MMBZ33VAL-7-F Equivalent & Substitute Parts

Part Overview

The MMBZ33VAL-7-F is a transient voltage suppressor (TVS) diode manufactured by Diodes Incorporated, designed for general-purpose overvoltage protection in surface-mount applications. This component features a 26V reverse standoff voltage with a 46V maximum clamping voltage and 870mA peak pulse current capability in a SOT-23-3 package. The part is currently obsolete, making equivalent and substitute parts necessary for ongoing design support and production requirements.

Key Parameters

Parameter	Value
Voltage - Reverse Standoff (Typ)	26V
Voltage - Breakdown (Min)	31.35V
Voltage - Clamping (Max) @ Ipp	46V
Current - Peak Pulse (10/1000µs)	870mA
Power - Peak Pulse	40W
Type	Zener
Unidirectional Channels	2
Package / Case	TO-236-3, SC-59, SOT-23-3
Mounting Type	Surface Mount
Operating Temperature	-65°C ~ 150°C (TJ)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the MMBZ33VAL-7-F is determined by strict equivalence across the following critical parameters:

Voltage - Reverse Standoff: 26V
Voltage - Breakdown (Min): 31.35V
Voltage - Clamping (Max) @ Ipp: 46V
Current - Peak Pulse (10/1000µs): 870mA
Power - Peak Pulse: 40W
Type: Zener, Unidirectional (2 channels)
Package: SOT-23-3 (TO-236-3, SC-59)
Mounting: Surface Mount
RoHS3 Compliance and MSL Level 1

All identified substitute parts maintain identical electrical specifications and package compatibility. Differences exist only in manufacturer, product status (active vs. obsolete), packaging format (Cut Tape, Tape & Reel), and optional automotive qualification grades.

Parameter Comparison

Parameter	MMBZ33VAL-7-F (Diodes Inc.)	MMBZ33VALT1G (onsemi)	SZMMBZ33VALT1G (onsemi)	MMBZ33VAL,215 (Nexperia)	SZMMBZ33VALT3G (onsemi)
Manufacturer	Diodes Incorporated	onsemi	onsemi	Nexperia USA Inc.	onsemi
Product Status	Obsolete	Active	Active	Active	Active
Voltage - Reverse Standoff (Typ)	26V	26V	26V	26V (Max)	26V
Voltage - Breakdown (Min)	31.35V	31.35V	31.35V	31.35V	31.35V
Voltage - Clamping (Max) @ Ipp	46V	46V	46V	46V	46V
Current - Peak Pulse (10/1000µs)	870mA	870mA	870mA	870mA	870mA
Power - Peak Pulse	40W	40W	40W	40W	40W
Operating Temperature	-65°C ~ 150°C (TJ)	-55°C ~ 150°C (TJ)	-55°C ~ 150°C (TJ)	-55°C ~ 150°C (TA)	-55°C ~ 150°C (TJ)
Package / Case	TO-236-3, SC-59, SOT-23-3	TO-236-3, SC-59, SOT-23-3	TO-236-3, SC-59, SOT-23-3	TO-236-3, SC-59, SOT-23-3	TO-236-3, SC-59, SOT-23-3
Supplier Device Package	SOT-23-3	SOT-23-3 (TO-236)	SOT-23-3 (TO-236)	TO-236AB	SOT-23-3 (TO-236)
Packaging Format	-	Cut Tape (CT) & Digi-Reel®	Tape & Reel (TR)	Tape & Reel (TR)	Tape & Reel (TR)
Automotive Grade	-	-	Automotive	Automotive	Automotive
AEC-Q101 Qualification	-	-	Yes	Yes	Yes
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

All substitute parts listed maintain full electrical and mechanical compatibility with the MMBZ33VAL-7-F. Selection should be based on the following criteria:

For Standard Applications: MMBZ33VALT1G (onsemi) provides an active, direct replacement with identical specifications and standard packaging options (Cut Tape and Digi-Reel).

For Automotive Applications: SZMMBZ33VALT1G and SZMMBZ33VALT3G (onsemi) or MMBZ33VAL,215 (Nexperia) are qualified to AEC-Q101 automotive standards and carry automotive-grade designations, suitable for automotive circuit protection requirements.

For High-Volume Production: Tape & Reel (TR) packaging options (SZMMBZ33VALT1G, SZMMBZ33VALT3G, MMBZ33VAL,215) are recommended for automated assembly processes.

For Mixed-Volume Requirements: MMBZ33VALT1G offers both Cut Tape and Digi-Reel packaging flexibility.

All substitute parts are ROHS3 compliant and carry MSL Level 1 (Unlimited) moisture sensitivity ratings, matching the original part's environmental specifications.

Frequently Asked Questions (FAQ)

Q: Can MMBZ33VALT1G directly replace MMBZ33VAL-7-F in existing designs?

A: Yes. MMBZ33VALT1G maintains identical electrical specifications (26V standoff, 46V clamping, 870mA peak pulse) and SOT-23-3 package compatibility. The primary difference is product status (active vs. obsolete) and manufacturer (onsemi vs. Diodes Incorporated).

Q: What is the difference between MMBZ33VALT1G and SZMMBZ33VALT1G?

A: Both are onsemi products with identical electrical specifications. SZMMBZ33VALT1G carries automotive-grade designation and AEC-Q101 qualification, while MMBZ33VALT1G is standard-grade. Packaging differs: MMBZ33VALT1G offers Cut Tape and Digi-Reel options, while SZMMBZ33VALT1G is Tape & Reel only.

Q: Are automotive-qualified versions necessary for non-automotive applications?

A: No. Automotive-qualified parts (SZMMBZ33VALT1G, SZMMBZ33VALT3G, MMBZ33VAL,215) meet additional qualification standards but are functionally equivalent to standard-grade alternatives. Selection depends on application requirements and procurement specifications.

Q: What is the operating temperature difference between the original part and substitutes?

A: MMBZ33VAL-7-F operates from -65°C to 150°C (TJ), while all active substitutes operate from -55°C to 150°C (TJ or TA). This 10°C difference at the lower limit should be evaluated for applications requiring extended low-temperature performance.

Q: Can these parts be used interchangeably in automated assembly?

A: Yes, all parts use identical SOT-23-3 package geometry. Tape & Reel packaging (SZMMBZ33VALT1G, SZMMBZ33VALT3G, MMBZ33VAL,215) is optimized for automated pick-and-place assembly. Cut Tape and Digi-Reel formats (MMBZ33VALT1G) require manual or semi-automated handling.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts are ROHS3 compliant with MSL Level 1 (Unlimited) moisture sensitivity, matching the original MMBZ33VAL-7-F specifications.

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