# BZV49-C11

**Nexperia** · Zener Diodes · SOT-89-3

BZV49-C11 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 terminal of the BZV49-C11 voltage regulator diode (11 V nominal working voltage, VZ 10.4 to 11.6 V at IZtest 5 mA), with 0.4 W...  |
| 2 | cathode | passive | Cathode terminal of the BZV49-C11 voltage regulator diode; the series is rated for total power dissipation of max. 1 W at Tamb = 25 °C and continuous forward current of max. 250 mA. |
| 3 | anode | passive | Anode terminal of the BZV49-C11 voltage regulator diode, paired with pin 1 as the second anode lead of the SOT89 package. |

## 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 |
|---|---|---|---|---|---|---|---|
| Working voltage (Zener voltage) | VZ | 10.4 |  | 11.6 | V | at IZtest = 5 mA; Tj = 25 °C | 5 |
| Differential resistance | rdif |  | 10 | 20 | Ω | at IZtest = 5 mA; Tj = 25 °C | 5 |
| Temperature coefficient | SZ | 5.4 | 7.4 | 9 | mV/K | at IZtest = 5 mA; Tj = 25 °C | 5 |
| Diode capacitance | Cd |  |  | 85 | pF | at f = 1 MHz; VR = 0 V | 5 |
| Reverse current | IR |  |  | 0.1 | μA | at VR = 8.0 V | 5 |
| Non-repetitive peak reverse current | IZSM |  |  | 2.5 | A | tp = 100 μs; square wave; Tj = 25 °C prior to surge | 5 |
| Continuous forward current | IF |  |  | 250 | mA |  | 4 |
| Total power dissipation | Ptot |  |  | 1 | W | Tamb = 25 °C; note 1 (device mounted on ceramic substrate, area 2.5 cm2, thickness 0.7 mm) | 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 |
| 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 (device mounted on ceramic substrate, area 2.5 cm2, thickness 0.7 mm) | 7 |
| Voltage tolerance (E24 series) |  | -5 |  | 5 | % | approx.; E24 tolerance series, applies to the nominal working voltage | 3 |

## CAD (KiCad official)

- Symbol: `BZV49-C11`
- Footprint: `Package_TO_SOT_SMD:SOT-89-3`
- 3D model: SOT-89-3 (KiCad packages3D, STEP)
- 3D model files: `bzv49-c11-etched.step` / `bzv49-c11-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `bzv49-c11.step` / `bzv49-c11.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/8588914750101471232) (11 pp, sha256 `d11cb65034cc8cae`, retrieved 2026-10-19, tier: lcsc)
- **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-c11-datasheet.pdf)