# MBR1040CT

**Shandong Jingdao Microelectronics** · Schottky Diodes · TO-220AB

MBR1040CT from Shandong Jingdao Microelectronics, in a TO-220AB. 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 diode 1 (per-diode 5 A average forward current, 40 V VRRM for MBR1040CT, VF 0.70 V at 5 A). |
| 2 | K | passive | Common cathode of both diodes, also connected to the mounting tab (per-device 10 A average forward current, 40 V maximum DC blocking voltage). |
| 3 | A2 | passive | Anode of diode 2 (per-diode 5 A average forward current, 40 V VRRM for MBR1040CT, VF 0.70 V at 5 A). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Shandong Jingdao Microelectronics |
| Package | TO-220AB |
| 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 Recurrent Peak Reverse Voltage (40 V CT column) | VRRM |  |  | 40 | V |  | 1 |
| Maximum RMS Voltage (40 V CT column) | VRMS |  |  | 28 | V |  | 1 |
| Maximum DC Blocking Voltage (40 V CT column) | VDC |  |  | 40 | V |  | 1 |
| Maximum Average Forward Rectified Current, per diode | IF(AV) |  |  | 5 | A | Per diode | 1 |
| Maximum Average Forward Rectified Current, per device | IF(AV) |  |  | 10 | A | Per device | 1 |
| Operating Junction Temperature Range | Tj | -55 |  | 150 | °C |  | 1 |
| Typical Thermal Resistance, junction to ambient | RθJA |  | 45 |  | °C/W | P.C.B. mounted with 10cmX10cmX1mm copper pad areas | 1 |

## CAD (KiCad official)

- Symbol: `MBR1040CT`
- Footprint: `Package_TO_SOT_THT:TO-220-3_Vertical`
- 3D model: TO-220AB (KiCad packages3D, STEP)
- 3D model files: `mbr1040ct-etched.step` / `mbr1040ct-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `mbr1040ct.step` / `mbr1040ct.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Shandong Jingdao Microelectronics datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590174774057074688) (5 pp, sha256 `0c41ce8569e8586c`, retrieved 2026-10-19, 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/mbr1040ct-datasheet.pdf)