component
1N4748A
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.
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
markdown1N4748A
EIC Semicon · Zener Diodes · DO-41
1N4748A 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 (standard, suffix A) | VZ | -5 | 5 | % | Standard tolerance on nominal zener voltage (Note 1) | 2 | |
| Maximum zener impedance | ZZT | 23 | Ω | @ IZT = 11.5 mA | 2 | ||
| Maximum zener impedance (knee) | ZZK | 750 | Ω | @ IZK = 0.25 mA | 2 | ||
| Maximum reverse leakage current | IR | 5 | μA | @ VR = 16.7 V | 2 | ||
| Maximum zener current | IZM | 41 | mA | 2 | |||
| Maximum DC surge current | IRM | 205 | mApk | Non-repetitive 8.3 ms pulse square wave or sine superimposed on IZT, JEDEC Method (Note 2) | 2 | ||
| Maximum forward voltage | VF | 1.2 | V | IF = 200 mA | 1 | ||
| DC power dissipation | PD | 1 | W | TL = 50 °C (Note 1) | 1 | ||
| Junction temperature range | TJ | -55 | 175 | °C | 1 | ||
| Storage temperature range | Ts | -55 | 175 | °C | 1 | ||
| Maximum thermal resistance junction to ambient air | RθJA | 170 | K / W | Leads kept at ambient at 10 mm from case (Note 2) | 1 | ||
| Nominal zener voltage | VZ | 22 | V | @ IZT = 11.5 mA | 2 |
CAD (KiCad official)
- Symbol:
1N4748A - 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 (2 pp, sha256
95eb9cb074e9d53c, retrieved 2026-10-16, 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).