MMBZ5239B-7-G Equivalent & Substitute Parts

Part Overview

The MMBZ5239B-7-G is a Zener diode manufactured by Diodes Incorporated, classified in the SOT523 package category. This component is designated as Obsolete in product status, necessitating identification of active equivalent parts for ongoing design requirements and procurement needs. The substitute part maintains functional compatibility while offering improved availability and active manufacturing support.

Substiute Parts

MMBZ5239B-7-G

Diodes IncorporatedIn Stock: 1010MMBZ5239B-7-G Datasheet

Current PartRFQ

MMBZ5239B-7-F

Diodes IncorporatedIn Stock: 3247MMBZ5239B-7-F Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The MMBZ5239B-7-G is directly substituted by MMBZ5239B-7-F based on the following substitution criteria:

Manufacturer Continuity: Both parts are manufactured by Diodes Incorporated, ensuring consistent design specifications and quality standards.

Base Product Number: Both parts share the base product number MMBZ5239, indicating they are variants within the same product family with identical electrical characteristics.

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

Functional Equivalence: The substitute part is specified as a Zener diode with 9.1 V nominal voltage and 350 mW maximum power rating, representing the electrical performance class of the main part.

Packaging Compatibility: The substitute transitions from the obsolete SOT523 package to the active SOT-23-3 package (also designated TO-236-3 or SC-59), which is a standard surface mount configuration with equivalent pin functionality.

Parameter Comparison

Engineering Selection Recommendations

The MMBZ5239B-7-F is the direct substitute for the obsolete MMBZ5239B-7-G. Selection of the substitute part is based on the following engineering factors:

Product Status Transition: The main part is classified as Obsolete, while the substitute maintains Active product status with current manufacturing support and availability. This transition ensures long-term supply chain continuity and eliminates procurement risk.

Regulatory Compliance: Both parts maintain identical ROHS3 compliance and REACH Unaffected status, ensuring no regulatory barriers to substitution. The MSL rating of 1 (Unlimited) is preserved, maintaining identical moisture handling requirements.

Manufacturer Consistency: Both parts originate from Diodes Incorporated, ensuring design continuity and quality assurance standards.

Package Transition: The substitution involves a transition from SOT523 to SOT-23-3 packaging. Both are surface mount configurations suitable for automated assembly processes. PCB layout modifications may be required to accommodate the different package footprint.

Electrical Specifications: The substitute part provides complete electrical specifications (9.1 V nominal voltage, 350 mW power rating, ±5% tolerance) consistent with the MMBZ5239 product family, confirming functional equivalence.

Frequently Asked Questions (FAQ)

Q: Can MMBZ5239B-7-F be used as a direct replacement for MMBZ5239B-7-G in existing designs?

A: Yes, MMBZ5239B-7-F is the direct substitute for MMBZ5239B-7-G. Both parts share the same base product number (MMBZ5239) and manufacturer (Diodes Incorporated), indicating identical electrical performance. However, PCB layout modifications are required due to package differences (SOT523 to SOT-23-3).

Q: What are the key differences between MMBZ5239B-7-G and MMBZ5239B-7-F?

A: The primary differences are product status and packaging. MMBZ5239B-7-G is Obsolete with SOT523 packaging, while MMBZ5239B-7-F is Active with SOT-23-3 packaging. Electrical specifications, compliance certifications, and manufacturer remain identical.

Q: Are there any compliance or regulatory concerns with substituting these parts?

A: No. Both parts maintain ROHS3 compliance, REACH Unaffected status, and identical MSL ratings. The substitution introduces no regulatory barriers or compliance changes.

Q: What is the impact of the package change from SOT523 to SOT-23-3?

A: The package change requires PCB footprint modification. SOT-23-3 is a standard surface mount package (also designated TO-236-3 or SC-59) with three leads. Design teams must update PCB layouts, solder paste stencils, and pick-and-place programming to accommodate the new package geometry.

Q: Is the MMBZ5239B-7-F currently available in inventory?

A: Yes. MMBZ5239B-7-F is listed as Active product status with 3200 pieces in new original stock, ensuring immediate availability for procurement and production requirements.

Q: What are the electrical specifications of the substitute part?

A: MMBZ5239B-7-F is specified as a 9.1 V Zener diode with 350 mW maximum power rating, ±5% tolerance, 10 Ohms maximum impedance, 3 µA reverse leakage current at 7 V, and 900 mV maximum forward voltage at 10 mA. Operating temperature range is -65°C to 150°C.

Q: Are moisture sensitivity requirements the same for both parts?

A: Yes. Both MMBZ5239B-7-G and MMBZ5239B-7-F maintain MSL rating of 1 (Unlimited), indicating identical moisture handling and storage requirements with no special precautions necessary.