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UF108
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SUNMATE Elec Fast Recovery / High Efficiency Diodes, DO-41. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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UF108
SUNMATE Elec · Fast Recovery / High Efficiency Diodes · DO-41
UF108 from SUNMATE Elec, 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 | K | passive | Cathode, identified by the cathode band on the DO-41 body; blocks up to 800V DC (VRRM/VR for UF108) and conducts up to 1.0A average rectified current. |
| 2 | A | passive | Anode lead of the DO-41 axial package; forward voltage is 1.7V max at IF = 1.0A for the UF108. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | SUNMATE Elec |
| 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 |
|---|---|---|---|---|---|---|---|
| Peak Repetitive Reverse Voltage / Working Peak Reverse Voltage / DC Blocking Voltage | VRRM, VRWM, VR | 800 | V | 1 | |||
| RMS Reverse Voltage | VR(RMS) | 560 | V | 1 | |||
| Average Rectified Output Current | IO | 1 | A | TA = 55C, leads at ambient temperature 9.5mm from case | 1 | ||
| Non-Repetitive Peak Forward Surge Current | IFSM | 30 | A | 8.3ms single half sine-wave superimposed on rated load (JEDEC method) | 1 | ||
| Forward Voltage | VFM | 1.3 | V | IF = 1.0A | 1 | ||
| Peak Reverse Current | IRM | 5 | µA | TA = 25C, at rated DC blocking voltage | 1 | ||
| Peak Reverse Current | IRM | 100 | µA | TA = 100C, at rated DC blocking voltage | 1 | ||
| Reverse Recovery Time | trr | 75 | ns | IF = 0.5A, IR = 1.0A, Irr = 0.25A | 1 | ||
| Typical Junction Capacitance | Cj | 10 | pF | 1.0MHz, applied reverse voltage 4.0V DC | 1 | ||
| Typical Thermal Resistance Junction to Ambient | RθJA | 95 | K/W | 1 | |||
| Operating and Storage Temperature Range | Tj, TSTG | -65 | 150 | C | 1 |
CAD (KiCad official)
- Symbol:
UF108 - 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: SUNMATE Elec datasheet (2 pp, sha256
4c8ad4cb60f1a8ea, retrieved 2026-10-22, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(text), consensusclaude-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).
# UF108
**SUNMATE Elec** · Fast Recovery / High Efficiency Diodes · DO-41
UF108 from SUNMATE Elec, 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 | K | passive | Cathode, identified by the cathode band on the DO-41 body; blocks up to 800V DC (VRRM/VR for UF108) and conducts up to 1.0A average rectified current. |
| 2 | A | passive | Anode lead of the DO-41 axial package; forward voltage is 1.7V max at IF = 1.0A for the UF108. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | SUNMATE Elec |
| 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 |
|---|---|---|---|---|---|---|---|
| Peak Repetitive Reverse Voltage / Working Peak Reverse Voltage / DC Blocking Voltage | VRRM, VRWM, VR | | | 800 | V | | 1 |
| RMS Reverse Voltage | VR(RMS) | | | 560 | V | | 1 |
| Average Rectified Output Current | IO | | | 1 | A | TA = 55C, leads at ambient temperature 9.5mm from case | 1 |
| Non-Repetitive Peak Forward Surge Current | IFSM | | | 30 | A | 8.3ms single half sine-wave superimposed on rated load (JEDEC method) | 1 |
| Forward Voltage | VFM | | | 1.3 | V | IF = 1.0A | 1 |
| Peak Reverse Current | IRM | | | 5 | µA | TA = 25C, at rated DC blocking voltage | 1 |
| Peak Reverse Current | IRM | | | 100 | µA | TA = 100C, at rated DC blocking voltage | 1 |
| Reverse Recovery Time | trr | | | 75 | ns | IF = 0.5A, IR = 1.0A, Irr = 0.25A | 1 |
| Typical Junction Capacitance | Cj | | 10 | | pF | 1.0MHz, applied reverse voltage 4.0V DC | 1 |
| Typical Thermal Resistance Junction to Ambient | RθJA | | 95 | | K/W | | 1 |
| Operating and Storage Temperature Range | Tj, TSTG | -65 | | 150 | C | | 1 |
## CAD (KiCad official)
- Symbol: `UF108`
- 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:** [SUNMATE Elec datasheet](docs/uf108-datasheet.pdf) (2 pp, sha256 `4c8ad4cb60f1a8ea`, retrieved 2026-10-22, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-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/uf108-datasheet.pdf)