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1N5408 3A Rectifier Diode
Public Unreviewedby Ray
3 A, 1000 V general-purpose glass-passivated rectifier in axial DO-201AD.
3D Model
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markdown1N5408
Diodes Incorporated · Rectifier Diode · DO-201AD
The 1N5408 is a 3 A general-purpose rectifier rated to 1000 V reverse voltage, part of the 1N5400 glass-passivated series. Its axial DO-201AD package suits through-hole power supplies, freewheeling, and general rectification where high reverse voltage is needed.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | K | passive | Cathode terminal of the rectifier diode, identified by the printed band on the DO-201AD case. Blocks reverse current up to VRRM = 1000V for the 1N5408G variant. |
| 2 | A | passive | Anode terminal of the rectifier diode. Conventional forward current flows from anode to cathode when VF > ~0.7V (typ 1.1V at IF = 3.0A). |
Key specifications
| Parameter | Value |
|---|---|
| Type | General-purpose rectifier |
| Average forward current (IO) | 3 A |
| Peak repetitive reverse voltage (VRRM) | 1000 V |
| Forward voltage (VF) | 1.0 V at 3 A |
| Peak surge current (IFSM) | 200 A |
| Reverse recovery | Standard (not fast) |
| Operating temperature | -65 C to 150 C |
Ordering variants
1N5408G-B1N5408G-T
CAD (KiCad official)
- Symbol:
1n5408.kicad_sym - Footprint:
1n5408.kicad_mod - 3D model: Axial DO-201AD body from KiCad
Diode_THT/D_DO-201AD_P15.24mm_Horizontal.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Diodes Incorporated datasheet (3 pp, sha256
a8a9a95573279586, retrieved 2026-08-17, tier: manufacturer) - Extractor:
ds2sf(Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate. - CAD: KiCad official libraries (CC-BY-SA 4.0).