MMBZ6V2ALT3G Equivalent & Substitute Parts

Part Overview

The MMBZ6V2ALT3G is a transient voltage suppressor (TVS) diode manufactured by onsemi, designed for general-purpose overvoltage protection in surface-mount applications. This unidirectional Zener diode features an 8.7V maximum clamping voltage and 2.76A peak pulse current capability in a compact SOT-23-3 package. The part is currently obsolete, making equivalent and substitute parts necessary for new designs and ongoing production support.

Substiute Parts

MMBZ6V2ALT3G

onsemiIn Stock: 1071MMBZ6V2ALT3G Datasheet

Current PartRFQ

SZMMBZ6V2ALT1G

onsemiIn Stock: 7671SZMMBZ6V2ALT1G Datasheet

DirectRFQ

MMBZ6V2ALT1G

onsemiIn Stock: 77270MMBZ6V2ALT1G Datasheet

SimilarRFQ

MMBZ6V2AL,215

Nexperia USA Inc.In Stock: 36324MMBZ6V2AL,215 Datasheet

SimilarRFQ

SP0502BAHTG

Littelfuse Inc.In Stock: 53186SP0502BAHTG Datasheet

SimilarRFQ

SP1305-02HTG

Littelfuse Inc.In Stock: 6440SP1305-02HTG Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution for the MMBZ6V2ALT3G is determined by the following critical electrical and mechanical parameters:

Primary Substitution Criteria:

• Voltage - Reverse Standoff (Typ): 3V
• Voltage - Clamping (Max) @ Ipp: 8.7V
• Current - Peak Pulse (10/1000µs): 2.76A
• Package / Case: SOT-23-3 (TO-236)
• Unidirectional Channels: 2
• Type: Zener

Direct Equivalents maintain identical electrical specifications and package configuration, differing only in packaging format (Tape & Reel vs. Cut Tape) or manufacturer variant designation.

Similar Alternatives share the same voltage clamping and standoff characteristics but may originate from different manufacturers or have minor variations in peak pulse current specifications or operating temperature ranges. These parts are electrically compatible for the same protection function.

Limited Compatibility Alternatives have different voltage or current ratings and are included for reference only where application requirements permit deviation from the original specification.

Parameter Comparison

Engineering Selection Recommendations

Recommended Direct Replacements:

SZMMBZ6V2ALT1G and MMBZ6V2ALT1G are the primary substitutes for MMBZ6V2ALT3G. Both are manufactured by onsemi with active product status, identical electrical specifications, and AEC-Q101 automotive qualification. Selection between these two depends on packaging requirements: SZMMBZ6V2ALT1G is supplied in Tape & Reel format, while MMBZ6V2ALT1G is available in Cut Tape and Digi-Reel® format.

MMBZ6V2AL,215 from Nexperia USA Inc. provides an alternative from a different manufacturer while maintaining equivalent electrical performance and active product status with AEC-Q101 qualification. This part is supplied in Tape & Reel format.

Alternative Consideration:

SP0502BAHTG (Littelfuse Inc.) and SP1305-02HTG (Littelfuse Inc.) are included as alternatives only where application requirements permit deviation from the original 3V standoff and 8.7V clamping specifications. SP0502BAHTG operates at 5.5V standoff with 8.5V clamping, while SP1305-02HTG operates at 5V standoff with 14.6V clamping and higher peak pulse current (5A). These parts are not direct electrical equivalents and should be selected only when circuit design allows for different voltage protection thresholds.

Frequently Asked Questions (FAQ)

Q: Can SZMMBZ6V2ALT1G directly replace MMBZ6V2ALT3G?

A: Yes. SZMMBZ6V2ALT1G is a direct electrical equivalent with identical voltage and current specifications. The primary difference is packaging format: SZMMBZ6V2ALT1G is supplied in Tape & Reel (TR) format, while the original part number does not specify a packaging format. Both are manufactured by onsemi and maintain the same SOT-23-3 package configuration.

Q: What is the difference between MMBZ6V2ALT1G and SZMMBZ6V2ALT1G?

A: Both parts are onsemi products with identical electrical specifications (3V standoff, 8.7V clamping, 2.76A peak pulse). The difference is packaging: MMBZ6V2ALT1G is supplied in Cut Tape (CT) & Digi-Reel® format, while SZMMBZ6V2ALT1G is supplied in Tape & Reel (TR) format. Selection depends on your assembly process requirements.

Q: Is MMBZ6V2AL,215 from Nexperia compatible with the original onsemi part?

A: Yes. MMBZ6V2AL,215 maintains identical electrical specifications and SOT-23-3 package configuration. It is manufactured by Nexperia USA Inc. and carries AEC-Q101 automotive qualification. The part is supplied in Tape & Reel format.

Q: Can I use SP0502BAHTG or SP1305-02HTG as replacements?

A: These Littelfuse parts have different electrical specifications and are not direct equivalents. SP0502BAHTG operates at 5.5V standoff (vs. 3V) with 8.5V clamping, and SP1305-02HTG operates at 5V standoff with 14.6V clamping and 5A peak pulse current. Use these only if your circuit design permits different voltage protection thresholds.

Q: What certifications apply to the substitute parts?

A: SZMMBZ6V2ALT1G, MMBZ6V2ALT1G, and MMBZ6V2AL,215 all carry AEC-Q101 automotive qualification. SP0502BAHTG and SP1305-02HTG are RoHS3 compliant. All parts listed are REACH Unaffected and classified as EAR99 for export control purposes.

Q: Are all substitute parts RoHS compliant?

A: Yes. All substitute parts listed are RoHS3 compliant. Moisture Sensitivity Level (MSL) is 1 (Unlimited) for all parts, indicating no moisture sensitivity restrictions.

Q: What is the operating temperature range for each substitute?

A: SZMMBZ6V2ALT1G, MMBZ6V2ALT1G, and MMBZ6V2AL,215 operate from -55°C to 150°C (junction temperature for onsemi parts, ambient for Nexperia). SP0502BAHTG operates from -40°C to 85°C (ambient), while SP1305-02HTG operates from -40°C to 125°C (ambient). Verify compatibility with your application's thermal requirements.