# MA4E1338B1-287T

**MA/COM** · Diodes - General Purpose · SOT-23

MA4E1338B1-287T from MA/COM, in a SOT-23. 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 | 1 | passive | Outer terminal of the series-pair Schottky diodes (case style 287), connected through the first diode to common pin 3; max reverse voltage 8 V. |
| 2 | 2 | passive | Outer terminal of the series-pair Schottky diodes (case style 287), connected through the second diode to common pin 3; max reverse voltage 8 V. |
| 3 | 3 | passive | Center node shared by the two series-connected Schottky diodes of the MA4E1338B1 series pair; continuous forward current 150 mA max. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | MA/COM |
| Package | SOT-23 |
| Category | Diodes |
| Pins | 3 |

## CAD (KiCad official)

- Symbol: `MA4E1338B1-287T`
- Footprint: `Package_TO_SOT_SMD:SOT-23`
- 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files: `ma4e1338b1-287t-etched.step` / `ma4e1338b1-287t-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ma4e1338b1-287t.step` / `ma4e1338b1-287t.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [MA/COM datasheet](docs/ma4e1338b1-287t-datasheet.pdf) (6 pp, sha256 `fc7c312cd65ec105`, retrieved 2026-10-23, 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/ma4e1338b1-287t-datasheet.pdf)