component
BZA856A
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Nexperia ESD Protection Devices, SOT-353. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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BZA856A
Nexperia · ESD Protection Devices · SOT-353
BZA856A from Nexperia, in a SOT-353. 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 1 | passive | Cathode of diode 1 (protected line 1); BZA856A working voltage VZ 5.32 to 5.88 V at IZ = 1 mA. |
| 2 | common anode | passive | Common anode of all four diodes, connected to ground (GND) in the application circuits. |
| 3 | cathode 2 | passive | Cathode of diode 2 (protected line 2); BZA856A working voltage VZ 5.32 to 5.88 V at IZ = 1 mA. |
| 4 | cathode 3 | passive | Cathode of diode 3 (protected line 3); BZA856A working voltage VZ 5.32 to 5.88 V at IZ = 1 mA. |
| 5 | cathode 4 | passive | Cathode of diode 4 (protected line 4); BZA856A working voltage VZ 5.32 to 5.88 V at IZ = 1 mA. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Nexperia |
| Package | SOT-353 |
| Category | Circuit Protection |
| Pins | 5 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| IF continuous forward current | IF | 200 | mA | Tamb = 25 °C | 4 | ||
| IFSM non-repetitive peak forward current | IFSM | 3.75 | A | tp = 1 ms; square pulse | 4 | ||
| Ptot total power dissipation | Ptot | 335 | mW | Tamb = 25 °C | 4 | ||
| PZSM non repetitive peak reverse power dissipation (BZA856A) | PZSM | 24 | W | square pulse; tp = 1 ms; see Fig.3 | 4 | ||
| Storage temperature | Tstg | -65 | 150 | °C | 4 | ||
| Junction temperature | Tj | 150 | °C | 4 | |||
| Thermal resistance from junction to ambient | Rth j-a | 370 | K/W | all diodes loaded | 4 | ||
| VF forward voltage | VF | 1.3 | V | IF = 200 mA | 5 | ||
| IR reverse current (BZA856A) | IR | 2000 | nA | VR = 3 V | 5 | ||
| VZ working voltage (BZA856A) | VZ | 5.32 | 5.6 | 5.88 | V | IZ = 1 mA | 5 |
| rdiff differential resistance (BZA856A) | rdiff | 400 | Ω | IZ = 1 mA | 5 | ||
| Cd diode capacitance (BZA856A) | Cd | 240 | pF | f = 1 MHz; VR = 0 | 5 | ||
| IZSM non-repetitive peak reverse current (BZA856A) | IZSM | 3.2 | A | tp = 1 ms; Tamb = 25 °C | 5 |
CAD (KiCad official)
- Symbol:
BZA856A - Footprint:
Package_TO_SOT_SMD:SOT-353_SC-70-5 - 3D model: SOT-353 (KiCad packages3D, STEP)
- 3D model files:
bza856a-etched.step/bza856a-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);bza856a.step/bza856a.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Nexperia datasheet (12 pp, sha256
d4601ccd4cb48018, retrieved 2026-11-07, 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).
# BZA856A
**Nexperia** · ESD Protection Devices · SOT-353
BZA856A from Nexperia, in a SOT-353. 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 1 | passive | Cathode of diode 1 (protected line 1); BZA856A working voltage VZ 5.32 to 5.88 V at IZ = 1 mA. |
| 2 | common anode | passive | Common anode of all four diodes, connected to ground (GND) in the application circuits. |
| 3 | cathode 2 | passive | Cathode of diode 2 (protected line 2); BZA856A working voltage VZ 5.32 to 5.88 V at IZ = 1 mA. |
| 4 | cathode 3 | passive | Cathode of diode 3 (protected line 3); BZA856A working voltage VZ 5.32 to 5.88 V at IZ = 1 mA. |
| 5 | cathode 4 | passive | Cathode of diode 4 (protected line 4); BZA856A working voltage VZ 5.32 to 5.88 V at IZ = 1 mA. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Nexperia |
| Package | SOT-353 |
| Category | Circuit Protection |
| Pins | 5 |
## Electrical characteristics
Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| IF continuous forward current | IF | | | 200 | mA | Tamb = 25 °C | 4 |
| IFSM non-repetitive peak forward current | IFSM | | | 3.75 | A | tp = 1 ms; square pulse | 4 |
| Ptot total power dissipation | Ptot | | | 335 | mW | Tamb = 25 °C | 4 |
| PZSM non repetitive peak reverse power dissipation (BZA856A) | PZSM | | | 24 | W | square pulse; tp = 1 ms; see Fig.3 | 4 |
| Storage temperature | Tstg | -65 | | 150 | °C | | 4 |
| Junction temperature | Tj | | | 150 | °C | | 4 |
| Thermal resistance from junction to ambient | Rth j-a | | | 370 | K/W | all diodes loaded | 4 |
| VF forward voltage | VF | | | 1.3 | V | IF = 200 mA | 5 |
| IR reverse current (BZA856A) | IR | | | 2000 | nA | VR = 3 V | 5 |
| VZ working voltage (BZA856A) | VZ | 5.32 | 5.6 | 5.88 | V | IZ = 1 mA | 5 |
| rdiff differential resistance (BZA856A) | rdiff | | | 400 | Ω | IZ = 1 mA | 5 |
| Cd diode capacitance (BZA856A) | Cd | | | 240 | pF | f = 1 MHz; VR = 0 | 5 |
| IZSM non-repetitive peak reverse current (BZA856A) | IZSM | | | 3.2 | A | tp = 1 ms; Tamb = 25 °C | 5 |
## CAD (KiCad official)
- Symbol: `BZA856A`
- Footprint: `Package_TO_SOT_SMD:SOT-353_SC-70-5`
- 3D model: SOT-353 (KiCad packages3D, STEP)
- 3D model files: `bza856a-etched.step` / `bza856a-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `bza856a.step` / `bza856a.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/BZA856A.pdf) (12 pp, sha256 `d4601ccd4cb48018`, retrieved 2026-11-07, tier: manufacturer)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (text), consensus `claude-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).
[Datasheet PDF](docs/bza856a-datasheet.pdf)