component
P4SMA400A
Public Made by Adomby adom
Littelfuse TVS, DO-214AC. 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
markdownP4SMA400A
Littelfuse · TVS · DO-214AC
P4SMA400A from Littelfuse, in a 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 of the unidirectional TVS, marked by the color band and the positive end; the part has VR 342 V, VBR 380 V min to 420 V max at 1 mA, and VC 548 V at 1.1 A. |
| 2 | A | passive | Anode of the unidirectional TVS, the end opposite the cathode band; peak pulse power is rated at 600 W (10/1000µs) for this stacked-die part. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Littelfuse |
| Package | DO-214AC |
| 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 |
|---|---|---|---|---|---|---|---|
| Breakdown Voltage | VBR | 380 | 420 | V | @ IT = 1 mA | 2 | |
| Reverse Stand-off Voltage | VR | 342 | V | 2 | |||
| Maximum Clamping Voltage | VC | 548 | V | @ Ipp = 1.1 A | 2 | ||
| Maximum Peak Pulse Current | Ipp | 1.1 | A | 2 | |||
| Maximum Reverse Leakage | IR | 1 | µA | @ VR | 2 | ||
| Maximum Temperature Coefficient of VBR | αT | 0.112 | %/C | 2 | |||
| Maximum Instantaneous Forward Voltage | VF | 5 | V | at 25A, unidirectional only; stacked-die parts | 1 | ||
| Peak Pulse Power Dissipation (stacked die) | PPPM | 600 | W | TA=25°C, 10/1000us waveform, stacked die parts | 1 | ||
| Power Dissipation on Infinite Heat Sink | PD | 3.3 | W | TL=50°C | 1 | ||
| Peak Forward Surge Current | IFSM | 60 | A | 8.3ms single half sine wave, unidirectional only | 1 | ||
| Operating Temperature Range | TJ | -65 | 150 | °C | 1 | ||
| Storage Temperature Range | TSTG | -65 | 175 | °C | 1 | ||
| Typical Thermal Resistance Junction to Lead | RθJL | 30 | °C/W | 1 | |||
| Typical Thermal Resistance Junction to Ambient | RθJA | 120 | °C/W | 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 • Halogen-free and RoHS | 1 |
CAD (KiCad official)
- Symbol:
P4SMA400A - Footprint:
Diode_SMD:D_SMA - 3D model: DO-214AC (KiCad packages3D, STEP)
- 3D model files:
p4sma400a-etched.step/p4sma400a-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);p4sma400a.step/p4sma400a.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Littelfuse datasheet (6 pp, sha256
52be5822237f1b93, retrieved 2026-10-22, 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).