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HER508
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Yangzhou Yangjie Elec Tech High Effic Rectifier, DO-201AD. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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HER508
Yangzhou Yangjie Elec Tech · High Effic Rectifier · DO-201AD
HER508 from Yangzhou Yangjie Elec Tech, in a DO-201AD. 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, identified by the color band on the DO-201AD (DO-27) package; HER508 has VRRM of 1000 V and 5.0 A average forward current. |
| 2 | A | passive | Anode, the lead opposite the color-banded cathode end; HER508 has IFSM of 150 A non-repetitive forward surge current. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Yangzhou Yangjie Elec Tech |
| Package | DO-201AD |
| 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 |
|---|---|---|---|---|---|---|---|
| Repetitive Peak Reverse Voltage | VRRM | 1000 | V | Ta=25℃ | 1 | ||
| Average Forward Current | IO | 5 | A | @60Hz sine wave, Resistance load, Ta=50℃ | 1 | ||
| Forward Surge Current (Non-repetitive) | IFSM | 150 | A | @60Hz Half-sine wave, 1 cycle, Ta=25℃ | 1 | ||
| Storage Temperature | Tstg | -55 | 150 | ℃ | 1 | ||
| Junction Temperature | Tj | -55 | 150 | ℃ | 1 | ||
| Maximum instantaneous forward voltage drop per diode | VFM | 1.7 | V | IFM=5.0A | 1 | ||
| Maximum DC reverse current at rated DC blocking voltage | IRRM1 | 2.5 | μA | Ta=25℃ | 1 | ||
| Maximum DC reverse current at rated DC blocking voltage | IRRM2 | 150 | μA | Ta=125℃ | 1 | ||
| Reverse Recovery time | trr | 75 | ns | IF=0.5A IR=1A IRR=0.25A | 1 | ||
| Typical junction capacitance | Cj | 60 | pF | Measured at 1MHZ and Applied Reverse Voltage of 4.0 V.D.C. | 1 | ||
| Thermal Resistance (Typical) | RθJ-A | 20 | ℃/W | 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 | tin | ● Terminals: Tin plated leads, solderable per J-STD- 002 and JESD22-B102 | 1 |
CAD (KiCad official)
- Symbol:
HER508 - Footprint:
Diode_THT:D_DO-201AD_P15.24mm_Horizontal - 3D model: DO-201AD (KiCad packages3D, STEP)
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Yangzhou Yangjie Elec Tech datasheet (4 pp, sha256
0c3ce88c27e255bf, 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).
# HER508
**Yangzhou Yangjie Elec Tech** · High Effic Rectifier · DO-201AD
HER508 from Yangzhou Yangjie Elec Tech, in a DO-201AD. 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, identified by the color band on the DO-201AD (DO-27) package; HER508 has VRRM of 1000 V and 5.0 A average forward current. |
| 2 | A | passive | Anode, the lead opposite the color-banded cathode end; HER508 has IFSM of 150 A non-repetitive forward surge current. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Yangzhou Yangjie Elec Tech |
| Package | DO-201AD |
| 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 |
|---|---|---|---|---|---|---|---|
| Repetitive Peak Reverse Voltage | VRRM | | | 1000 | V | Ta=25℃ | 1 |
| Average Forward Current | IO | | | 5 | A | @60Hz sine wave, Resistance load, Ta=50℃ | 1 |
| Forward Surge Current (Non-repetitive) | IFSM | | | 150 | A | @60Hz Half-sine wave, 1 cycle, Ta=25℃ | 1 |
| Storage Temperature | Tstg | -55 | | 150 | ℃ | | 1 |
| Junction Temperature | Tj | -55 | | 150 | ℃ | | 1 |
| Maximum instantaneous forward voltage drop per diode | VFM | | | 1.7 | V | IFM=5.0A | 1 |
| Maximum DC reverse current at rated DC blocking voltage | IRRM1 | | | 2.5 | μA | Ta=25℃ | 1 |
| Maximum DC reverse current at rated DC blocking voltage | IRRM2 | | | 150 | μA | Ta=125℃ | 1 |
| Reverse Recovery time | trr | | | 75 | ns | IF=0.5A IR=1A IRR=0.25A | 1 |
| Typical junction capacitance | Cj | | 60 | | pF | Measured at 1MHZ and Applied Reverse Voltage of 4.0 V.D.C. | 1 |
| Thermal Resistance (Typical) | RθJ-A | | 20 | | ℃/W | | 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 | | tin | ● Terminals: Tin plated leads, solderable per J-STD- 002 and JESD22-B102 | 1 |
## CAD (KiCad official)
- Symbol: `HER508`
- Footprint: `Diode_THT:D_DO-201AD_P15.24mm_Horizontal`
- 3D model: DO-201AD (KiCad packages3D, STEP)
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [Yangzhou Yangjie Elec Tech datasheet](docs/her508-datasheet.pdf) (4 pp, sha256 `0c3ce88c27e255bf`, 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/her508-datasheet.pdf)