# SBR1045L

**LRC** · Schottky Barrier Diodes (SBD) · TO-277A

SBR1045L from LRC, in a TO-277A. 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 | Anode | passive | Anode terminal of the SBR1045L Schottky barrier rectifier, one of two anode leads in the TO-277A outline (pinout given as 1: Anode, 2: Anode, 3: Cathode). |
| 2 | Anode | passive | Anode terminal of the SBR1045L Schottky barrier rectifier, the second anode lead in the TO-277A outline (pinout given as 1: Anode, 2: Anode, 3: Cathode). |
| 3 | Cathode | passive | Cathode terminal of the SBR1045L rated for 45 V repetitive peak reverse voltage and 10 A forward current; the datasheet's Note 1 gives a cathode pad of 18.8 mm x 14.4 mm for a polyimide PCB with 2 oz. copper. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | LRC |
| Package | TO-277A |
| 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 |
| Maximum RMS voltage | VRMS |  |  | 31.5 | V |  | 1 |
| Maximum DC blocking voltage | VDC |  |  | 45 | V |  | 1 |
| Maximum average forward rectified current | IF(AV) |  |  | 10 | A | Tc = 75°C | 1 |
| Peak forward surge current | IFSM |  |  | 300 | A | 8.3ms single half sine-wave superimposed on rated load (JEDEC Method) | 1 |

## CAD (KiCad official)

- Symbol: `SBR1045L`
- Footprint: `Package_TO_SOT_SMD:TO-277A`
- 3D model: TO-277A (KiCad packages3D, STEP)
- 3D model files: `sbr1045l-etched.step` / `sbr1045l-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `sbr1045l.step` / `sbr1045l.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [LRC datasheet](docs/sbr1045l-datasheet.pdf) (4 pp, sha256 `3f2a807921bae5c3`, retrieved 2026-10-21, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (text), consensus `claude-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).

[Datasheet PDF](docs/sbr1045l-datasheet.pdf)