MMSZ5230B-TP

MCC Micro Commercial Components · Zener Diodes · SOD-123

MMSZ5230B-TP from MCC Micro Commercial Components, in a SOD-123. 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	K	passive	Cathode, the end marked with the cathode band; it goes positive of the anode in zener breakdown (VZ 4.7V nominal, ±5%, at IZT=20mA for MMSZ5230B).
2	A	passive	Anode, the end opposite the cathode mark; forward voltage is at most 0.9V at IF=10mA.

Key specifications

Parameter	Value
Manufacturer	MCC Micro Commercial Components
Package	SOD-123
Category	Diodes
Pins	2

Electrical characteristics

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

Parameter	Symbol	Min	Typ	Max	Unit	Conditions	Page
Maximum Zener impedance (ZZT) at IZT	ZZT			19	Ω	@ IZT = 20 mA; 60 Hz AC at 10% of IZT superimposed	2
Maximum Zener impedance (ZZK) at IZK	ZZK			1900	Ω	@ IZK = 0.25 mA; 60 Hz AC at 10% of IZK superimposed	2
Maximum reverse leakage current	IR			5	µA	@ VR = 2.0 V	2
Maximum forward voltage	VF			0.9	V	IF = 10 mA	1
Power dissipation	PD			500	mW	Note 3: mounted on 5.0 mm² (0.013 mm thick) land areas	1
Zener voltage tolerance (B suffix)	VZ	-5		5	%	Standard tolerance for B suffix (MMSZ5230B); Note 4	2
Maximum Zener voltage temperature coefficient		-0.03		0.03	%/°C	Printed as ±0.030 %/°C for MMSZ5230B at IZT = 20 mA	2
Operating junction temperature range		-65		150	°C	Operating junction temperature range	1
Storage temperature range		-65		150	°C	Storage temperature range	1
Thermal resistance, junction to ambient			340		°C/W	Junction to ambient on FR-4 board with minimum recommended solder pad layout (Note 2)	1

CAD (KiCad official)

Symbol: MMSZ5230B-TP
Footprint: Diode_SMD:D_SOD-123F
3D model: SOD-123 (KiCad packages3D, STEP)
3D model files: mmsz5230b-tp-etched.step / mmsz5230b-tp-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); mmsz5230b-tp.step / mmsz5230b-tp.glb are the bare package body.

Provenance

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

Datasheet: MCC Micro Commercial Components datasheet (5 pp, sha256 38cdd4ebfc688c2f, retrieved 2026-10-13, 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

# MMSZ5230B-TP

**MCC Micro Commercial Components** · Zener Diodes · SOD-123

MMSZ5230B-TP from MCC Micro Commercial Components, in a SOD-123. 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 | K | passive | Cathode, the end marked with the cathode band; it goes positive of the anode in zener breakdown (VZ 4.7V nominal, ±5%, at IZT=20mA for MMSZ5230B). |
| 2 | A | passive | Anode, the end opposite the cathode mark; forward voltage is at most 0.9V at IF=10mA. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | MCC Micro Commercial Components |
| Package | SOD-123 |
| Category | Diodes |
| Pins | 2 |

## Electrical characteristics

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

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Maximum Zener impedance (ZZT) at IZT | ZZT |  |  | 19 | Ω | @ IZT = 20 mA; 60 Hz AC at 10% of IZT superimposed | 2 |
| Maximum Zener impedance (ZZK) at IZK | ZZK |  |  | 1900 | Ω | @ IZK = 0.25 mA; 60 Hz AC at 10% of IZK superimposed | 2 |
| Maximum reverse leakage current | IR |  |  | 5 | µA | @ VR = 2.0 V | 2 |
| Maximum forward voltage | VF |  |  | 0.9 | V | IF = 10 mA | 1 |
| Power dissipation | PD |  |  | 500 | mW | Note 3: mounted on 5.0 mm² (0.013 mm thick) land areas | 1 |
| Zener voltage tolerance (B suffix) | VZ | -5 |  | 5 | % | Standard tolerance for B suffix (MMSZ5230B); Note 4 | 2 |
| Maximum Zener voltage temperature coefficient |  | -0.03 |  | 0.03 | %/°C | Printed as ±0.030 %/°C for MMSZ5230B at IZT = 20 mA | 2 |
| Operating junction temperature range |  | -65 |  | 150 | °C | Operating junction temperature range | 1 |
| Storage temperature range |  | -65 |  | 150 | °C | Storage temperature range | 1 |
| Thermal resistance, junction to ambient |  |  | 340 |  | °C/W | Junction to ambient on FR-4 board with minimum recommended solder pad layout (Note 2) | 1 |

## CAD (KiCad official)

- Symbol: `MMSZ5230B-TP`
- Footprint: `Diode_SMD:D_SOD-123F`
- 3D model: SOD-123 (KiCad packages3D, STEP)
- 3D model files: `mmsz5230b-tp-etched.step` / `mmsz5230b-tp-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `mmsz5230b-tp.step` / `mmsz5230b-tp.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [MCC Micro Commercial Components datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590903445408854016) (5 pp, sha256 `38cdd4ebfc688c2f`, retrieved 2026-10-13, 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/mmsz5230b-tp-datasheet.pdf)