component
1N5349BRLG
Public Made by Adomby adom
onsemi Zener Diodes, DO-27. 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
markdown1N5349BRLG
onsemi · Zener Diodes · DO-27
1N5349BRLG from onsemi, in a DO-27. 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 | onsemi |
| Package | DO-27 |
| 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 12 V, 5% type) | VZ | 11.4 | 12 | 12.6 | V | @ IZT = 100 mA; TA = 25°C; IZ applied 40 ±10 ms before reading | 3 |
| Maximum zener impedance | ZZT | 2.5 | Ω | @ IZT = 100 mA | 3 | ||
| Maximum zener impedance | ZZK | 125 | Ω | @ IZK = 1 mA | 3 | ||
| Reverse leakage current | IR | 2 | µA | @ VR = 9.1 V | 3 | ||
| Maximum surge current | IR | 7.5 | A | TA = 25°C; non-repetitive square wave, PW = 8.3 ms (Note 9) | 3 | ||
| Maximum DC zener current | IZM | 395 | mA | TL = 25°C at 3/8 in maximum from device body (Note 11); applies to 5% B-suffix | 3 | ||
| Forward voltage | VF | 1.2 | V | @ IF = 1.0 A (for all types) | 2 | ||
| Max steady state power dissipation | PD | 5 | W | TL = 25°C, lead length 3/8 in | 1 | ||
| Operating and storage temperature range | TJ, Tstg | -65 | 200 | °C | Note 1: DC max 150°C; up to 200°C for pulsed low duty cycle or non-repetitive | 1 | |
| Junction-to-lead thermal resistance | θJL | 25 | °C/W | Lead length 3/8 in | 1 |
CAD (KiCad official)
- Symbol:
1N5349BRLG - Footprint:
Diode_THT:D_DO-27_P15.24mm_Horizontal - 3D model: DO-27 (KiCad packages3D, STEP)
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: onsemi datasheet (7 pp, sha256
3f6fc7bbfc757336, retrieved 2026-10-21, tier: manufacturer) - 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).