MMBZ20VAL-7-F Equivalent & Substitute Parts

Part Overview

The MMBZ20VAL-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 17V reverse standoff voltage with 28V maximum clamping voltage and 1.4A peak pulse current capability in a SOT-23-3 package. The part is currently obsolete, making equivalent substitutes necessary for new designs and ongoing production requirements.

Substiute Parts

MMBZ20VAL-7-F

Diodes IncorporatedIn Stock: 862MMBZ20VAL-7-F Datasheet

Current PartRFQ

MMBZ20VALT1G

onsemiIn Stock: 4427362MMBZ20VALT1G Datasheet

DirectRFQ

SZMMBZ20VALT3G

onsemiIn Stock: 25118SZMMBZ20VALT3G Datasheet

DirectRFQ

MMBZ20VAL,215

Nexperia USA Inc.In Stock: 51230MMBZ20VAL,215 Datasheet

MFR RecommendedRFQ

SZMMBZ20VALT1G

onsemiIn Stock: 20428SZMMBZ20VALT1G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MMBZ20VAL-7-F is determined by electrical and mechanical parameter matching across the following criteria:

Critical Matching Parameters:

• Voltage - Reverse Standoff: 17V
• Voltage - Breakdown (Min): 19V
• Voltage - Clamping (Max) @ Ipp: 28V
• Current - Peak Pulse (10/1000µs): 1.4A
• Power - Peak Pulse: 40W
• Type: Zener, Unidirectional (2 channels)
• Package: SOT-23-3 / TO-236-3 / SC-59
• Mounting: Surface Mount

All substitute parts listed maintain identical electrical specifications and package compatibility. Variations in operating temperature range and product status (active vs. obsolete) do not affect functional substitution. Automotive-grade variants with AEC-Q101 qualification provide enhanced reliability for automotive applications while maintaining full electrical equivalence.

Parameter Comparison

Engineering Selection Recommendations

For Standard Applications: MMBZ20VALT1G (onsemi) provides direct electrical equivalence with active product status and standard industrial qualification. This part is suitable for general-purpose overvoltage protection where automotive-grade certification is not required.

For Automotive Applications: SZMMBZ20VALT3G (onsemi) and SZMMBZ20VALT1G (onsemi) are automotive-grade variants with AEC-Q101 qualification, meeting enhanced reliability requirements for automotive circuit protection. MMBZ20VAL,215 (Nexperia) offers an alternative automotive-qualified option with equivalent electrical performance.

For Extended Temperature Range: The original MMBZ20VAL-7-F specifies -65°C to 150°C operating range. All active substitutes operate within -55°C to 150°C, which covers standard industrial and automotive temperature requirements. Applications requiring operation below -55°C require evaluation against specific design constraints.

Packaging Considerations: All substitute parts are available in SOT-23-3 surface-mount packaging with identical pinout and footprint compatibility. Tape & Reel (TR) packaging is standard for high-volume production; Cut Tape (CT) & Digi-Reel® options are available for lower-volume requirements.

Frequently Asked Questions (FAQ)

Q: Can MMBZ20VALT1G directly replace MMBZ20VAL-7-F in existing designs? A: Yes. Both parts share identical electrical specifications (17V standoff, 28V clamping, 1.4A peak pulse) and SOT-23-3 package geometry. The primary difference is product status: MMBZ20VAL-7-F is obsolete while MMBZ20VALT1G is active production.

Q: What is the difference between standard and automotive-grade variants? A: Automotive-grade parts (SZMMBZ20VALT3G, SZMMBZ20VALT1G, MMBZ20VAL,215) carry AEC-Q101 qualification, indicating compliance with automotive reliability and testing standards. Electrical performance is identical to standard variants. Selection depends on application requirements, not electrical function.

Q: Are there package differences between substitute parts? A: All parts use SOT-23-3 surface-mount packaging with identical pinout. Packaging format differs (Tape & Reel vs. Cut Tape & Digi-Reel®) based on volume requirements but does not affect electrical or mechanical compatibility.

Q: Does the operating temperature range difference affect substitution? A: The original part specifies -65°C to 150°C; substitutes specify -55°C to 150°C. For applications operating above -55°C, this difference is not relevant. Applications requiring operation below -55°C must evaluate specific design requirements against the narrower temperature range.

Q: Which substitute offers the best availability? A: MMBZ20VALT1G (onsemi) shows the highest inventory level (4,427,300 pcs) among active substitutes, providing optimal supply chain availability for production requirements.

Q: Can I use MMBZ20VAL,215 (Nexperia) as a substitute? A: Yes. MMBZ20VAL,215 provides full electrical equivalence with AEC-Q101 automotive qualification. The TO-236AB package designation is equivalent to SOT-23-3 with identical pinout and footprint.