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1N4466
Public Made by Adomby adom
Microchip Tech Zener Diodes, DO-41. Pinout cross-checked by two models against the datasheet, 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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Contents
README
markdown1N4466
Microchip Tech · Zener Diodes · DO-41
1N4466 from Microchip Tech, 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, indicated by the band on the body; the Zener (1N4466, VZ 11.0 V at IZT 23.0 mA) regulates in reverse breakdown with this terminal positive. |
| 2 | A | passive | Anode, the axial lead opposite the banded end; forward voltage is max 1.0 V at 200 mA and 1.5 V at 1.0 A. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Microchip Tech |
| 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 | VZ | -5 | 5 | % | Standard tolerance, no suffix | 1 | |
| Maximum dynamic impedance | ZZT | 6 | Ohms | @ IZT | 3 | ||
| Maximum knee impedance | ZZK | 550 | Ohms | @ IZK = 0.25 mA | 3 | ||
| Maximum reverse current | IR | 0.3 | µA | @ VR = 8.80 V | 3 | ||
| Maximum continuous current | IZM | 130 | mA | Note 1: see Maximum Ratings for PD temperature conditions | 3 | ||
| Surge current | IZSM | 1.3 | Amps | @ 8.3 ms square wave | 3 | ||
| Forward voltage | VF | 1 | V | @ 200 mA | 1 | ||
| Forward voltage | VF | 1.5 | V | @ 1.0 A | 1 | ||
| Junction and storage temperature | TJ & TSTG | -65 | 175 | °C | TA = 25 °C unless otherwise specified | 1 | |
| Steady state power dissipation | PD | 1.5 | W | TL = +112 °C, L = .375 inch (9.53 mm) | 1 | ||
| Solder temperature | TSP | 260 | °C | @ 10 s | 1 | ||
| Thermal resistance junction-to-lead | RӨJL | 42 | °C/W | @ .375 inch (9.52 mm) from body | 1 | ||
| Nominal zener voltage | VZ | 11 | Volts | @ IZT = 23.0 mA | 3 | ||
| Test current | IZT | 23 | mA | 3 |
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 | copper | tin | • TERMINALS: Tin/lead (Sn/Pb) or RoHS compliant matte/tin (commercial grade only) over copper. | 2 |
CAD (KiCad official)
- Symbol:
1N4466 - 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: Microchip Tech datasheet (6 pp, sha256
a3731fedc73f168e, retrieved 2026-10-31, 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).