# SBR5100

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

SBR5100 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 | A | passive | Anode lead (one of two small terminals on the TO-277A package), which carries up to 5.0 A average forward current (IF(AV) at Tc = 75°C) with 100 V maximum DC blocking voltage. |
| 2 | A | passive | Anode lead (second of two small terminals, electrically common with the other anode lead), which carries up to 5.0 A average forward current (IF(AV) at Tc = 75°C) with 100 V maximum DC blocking voltage. |
| 3 | K | passive | Cathode, the large exposed tab/pad of the TO-277A package, which is also the main heat-spreading pad (RθJC 8 °C/W typical) and is rated for 100 V maximum repetitive peak reverse voltage. |

## 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 |  |  | 100 | V |  | 1 |
| Maximum RMS voltage | VRMS |  |  | 70 | V |  | 1 |
| Maximum DC blocking voltage | VDC |  |  | 100 | V |  | 1 |
| Maximum average forward rectified current | IF(AV) |  |  | 5 | A | Tc = 75°C | 1 |
| Peak forward surge current | IFSM |  |  | 150 | A | 8.3ms single half sine-wave superimposed on rated load (JEDEC Method) | 1 |
| Operating junction temperature range | TJ | -55 |  | 175 | °C |  | 1 |
| Storage temperature range | TSTG | -55 |  | 150 | °C |  | 1 |
| Maximum instantaneous forward voltage | VF |  |  | 0.87 | V | 5A, 25°C | 1 |
| Maximum DC reverse current | IR |  |  | 0.015 | mA | Tj = 25°C, at rated DC blocking voltage | 1 |
| Maximum DC reverse current | IR |  |  | 10 | mA | Tj = 100°C, at rated DC blocking voltage (note 2) | 1 |
| Maximum DC reverse current | IR |  |  | 20 | mA | Tj = 125°C, at rated DC blocking voltage (note 2) | 1 |
| Typical thermal resistance junction to case | RθJC |  | 8 |  | °C/W | Note 1 | 1 |
| Typical thermal resistance junction to lead | RθJL |  | 15 |  | °C/W | Note 1 | 1 |
| Typical thermal resistance junction to ambient | RθJA |  | 31 |  | °C/W | Note 1 | 1 |
| Typical thermal resistance junction to ambient | RθJA |  | 135 |  | °C/W | Note 3 | 1 |
| Typical junction capacitance | CJ |  | 500 |  | PF | 4.0V, 1MHz | 1 |

## CAD (KiCad official)

- Symbol: `SBR5100`
- Footprint: `Package_TO_SOT_SMD:TO-277A`
- 3D model: TO-277A (KiCad packages3D, STEP)
- 3D model files: `sbr5100-etched.step` / `sbr5100-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `sbr5100.step` / `sbr5100.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [LRC datasheet](docs/sbr5100-datasheet.pdf) (9 pp, sha256 `a40b6923b7cd5653`, 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/sbr5100-datasheet.pdf)