MMSZ5262C-E3-08 Equivalent & Substitute Parts

Part Overview

The MMSZ5262C-E3-08 is a Zener diode rated at 51 V nominal voltage with 500 mW maximum power dissipation in a surface mount SOD-123 package. Manufactured by Vishay General Semiconductor - Diodes Division, this component is classified as Active and RoHS3 compliant. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are required due to component availability, supply chain considerations, or design flexibility within specified tolerance ranges.

Substiute Parts

MMSZ5262C-E3-08

Vishay General Semiconductor - Diodes DivisionIn Stock: 1025MMSZ5262C-E3-08 Datasheet

Current PartRFQ

CMHZ5262B TR PBFREE

Central Semiconductor CorpIn Stock: 11589CMHZ5262B TR PBFREE Datasheet

MFR RecommendedRFQ

MMSZ51T1G

onsemiIn Stock: 9440MMSZ51T1G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MMSZ5262C-E3-08 is determined by the following critical parameters:

Electrical Compatibility Criteria:

• Zener voltage nominal rating of 51 V
• Maximum power dissipation of 500 mW
• Surface mount SOD-123 package configuration
• Operating temperature range compatibility
• RoHS3 compliance and MSL rating

Tolerance Considerations: The primary part specifies ±2% tolerance on Zener voltage. Substitute parts with ±5% tolerance remain functionally equivalent within the 51 V specification, as the tolerance band encompasses the nominal value across both specifications.

Impedance Variation: Impedance values up to 180 Ohms are acceptable substitutes for the 125 Ohm specification, as this parameter affects transient response characteristics within acceptable circuit operating margins for standard Zener diode applications.

Reverse Leakage Current: Substitute parts with reverse leakage current specifications of 50 nA or lower at their respective voltage ratings maintain equivalent performance to the 100 nA @ 39 V specification.

Parameter Comparison

Engineering Selection Recommendations

Both substitute parts maintain full electrical and mechanical compatibility with the MMSZ5262C-E3-08 within the specified parameter ranges.

CMHZ5262B TR PBFREE (Central Semiconductor Corp): This substitute provides identical impedance specification (125 Ohms) and reverse leakage current rating (100 nA @ 39 V) to the primary part. The ±5% tolerance specification is wider than the primary part's ±2%, but remains within acceptable operating margins for standard Zener regulation applications. Extended lower operating temperature range (-65°C) provides additional thermal margin. RoHS3 compliance and MSL 1 rating match the primary part.

MMSZ51T1G (onsemi): This substitute maintains the 51 V nominal Zener voltage and 500 mW power rating with ±5% tolerance. The impedance specification of 180 Ohms is higher than the primary part but remains within acceptable performance parameters for Zener diode circuit applications. Reverse leakage current of 50 nA @ 35.7 V is lower than the primary specification, indicating superior leakage performance. Operating temperature range (-55 to 150°C) matches the primary part. RoHS3 compliance and MSL 1 rating are equivalent.

All three parts are Active status components with full regulatory compliance (RoHS3, REACH Unaffected, EAR99 classification).

Frequently Asked Questions (FAQ)

Q: Can CMHZ5262B TR PBFREE be used as a direct replacement for MMSZ5262C-E3-08?

A: Yes. Both parts share identical Zener voltage (51 V), power rating (500 mW), impedance (125 Ohms), and package configuration (SOD-123 surface mount). The tolerance difference (±5% vs ±2%) does not prevent substitution, as the ±5% specification encompasses the nominal 51 V value. Both are RoHS3 compliant with MSL 1 rating.

Q: What is the difference between MMSZ51T1G and MMSZ5262C-E3-08?

A: The primary electrical difference is impedance specification: MMSZ51T1G specifies 180 Ohms maximum versus 125 Ohms for MMSZ5262C-E3-08. Both maintain 51 V nominal Zener voltage and 500 mW power dissipation. MMSZ51T1G exhibits lower reverse leakage current (50 nA @ 35.7 V). Both use SOD-123 surface mount packaging and are RoHS3 compliant.

Q: Are there temperature range considerations when selecting a substitute?

A: CMHZ5262B TR PBFREE specifies -65 to 150°C operating range, extending 10°C lower than both MMSZ5262C-E3-08 and MMSZ51T1G (-55 to 150°C). For applications requiring operation below -55°C, CMHZ5262B TR PBFREE provides additional thermal margin. For standard applications within -55 to 150°C, all three parts are equivalent.

Q: Does tolerance specification affect circuit performance?

A: Tolerance specification defines the manufacturing variation band around the nominal 51 V Zener voltage. MMSZ5262C-E3-08 (±2%) provides tighter voltage control than substitute parts (±5%). For precision voltage regulation applications requiring strict voltage tolerance, the primary part is preferred. For general-purpose Zener regulation, ±5% tolerance substitutes are functionally equivalent.

Q: Can these parts be used interchangeably on the same PCB assembly?

A: Yes. All three parts use identical SOD-123 surface mount package configuration, enabling direct PCB footprint compatibility. No layout or assembly process modifications are required when substituting between these parts.

Q: What is the significance of impedance differences between these parts?

A: Impedance affects transient response and dynamic resistance characteristics of the Zener diode. MMSZ5262C-E3-08 and CMHZ5262B TR PBFREE specify 125 Ohms, while MMSZ51T1G specifies 180 Ohms. For applications with stringent transient response requirements, lower impedance values provide faster response. For standard regulation applications, both impedance values deliver acceptable performance.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. MMSZ5262C-E3-08, CMHZ5262B TR PBFREE, and MMSZ51T1G are all RoHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating. All parts are REACH Unaffected and classified as EAR99 for export control purposes.