component
1N5918B
Public Made by Adomby adom
EIC Semicon Zener Diodes, DO-41. Unpolarised two-terminal part: the datasheet prints no pin numbers, so pins 1 and 2 follow the library convention, KiCad symbol/footprint/3D.
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1N5918B
EIC Semicon · Zener Diodes · DO-41
1N5918B 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: the banded/marked end per the datasheet; pad 1 of the KiCad diode footprint. |
| 2 | A | passive | Anode. |
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, ±5% | 2 | |
| Maximum Zener impedance | ZZT | 4 | Ω | @ IZT = 73.5 mA | 2 | ||
| Maximum Zener impedance (knee) | ZZK | 400 | Ω | @ IZK = 1.0 mA | 2 | ||
| Maximum reverse leakage current | IR | 5 | µA | @ VR = 2.0 V | 2 | ||
| Maximum DC zener current | IZM | 294 | mA | 2 | |||
| Maximum steady state power dissipation | PD | 1.5 | W | @ TL = 75 °C, lead length = 3/8" | 1 | ||
| Operating and storage temperature range | TJ,TSTG | -65 | 175 | °C | 1 | ||
| Nominal zener voltage | VZ | 5.1 | V | @ IZT = 73.5 mA | 2 |
CAD (KiCad official)
- Symbol:
1N5918B - 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
a0af7db3168d0540, 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).
# 1N5918B
**EIC Semicon** · Zener Diodes · DO-41
1N5918B 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: the banded/marked end per the datasheet; pad 1 of the KiCad diode footprint. |
| 2 | A | passive | Anode. |
## 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, ±5% | 2 |
| Maximum Zener impedance | ZZT | | | 4 | Ω | @ IZT = 73.5 mA | 2 |
| Maximum Zener impedance (knee) | ZZK | | | 400 | Ω | @ IZK = 1.0 mA | 2 |
| Maximum reverse leakage current | IR | | | 5 | µA | @ VR = 2.0 V | 2 |
| Maximum DC zener current | IZM | | | 294 | mA | | 2 |
| Maximum steady state power dissipation | PD | | | 1.5 | W | @ TL = 75 °C, lead length = 3/8" | 1 |
| Operating and storage temperature range | TJ,TSTG | -65 | | 175 | °C | | 1 |
| Nominal zener voltage | VZ | | 5.1 | | V | @ IZT = 73.5 mA | 2 |
## CAD (KiCad official)
- Symbol: `1N5918B`
- 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](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603026752784510976) (4 pp, sha256 `a0af7db3168d0540`, retrieved 2026-10-15, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins`, primary `cathode-band convention` (convention), consensus `off` (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/1n5918b-datasheet.pdf)