component
BZX8450-C4V7R
Public Made by Adomby adom
Nexperia Zener Diodes, 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
markdownBZX8450-C4V7R
Nexperia · Zener Diodes · TO-236AB
BZX8450-C4V7R from Nexperia, in a 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 low-current voltage regulator diode; the datasheet states no additional electrical limits for this pin. |
| 2 | n.c. | unconnected | Not connected; the datasheet specifies no electrical function for this pin. |
| 3 | K | passive | Cathode of the regulator diode; the junction-to-solder-point thermal resistance (Rth(j-sp) 330 K/W) is specified at this cathode tab. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Nexperia |
| Package | 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 (C4V7) | VZ | 4.47 | 4.94 | V | IZ = 50 µA | 4 | |
| Differential resistance (C4V7) | rdiff | 600 | Ω | IZ = 50 µA | 4 | ||
| Differential resistance (C4V7) | rdiff | 80 | Ω | IZ = 1 mA | 4 | ||
| Reverse current (C4V7) | IR | 5 | µA | VR = 3.0 V | 4 | ||
| Temperature coefficient (C4V7) | SZ | -2.7 | 2.5 | mV/K | Tj = 25 °C unless otherwise specified | 4 | |
| Diode capacitance (C4V7) | Cd | 140 | pF | f = 1 MHz; VR = 0 V | 4 | ||
| Forward voltage | VF | 0.9 | V | IF = 10 mA; pulse test tp ≤ 300 µs; δ ≤ 0.02 | 4 | ||
| Tolerance series | -5 | 5 | % | approximately, series tolerance (Features) | 1 | ||
| Forward current | IF | 200 | mA | 3 | |||
| Non-repetitive peak reverse power dissipation | PZSM | 40 | W | tp = 100 µs; square wave; Tj = 25 °C; prior to surge | 3 | ||
| Total power dissipation | Ptot | 250 | mW | Tamb ≤ 25 °C; FR4 PCB, single sided copper, standard footprint | 3 | ||
| Junction temperature | Tj | 150 | °C | 3 | |||
| Ambient temperature | Tamb | -55 | 150 | °C | 3 | ||
| Storage temperature | Tstg | -65 | 150 | °C | 3 | ||
| Thermal resistance from junction to ambient | Rth(j-a) | 500 | K/W | in free air; FR4 PCB, single sided copper, standard footprint | 3 | ||
| Thermal resistance from junction to solder point | Rth(j-sp) | 330 | K/W | soldering point of cathode tab | 3 |
CAD (KiCad official)
- Symbol:
BZX8450-C4V7R - Footprint:
Package_TO_SOT_SMD:SOT-23 - 3D model: TO-236AB (KiCad packages3D, STEP)
- 3D model files:
bzx8450-c4v7r-etched.step/bzx8450-c4v7r-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);bzx8450-c4v7r.step/bzx8450-c4v7r.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Nexperia datasheet (10 pp, sha256
307a5e76b2c8ee61, retrieved 2026-10-16, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-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).