component
1SMA5919BT3G
Public Made by Adomby adom
onsemi Zener Diodes, SMA. 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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README
markdown1SMA5919BT3G
onsemi · Zener Diodes · SMA
1SMA5919BT3G from onsemi, in a SMA. 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 | CATHODE | passive | Cathode (polarity band) of the 5.6 V nominal zener (5.32-5.88 V at IZT = 66.9 mA); goes positive relative to the anode in zener regulation. |
| 2 | ANODE | passive | Anode of the zener diode; VF = 1.5 V max at IF = 200 mA in forward conduction. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | onsemi |
| Package | SMA |
| 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 | VZ | 5.32 | 5.6 | 5.88 | V | @ IZT, TA = 25C | 2 |
| Test Current | IZT | 66.9 | mA | TA = 25C | 2 | ||
| Maximum Zener Impedance | ZZT | 2 | ohm | @ IZT | 2 | ||
| Maximum Zener Impedance at knee | ZZK | 250 | ohm | @ IZK = 1.0 mA | 2 | ||
| Reverse Leakage Current | IR | 2.5 | uA | @ VR = 3.0 V | 2 | ||
| Maximum DC Zener Current | IZM | 268 | mA(dc) | 2 | |||
| Forward Voltage | VF | 1.5 | V | IF = 200 mA | 2 | ||
| Zener Voltage Tolerance | -5 | 5 | % | type number indicates a tolerance of 5% | 2 | ||
| DC Power Dissipation (lead) | PD | 1.5 | W | TL = 75C, zero lead length, 1 in square copper pad FR-4 | 1 | ||
| Derate above 75C | 20 | mW/C | above 75C | 1 | |||
| DC Power Dissipation (ambient) | PD | 0.5 | W | TA = 25C, FR-4 board, minimum recommended footprint | 1 | ||
| Derate above 25C | 4 | mW/C | above 25C | 1 | |||
| Operating and Storage Temperature Range | TJ, Tstg | -65 | 150 | C | 1 | ||
| Thermal Resistance, Junction-to-Lead | RθJL | 50 | C/W | 1 | |||
| Thermal Resistance, Junction-to-Ambient | RθJA | 250 | C/W | 1 |
CAD (KiCad official)
- Symbol:
1SMA5919BT3G - Footprint:
Diode_SMD:D_SMA - 3D model: SMA (KiCad packages3D, STEP)
- 3D model files:
1sma5919bt3g-etched.step/1sma5919bt3g-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);1sma5919bt3g.step/1sma5919bt3g.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: onsemi datasheet (5 pp, sha256
1ca169f64a35c9ee, retrieved 2026-10-22, 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).