# MBR2045CTP

**SMC Sangdest Microelectronicstronic Nanjing** · Schottky Diodes · TO-220AB-3

MBR2045CTP from SMC Sangdest Microelectronicstronic Nanjing, in a TO-220AB-3. 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 | A1 | passive | Anode of the first Schottky diode leg, rated 10A average forward current per leg and 45V VRRM. |
| 2 | CK | passive | Common cathode of both diode legs, connected to the case/tab as shown in the circuit diagram; 20A per device total. |
| 3 | A2 | passive | Anode of the second Schottky diode leg, rated 10A average forward current per leg and 45V VRRM. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | SMC Sangdest Microelectronicstronic Nanjing |
| Package | TO-220AB-3 |
| 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 |
|---|---|---|---|---|---|---|---|
| Forward Voltage Drop (per leg), 20A pulse | VF1 |  | 0.74 | 0.84 | V | @ 20A, Pulse, TJ = 25 C | 1 |
| Forward Voltage Drop (per leg), 20A pulse, 125 C | VF2 |  | 0.7 | 0.72 | V | @ 20A, Pulse, TJ = 125 C | 1 |
| Reverse Current (per leg) | IR1 |  | 0.03 | 1 | mA | @VR = rated VR, TJ = 25 C | 1 |
| Reverse Current (per leg) | IR2 |  | 9 | 15 | mA | @VR = rated VR, TJ = 125 C | 1 |
| Junction Capacitance (per leg) | CT |  | 250 | 400 | pF | @VR = 5V, TC = 25 C, fSIG = 1MHz | 1 |
| Voltage Rate of Change | dv/dt |  |  | 10000 | V/s |  | 1 |
| Peak Repetitive Reverse Voltage / Working Peak Reverse Voltage / DC Blocking Voltage | VRRM |  |  | 45 | V |  | 1 |
| Average Rectified Forward Current (per leg) | IF (AV) |  |  | 10 | A | 50% duty cycle @Tc=116°C, rectangular wave form | 1 |
| Average Rectified Forward Current (per device) | IF (AV) |  |  | 20 | A | 50% duty cycle @Tc=116°C, rectangular wave form | 1 |
| Peak One Cycle Non-Repetitive Surge Current (per leg) | IFSM |  |  | 250 | A | 8.3ms, Half Sine pulse | 1 |
| Junction Temperature | TJ | -55 |  | 150 | °C |  | 2 |
| Storage Temperature | Tstg | -55 |  | 150 | °C |  | 2 |
| Typical Thermal Resistance Junction to Case | Rth(j-c) |  | 5 |  | °C/W | DC operation | 2 |

## CAD (KiCad official)

- Symbol: `MBR2045CTP`
- Footprint: `Package_TO_SOT_THT:TO-220-3_Vertical`
- 3D model: TO-220AB-3 (KiCad packages3D, STEP)
- 3D model files: `mbr2045ctp-etched.step` / `mbr2045ctp-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `mbr2045ctp.step` / `mbr2045ctp.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/8588896443059224576) (4 pp, sha256 `f4f07e5e81c93e04`, retrieved 2026-10-21, tier: lcsc)
- **Extractor:** `ds2sf` (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
- **CAD:** KiCad official libraries (CC-BY-SA 4.0).

[Datasheet PDF](docs/mbr2045ctp-datasheet.pdf)