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BZV49-C27
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Nexperia Zener Diodes, SOT-89-3. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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BZV49-C27
Nexperia · Zener Diodes · SOT-89-3
BZV49-C27 from Nexperia, in a SOT-89-3. 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 | anode | passive | Anode of the voltage regulator diode; the datasheet's pinning table gives no pin-specific limits for this lead, and the total-series ratings (for example Ptot max. 1 W) apply. |
| 2 | cathode | passive | Cathode of the voltage regulator diode; the datasheet's pinning table gives no pin-specific limits for this lead, and the total-series ratings (for example IF max. 250 mA) apply. |
| 3 | anode | passive | Anode of the voltage regulator diode (second anode lead); the datasheet's pinning table gives no pin-specific limits for this lead, and the total-series ratings (for example Tj max. 150 °C) apply. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Nexperia |
| Package | SOT-89-3 |
| 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 |
|---|---|---|---|---|---|---|---|
| Forward current, continuous | IF | 250 | mA | 4 | |||
| Non-repetitive peak reverse current | IZSM | 1 | A | tp = 100 μs; Tamb = 25 °C | 6 | ||
| Total power dissipation | Ptot | 1 | W | Tamb = 25 °C; note 1 | 4 | ||
| Non-repetitive peak reverse power dissipation | PZSM | 40 | W | tp = 100 μs; square wave; Tj = 25 °C prior to surge; see Fig.2 | 4 | ||
| Storage temperature | Tstg | -65 | 150 | °C | 4 | ||
| Junction temperature | Tj | 150 | °C | 4 | |||
| Forward voltage | VF | 1 | V | IF = 50 mA; see Fig.3 | 4 | ||
| Working voltage | VZ | 25.1 | 28.9 | V | at IZtest = 2 mA; Tj = 25 °C | 6 | |
| Differential resistance | rdif | 25 | 80 | Ω | at IZtest = 2 mA | 6 | |
| Temperature coefficient | SZ | 21.4 | 23.4 | 25.3 | mV/K | at IZtest = 2 mA; see Figs 4 and 5 | 6 |
| Reverse current | IR | 0.05 | μA | at VR = 18.9 V | 6 | ||
| Thermal resistance, junction to tie-point | Rth(j-tp) | 15 | K/W | 7 | |||
| Thermal resistance, junction to ambient | Rth(j-a) | 125 | K/W | note 1 | 7 |
CAD (KiCad official)
- Symbol:
BZV49-C27 - Footprint:
Package_TO_SOT_SMD:SOT-89-3 - 3D model: SOT-89-3 (KiCad packages3D, STEP)
- 3D model files:
bzv49-c27-etched.step/bzv49-c27-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);bzv49-c27.step/bzv49-c27.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Nexperia datasheet (11 pp, sha256
d11cb65034cc8cae, retrieved 2026-10-30, tier: manufacturer) - 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).
# BZV49-C27
**Nexperia** · Zener Diodes · SOT-89-3
BZV49-C27 from Nexperia, in a SOT-89-3. 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 | anode | passive | Anode of the voltage regulator diode; the datasheet's pinning table gives no pin-specific limits for this lead, and the total-series ratings (for example Ptot max. 1 W) apply. |
| 2 | cathode | passive | Cathode of the voltage regulator diode; the datasheet's pinning table gives no pin-specific limits for this lead, and the total-series ratings (for example IF max. 250 mA) apply. |
| 3 | anode | passive | Anode of the voltage regulator diode (second anode lead); the datasheet's pinning table gives no pin-specific limits for this lead, and the total-series ratings (for example Tj max. 150 °C) apply. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Nexperia |
| Package | SOT-89-3 |
| 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 |
|---|---|---|---|---|---|---|---|
| Forward current, continuous | IF | | | 250 | mA | | 4 |
| Non-repetitive peak reverse current | IZSM | | | 1 | A | tp = 100 μs; Tamb = 25 °C | 6 |
| Total power dissipation | Ptot | | | 1 | W | Tamb = 25 °C; note 1 | 4 |
| Non-repetitive peak reverse power dissipation | PZSM | | | 40 | W | tp = 100 μs; square wave; Tj = 25 °C prior to surge; see Fig.2 | 4 |
| Storage temperature | Tstg | -65 | | 150 | °C | | 4 |
| Junction temperature | Tj | | | 150 | °C | | 4 |
| Forward voltage | VF | | | 1 | V | IF = 50 mA; see Fig.3 | 4 |
| Working voltage | VZ | 25.1 | | 28.9 | V | at IZtest = 2 mA; Tj = 25 °C | 6 |
| Differential resistance | rdif | | 25 | 80 | Ω | at IZtest = 2 mA | 6 |
| Temperature coefficient | SZ | 21.4 | 23.4 | 25.3 | mV/K | at IZtest = 2 mA; see Figs 4 and 5 | 6 |
| Reverse current | IR | | | 0.05 | μA | at VR = 18.9 V | 6 |
| Thermal resistance, junction to tie-point | Rth(j-tp) | | 15 | | K/W | | 7 |
| Thermal resistance, junction to ambient | Rth(j-a) | | 125 | | K/W | note 1 | 7 |
## CAD (KiCad official)
- Symbol: `BZV49-C27`
- Footprint: `Package_TO_SOT_SMD:SOT-89-3`
- 3D model: SOT-89-3 (KiCad packages3D, STEP)
- 3D model files: `bzv49-c27-etched.step` / `bzv49-c27-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `bzv49-c27.step` / `bzv49-c27.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/BZV49-C27.pdf) (11 pp, sha256 `d11cb65034cc8cae`, retrieved 2026-10-30, tier: manufacturer)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-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/bzv49-c27-datasheet.pdf)