# MBR1640CT

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

MBR1640CT 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 8 A per leg average forward current and 40 V reverse voltage. |
| 2 | CT | passive | Common cathode of both diode legs (center tap), connected to the metal tab; 16 A per device average forward current. |
| 3 | A2 | passive | Anode of the second Schottky diode leg, rated 8 A per leg average forward current and 40 V reverse voltage. |

## 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 |
|---|---|---|---|---|---|---|---|
| Peak Repetitive Reverse Voltage | VRRM |  |  | 40 | V |  | 1 |
| Working Peak Reverse Voltage | VRWM |  |  | 40 | V |  | 1 |
| DC Blocking Voltage | VR |  |  | 40 | V |  | 1 |
| Average Rectified Forward Current (per leg) | IF (AV) |  |  | 8 | A | 50% duty cycle @Tc=105°C, rectangular wave form | 1 |
| Average Rectified Forward Current (per device) | IF (AV) |  |  | 16 | A | 50% duty cycle @Tc=105°C, rectangular wave form | 1 |
| Peak One Cycle Non-Repetitive Surge Current (per leg) | IFSM |  |  | 180 | A | 8.3ms, Half Sine pulse | 1 |
| Forward Voltage Drop (per leg) | VF1 |  |  | 0.85 | V | @ 16A, Pulse, TJ = 25 C | 1 |
| Forward Voltage Drop (per leg) | VF2 |  |  | 0.75 | V | @ 16A, Pulse, TJ = 125 C | 1 |
| Reverse Current (per leg) | IR1 |  |  | 1 | mA | @VR = rated VR, TJ = 25 C | 1 |
| Reverse Current (per leg) | IR2 |  |  | 15 | mA | @VR = rated VR, TJ = 125 C | 1 |
| Junction Capacitance (per leg) | CT |  |  | 400 | 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 |
| Series Inductance (per leg) | LS |  | 8 |  | nH | Measured lead to lead 5 mm from package body | 1 |
| Typical Thermal Resistance Junction to Case | Rth(j-c) |  | 3 |  | C/W | DC operation | 2 |

## CAD (KiCad official)

- Symbol: `MBR1640CT`
- Footprint: `Package_TO_SOT_THT:TO-220-3_Vertical`
- 3D model: TO-220AB-3 (KiCad packages3D, STEP)
- 3D model files: `mbr1640ct-etched.step` / `mbr1640ct-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `mbr1640ct.step` / `mbr1640ct.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/8588896443050430464) (3 pp, sha256 `ec110f23c09de173`, 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/mbr1640ct-datasheet.pdf)