# MUR1100ERLG

**onsemi** · Fast Recovery / High Efficiency Diodes · DO-41

MUR1100ERLG from onsemi, in a DO-41. 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 | CATHODE | passive | Cathode lead, marked by the polarity band on the package; the rectifier has a 1000 V reverse voltage rating (VRRM/VRWM/VR) and a 1.0 A average forward current rating. |
| 2 | ANODE | passive | Anode lead of the ultrafast rectifier, which is rated for 175°C maximum operating junction temperature. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | onsemi |
| Package | DO-41 |
| Category | Diodes |
| Pins | 2 |

## 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 Instantaneous Forward Voltage (iF = 1.0 A, TJ = 150°C) | vF |  |  | 1.5 | V | iF = 1.0 A, TJ = 150°C | 2 |
| Maximum Instantaneous Forward Voltage (iF = 1.0 A, TJ = 25°C) | vF |  |  | 1.75 | V | iF = 1.0 A, TJ = 25°C | 2 |
| Maximum Instantaneous Reverse Current (Rated dc Voltage, TJ = 100°C) | iR |  |  | 600 | A | Rated dc Voltage, TJ = 100°C | 2 |
| Maximum Instantaneous Reverse Current (Rated dc Voltage, TJ = 25°C) | iR |  |  | 10 | A | Rated dc Voltage, TJ = 25°C | 2 |
| Maximum Reverse Recovery Time | trr |  |  | 100 | ns | IF = 1.0 A, di/dt = 50 Amp/s | 2 |
| Maximum Reverse Recovery Time | trr |  |  | 75 | ns | IF = 0.5 A, iR = 1.0 Amp, IREC = 0.25 A | 2 |
| Maximum Forward Recovery Time | tfr |  |  | 75 | ns | IF = 1.0 A, di/dt = 100 Amp/s, recovery to 1.0 V | 2 |
| Controlled Avalanche Energy | WAVAL | 10 |  |  | mJ | See Test Circuit in Figure 6 | 2 |
| Peak Repetitive Reverse Voltage (MUR1100E) | VRRM |  |  | 1000 | V |  | 1 |
| Working Peak Reverse Voltage (MUR1100E) | VRWM |  |  | 1000 | V |  | 1 |
| DC Blocking Voltage (MUR1100E) | VR |  |  | 1000 | V |  | 1 |
| Average Rectified Forward Current | IF(AV) |  |  | 1 | A | TA = 95°C; square wave, mounting method #3 per Note 3 | 1 |
| Non-Repetitive Peak Surge Current | IFSM |  |  | 35 | A | Surge at rated load, halfwave, single phase, 60 Hz | 1 |
| Operating Junction Temperature and Storage Temperature Range | TJ, Tstg | -65 |  | 175 | °C |  | 1 |
| Typical Peak Reverse Recovery Current | IRM |  | 1.7 |  | A | IF = 1.0 A, di/dt = 50 A/s | 2 |
| Maximum Thermal Resistance, Junction-to-Ambient | RJA |  | 50 |  | °C/W | Mounting Method #3 per Note 3 (value from Figure 3 legend) | 3 |

## CAD (KiCad official)

- Symbol: `MUR1100ERLG`
- Footprint: `Diode_THT:D_DO-41_SOD81_P10.16mm_Horizontal`
- 3D model: DO-41 (KiCad packages3D, STEP)

## Provenance

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

- **Datasheet:** [onsemi datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588887204319383552) (6 pp, sha256 `182ae50969249c80`, retrieved 2026-10-14, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (text), consensus `claude-sonnet-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/mur1100erlg-datasheet.pdf)