MM5Z2V7ST1 Equivalent & Substitute Parts

Part Overview

The MM5Z2V7ST1 is a Zener diode rated at 2.7 V nominal with 200 mW maximum power dissipation in a surface mount SOD-523 package. Manufactured by onsemi, this component is classified as obsolete, indicating discontinuation from active production. Identification of equivalent and substitute parts is necessary to support ongoing maintenance, repair, and new design requirements where this component is specified or currently deployed.

Substiute Parts

MM5Z2V7ST1

onsemiIn Stock: 858MM5Z2V7ST1 Datasheet

Current PartRFQ

MM3Z2V7T1G

onsemiIn Stock: 18840MM3Z2V7T1G Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MM5Z2V7ST1 is determined by the following critical parameters:

Electrical Compatibility Requirements:

• Zener voltage must match at 2.7 V nominal
• Operating temperature range must encompass -65°C ~ 150°C
• Forward voltage characteristics must remain within specified limits
• Impedance and leakage current parameters must be compatible with circuit design tolerances

Physical and Mechanical Requirements:

• Surface mount mounting type is mandatory
• Package footprint compatibility must be verified for PCB layout

Regulatory and Compliance Considerations:

• RoHS compliance status affects suitability for new designs and regulated applications
• REACH and ECCN classifications remain consistent across the onsemi MM-series Zener diodes

The MM3Z2V7T1G qualifies as a substitute based on matching nominal Zener voltage, operating temperature range, forward voltage characteristics, and surface mount configuration. The substitute offers enhanced power dissipation capability (300 mW versus 200 mW) and improved RoHS compliance status.

Parameter Comparison

Engineering Selection Recommendations

For Obsolete Component Replacement: The MM3Z2V7T1G is the designated substitute for the MM5Z2V7ST1. Both components share identical nominal Zener voltage (2.7 V) and operating temperature specifications (-65°C ~ 150°C). The substitute maintains electrical compatibility through matching impedance (100 Ohms maximum) and forward voltage characteristics (900 mV @ 10 mA).

Advantages of MM3Z2V7T1G:

• Active product status ensures continued availability and supply chain reliability
• ROHS3 compliance supports regulatory requirements for new designs and applications subject to RoHS directives
• Higher power dissipation rating (300 mW) provides design margin over the original 200 mW specification
• Lower reverse leakage current (20 µA @ 1 V versus 100 µA @ 1 V) improves circuit performance characteristics

Package Consideration: The substitute uses SOD-323 packaging compared to the original SOD-523. PCB layout modifications are required to accommodate the different footprint. Both packages are industry-standard surface mount configurations with established design guidelines.

Tolerance Consideration: The substitute exhibits ±7% Zener voltage tolerance compared to the original ±4%. Circuit designs dependent on tighter voltage tolerance specifications require evaluation to confirm acceptable performance margins.

Frequently Asked Questions (FAQ)

Q: Can MM3Z2V7T1G be used as a direct replacement for MM5Z2V7ST1 without circuit modification?

A: Electrical substitution is valid based on matching Zener voltage, operating temperature range, and forward voltage characteristics. PCB layout modification is required due to different package types (SOD-323 versus SOD-523). Tolerance differences (±7% versus ±4%) must be evaluated against circuit design specifications.

Q: What is the primary reason for substituting MM5Z2V7ST1?

A: The MM5Z2V7ST1 is classified as obsolete, indicating discontinuation from active manufacturing. The MM3Z2V7T1G provides functional equivalence with active product status and improved compliance certifications.

Q: Are there any electrical performance differences between these components?

A: Both components maintain identical nominal Zener voltage (2.7 V) and operating temperature range (-65°C ~ 150°C). The substitute offers improved reverse leakage characteristics (20 µA @ 1 V versus 100 µA @ 1 V) and higher power dissipation capability (300 mW versus 200 mW). Zener voltage tolerance differs at ±7% versus ±4%.

Q: What packaging changes are required when substituting MM3Z2V7T1G?

A: The substitute uses SOD-323 package versus the original SOD-523. Both are surface mount configurations. PCB footprint, trace routing, and component placement require redesign to accommodate the different package dimensions and pin configuration.

Q: Does the substitute meet current regulatory requirements?

A: MM3Z2V7T1G is ROHS3 compliant, supporting applications subject to RoHS directives. The original MM5Z2V7ST1 is RoHS non-compliant. Both components maintain REACH Unaffected and EAR99 ECCN classifications.

Q: Is inventory availability a consideration in component selection?

A: MM3Z2V7T1G maintains active production status with substantial inventory availability (18,821 pieces in stock). MM5Z2V7ST1 is obsolete with limited remaining inventory (798 pieces). Active product status ensures long-term supply chain reliability.