component
HER508 TB
Public Made by Adomby adom
YFW High Effic Rectifier, DO-27. 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
markdownHER508 TB
YFW · High Effic Rectifier · DO-27
HER508 TB from YFW, 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 lead, the end marked with the cathode band on the DO-201AD/DO-27 body; HER508 blocks up to 1000 V VRRM and passes 5.0 A average forward current. |
| 2 | A | passive | Anode lead, the unmarked end of the DO-201AD/DO-27 axial body; HER508 has a forward current rating of 5.0 A average at Tc = 100 °C. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | YFW |
| 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 | 1000 | V | 1 | |||
| Maximum RMS Voltage | VRMS | 700 | V | 1 | |||
| Maximum DC Blocking Voltage | VDC | 1000 | V | 1 | |||
| Maximum Average Forward Rectified Current | IF(AV) | 5 | A | Tc = 100 °C | 1 | ||
| Maximum DC Reverse Current | IR | 10 | μA | Ta = 25 °C, at rated DC blocking voltage | 1 | ||
| Maximum DC Reverse Current | IR | 500 | μA | Ta = 125 °C, at rated DC blocking voltage | 1 | ||
| Operating and Storage Temperature Range | Tj, Tstg | -55 | 150 | °C | 1 | ||
| Typical Junction Capacitance | Cj | 100 | pF | 1 | |||
| Typical Thermal Resistance | RθJA | 65 | °C/W | 1 |
CAD (KiCad official)
- Symbol:
HER508 TB - 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: YFW datasheet (3 pp, sha256
d1a425c5ca09d862, 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).