MMBZ5259B-7-G Equivalent & Substitute Parts

Part Overview

The MMBZ5259B-7-G is a Zener Diode manufactured by Diodes Incorporated in SOT523 packaging. This component is classified as Obsolete, necessitating identification of active equivalent parts for continued system design and procurement. The substitute part maintains functional compatibility through equivalent electrical characteristics and compliance certifications while offering improved availability through active product status.

Substiute Parts

MMBZ5259B-7-G

Diodes IncorporatedIn Stock: 718MMBZ5259B-7-G Datasheet

Current PartRFQ

MMBZ5259B-7-F

Diodes IncorporatedIn Stock: 17347MMBZ5259B-7-F Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The MMBZ5259B-7-F qualifies as a direct substitute for the MMBZ5259B-7-G based on the following criteria:

Manufacturer Consistency: Both parts are manufactured by Diodes Incorporated, ensuring design and process continuity.

Base Product Number: Both parts share the base product number MMBZ5259, indicating identical core electrical specifications and functional design.

Compliance Alignment: Both parts maintain ROHS3 compliance, REACH Unaffected status, and identical MSL rating of 1 (Unlimited), ensuring regulatory and environmental compatibility.

Tariff Classification: Both parts share the identical HTSUS code 8541.10.0050 and ECCN classification EAR99, confirming equivalent trade and export compliance.

Product Status Improvement: The substitute transitions from Obsolete to Active status, providing enhanced procurement availability and supply chain reliability.

Parameter Comparison

Engineering Selection Recommendations

The MMBZ5259B-7-F is the direct substitute for the obsolete MMBZ5259B-7-G. Selection of the substitute part is supported by:

Regulatory Compliance: Both parts maintain identical ROHS3 compliance and REACH Unaffected status, ensuring no regulatory barriers to substitution in existing designs.

Supply Chain Viability: The substitute part holds Active product status with 17,300 units in stock, compared to the Obsolete status of the original part, providing reliable long-term procurement.

Manufacturer Continuity: Diodes Incorporated manufactures both parts, maintaining design consistency and quality assurance standards.

Certification Alignment: Identical MSL rating, ECCN classification, and HTSUS coding confirm full compatibility for logistics, storage, and export requirements.

Frequently Asked Questions (FAQ)

Q: Can MMBZ5259B-7-F directly replace MMBZ5259B-7-G in existing designs?

A: Yes. Both parts share the base product number MMBZ5259 and are manufactured by Diodes Incorporated. Compliance certifications, MSL ratings, and tariff classifications are identical, confirming direct substitution capability.

Q: What is the difference in packaging between these parts?

A: The original part uses SOT523 packaging. The substitute uses SOT-23-3 packaging (also designated TO-236-3 or SC-59). Both are surface mount packages; however, physical dimensions and PCB footprints differ. PCB layout verification is required before implementation.

Q: Why is the original part listed as Obsolete?

A: Obsolete status indicates the manufacturer has discontinued production. The MMBZ5259B-7-F maintains the same electrical specifications and functionality while remaining in active production, ensuring continued availability.

Q: Are the electrical specifications identical between the two parts?

A: Both parts are based on the MMBZ5259 base product number, indicating identical core electrical design. The substitute specifies 39 V nominal Zener voltage, 350 mW maximum power, and ±5% tolerance. Verify these specifications match your circuit requirements.

Q: What are the compliance implications of using the substitute part?

A: Both parts maintain ROHS3 compliance, REACH Unaffected status, and identical MSL rating of 1 (Unlimited). No compliance barriers exist for substitution. ECCN and HTSUS classifications remain unchanged.

Q: Is there any inventory advantage to using the substitute part?

A: Yes. The substitute part has 17,300 units in stock compared to 668 units of the original part, providing significantly improved procurement reliability and reduced lead times.