MMBZ5V6B Equivalent & Substitute Parts

Part Overview

The MMBZ5V6B is a transient voltage suppressor (TVS) diode manufactured by onsemi, designed for general-purpose overvoltage protection in surface-mount applications. This component features a 3V reverse standoff voltage and 8V maximum clamping voltage, housed in a SOT-23-3 package. The product is currently obsolete, making equivalent substitutes necessary for new designs and ongoing production requirements.

Substiute Parts

MMBZ5V6B

onsemiIn Stock: 9172MMBZ5V6B Datasheet

Current PartRFQ

MMBZ5V6ALT1G

UMWIn Stock: 605188MMBZ5V6ALT1G Datasheet

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BZX84-A5V6,215

Nexperia USA Inc.In Stock: 7560BZX84-A5V6,215 Datasheet

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MMBZ5232B-7-F

Diodes IncorporatedIn Stock: 61447MMBZ5232B-7-F Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution for the MMBZ5V6B is determined by the following critical parameters:

• Package compatibility: All substitutes must use TO-236-3, SC-59, or SOT-23-3 surface-mount packages
• Voltage rating alignment: Reverse standoff voltage of 3V and clamping voltage of 8V define the protection threshold
• Zener diode type: Unidirectional, 2-channel configuration for transient suppression
• Power dissipation: Peak pulse power rating must support the application requirements
• Mounting technology: Surface-mount configuration for automated assembly

The three qualified substitutes meet these criteria while offering active product status and improved availability compared to the obsolete MMBZ5V6B.

Parameter Comparison

Engineering Selection Recommendations

MMBZ5V6ALT1G (UMW) provides the closest functional match to the MMBZ5V6B. This TVS diode maintains identical voltage specifications (3V standoff, 8V clamping) and package configuration. The part is active and in high inventory (605,100 pcs), with ROHS3 compliance and unlimited moisture sensitivity rating. Operating temperature range of -55°C to 150°C covers standard industrial applications.

BZX84-A5V6,215 (Nexperia USA Inc.) is a zener diode with 5.6V nominal rating and 250mW power dissipation. This part carries automotive-grade qualification (AEC-Q101) and extended operating temperature range (-65°C to 150°C). The TO-236-3 package is mechanically and electrically compatible. This option is suitable for applications requiring automotive-level reliability.

MMBZ5232B-7-F (Diodes Incorporated) is a zener diode rated at 5.6V with 350mW power dissipation. This part offers the highest power rating among substitutes and is active with strong inventory availability (61,436 pcs). Operating temperature range extends to -65°C, and ROHS3 compliance is confirmed. The SOT-23-3 package provides direct mechanical compatibility.

All three substitutes are ROHS3 compliant, carry MSL-1 moisture sensitivity ratings, and are available in active production status.

Frequently Asked Questions (FAQ)

Q: Can MMBZ5V6ALT1G directly replace MMBZ5V6B in existing designs?

A: Yes. MMBZ5V6ALT1G maintains identical voltage specifications (3V reverse standoff, 8V clamping) and uses the same SOT-23-3 package. Both are TVS diodes with 2-channel unidirectional configuration. No circuit modifications are required.

Q: What is the difference between TVS diodes and standard zener diodes in this comparison?

A: MMBZ5V6ALT1G is classified as a TVS diode optimized for transient suppression with specified peak pulse current (3A). BZX84-A5V6,215 and MMBZ5232B-7-F are zener diodes with continuous power ratings. Both device types function as voltage suppressors but differ in transient response characteristics and power handling specifications.

Q: Are the BZX84-A5V6,215 and MMBZ5232B-7-F suitable for the same applications as MMBZ5V6B?

A: These parts have different voltage ratings (5.6V nominal vs. 3V standoff/8V clamping). They are suitable only if the application circuit tolerates the higher zener voltage. Verify circuit requirements before substitution.

Q: What is the significance of the automotive qualification on BZX84-A5V6,215?

A: AEC-Q101 qualification indicates the part meets automotive industry reliability standards. This certification is relevant only if the application requires automotive-grade components. For general-purpose applications, this qualification provides additional assurance but is not mandatory.

Q: Are all three substitutes available in the same packaging options?

A: All three substitutes use compatible surface-mount packages (SOT-23-3 or TO-236-3). These packages are mechanically and electrically interchangeable for PCB assembly purposes.

Q: What is the moisture sensitivity level (MSL) and why is it important?

A: MSL-1 (Unlimited) indicates these components have no moisture sensitivity restrictions. They can be stored indefinitely without special humidity controls and do not require baking before reflow soldering. All substitutes carry this rating.