MMSZ5240B Equivalent & Substitute Parts

Part Overview

The MMSZ5240B is an active-status zener diode manufactured by Taiwan Semiconductor Corporation, designed for voltage regulation and protection applications in surface mount configurations. This component operates at a nominal zener voltage of 10 V with a maximum power dissipation of 500 mW in a compact SOD-123F package. The part is RoHS3 compliant and REACH unaffected, making it suitable for modern electronics manufacturing standards. Substitute parts are identified when equivalent electrical characteristics and mechanical compatibility are maintained across the specified parameter range.

Substiute Parts

MMSZ5240B

Taiwan Semiconductor CorporationIn Stock: 65464MMSZ5240B Datasheet

Current PartRFQ

MMSZ5240B RHG

Taiwan Semiconductor CorporationIn Stock: 7015MMSZ5240B RHG Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the MMSZ5240B are identified based on strict electrical and mechanical parameter equivalence. The following criteria determine substitution eligibility:

Critical Matching Parameters:

• Nominal zener voltage: 10 V
• Tolerance specification: ±5%
• Maximum power dissipation: 500 mW
• Package type: SOD-123F
• Mounting configuration: Surface Mount
• Impedance (Max): 17 Ohms
• Reverse leakage current: 3 µA @ 8 V
• Forward voltage: 900 mV @ 10 mA
• Operating temperature range: -65°C to 150°C
• Regulatory compliance: RoHS3 Compliant, REACH Unaffected

Parts meeting all specified parameters within the stated tolerances are classified as parametric equivalents and direct substitutes. No deviations from these parameters are permitted for substitution classification.

Parameter Comparison

Engineering Selection Recommendations

Both the MMSZ5240B and MMSZ5240B RHG are active-status products from Taiwan Semiconductor Corporation with identical electrical specifications and mechanical compatibility. Selection between these parts is based on availability and supply chain requirements rather than technical differentiation.

Compliance Considerations:

• Both parts maintain RoHS3 compliance, suitable for applications requiring restricted substance adherence
• Both parts are REACH unaffected, eliminating regulatory substitution barriers
• Both parts operate across the full industrial temperature range of -65°C to 150°C

Inventory Availability:

• MMSZ5240B: 65,400 pieces in stock
• MMSZ5240B RHG: 6,906 pieces in stock

Either part may be selected for new designs or production runs without modification to circuit design, PCB layout, or assembly processes.

Frequently Asked Questions (FAQ)

Q: Are MMSZ5240B and MMSZ5240B RHG electrically interchangeable?

A: Yes. Both parts share identical nominal zener voltage (10 V), tolerance (±5%), maximum power dissipation (500 mW), impedance (17 Ohms), reverse leakage current (3 µA @ 8 V), forward voltage (900 mV @ 10 mA), and operating temperature range (-65°C to 150°C). No circuit modifications are required for substitution.

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

A: Yes. Both parts are packaged in SOD-123F and configured for surface mount assembly. PCB footprints, reflow profiles, and assembly processes remain unchanged between the two parts.

Q: What is the difference between MMSZ5240B and MMSZ5240B RHG?

A: The parts are parametrically identical. The RHG designation indicates a different manufacturing lot or tape reel configuration from Taiwan Semiconductor Corporation. No electrical or mechanical differences exist between the designations.

Q: Are both parts RoHS3 compliant?

A: Yes. Both MMSZ5240B and MMSZ5240B RHG are RoHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronics manufacturing.

Q: Which part should be selected for new production?

A: Selection is based on supply chain availability and lead time requirements. Both parts are functionally equivalent and may be used in new designs without technical restrictions. The MMSZ5240B has higher current inventory (65,400 pieces) compared to MMSZ5240B RHG (6,906 pieces).

Q: Is the SOD-123F package suitable for automated assembly?

A: Yes. The SOD-123F package is a standard surface mount package compatible with pick-and-place equipment, reflow soldering, and automated inspection systems used in modern electronics manufacturing.

Q: What applications are these zener diodes suitable for?

A: These 10 V, 500 mW zener diodes are used in voltage regulation, overvoltage protection, and reference voltage circuits. The 500 mW power rating and SOD-123F package make them suitable for compact, low-power applications in consumer and industrial electronics.