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BZX84-A27
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Nexperia Zener Diodes, SOT-23(TO-236AB). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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BZX84-A27
Nexperia · Zener Diodes · SOT-23(TO-236AB)
BZX84-A27 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; the pinning table lists it as pin 1 of the SOT23 (TO-236AB) package. |
| 2 | n.c. | unconnected | Not connected; the pinning table marks this pin as not connected. |
| 3 | K | passive | Cathode of the voltage regulator diode; the pinning table lists it as pin 3 of the SOT23 (TO-236AB) package. |
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 VZ min | VZ | 26.73 | V | IZ = 2 mA | 7 | ||
| Working voltage VZ max | VZ | 27.27 | V | IZ = 2 mA | 7 | ||
| Working voltage tolerance (BZX84-A, E24 ±1 %) | -1 | 1 | % | 1 | |||
| Ambient temperature | Tamb | -55 | 150 | °C | 4 | ||
| Storage temperature | Tstg | -65 | 150 | °C | 4 | ||
| Temperature coefficient SZ min | SZ | 21.4 | mV/K | IZ = 2 mA | 7 | ||
| Temperature coefficient SZ max | SZ | 25.3 | mV/K | IZ = 2 mA | 7 | ||
| Maximum differential resistance rdif | rdif | 300 | Ω | IZ = 0.5 mA | 7 | ||
| Maximum differential resistance rdif | rdif | 80 | Ω | IZ = 2 mA | 7 | ||
| Reverse current IR | IR | 0.05 | μA | Max VR 18.9 V | 7 | ||
| Diode capacitance Cd | Cd | 50 | pF | f = 1 MHz; VR = 0 V | 7 | ||
| Non-repetitive peak reverse current IZSM | IZSM | 1 | 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; device mounted on FR4 PCB | 4 | ||
| Junction temperature | Tj | 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 |
CAD (KiCad official)
- Symbol:
BZX84-A27 - Footprint:
Package_TO_SOT_SMD:SOT-23 - 3D model: SOT-23(TO-236AB) (KiCad packages3D, STEP)
- 3D model files:
bzx84-a27-etched.step/bzx84-a27-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);bzx84-a27.step/bzx84-a27.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Nexperia datasheet (14 pp, sha256
e6278027e055c1b0, retrieved 2026-10-26, tier: manufacturer) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusoff(skipped (clean text read)), 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).
# BZX84-A27
**Nexperia** · Zener Diodes · SOT-23(TO-236AB)
BZX84-A27 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; the pinning table lists it as pin 1 of the SOT23 (TO-236AB) package. |
| 2 | n.c. | unconnected | Not connected; the pinning table marks this pin as not connected. |
| 3 | K | passive | Cathode of the voltage regulator diode; the pinning table lists it as pin 3 of the SOT23 (TO-236AB) package. |
## 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 VZ min | VZ | 26.73 | | | V | IZ = 2 mA | 7 |
| Working voltage VZ max | VZ | | | 27.27 | V | IZ = 2 mA | 7 |
| Working voltage tolerance (BZX84-A, E24 ±1 %) | | -1 | | 1 | % | | 1 |
| Ambient temperature | Tamb | -55 | | 150 | °C | | 4 |
| Storage temperature | Tstg | -65 | | 150 | °C | | 4 |
| Temperature coefficient SZ min | SZ | 21.4 | | | mV/K | IZ = 2 mA | 7 |
| Temperature coefficient SZ max | SZ | | | 25.3 | mV/K | IZ = 2 mA | 7 |
| Maximum differential resistance rdif | rdif | | | 300 | Ω | IZ = 0.5 mA | 7 |
| Maximum differential resistance rdif | rdif | | | 80 | Ω | IZ = 2 mA | 7 |
| Reverse current IR | IR | | | 0.05 | μA | Max VR 18.9 V | 7 |
| Diode capacitance Cd | Cd | | | 50 | pF | f = 1 MHz; VR = 0 V | 7 |
| Non-repetitive peak reverse current IZSM | IZSM | | | 1 | 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; device mounted on FR4 PCB | 4 |
| Junction temperature | Tj | | | 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 |
## CAD (KiCad official)
- Symbol: `BZX84-A27`
- Footprint: `Package_TO_SOT_SMD:SOT-23`
- 3D model: SOT-23(TO-236AB) (KiCad packages3D, STEP)
- 3D model files: `bzx84-a27-etched.step` / `bzx84-a27-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `bzx84-a27.step` / `bzx84-a27.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [Nexperia datasheet](https://assets.nexperia.com/documents/data-sheet/BZX84-A27.pdf) (14 pp, sha256 `e6278027e055c1b0`, retrieved 2026-10-26, tier: manufacturer)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (text), consensus `off` (skipped (clean text read)), 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).
[Datasheet PDF](docs/bzx84-a27-datasheet.pdf)