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1N5917B
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EIC Semicon Zener Diodes, DO-41. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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1N5917B
EIC Semicon · Zener Diodes · DO-41
1N5917B from EIC Semicon, in a DO-41. 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 end of the zener diode, marked by the color band; positive with respect to the anode in zener (reverse) operation, with 1N5917B nominal VZ 4.7 V at IZT 79.8 mA. |
| 2 | A | passive | Anode lead of the axial DO-41 zener diode, opposite the color-banded cathode end; maximum steady-state dissipation is 1.5 W at TL = 75 °C with 3/8" lead length. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | EIC Semicon |
| Package | DO-41 |
| 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 |
|---|---|---|---|---|---|---|---|
| Zener Voltage tolerance (suffix B) | VZ | -5 | 5 | % | suffix B indicates ± 5% tolerance | 2 | |
| Nominal Zener Voltage | VZ | 4.7 | V | @ IZT | 2 | ||
| Zener Test Current | IZT | 79.8 | mA | 2 | |||
| Maximum Zener Impedance | ZZT | 5 | Ω | @ IZT | 2 | ||
| Maximum Zener Impedance (knee) | ZZK | 500 | Ω | @ IZK = 1.0 mA | 2 | ||
| Maximum Reverse Leakage Current | IR | 5 | µA | @ VR = 1.5 V | 2 | ||
| Maximum DC Zener Current | IZM | 319 | mA | 2 | |||
| Maximum Steady State Power Dissipation | PD | 1.5 | W | @ TL = 75 ºC, Lead Length = 3/8" | 1 | ||
| Operating and Storage Temperature Range | TJ,TSTG | -65 | 175 | °C | 1 |
CAD (KiCad official)
- Symbol:
1N5917B - Footprint:
Diode_THT:D_DO-41_SOD81_P10.16mm_Horizontal - 3D model: DO-41 (KiCad packages3D, STEP)
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: EIC Semicon datasheet (4 pp, sha256
e98981022089f274, 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).
# 1N5917B
**EIC Semicon** · Zener Diodes · DO-41
1N5917B from EIC Semicon, in a DO-41. 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 end of the zener diode, marked by the color band; positive with respect to the anode in zener (reverse) operation, with 1N5917B nominal VZ 4.7 V at IZT 79.8 mA. |
| 2 | A | passive | Anode lead of the axial DO-41 zener diode, opposite the color-banded cathode end; maximum steady-state dissipation is 1.5 W at TL = 75 °C with 3/8" lead length. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | EIC Semicon |
| Package | DO-41 |
| 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 |
|---|---|---|---|---|---|---|---|
| Zener Voltage tolerance (suffix B) | VZ | -5 | | 5 | % | suffix B indicates ± 5% tolerance | 2 |
| Nominal Zener Voltage | VZ | | 4.7 | | V | @ IZT | 2 |
| Zener Test Current | IZT | | 79.8 | | mA | | 2 |
| Maximum Zener Impedance | ZZT | | | 5 | Ω | @ IZT | 2 |
| Maximum Zener Impedance (knee) | ZZK | | | 500 | Ω | @ IZK = 1.0 mA | 2 |
| Maximum Reverse Leakage Current | IR | | | 5 | µA | @ VR = 1.5 V | 2 |
| Maximum DC Zener Current | IZM | | | 319 | mA | | 2 |
| Maximum Steady State Power Dissipation | PD | | | 1.5 | W | @ TL = 75 ºC, Lead Length = 3/8" | 1 |
| Operating and Storage Temperature Range | TJ,TSTG | -65 | | 175 | °C | | 1 |
## CAD (KiCad official)
- Symbol: `1N5917B`
- Footprint: `Diode_THT:D_DO-41_SOD81_P10.16mm_Horizontal`
- 3D model: DO-41 (KiCad packages3D, STEP)
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [EIC Semicon datasheet](docs/1n5917b-datasheet.pdf) (4 pp, sha256 `e98981022089f274`, 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/1n5917b-datasheet.pdf)