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HER503
Public Made by Adomby adom
SUNMATE Elec Fast Recovery / High Efficiency Diodes, DO-27. Unpolarised two-terminal part: the datasheet prints no pin numbers, so pins 1 and 2 follow the library convention, 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
markdownHER503
SUNMATE Elec · Fast Recovery / High Efficiency Diodes · DO-27
HER503 from SUNMATE Elec, 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: the banded/marked end per the datasheet; pad 1 of the KiCad diode footprint. |
| 2 | A | passive | Anode. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | SUNMATE Elec |
| 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 Recurrent Peak Reverse Voltage | VRRM | 200 | V | 1 | |||
| Maximum RMS Voltage | VRMS | 140 | V | 1 | |||
| Maximum DC Blocking Voltage | VDC | 200 | V | 1 | |||
| Maximum Average Forward Current | IF(AV) | 5 | A | 0.375"(9.5mm) lead length, Ta = 55 °C | 1 | ||
| Maximum Peak Forward Surge Current | IFSM | 200 | A | 8.3 ms single half sine wave superimposed on rated load (JEDEC method) | 1 | ||
| Maximum DC Reverse Current | IR | 10 | μA | Ta = 25 °C, at rated DC blocking voltage | 1 | ||
| Maximum DC Reverse Current | IR(H) | 50 | μA | Ta = 100 °C, at rated DC blocking voltage | 1 | ||
| Typical Junction Capacitance | CJ | 50 | pf | Measured at 1.0 MHz and applied reverse voltage of 4.0 VDC (Note 2) | 1 | ||
| Junction Temperature Range | TJ | -65 | 150 | °C | 1 | ||
| Storage Temperature Range | TSTG | -65 | 150 | °C | 1 |
CAD (KiCad official)
- Symbol:
HER503 - 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: SUNMATE Elec datasheet (2 pp, sha256
8bd19602cd9fb659, retrieved 2026-10-15, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins, primarycathode-band convention(convention), consensusoff(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).