component
1N4738A-TAP
Public Made by Adomby adom
Vishay Intertech Zener Diodes, DO-204AL(DO-41). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
Generated by kicad-footprint-generator · KiCad file format 20260206
| Name | Last updated |
|---|---|
| docs | 2d ago |
| viewers | 2d ago |
| 1n4738a-tap-hero.glb | 2d ago |
| 1n4738a-tap-hero.overlay.json | 2d ago |
| 1n4738a-tap.glb | 2d ago |
| 1n4738a-tap.kicad_mod | 2d ago |
| 1n4738a-tap.kicad_sym | 2d ago |
| 1n4738a-tap.lbr | 2d ago |
| 1n4738a-tap.step | 2d ago |
| package.json | 2d ago |
| page.json | 2d ago |
| README.md | 2d ago |
1N4738A-TAP
Vishay Intertech · Zener Diodes · DO-204AL(DO-41)
1N4738A-TAP from Vishay Intertech, in a DO-204AL(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, marked by the cathode identification band on the DO-41 body; the Zener diode (VZ nom. 8.2 V at IZT 31 mA for 1N4738A) is reverse-biased with this lead positive. |
| 2 | A | passive | Anode lead of the Zener diode, opposite the cathode band; maximum forward voltage is 1.2 V at IF = 200 mA. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Vishay Intertech |
| Package | DO-204AL(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 nominal | VZ | 8.2 | V | at IZT1 | 2 | ||
| Zener voltage tolerance | VZ | -5 | 5 | % | Standard Zener voltage tolerance | 1 | |
| Test current | IZT1 | 31 | mA | 2 | |||
| Reverse leakage current | IR | 10 | μA | at VR = 6 V | 2 | ||
| Dynamic resistance | ZZT | 4.5 | Ω | at IZT1, f = 1 kHz | 2 | ||
| Dynamic resistance (knee) | ZZK | 700 | Ω | at IZT2 = 0.5 mA, f = 1 kHz | 2 | ||
| Surge current | IR | 550 | mA | tp = 10 ms | 2 | ||
| Regulator current | IZM | 110 | mA | electrodes at 4 mm from case kept at ambient temperature | 2 | ||
| Power dissipation | Ptot | 1300 | mW | Leads at 4 mm from case kept at ambient temperature, Tamb = 25 °C | 1 | ||
| Forward voltage | VF | 1.2 | V | IF = 200 mA | 1 | ||
| Junction temperature | Tj | 175 | °C | 1 | |||
| Storage temperature range | Tstg | -65 | 175 | °C | 1 | ||
| Thermal resistance junction to ambient air | RthJA | 110 | K/W | Leads at 4 mm from case kept at ambient temperature | 1 |
CAD (KiCad official)
- Symbol:
1N4738A-TAP - Footprint:
Diode_THT:D_DO-41_SOD81_P10.16mm_Horizontal - 3D model: DO-204AL(DO-41) (KiCad packages3D, STEP)
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Vishay Intertech datasheet (4 pp, sha256
33369d6dd0299505, retrieved 2026-10-27, tier: manufacturer) - 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).