# DZ23C27Q

**Yangzhou Yangjie Elec Tech** · Zener Diodes · SOT-23(TO-236)

DZ23C27Q from Yangzhou Yangjie Elec Tech, in a SOT-23(TO-236). 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 | A1 | passive | Anode of zener diode 1; the symbol on page 1 shows the two diodes sharing a common cathode at pin 3, with each diode rated at VZ 25.1V to 28.9V (27V typ) at 2 mA. |
| 2 | A2 | passive | Anode of zener diode 2; the symbol on page 1 shows the two diodes sharing a common cathode at pin 3, with each diode rated at VZ 25.1V to 28.9V (27V typ) at 2 mA. |
| 3 | K | passive | Common cathode of both zener diodes; power dissipation is 300 mW with a single diode loaded. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Yangzhou Yangjie Elec Tech |
| Package | SOT-23(TO-236) |
| 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 |
|---|---|---|---|---|---|---|---|
| Zener voltage | Vz | 25.1 | 27 | 28.9 | V | Izt = 2 mA | 2 |
| Zener impedance at Izt | Zzt |  |  | 80 | Ω | IZt = 2 mA | 2 |
| Zener impedance at Izk (knee) | Zzk |  |  | 300 | Ω | Izk = 0.5 mA | 2 |
| Reverse leakage current | IR |  |  | 0.1 | μA | VR = 18.9 V | 2 |
| Typical temperature coefficient |  | 21.4 |  | 25.3 | mV/℃ | IZTC = 2 mA | 2 |
| Power dissipation | PD |  |  | 300 | mW | Single diode loaded; Ta=25℃ | 1 |
| Maximum forward voltage | VF |  |  | 0.9 | V | IF = 10 mAdc | 1 |
| Storage temperature range | TSTG | -55 |  | 150 | ℃ |  | 1 |
| Operation temperature | TJ | -55 |  | 150 | ℃ |  | 1 |
| Thermal resistance, junction to ambient | RθJA |  |  | 417 | ℃/W | Junction to ambient; no test condition printed | 1 |

## Materials and finish

As the datasheet states them (page.json `metadata.appearance`; the 3D model's colours follow it).

| Part | Material | Colour / plating | Datasheet says | Page |
|---|---|---|---|---|
| contacts |  | tin | ● Terminals: Tin plated leads, solderable per J-STD-002 and JESD22-B102 | 1 |

## CAD (KiCad official)

- Symbol: `DZ23C27Q`
- Footprint: `Package_TO_SOT_SMD:SOT-23`
- 3D model: SOT-23(TO-236) (KiCad packages3D, STEP)
- 3D model files: `dz23c27q-etched.step` / `dz23c27q-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `dz23c27q.step` / `dz23c27q.glb` are the bare package body.

## Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

- **Datasheet:** [Yangzhou Yangjie Elec Tech datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603373507883511808) (5 pp, sha256 `84da0dd53380c328`, retrieved 2026-10-17, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (text+vision), consensus `claude-opus-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/dz23c27q-datasheet.pdf)