# MBR1545

**SMC Sangdest Microelectronicstronic Nanjing** · Schottky Diodes · TO-220-2

MBR1545 from SMC Sangdest Microelectronicstronic Nanjing, in a TO-220-2. 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 | K | passive | Cathode of the Schottky rectifier (tab is also cathode per TO-220AC convention not stated); rated 45 V VRRM/VR and 15 A average forward current. |
| 2 | A | passive | Anode of the Schottky rectifier; forward voltage drop 0.70 V max at 15 A, TJ = 25 °C. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | SMC Sangdest Microelectronicstronic Nanjing |
| Package | TO-220-2 |
| Category | Diodes |
| 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 Repetitive Reverse Voltage | VRRM |  |  | 45 | V |  | 1 |
| Working Peak Reverse Voltage | VRWM |  |  | 45 | V |  | 1 |
| DC Blocking Voltage | VR |  |  | 45 | V |  | 1 |
| Average Rectified Forward Current | IF(AV) |  |  | 15 | A | 50% duty cycle @Tc=123°C, rectangular wave form | 1 |
| Peak One Cycle Non-Repetitive Surge Current | IFSM |  |  | 240 | A | 8.3ms, Half Sine pulse, TC = 25 C | 1 |
| Forward Voltage Drop | VF1 |  | 0.6 | 0.7 | V | @ 15A, Pulse, TJ = 25 C | 1 |
| Forward Voltage Drop | VF2 |  | 0.57 | 0.6 | V | @ 15 A, Pulse, TJ = 125 C | 1 |
| Reverse Current | IR1 |  | 0.03 | 1 | mA | @VR = rated VR, TJ = 25 C | 1 |
| Reverse Current | IR2 |  | 15 | 40 | mA | @VR = rated VR, TJ = 125 C | 1 |
| Junction Capacitance | CT |  | 815 | 900 | pF | @VR = 5V, TC = 25 C, fSIG = 1MHz | 1 |
| Voltage Rate of Change | dv/dt |  |  | 10000 | V/s |  | 1 |
| Junction Temperature | TJ | -55 |  | 150 | C |  | 2 |
| Storage Temperature | Tstg | -55 |  | 150 | C |  | 2 |
| Typical Thermal Resistance Junction to Case | RθJC |  | 1.6 |  | C/W | DC operation | 2 |

## CAD (KiCad official)

- Symbol: `MBR1545`
- Footprint: `Package_TO_SOT_THT:TO-220-2_Vertical`
- 3D model: TO-220-2 (KiCad packages3D, STEP)
- 3D model files: `mbr1545-etched.step` / `mbr1545-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `mbr1545.step` / `mbr1545.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [SMC Sangdest Microelectronicstronic Nanjing datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588891128217145344) (4 pp, sha256 `dcaacec6843f4a95`, retrieved 2026-10-18, 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/mbr1545-datasheet.pdf)