component
SZ1SMA5923BT3G
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
markdownSZ1SMA5923BT3G
onsemi · Zener Diodes · SMA
SZ1SMA5923BT3G 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 of the zener diode, marked by the polarity band/notch; operates at positive voltage relative to the anode in reverse zener regulation (VZ 7.79 V min, 8.2 V nom, 8.61 V max at IZT = 45.7 mA for the 5923B). |
| 2 | ANODE | passive | Anode of the zener diode; forward voltage VF is 1.2 V max at IF = 200 mA. |
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 | 7.79 | 8.2 | 8.61 | V | @ IZT = 45.7 mA, TA = 25°C | 2 |
| Test Current | IZT | 45.7 | mA | TA = 25°C | 2 | ||
| Maximum Zener Impedance | ZZT | 3.5 | Ω | @ IZT = 45.7 mA | 2 | ||
| Maximum Zener Impedance | ZZK | 400 | Ω | @ IZK = 0.5 mA | 2 | ||
| Reverse Leakage Current | IR | 2.5 | A | @ VR = 6.5 V | 2 | ||
| Forward Voltage | VF | 1.2 | V | @ IF = 200 mA, all types | 2 | ||
| Maximum DC Zener Current | IZM | 183 | mA | 2 | |||
| DC Power Dissipation | PD | 1.5 | W | TL = 75°C, zero lead length, 1 in square copper pad FR-4 | 1 | ||
| Derate above 75°C | 20 | mW/°C | TL > 75°C | 1 | |||
| DC Power Dissipation | PD | 0.5 | W | TA = 25°C, FR-4 board, minimum recommended footprint | 1 | ||
| Derate above 25°C | 4 | mW/°C | TA > 25°C | 1 | |||
| Operating and Storage Temperature Range | TJ, Tstg | -65 | 150 | °C | 1 | ||
| Thermal Resistance, Junction-to-Lead | RθJL | 50 | °C/W | 1 in square copper pad, FR-4 board | 1 | ||
| Thermal Resistance, Junction-to-Ambient | RθJA | 250 | °C/W | FR-4 board, minimum recommended footprint | 1 | ||
| Zener Voltage Tolerance | VZ | -5 | 5 | % | type number indicates tolerance of ±5% | 2 |
CAD (KiCad official)
- Symbol:
SZ1SMA5923BT3G - Footprint:
Diode_SMD:D_SMA - 3D model: SMA (KiCad packages3D, STEP)
- 3D model files:
sz1sma5923bt3g-etched.step/sz1sma5923bt3g-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);sz1sma5923bt3g.step/sz1sma5923bt3g.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: onsemi datasheet (6 pp, sha256
519ac27d44cbe205, 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).