component
SR540
Public Made by Adomby adom
NH Schottky Diodes, DO-27. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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SR540
NH · Schottky Diodes · DO-27
SR540 from NH, in a DO-27. 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, marked by the color (white) band on the axial package; positive end of the Schottky rectifier, with VRRM 40 V for SR540. |
| 2 | A | passive | Anode, the axial lead opposite the cathode band; conducts forward current up to 5.0 A average for the SR5xx series. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | NH |
| Package | DO-27 |
| 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 | 40 | V | 1 | |||
| Maximum RMS voltage | VRMS | 28 | V | 1 | |||
| Maximum DC blocking voltage | VDC | 40 | V | 1 | |||
| Maximum average forward rectified current | IF(AV) | 5 | A | see fig.1 | 1 | ||
| Maximum instantaneous forward voltage | VF | 0.55 | V | @ 5.0 A, Ta=25℃, pulse width < 300 uS, duty cycle < 2% | 1 |
Materials and finish
As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).
| Part | Material | Colour / plating | Datasheet says | Page |
|---|---|---|---|---|
| contacts | Copper | 3.Thermal resistance from junction to lead vertical P.C.B. mounted , 0.375"(9.5mm)lead length,Polymide PCB, 2 oz Copper. | 1 |
CAD (KiCad official)
- Symbol:
SR540 - Footprint:
Diode_THT:D_DO-27_P15.24mm_Horizontal - 3D model: DO-27 (KiCad packages3D, STEP)
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: NH datasheet (5 pp, sha256
9210dc83866bc5be, 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).
# SR540
**NH** · Schottky Diodes · DO-27
SR540 from NH, in a DO-27. 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, marked by the color (white) band on the axial package; positive end of the Schottky rectifier, with VRRM 40 V for SR540. |
| 2 | A | passive | Anode, the axial lead opposite the cathode band; conducts forward current up to 5.0 A average for the SR5xx series. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | NH |
| Package | DO-27 |
| 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 | | | 40 | V | | 1 |
| Maximum RMS voltage | VRMS | | | 28 | V | | 1 |
| Maximum DC blocking voltage | VDC | | | 40 | V | | 1 |
| Maximum average forward rectified current | IF(AV) | | | 5 | A | see fig.1 | 1 |
| Maximum instantaneous forward voltage | VF | | | 0.55 | V | @ 5.0 A, Ta=25℃, pulse width < 300 uS, duty cycle < 2% | 1 |
## Materials and finish
As the datasheet states them (page.json `metadata.appearance`; the 3D model's colours follow it).
| Part | Material | Colour / plating | Datasheet says | Page |
|---|---|---|---|---|
| contacts | Copper | | 3.Thermal resistance from junction to lead vertical P.C.B. mounted , 0.375"(9.5mm)lead length,Polymide PCB, 2 oz Copper. | 1 |
## CAD (KiCad official)
- Symbol: `SR540`
- Footprint: `Diode_THT:D_DO-27_P15.24mm_Horizontal`
- 3D model: DO-27 (KiCad packages3D, STEP)
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [NH datasheet](docs/sr540-datasheet.pdf) (5 pp, sha256 `9210dc83866bc5be`, 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/sr540-datasheet.pdf)