component
RL257
Public Made by Adomby adom
NH Diodes - General Purpose, DO-15. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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RL257
NH · Diodes - General Purpose · DO-15
RL257 from NH, in a DO-15. 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 of the rectifier (plated axial lead), 1000 V maximum repetitive peak reverse voltage for RL257, 2.5 A average forward current. |
| 2 | A | passive | Anode of the rectifier (plated axial lead), 2.5 A average forward rectified current and 150 A peak surge (8.3 ms). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | NH |
| Package | DO-15 |
| 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 repetitive peak reverse voltage | VRRM | 1000 | V | RL257 | 1 | ||
| Maximum RMS voltage | VRMS | 700 | V | RL257 | 1 | ||
| Maximum DC blocking voltage | VDC | 1000 | V | RL257 | 1 | ||
| Maximum average forward rectified current | IF(AV) | 2.5 | A | see fig.1 | 1 | ||
| Peak forward surge current | IFSM | 150 | A | 8.3ms single half sine-wave superimposed on rated load | 1 | ||
| Maximum instantaneous forward voltage | VF | 1 | V | IF=2.5 A, TA=25℃ | 1 | ||
| Maximum reverse current at rated DC blocking voltage | IR | 5 | uA | TA=25℃, VR=VRRM | 1 | ||
| Maximum reverse current at rated DC blocking voltage | IR | 50 | uA | TA=125℃, VR=80%*VRRM | 1 | ||
| Typical junction capacitance | CJ | 35 | pF | 4V,1MHz | 1 | ||
| Typical thermal resistance | RθJA | 53 | ℃/W | Note 2: PCB mounted with 0.1"x0.1" copper pad | 1 | ||
| Typical thermal resistance | RθJC | 8 | ℃/W | Note 2: PCB mounted with 0.1"x0.1" copper pad | 1 | ||
| Operating junction temperature range | TJ | -55 | 150 | ℃ | 1 | ||
| Storage temperature range | TSTG | -55 | 150 | ℃ | 1 |
CAD (KiCad official)
- Symbol:
RL257 - Footprint:
Diode_THT:D_DO-15_P12.70mm_Horizontal - 3D model: DO-15 (KiCad packages3D, STEP)
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: NH datasheet (1 pp, sha256
76d4797f65f92193, 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).
# RL257
**NH** · Diodes - General Purpose · DO-15
RL257 from NH, in a DO-15. 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 of the rectifier (plated axial lead), 1000 V maximum repetitive peak reverse voltage for RL257, 2.5 A average forward current. |
| 2 | A | passive | Anode of the rectifier (plated axial lead), 2.5 A average forward rectified current and 150 A peak surge (8.3 ms). |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | NH |
| Package | DO-15 |
| 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 repetitive peak reverse voltage | VRRM | | | 1000 | V | RL257 | 1 |
| Maximum RMS voltage | VRMS | | | 700 | V | RL257 | 1 |
| Maximum DC blocking voltage | VDC | | | 1000 | V | RL257 | 1 |
| Maximum average forward rectified current | IF(AV) | | | 2.5 | A | see fig.1 | 1 |
| Peak forward surge current | IFSM | | | 150 | A | 8.3ms single half sine-wave superimposed on rated load | 1 |
| Maximum instantaneous forward voltage | VF | | | 1 | V | IF=2.5 A, TA=25℃ | 1 |
| Maximum reverse current at rated DC blocking voltage | IR | | | 5 | uA | TA=25℃, VR=VRRM | 1 |
| Maximum reverse current at rated DC blocking voltage | IR | | | 50 | uA | TA=125℃, VR=80%*VRRM | 1 |
| Typical junction capacitance | CJ | | 35 | | pF | 4V,1MHz | 1 |
| Typical thermal resistance | RθJA | | 53 | | ℃/W | Note 2: PCB mounted with 0.1"x0.1" copper pad | 1 |
| Typical thermal resistance | RθJC | | 8 | | ℃/W | Note 2: PCB mounted with 0.1"x0.1" copper pad | 1 |
| Operating junction temperature range | TJ | -55 | | 150 | ℃ | | 1 |
| Storage temperature range | TSTG | -55 | | 150 | ℃ | | 1 |
## CAD (KiCad official)
- Symbol: `RL257`
- Footprint: `Diode_THT:D_DO-15_P12.70mm_Horizontal`
- 3D model: DO-15 (KiCad packages3D, STEP)
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [NH datasheet](docs/rl257-datasheet.pdf) (1 pp, sha256 `76d4797f65f92193`, 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/rl257-datasheet.pdf)