MMSZ5231CT1G Equivalent & Substitute Parts

Part Overview

The MMSZ5231CT1G is an active surface mount Zener diode manufactured by onsemi, rated for 5.1 V nominal Zener voltage with 500 mW maximum power dissipation. This component operates across the temperature range of -55°C to 150°C and is packaged in the SOD-123 form factor. The part is ROHS3 compliant and carries unlimited moisture sensitivity level classification.

Substitute parts are identified when equivalent electrical performance and mechanical compatibility are maintained across all critical parameters. Alternative sources become necessary to address supply chain continuity, inventory availability, or procurement preferences while maintaining identical functional specifications.

Substiute Parts

MMSZ5231CT1G

onsemiIn Stock: 3968MMSZ5231CT1G Datasheet

Current PartRFQ

MMSZ5231C-E3-08

Vishay General Semiconductor - Diodes DivisionIn Stock: 2305MMSZ5231C-E3-08 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MMSZ5231CT1G is determined by equivalence across the following critical parameters:

Zener voltage specification (5.1 V nominal) with matching tolerance (±2%) ensures voltage regulation performance remains constant. Maximum power dissipation (500 mW) and impedance characteristics (17 Ohms maximum) define the thermal and dynamic response of the device. Reverse leakage current (5 µA @ 2 V) and forward voltage drop (900 mV @ 10 mA) establish the operational boundaries for both blocking and conducting states.

The SOD-123 surface mount package and operating temperature range (-55°C to 150°C) are mandatory mechanical and environmental compatibility requirements. Compliance certifications (ROHS3, unlimited MSL) confirm regulatory alignment.

Parts meeting all these parameters across electrical, thermal, mechanical, and compliance dimensions are classified as direct parametric equivalents.

Parameter Comparison

Engineering Selection Recommendations

The MMSZ5231C-E3-08 manufactured by Vishay General Semiconductor - Diodes Division is a direct parametric equivalent to the MMSZ5231CT1G. Both components are active products with identical electrical specifications, operating temperature ranges, and regulatory compliance status.

Selection between these parts is based on procurement availability, packaging format preference (Tape & Reel versus Cut Tape & Digi-Reel), and supply chain requirements. Both components maintain ROHS3 compliance and unlimited moisture sensitivity classification, confirming suitability for equivalent applications without additional environmental controls.

The primary distinction lies in packaging format: the onsemi part is supplied in Tape & Reel configuration, while the Vishay equivalent is available in Cut Tape and Digi-Reel formats. This difference does not affect electrical performance or mechanical compatibility in the SOD-123 package footprint.

Frequently Asked Questions (FAQ)

Q: Can the MMSZ5231C-E3-08 be used as a direct replacement for the MMSZ5231CT1G?

A: Yes. Both components share identical Zener voltage (5.1 V), tolerance (±2%), power rating (500 mW), impedance (17 Ohms), reverse leakage current (5 µA @ 2 V), operating temperature range (-55°C to 150°C), and SOD-123 package specifications. Electrical and mechanical compatibility is complete.

Q: What is the difference between Tape & Reel and Cut Tape & Digi-Reel packaging?

A: Tape & Reel packaging supplies components on continuous carrier tape wound on a reel, suitable for high-volume automated assembly. Cut Tape & Digi-Reel packaging provides components on cut tape segments or alternative reel formats, typically for lower-volume or mixed-component orders. Both formats contain identical components in the same SOD-123 package.

Q: Are there any compliance or regulatory differences between these parts?

A: No. Both the MMSZ5231CT1G and MMSZ5231C-E3-08 are ROHS3 compliant, REACH unaffected, and classified as EAR99 for export control purposes. Moisture sensitivity level is 1 (Unlimited) for both parts.

Q: What parameters must remain constant for substitution?

A: Zener voltage (5.1 V), tolerance (±2%), maximum power dissipation (500 mW), impedance (17 Ohms maximum), reverse leakage current (5 µA @ 2 V), operating temperature range (-55°C to 150°C), and SOD-123 package form factor are the critical parameters that define substitution eligibility.

Q: Can these parts be used interchangeably in existing designs?

A: Yes. The identical electrical specifications, thermal operating range, and package footprint ensure direct interchangeability in circuit designs. No design modifications or re-qualification are required.