P4SMFJ24CA

Leiditech · ESD And Surge Protection (TVS/ESD) · SOD-123

P4SMFJ24CA from Leiditech, 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	A1	passive	Bidirectional TVS terminal 1 (P4SMFJ24CA, C suffix); interchangeable with the other terminal, VRWM 20 V, 400 W peak pulse power at 10x1000us.
2	A2	passive	Bidirectional TVS terminal 2 (P4SMFJ24CA, C suffix); interchangeable with the other terminal, VRWM 20 V, 400 W peak pulse power at 10x1000us.

Key specifications

Parameter	Value
Manufacturer	Leiditech
Package	SOD-123
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 (A-suffix, 5% tolerance)	VBR	26.7		29.5	V	@IT 1 mA	3
Maximum reverse leakage current	IR			1	μA	@VRWM 24.0 V	3
Working peak reverse voltage	VRWM			24	V		3
Maximum reverse surge current	IPP			10.3	A		3
Maximum clamping voltage	VC			38.9	V	@IPP 10.3 A	3
Peak pulse power dissipation	PPPM			400	W	TA=25℃ by 10x1000μs waveform (Fig.2)(Note 1)(Note 2)	2
Power dissipation on infinite heat sink	PD			6.5	W	TA=50℃	2
Operating junction and storage temperature range	TJ, TSTG	-55		150	℃		2
Typical thermal resistance junction to lead	RuJL		15		℃/W		2
Typical thermal resistance junction to ambient	RuJA		75		℃/W		2

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	copper		2. Mounted on copper pad area of 0.31x0.31” (8.0 x 8.0mm) to each terminal.	2

CAD (KiCad official)

Symbol: P4SMFJ24CA
Footprint: Diode_SMD:D_SOD-123F
3D model: SOD-123 (KiCad packages3D, STEP)
3D model files: p4smfj24ca-etched.step / p4smfj24ca-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); p4smfj24ca.step / p4smfj24ca.glb are the bare package body.

Provenance

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

Datasheet: Leiditech datasheet (7 pp, sha256 98b38201d8abe651, retrieved 2026-10-17, 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

# P4SMFJ24CA

**Leiditech** · ESD And Surge Protection (TVS/ESD) · SOD-123

P4SMFJ24CA from Leiditech, 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 | A1 | passive | Bidirectional TVS terminal 1 (P4SMFJ24CA, C suffix); interchangeable with the other terminal, VRWM 20 V, 400 W peak pulse power at 10x1000us. |
| 2 | A2 | passive | Bidirectional TVS terminal 2 (P4SMFJ24CA, C suffix); interchangeable with the other terminal, VRWM 20 V, 400 W peak pulse power at 10x1000us. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Leiditech |
| Package | SOD-123 |
| 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 (A-suffix, 5% tolerance) | VBR | 26.7 |  | 29.5 | V | @IT 1 mA | 3 |
| Maximum reverse leakage current | IR |  |  | 1 | μA | @VRWM 24.0 V | 3 |
| Working peak reverse voltage | VRWM |  |  | 24 | V |  | 3 |
| Maximum reverse surge current | IPP |  |  | 10.3 | A |  | 3 |
| Maximum clamping voltage | VC |  |  | 38.9 | V | @IPP 10.3 A | 3 |
| Peak pulse power dissipation | PPPM |  |  | 400 | W | TA=25℃ by 10x1000μs waveform (Fig.2)(Note 1)(Note 2) | 2 |
| Power dissipation on infinite heat sink | PD |  |  | 6.5 | W | TA=50℃ | 2 |
| Operating junction and storage temperature range | TJ, TSTG | -55 |  | 150 | ℃ |  | 2 |
| Typical thermal resistance junction to lead | RuJL |  | 15 |  | ℃/W |  | 2 |
| Typical thermal resistance junction to ambient | RuJA |  | 75 |  | ℃/W |  | 2 |

## 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 | copper |  | 2. Mounted on copper pad area of 0.31x0.31” (8.0 x 8.0mm) to each terminal. | 2 |

## CAD (KiCad official)

- Symbol: `P4SMFJ24CA`
- Footprint: `Diode_SMD:D_SOD-123F`
- 3D model: SOD-123 (KiCad packages3D, STEP)
- 3D model files: `p4smfj24ca-etched.step` / `p4smfj24ca-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `p4smfj24ca.step` / `p4smfj24ca.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Leiditech datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8589839006083932160) (7 pp, sha256 `98b38201d8abe651`, retrieved 2026-10-17, 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](docs/p4smfj24ca-datasheet.pdf)