DDZX13B-13

Diodes Incorporated · Zener Diodes · SOT-23

DDZX13B-13 from Diodes Incorporated, in a SOT-23. 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	A	passive	Anode of the zener diode, the bottom-left terminal in the device schematic, which carries the Zener voltage of 12.55 V to 13.21 V at IZT = 10 mA for DDZX13B.
2	NC	unconnected	No internal connection, because the device schematic shows the bottom-right terminal without any connection to the diode.
3	K	passive	Cathode of the zener diode, the single top terminal in the device schematic, which goes positive relative to the anode in reverse breakdown.

Key specifications

Parameter	Value
Manufacturer	Diodes Incorporated
Package	SOT-23
Category	Diodes
Pins	3

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter	Symbol	Min	Max	Unit	Conditions	Page
Zener Voltage	VZ	12.55	13.21	V	@ IZT = 10 mA; Note 8: measured <40ms after power is supplied	2
Maximum Zener Impedance (at IZT)	ZZT		14	Ω	f = 1kHz; @ IZT = 10 mA	2
Maximum Zener Impedance (at IZK)	ZZK		110	Ω	f = 1kHz; @ IZK = 0.5 mA	2
Maximum Reverse Current	IR		0.1	μA	@ VR = 10.0 V; Note 9: short duration pulse test	2
Power Dissipation	PD		300	mW	Note 7: device mounted on FR-4 PCB with recommended pad layout	2
Thermal Resistance, Junction to Ambient Air	RJA		417	°C/W	Note 7: device mounted on FR-4 PCB with recommended pad layout	2
Operating and Storage Temperature Range	TJ, TSTG	-65	150	°C		2

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: Finish - Matte Tin Annealed over Alloy 42 Leadframe. Solderable per MIL-STD-202, Method 208	1

CAD (KiCad official)

Symbol: DDZX13B-13
Footprint: Package_TO_SOT_SMD:SOT-23
3D model: SOT-23 (KiCad packages3D, STEP)
3D model files: ddzx13b-13-etched.step / ddzx13b-13-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ddzx13b-13.step / ddzx13b-13.glb are the bare package body.

Provenance

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

Datasheet: Diodes Incorporated datasheet (8 pp, sha256 f1abaaad1d27cb30, retrieved 2026-10-20, 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

# DDZX13B-13

**Diodes Incorporated** · Zener Diodes · SOT-23

DDZX13B-13 from Diodes Incorporated, in a SOT-23. 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 | A | passive | Anode of the zener diode, the bottom-left terminal in the device schematic, which carries the Zener voltage of 12.55 V to 13.21 V at IZT = 10 mA for DDZX13B. |
| 2 | NC | unconnected | No internal connection, because the device schematic shows the bottom-right terminal without any connection to the diode. |
| 3 | K | passive | Cathode of the zener diode, the single top terminal in the device schematic, which goes positive relative to the anode in reverse breakdown. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Diodes Incorporated |
| Package | SOT-23 |
| 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 | 12.55 |  | 13.21 | V | @ IZT = 10 mA; Note 8: measured <40ms after power is supplied | 2 |
| Maximum Zener Impedance (at IZT) | ZZT |  |  | 14 | Ω | f = 1kHz; @ IZT = 10 mA | 2 |
| Maximum Zener Impedance (at IZK) | ZZK |  |  | 110 | Ω | f = 1kHz; @ IZK = 0.5 mA | 2 |
| Maximum Reverse Current | IR |  |  | 0.1 | μA | @ VR = 10.0 V; Note 9: short duration pulse test | 2 |
| Power Dissipation | PD |  |  | 300 | mW | Note 7: device mounted on FR-4 PCB with recommended pad layout | 2 |
| Thermal Resistance, Junction to Ambient Air | RJA |  |  | 417 | °C/W | Note 7: device mounted on FR-4 PCB with recommended pad layout | 2 |
| Operating and Storage Temperature Range | TJ, TSTG | -65 |  | 150 | °C |  | 2 |

## 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: Finish - Matte Tin Annealed over Alloy 42 Leadframe. Solderable per MIL-STD-202, Method 208 | 1 |

## CAD (KiCad official)

- Symbol: `DDZX13B-13`
- Footprint: `Package_TO_SOT_SMD:SOT-23`
- 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files: `ddzx13b-13-etched.step` / `ddzx13b-13-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ddzx13b-13.step` / `ddzx13b-13.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Diodes Incorporated datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603089629197721600) (8 pp, sha256 `f1abaaad1d27cb30`, retrieved 2026-10-20, 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/ddzx13b-13-datasheet.pdf)