component
BZX84-A43
Public Made by Adomby adom
Nexperia Zener Diodes, SOT-23(TO-236AB). 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
markdownBZX84-A43
Nexperia · Zener Diodes · SOT-23(TO-236AB)
BZX84-A43 from Nexperia, in a SOT-23(TO-236AB). 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 | A | passive | Anode of the voltage regulator diode. |
| 2 | n.c. | unconnected | Not connected. |
| 3 | K | passive | Cathode of the voltage regulator diode (soldering point of cathode tab). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Nexperia |
| Package | SOT-23(TO-236AB) |
| Category | Diodes |
| Pins | 3 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Working voltage (BZX84-A43) | VZ | 42.57 | 43.43 | V | IZ = 2 mA, Tj = 25 °C | 7 | |
| Maximum differential resistance | rdif | 375 | Ω | IZ = 0.5 mA, Tj = 25 °C | 7 | ||
| Maximum differential resistance | rdif | 150 | Ω | IZ = 2 mA, Tj = 25 °C | 7 | ||
| Reverse current | IR | 0.05 | µA | VR = 30.1 V, Tj = 25 °C | 7 | ||
| Temperature coefficient | SZ | 37.6 | 46.6 | mV/K | IZ = 2 mA | 7 | |
| Diode capacitance | Cd | 40 | pF | f = 1 MHz; VR = 0 V | 7 | ||
| Non-repetitive peak reverse current | IZSM | 0.6 | A | tp = 100 μs; square wave; Tj = 25 °C | 7 | ||
| Forward voltage | VF | 0.9 | V | IF = 10 mA, pulse test tp ≤ 100 μs; δ ≤ 0.02 | 4 | ||
| Forward current | IF | 200 | mA | 4 | |||
| Non-repetitive peak reverse power dissipation | PZSM | 40 | W | tp = 100 μs; square wave; Tj = 25 °C prior to surge | 4 | ||
| Total power dissipation | Ptot | 250 | mW | Tamb ≤ 25 °C | 4 | ||
| Junction temperature | Tj | 150 | °C | 4 | |||
| Ambient temperature | Tamb | -55 | 150 | °C | 4 | ||
| Storage temperature | Tstg | -65 | 150 | °C | 4 | ||
| Thermal resistance junction to ambient | Rth(j-a) | 500 | K/W | in free air | 4 | ||
| Thermal resistance junction to solder point | Rth(j-sp) | 330 | K/W | 4 | |||
| Tolerance of working voltage (A series) | -1 | 1 | % | BZX84-A, E24 | 1 |
CAD (KiCad official)
- Symbol:
BZX84-A43 - Footprint:
Package_TO_SOT_SMD:SOT-23 - 3D model: SOT-23(TO-236AB) (KiCad packages3D, STEP)
- 3D model files:
bzx84-a43-etched.step/bzx84-a43-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);bzx84-a43.step/bzx84-a43.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Nexperia datasheet (14 pp, sha256
e6278027e055c1b0, retrieved 2026-10-23, 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).