MMBZ27VALT3G Equivalent & Substitute Parts

Part Overview

The MMBZ27VALT3G is a 22V Zener transient voltage suppressor (TVS) diode manufactured by onsemi, designed for general-purpose overvoltage protection in surface-mount applications. This unidirectional TVS diode features a 40V maximum clamping voltage and 1A peak pulse current rating in a compact SOT-23-3 package. The part is currently active in production with full RoHS3 compliance and unlimited moisture sensitivity rating (MSL 1).

Equivalent and substitute parts are necessary when the primary part number becomes unavailable, when alternative packaging formats are required for manufacturing processes, or when automotive-grade qualification is mandated for specific applications.

Substiute Parts

MMBZ27VALT3G

onsemiIn Stock: 34170MMBZ27VALT3G Datasheet

Current PartRFQ

SZMMBZ27VALT1G

onsemiIn Stock: 1005464SZMMBZ27VALT1G Datasheet

DirectRFQ

MMBZ27VAL,215

Nexperia USA Inc.In Stock: 20799MMBZ27VAL,215 Datasheet

DirectRFQ

MMBZ27VAL,235

Nexperia USA Inc.In Stock: 10862MMBZ27VAL,235 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MMBZ27VALT3G is determined by strict electrical and mechanical parameter matching:

Electrical Parameters (Must Match):

• Voltage - Reverse Standoff: 22V
• Voltage - Breakdown (Min): 25.65V
• Voltage - Clamping (Max) @ Ipp: 40V
• Current - Peak Pulse: 1A
• Power - Peak Pulse: 40W
• Operating Temperature Range: -55°C ~ 150°C

Mechanical Parameters (Must Match):

• Package / Case: TO-236-3, SC-59, SOT-23-3
• Mounting Type: Surface Mount
• Unidirectional Channels: 2

Compliance Parameters (Must Match):

• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level: 1 (Unlimited)

Substitute parts are classified as either direct equivalents (identical electrical and mechanical specifications with different packaging formats) or similar alternatives (matching core electrical parameters with automotive-grade qualification).

Parameter Comparison

Engineering Selection Recommendations

SZMMBZ27VALT1G (onsemi): This part is a direct electrical and mechanical equivalent to the MMBZ27VALT3G with identical core specifications. The primary difference is packaging format (Cut Tape & Digi-Reel® versus standard Tape & Reel) and automotive-grade qualification with AEC-Q101 certification. Selection of this part is appropriate when automotive-grade components are required or when the alternative packaging format aligns with manufacturing processes.

MMBZ27VAL,215 (Nexperia USA Inc.): This part meets all electrical and mechanical substitution criteria with identical voltage ratings, current ratings, and power dissipation. It carries automotive-grade qualification (AEC-Q101) and operates within the same temperature range. The supplier device package designation (TO-236AB) represents a compatible variant of the SOT-23-3 package. This part is suitable for applications requiring automotive-grade TVS diodes with equivalent performance characteristics.

MMBZ27VAL,235 (Nexperia USA Inc.): This part is electrically and mechanically equivalent to MMBZ27VAL,215 with identical specifications and automotive-grade AEC-Q101 qualification. Selection between MMBZ27VAL,215 and MMBZ27VAL,235 depends on inventory availability and supply chain requirements, as both parts meet identical technical criteria.

All substitute parts maintain ROHS3 compliance and MSL 1 rating, ensuring compatibility with standard surface-mount assembly processes and storage conditions.

Frequently Asked Questions (FAQ)

Q: Can SZMMBZ27VALT1G be used as a direct replacement for MMBZ27VALT3G?

A: Yes. Both parts share identical electrical specifications (22V standoff, 25.65V breakdown minimum, 40V clamping maximum, 1A peak pulse current, 40W peak power) and are housed in compatible SOT-23-3 packages. The primary difference is packaging format (Cut Tape & Digi-Reel® versus Tape & Reel) and automotive-grade qualification. Electrical performance and PCB footprint compatibility are identical.

Q: What is the difference between the onsemi and Nexperia TVS diodes?

A: Both manufacturers produce TVS diodes meeting the same electrical and mechanical specifications for this product category. The MMBZ27VAL,215 and MMBZ27VAL,235 from Nexperia are functionally equivalent to the onsemi MMBZ27VALT3G. Selection between manufacturers depends on supply availability, lead time, and procurement preferences. All parts carry ROHS3 compliance and MSL 1 rating.

Q: Are the Nexperia parts automotive-qualified?

A: Yes. Both MMBZ27VAL,215 and MMBZ27VAL,235 carry AEC-Q101 automotive qualification. The onsemi SZMMBZ27VALT1G also carries AEC-Q101 qualification. The standard-grade onsemi MMBZ27VALT3G does not specify automotive qualification but meets all electrical and mechanical requirements for general-purpose applications.

Q: Does package format affect electrical performance?

A: No. The electrical characteristics remain identical across all substitute parts. Package format differences (Tape & Reel, Cut Tape, Digi-Reel®) affect only the physical delivery and handling method during manufacturing assembly. PCB footprint and soldering requirements are compatible across all SOT-23-3 variants.

Q: Can these parts be used interchangeably in production?

A: Yes, provided that the specific packaging format and qualification requirements of your manufacturing process are met. All parts are surface-mount compatible with identical SOT-23-3 footprints. Verify that your assembly equipment and storage conditions support the specified packaging format and MSL rating (MSL 1 for all parts).