component
BZB784-C3V3
Public Made by Adomby adom
Nexperia Zener Diodes, SOT-323(SC-70). Pinout reviewed by a person against the datasheet, KiCad symbol/footprint/3D.
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BZB784-C3V3
Nexperia · Zener Diodes · SOT-323(SC-70)
BZB784-C3V3 from Nexperia, in a SOT-323(SC-70). 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 one of the two voltage regulator diodes; for the BZB784-C3V3 the working voltage VZ is 3.1 V min to 3.5 V max at IZ = 5 mA. |
| 2 | cathode | passive | Cathode of the second voltage regulator diode; for the BZB784-C3V3 the working voltage VZ is 3.1 V min to 3.5 V max at IZ = 5 mA. |
| 3 | common anode | passive | Common anode shared by both diodes; total power dissipation is limited to max. 350 mW at Tamb = 25 °C with two diodes loaded. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Nexperia |
| Package | SOT-323(SC-70) |
| 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 |
|---|---|---|---|---|---|---|---|
| Continuous forward current | IF | 200 | mA | 3 | |||
| Non-repetitive peak reverse current (BZB784-C3V3, Table 1) | IZSM | 6 | A | tp = 100 μs; square wave; Tamb = 25 °C; prior to surge | 5 | ||
| Total power dissipation, 2 diodes loaded | Ptot | 350 | mW | Tamb = 25 °C; 2 diodes loaded; note 1 | 3 | ||
| Total power dissipation, 1 diode loaded | Ptot | 180 | mW | Tamb = 25 °C; 1 diode loaded | 3 | ||
| Non-repetitive peak reverse dissipation | PZSM | 40 | W | tp = 100 μs; square wave; Tamb = 25 °C; prior to surge | 3 | ||
| Storage temperature | Tstg | -65 | 150 | °C | 3 | ||
| Junction temperature | Tj | 150 | °C | 3 | |||
| Thermal resistance junction to soldering point, 2 diodes loaded | Rth j-s | 140 | K/W | 2 diodes loaded; note 1 | 4 | ||
| Thermal resistance junction to soldering point, 1 diode loaded | Rth j-s | 265 | K/W | 1 diode loaded; note 1 | 4 | ||
| Thermal resistance junction to ambient, 2 diodes loaded | Rth j-a | 355 | K/W | 2 diodes loaded; note 2 | 4 | ||
| Thermal resistance junction to ambient, 1 diode loaded | Rth j-a | 680 | K/W | 1 diode loaded; note 2 | 4 | ||
| Forward voltage | VF | 0.9 | V | IF = 10 mA; see Fig.2 | 4 | ||
| Reverse current (BZB784-C3V3) | IR | 5 | μA | VR = 1 V | 4 | ||
| Working voltage (BZB784-C3V3) | VZ | 3.1 | 3.5 | V | at IZ = 5 mA | 5 | |
| Working voltage tolerance (approx. 5%) | Tol. | -5 | 5 | % | approx.; printed as ≈5% in Table 1 | 5 | |
| Differential resistance at IZ = 1 mA | rdif | 350 | 600 | Ω | at IZ = 1 mA | 5 | |
| Differential resistance at IZ = 5 mA | rdif | 85 | 95 | Ω | at IZ = 5 mA | 5 | |
| Diode capacitance | Cd | 450 | pF | at f = 1 MHz; VR = 0 V | 5 | ||
| Temperature coefficient of working voltage | SZ | -1.8 | mV/K | at IZtest = 5 mA (see Figs 3 and 4) | 5 |
CAD (KiCad official)
- Symbol:
BZB784-C3V3 - Footprint:
Package_TO_SOT_SMD:SOT-323_SC-70 - 3D model: SOT-323(SC-70) (KiCad packages3D, STEP)
- 3D model files:
bzb784-c3v3-etched.step/bzb784-c3v3-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);bzb784-c3v3.step/bzb784-c3v3.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Nexperia datasheet (9 pp, sha256
3f7233f6a26109d3, retrieved 2026-10-20, tier: lcsc) - Extractor:
ds2sf(Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate. - CAD: KiCad official libraries (CC-BY-SA 4.0).
# BZB784-C3V3
**Nexperia** · Zener Diodes · SOT-323(SC-70)
BZB784-C3V3 from Nexperia, in a SOT-323(SC-70). 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 one of the two voltage regulator diodes; for the BZB784-C3V3 the working voltage VZ is 3.1 V min to 3.5 V max at IZ = 5 mA. |
| 2 | cathode | passive | Cathode of the second voltage regulator diode; for the BZB784-C3V3 the working voltage VZ is 3.1 V min to 3.5 V max at IZ = 5 mA. |
| 3 | common anode | passive | Common anode shared by both diodes; total power dissipation is limited to max. 350 mW at Tamb = 25 °C with two diodes loaded. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Nexperia |
| Package | SOT-323(SC-70) |
| 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 |
|---|---|---|---|---|---|---|---|
| Continuous forward current | IF | | | 200 | mA | | 3 |
| Non-repetitive peak reverse current (BZB784-C3V3, Table 1) | IZSM | | | 6 | A | tp = 100 μs; square wave; Tamb = 25 °C; prior to surge | 5 |
| Total power dissipation, 2 diodes loaded | Ptot | | | 350 | mW | Tamb = 25 °C; 2 diodes loaded; note 1 | 3 |
| Total power dissipation, 1 diode loaded | Ptot | | | 180 | mW | Tamb = 25 °C; 1 diode loaded | 3 |
| Non-repetitive peak reverse dissipation | PZSM | | | 40 | W | tp = 100 μs; square wave; Tamb = 25 °C; prior to surge | 3 |
| Storage temperature | Tstg | -65 | | 150 | °C | | 3 |
| Junction temperature | Tj | | | 150 | °C | | 3 |
| Thermal resistance junction to soldering point, 2 diodes loaded | Rth j-s | | | 140 | K/W | 2 diodes loaded; note 1 | 4 |
| Thermal resistance junction to soldering point, 1 diode loaded | Rth j-s | | | 265 | K/W | 1 diode loaded; note 1 | 4 |
| Thermal resistance junction to ambient, 2 diodes loaded | Rth j-a | | | 355 | K/W | 2 diodes loaded; note 2 | 4 |
| Thermal resistance junction to ambient, 1 diode loaded | Rth j-a | | | 680 | K/W | 1 diode loaded; note 2 | 4 |
| Forward voltage | VF | | | 0.9 | V | IF = 10 mA; see Fig.2 | 4 |
| Reverse current (BZB784-C3V3) | IR | | | 5 | μA | VR = 1 V | 4 |
| Working voltage (BZB784-C3V3) | VZ | 3.1 | | 3.5 | V | at IZ = 5 mA | 5 |
| Working voltage tolerance (approx. 5%) | Tol. | -5 | | 5 | % | approx.; printed as ≈5% in Table 1 | 5 |
| Differential resistance at IZ = 1 mA | rdif | | 350 | 600 | Ω | at IZ = 1 mA | 5 |
| Differential resistance at IZ = 5 mA | rdif | | 85 | 95 | Ω | at IZ = 5 mA | 5 |
| Diode capacitance | Cd | | | 450 | pF | at f = 1 MHz; VR = 0 V | 5 |
| Temperature coefficient of working voltage | SZ | | -1.8 | | mV/K | at IZtest = 5 mA (see Figs 3 and 4) | 5 |
## CAD (KiCad official)
- Symbol: `BZB784-C3V3`
- Footprint: `Package_TO_SOT_SMD:SOT-323_SC-70`
- 3D model: SOT-323(SC-70) (KiCad packages3D, STEP)
- 3D model files: `bzb784-c3v3-etched.step` / `bzb784-c3v3-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `bzb784-c3v3.step` / `bzb784-c3v3.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [Nexperia datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588914267344658432) (9 pp, sha256 `3f7233f6a26109d3`, retrieved 2026-10-20, tier: lcsc)
- **Extractor:** `ds2sf` (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
- **CAD:** KiCad official libraries (CC-BY-SA 4.0).
[Datasheet PDF](docs/bzb784-c3v3-datasheet.pdf)