# MUR3040CT

**YFW** · Fast Recovery / High Efficiency Diodes · TO-220AB

MUR3040CT from YFW, 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 the first diode leg (PIN 1), rated 15 A average forward current per leg and 400 V repetitive peak reverse voltage. |
| 2 | CATHODE | passive | Common cathode of both diode legs (PIN 2, also the tab), with 30 A total average forward current and 400 V maximum DC blocking voltage. |
| 3 | A2 | passive | Anode of the second diode leg (PIN 3), rated 15 A average forward current per leg and 400 V repetitive peak reverse voltage. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | YFW |
| 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 Repetitive Peak Reverse Voltage | VRRM |  |  | 400 | V | Per leg, Ta=25°C | 1 |
| Maximum RMS voltage | VRMS |  |  | 400 | V | Per leg, Ta=25°C | 1 |
| Maximum DC Blocking Voltage | VDC |  |  | 400 | V | Per leg, Ta=25°C | 1 |
| Maximum Average Forward Rectified Current, Per Leg | Io |  |  | 15 | A | Per leg, Ta=25°C | 1 |
| Maximum Average Forward Rectified Current, Total | Io |  |  | 30 | A | Total (both legs), Ta=25°C | 1 |
| Peak Forward Surge Current | IFSM |  |  | 320 | A | 8.3ms single half sine-wave | 1 |
| Operating Temperature Range | TJ |  |  | 150 | °C |  | 1 |
| Storage Temperature Range | TSTG | -40 |  | 150 | °C |  | 1 |
| Forward Voltage Drop | VF |  | 1.06 | 1.39 | V | at IF=15A, TA=25°C; pulse test 300 µs, 1% duty cycle | 1 |
| Maximum Reverse Current | IR |  | 0.1 | 1 | uA | at VR=400V, TA=25°C | 1 |
| Maximum Reverse Recovery Time | TRR |  |  | 35 | nS | at IF=0.5A, IR=1A, IRR=0.25A | 1 |
| Forward Voltage Drop | VF |  | 0.9 |  | V | at IF=15A, TA=125°C; pulse test 300 µs, 1% duty cycle | 1 |
| Maximum Reverse Current (second printed row) | IR |  | 10 |  | uA | TA=25°C | 1 |
| Forward Voltage Drop | VF |  | 0.84 |  | V | at IF=3A, TA=25°C; pulse test 300 µs, 1% duty cycle | 1 |
| Forward Voltage Drop | VF |  | 0.68 |  | V | at IF=3A, TA=125°C; pulse test 300 µs, 1% duty cycle | 1 |
| Forward Voltage Drop | VF |  | 0.74 |  | V | at IF=5A, TA=125°C; pulse test 300 µs, 1% duty cycle | 1 |

## CAD (KiCad official)

- Symbol: `MUR3040CT`
- Footprint: `Package_TO_SOT_THT:TO-220-3_Vertical`
- 3D model: TO-220AB (KiCad packages3D, STEP)
- 3D model files: `mur3040ct-etched.step` / `mur3040ct-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `mur3040ct.step` / `mur3040ct.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [YFW datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590197740803022848) (4 pp, sha256 `17d505b54f69e4b1`, retrieved 2026-10-15, 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/mur3040ct-datasheet.pdf)