MMSZ5261B-TP Zener Diode Equivalent & Substitute Parts

Part Overview

The MMSZ5261B-TP is a 47 V, 500 mW Zener diode manufactured by Micro Commercial Co in SOD-123 surface mount packaging. This component is classified as an active product and is RoHS3 compliant. Zener diodes in this voltage and power rating are used for voltage regulation, overvoltage protection, and reference voltage applications in electronic circuits. Substitute parts may be required due to inventory availability, supply chain considerations, or design standardization across manufacturing partners.

Substiute Parts

MMSZ5261B-TP

Micro Commercial CoIn Stock: 863MMSZ5261B-TP Datasheet

Current PartRFQ

MMSZ5261BT1G

onsemiIn Stock: 4199MMSZ5261BT1G Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MMSZ5261B-TP is determined by strict equivalence across the following critical parameters:

Zener Voltage (Vz): The nominal zener voltage must be 47 V with ±5% tolerance to maintain voltage regulation and protection characteristics within the original design specifications.

Power Dissipation (Pmax): Maximum power rating of 500 mW ensures thermal compatibility and prevents component failure under specified operating conditions.

Package and Mounting: SOD-123 surface mount package is mandatory for mechanical and electrical compatibility with printed circuit board layouts and assembly processes.

Operating Temperature Range: The -55°C to 150°C operating range must be maintained to ensure reliability across the full application temperature spectrum.

Impedance (Zzt): Maximum impedance of 105 Ohms defines the dynamic resistance characteristics critical for voltage regulation performance.

Reverse Leakage Current: 100 nA @ 36 V specifies the leakage characteristics that affect circuit performance in standby and low-current conditions.

Compliance Standards: RoHS3 compliance and REACH unaffected status are mandatory for regulatory and environmental requirements.

The substitute part MMSZ5261BT1G manufactured by onsemi meets all these critical parameters and is therefore electrically and mechanically equivalent to the MMSZ5261B-TP.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection: MMSZ5261B-TP (Micro Commercial Co) is the specified component and should be used when available from inventory or supply chain.

Substitute Selection: MMSZ5261BT1G (onsemi) is a direct electrical and mechanical equivalent. This substitute part is appropriate for use when the primary part is unavailable. Both components are active products with RoHS3 compliance and REACH unaffected status, meeting all regulatory requirements for industrial and commercial applications.

Inventory Consideration: The MMSZ5261BT1G currently has higher inventory availability (4100 pcs) compared to the MMSZ5261B-TP (842 pcs), which may influence supply chain decisions for high-volume production requirements.

Compliance Verification: Both parts maintain identical compliance certifications (RoHS3, REACH unaffected, EAR99 ECCN classification, and HTSUS code 8541.10.0050), ensuring no regulatory impact from substitution.

Frequently Asked Questions (FAQ)

Q: Can MMSZ5261BT1G be used as a direct replacement for MMSZ5261B-TP?

A: Yes. The MMSZ5261BT1G is electrically and mechanically equivalent to the MMSZ5261B-TP. Both components have identical zener voltage (47 V), power rating (500 mW), impedance (105 Ohms), reverse leakage current (100 nA @ 36 V), operating temperature range (-55°C to 150°C), and SOD-123 package specifications. No circuit modifications are required.

Q: Are there any differences in the package or mounting between these parts?

A: No. Both the MMSZ5261B-TP and MMSZ5261BT1G use SOD-123 surface mount packaging and are supplied in Tape & Reel format. They are mechanically interchangeable on printed circuit boards without any layout or assembly process changes.

Q: Do both parts meet the same compliance and regulatory standards?

A: Yes. Both components are RoHS3 compliant, REACH unaffected, classified as EAR99 for export control purposes, and share the same HTSUS code (8541.10.0050). They meet identical environmental and regulatory requirements.

Q: What is the significance of the ±5% tolerance specification?

A: The ±5% tolerance defines the acceptable variation in the zener voltage from the nominal 47 V value. This tolerance ensures that the actual zener voltage will fall between 44.65 V and 49.35 V, maintaining circuit performance within design specifications. Both substitute parts carry this same tolerance.

Q: How does the 105 Ohms impedance specification affect circuit performance?

A: The impedance (Zzt) of 105 Ohms represents the dynamic resistance of the zener diode and affects voltage regulation quality and transient response. Both parts have identical impedance specifications, ensuring equivalent performance in voltage regulation and protection applications.

Q: Is the reverse leakage current specification important for circuit design?

A: Yes. The reverse leakage current of 100 nA @ 36 V specifies the small current that flows through the diode when reverse biased. This parameter affects circuit performance in standby conditions and low-current applications. Both parts have identical leakage specifications.

Q: What does Moisture Sensitivity Level 1 (Unlimited) mean?

A: MSL 1 (Unlimited) indicates that the component has no moisture sensitivity restrictions. These parts do not require special moisture control during storage, handling, or assembly, simplifying supply chain and manufacturing processes.