# SMAJ7.5CA-13-F

**Diodes Incorporated** · ESD And Surge Protection (TVS/ESD) · SMA

SMAJ7.5CA-13-F from Diodes Incorporated, in a SMA. 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 | Terminal 1 | passive | Bidirectional TVS terminal with no polarity indicator, interchangeable with the other terminal, VRWM 7.5V and max clamping voltage 12.9V at 31.0A peak pulse current. |
| 2 | Terminal 2 | passive | Bidirectional TVS terminal with no polarity indicator, interchangeable with the other terminal, VRWM 7.5V and max clamping voltage 12.9V at 31.0A peak pulse current. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Diodes Incorporated |
| Package | SMA |
| 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 |
|---|---|---|---|---|---|---|---|
| Peak Pulse Power Dissipation (non-repetitive current pulse, derated above TA = +25°C, Note 5) | PPK |  |  | 400 | W | Non-repetitive current pulse, derated above TA = +25°C | 2 |
| Peak Forward Surge Current, 8.3ms single half sine wave | IFSM |  |  | 40 | A | 8.3ms single half sine wave superimposed on rated load (Notes 5, 6, 7) | 2 |
| Steady State Power Dissipation | PM(AV) |  |  | 1 | W | @ TL = +75°C | 2 |
| Instantaneous Forward Voltage | VF |  |  | 3.5 | V | @ IPP = 35A (Notes 5, 6, 7) | 2 |
| Operating Temperature Range | TJ | -55 |  | 150 | °C |  | 2 |
| Storage Temperature Range | TSTG | -55 |  | 150 | °C |  | 2 |
| Reverse Standoff Voltage | VRWM |  | 7.5 |  | V | SMAJ7.5(C)A row, bidirectional (C) variant | 3 |
| Breakdown Voltage Min | VBR | 8.33 |  |  | V | @ IT = 1.0 mA (Note 9: IT pulse 10ms to 15ms) | 3 |
| Breakdown Voltage Max | VBR |  |  | 9.21 | V | @ IT = 1.0 mA (Note 9: IT pulse 10ms to 15ms) | 3 |
| Test Current | IT |  | 1 |  | mA | Test current for VBR | 3 |
| Max Reverse Leakage Current | IR |  |  | 100 | µA | @ VRWM (Note 10) | 3 |
| Max Clamping Voltage | VC |  |  | 12.9 | V | @ IPP = 31.0 A | 3 |
| Max Peak Pulse Current | IPP |  |  | 31 | A |  | 3 |

## 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 |  Terminals: Lead-Free Plating (Matte Tin Finish). Solderable per MIL-STD-202, Method 208 | 1 |

## CAD (KiCad official)

- Symbol: `SMAJ7.5CA-13-F`
- Footprint: `Diode_SMD:D_SMA`
- 3D model: SMA (KiCad packages3D, STEP)
- 3D model files: `smaj7-5ca-13-f-etched.step` / `smaj7-5ca-13-f-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `smaj7-5ca-13-f.step` / `smaj7-5ca-13-f.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Diodes Incorporated datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8560079080209858560) (6 pp, sha256 `70c17cee9c231f90`, retrieved 2026-10-20, tier: lcsc)
- **Extractor:** `ds2sf` (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
- **CAD:** KiCad official libraries (CC-BY-SA 4.0).

[Datasheet PDF](docs/smaj7-5ca-13-f-datasheet.pdf)