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MUR3040DC-B
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YFW Diodes - Fast Recovery Rectifiers, TO-263. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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MUR3040DC-B
YFW · Diodes - Fast Recovery Rectifiers · TO-263
MUR3040DC-B from YFW, in a TO-263. 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 rectifier leg (PIN 1), rated 15 A average forward current per leg and 400 V repetitive peak reverse voltage. |
| 2 | K | passive | Common cathode of both legs (PIN 2), which is also the case/tab; total average forward current is 30 A. |
| 3 | A2 | passive | Anode of the second rectifier 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-263 |
| 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 Forward Voltage Drop | VF | 1.06 | 1.39 | V | IF=15A, TA=25°C, per leg | 1 | |
| Maximum Reverse Current | IR | 0.1 | 1 | uA | VR=400V, TA=25°C | 1 | |
| Maximum Reverse Recovery Time | TRR | 35 | nS | IF=0.5A, IR=1A, IRR=0.25A | 1 | ||
| 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 | 1 | ||
| Maximum Average Forward Rectified Current Total | Io | 30 | A | Total | 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 | 0.84 | V | IF=3A, TA=25°C | 1 | ||
| Forward Voltage Drop | VF | 0.68 | V | IF=3A, TA=125°C | 1 | ||
| Forward Voltage Drop | VF | 0.9 | V | IF=5A, TA=25°C | 1 | ||
| Forward Voltage Drop | VF | 0.74 | V | IF=5A, TA=125°C | 1 | ||
| Reverse Current | IR | 10 | uA | VR=400V, TA=25°C (second row as printed) | 1 |
CAD (KiCad official)
- Symbol:
MUR3040DC-B - Footprint:
Package_TO_SOT_SMD:TO-263-2 - 3D model: TO-263 (KiCad packages3D, STEP)
- 3D model files:
mur3040dc-b-etched.step/mur3040dc-b-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);mur3040dc-b.step/mur3040dc-b.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: YFW datasheet (4 pp, sha256
36b2740bd35d7ca2, retrieved 2026-10-22, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(text+vision), consensusclaude-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).
# MUR3040DC-B
**YFW** · Diodes - Fast Recovery Rectifiers · TO-263
MUR3040DC-B from YFW, in a TO-263. 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 rectifier leg (PIN 1), rated 15 A average forward current per leg and 400 V repetitive peak reverse voltage. |
| 2 | K | passive | Common cathode of both legs (PIN 2), which is also the case/tab; total average forward current is 30 A. |
| 3 | A2 | passive | Anode of the second rectifier 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-263 |
| 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 Forward Voltage Drop | VF | | 1.06 | 1.39 | V | IF=15A, TA=25°C, per leg | 1 |
| Maximum Reverse Current | IR | | 0.1 | 1 | uA | VR=400V, TA=25°C | 1 |
| Maximum Reverse Recovery Time | TRR | | | 35 | nS | IF=0.5A, IR=1A, IRR=0.25A | 1 |
| 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 | 1 |
| Maximum Average Forward Rectified Current Total | Io | | | 30 | A | Total | 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 | | 0.84 | | V | IF=3A, TA=25°C | 1 |
| Forward Voltage Drop | VF | | 0.68 | | V | IF=3A, TA=125°C | 1 |
| Forward Voltage Drop | VF | | 0.9 | | V | IF=5A, TA=25°C | 1 |
| Forward Voltage Drop | VF | | 0.74 | | V | IF=5A, TA=125°C | 1 |
| Reverse Current | IR | | 10 | | uA | VR=400V, TA=25°C (second row as printed) | 1 |
## CAD (KiCad official)
- Symbol: `MUR3040DC-B`
- Footprint: `Package_TO_SOT_SMD:TO-263-2`
- 3D model: TO-263 (KiCad packages3D, STEP)
- 3D model files: `mur3040dc-b-etched.step` / `mur3040dc-b-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `mur3040dc-b.step` / `mur3040dc-b.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [YFW datasheet](docs/mur3040dc-b-datasheet.pdf) (4 pp, sha256 `36b2740bd35d7ca2`, retrieved 2026-10-22, 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/mur3040dc-b-datasheet.pdf)