# SL1045

**MDD（Microdiode Electronics）** · Schottky Barrier Diodes (SBD) · TO-277

SL1045 from MDD（Microdiode Electronics）, in a TO-277. 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 | A | passive | Anode, left pin; connected to the same anode as the right pin per the pin diagram. |
| 2 | A | passive | Anode, right pin; connected to the same anode as the left pin per the pin diagram. |
| 3 | K | passive | Cathode, the bottom-side heat sink tab, which is the thermal pad (the datasheet's thermal-resistance test uses an 18.8 x 14.4 mm cathode pad). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | MDD（Microdiode Electronics） |
| Package | TO-277 |
| Category | Diodes |
| Pins | 3 |

## Electrical characteristics

Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Maximum repetitive peak reverse voltage | VRRM |  |  | 45 | V |  | 1 |
| RMS reverse voltage | VRMS |  |  | 32 | V |  | 1 |
| Average rectified output current | I(O) |  |  | 10 | A |  | 1 |
| Non-repetitive peak forward surge current | IFSM |  |  | 175 | A | 8.3ms single half sine-wave superimposed on rated load (JEDEC method) | 1 |
| Forward voltage drop | vF |  | 0.44 | 0.48 | V | at 10A | 1 |
| Peak reverse current at rated DC blocking voltage | IR |  | 100 | 200 | uA | TA=25℃ | 1 |
| Peak reverse current at rated DC blocking voltage | IR |  | 10 | 20 | mA | TA=100℃ | 1 |
| Operating junction storage temperature range | TJ | -55 |  | 150 | ℃ |  | 1 |
| Storage temperature range | TSTG | -55 |  | 150 | ℃ |  | 1 |
| Typical thermal resistance | RθJA |  | 65 |  | ℃/W | note 2: polymide PCB, 2oz. copper | 1 |
| Typical junction capacitance | CJ |  | 1200 |  | pF | measured at 1.0 MHz, applied reverse voltage 4.0Vdc (note 1) | 1 |

## CAD (KiCad official)

- Symbol: `SL1045`
- Footprint: `Package_TO_SOT_SMD:TO-277A`
- 3D model: TO-277 (KiCad packages3D, STEP)
- 3D model files: `sl1045-etched.step` / `sl1045-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `sl1045.step` / `sl1045.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [MDD（Microdiode Electronics） datasheet](docs/sl1045-datasheet.pdf) (4 pp, sha256 `bd12aa343698523f`, retrieved 2026-10-21, 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/sl1045-datasheet.pdf)