, unidirectional only | 1 | ||
| Thermal Resistance Junction to Lead | RθJL | 15 | °C/W | Typical | 1 | ||
| Thermal Resistance Junction to Ambient | RθJA | 75 | °C/W | Typical | 1 | ||
| Operating Junction and Storage Temperature Range | TJ,TSTG | -65 | 150 | °C | 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 |
|---|---|---|---|---|
| contacts | tin | Matte Tin Lead-free Plated MECHANICAL DATA | 1 |
CAD (KiCad official)
- Symbol:
SMDJ440CA - Footprint:
Diode_SMD:D_SMC - 3D model: DO-214AB(SMC) (KiCad packages3D, STEP)
- 3D model files:
smdj440ca-etched.step/smdj440ca-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);smdj440ca.step/smdj440ca.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: YFW datasheet (5 pp, sha256
9d3c6bedf7c2a1f2, retrieved 2026-10-24, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-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).