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.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownRL257
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).