What are the key specifications of the MMSZ5242B?

It features a 12V nominal Zener voltage, 350mW power dissipation, ±5% tolerance, and a maximum Zener impedance of 30 Ohms at 20mA.

What is the MMSZ5242B used for?

It is primarily used for voltage regulation, signal clamping, and general-purpose protection in electronic circuits.

What should engineers review before using the MMSZ5242B?

Engineers should verify the power dissipation limits, operating temperature range (-65°C to +150°C), and ensure the PCB layout accommodates the SOD-123 footprint.

What should sourcing teams check before buying MMSZ5242B?

Check lifecycle (Active), compliance data, distributor availability, and approved-source coverage. Current sourcing signal: low; readiness: easy.

What is the pinout of MMSZ5242B?

Use the MMSZ5242B datasheet for the official pinout diagram and pin names. In PartGenie, ask Datasheet AI about MMSZ5242B pinout to locate pins, power rails, and interface signals before layout.

MMSZ5242B Datasheet, Specs, Alternatives & ECAD | Yangjie Technology

AI summary

The MMSZ5242B is a 12V, 350mW Zener diode in a SOD-123 package, ideal for voltage regulation and clamping in space-constrained surface-mount designs.

Best for

Voltage regulation
Signal clamping
Automated assembly

Avoid if

Applications exceeding 350mW power dissipation

Check before use

Thermal dissipation requirements
Polarity orientation

Key specifications

Nominal Zener Voltage: 12 V
Power Dissipation: 350 mW
Tolerance: ±5%
Package: SOD-123

Compliance & Environment

RoHS: RoHS Compliant
REACH: REACH Unaffected
MSL: 1 (Unlimited)
ECCN: EAR99
HTSUS: -

Application

General PurposePower Management

Datasheet

687f549e660dd6ce773bf1907ddb7572_MMSZ5221-5259B N0205 REV.B.pdf

800 KB

Datasheet AI

CAD Models

Download ECAD models for MMSZ5242B: KiCad symbol & footprint, Altium footprint, PCB footprint, and 3D model.

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Where to Buy

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Alternative components

Part	Details	Match
BZT52C12MDD(Microdiode Semiconductor)	A potential pin-compatible 12V, 500mW Zener diode in a SOD-123 package. Datasheet review is required.	Needs validation

Design and risk insights

Questions & answers

The MMSZ5242B is a planar die Zener diode with a nominal Zener voltage of 12V, housed in a compact SOD-123 surface-mount package.

AI summary

Best for

Avoid if

Check before use

Key specifications

Compliance & Environment

Application

Datasheet

CAD Models

Where to Buy

Alternative components

Design and risk insights

Questions & answers

What is the MMSZ5242B?+×

What are the key specifications of the MMSZ5242B?+×

What is the MMSZ5242B used for?+×

What should engineers review before using the MMSZ5242B?+×

What should sourcing teams check before buying MMSZ5242B?+×

What is the pinout of MMSZ5242B?+×