MMBZ9V1AL TVS Diode 6V Transient Voltage Suppressor Equivalent & Substitute Parts

Part Overview

The MMBZ9V1AL is a unidirectional Zener-type transient voltage suppressor (TVS) diode manufactured by Diodes Incorporated, designed for general-purpose overvoltage protection in surface-mount applications. This component features a 6V reverse standoff voltage, 14V maximum clamping voltage, and 1.7A peak pulse current capability in a compact SOT-23-3 package. The original part is discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives from active manufacturers to maintain design continuity and ensure component availability for production and repair applications.

Substiute Parts

MMBZ9V1AL-7

Diodes IncorporatedIn Stock: 12494MMBZ9V1AL-7 Datasheet

Current PartRFQ

SZMMBZ9V1ALT3G

onsemiIn Stock: 505377SZMMBZ9V1ALT3G Datasheet

DirectRFQ

MMBZ9V1AL,215

Nexperia USA Inc.In Stock: 19761MMBZ9V1AL,215 Datasheet

MFR RecommendedRFQ

MMBZ9V1ALT1G

onsemiIn Stock: 38485MMBZ9V1ALT1G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the MMBZ9V1AL are qualified based on electrical parameter equivalence and mechanical compatibility. The critical parameters determining substitutability are:

• Voltage - Reverse Standoff: 6V (Typ)
• Voltage - Breakdown (Min): 8.65V
• Voltage - Clamping (Max) @ Ipp: 14V
• Current - Peak Pulse (10/1000µs): 1.7A
• Power - Peak Pulse: 24W
• Package / Case: SOT-23-3 (TO-236-3, SC-59)
• Mounting Type: Surface Mount
• Unidirectional Channels: 2

All identified substitute parts maintain identical electrical specifications across these parameters, ensuring functional interchangeability in circuit applications. Package and pinout compatibility is preserved across all alternatives.

Parameter Comparison

Engineering Selection Recommendations

All three substitute parts provide direct functional equivalence to the MMBZ9V1AL across all critical electrical parameters. Selection among alternatives should prioritize product status and regulatory compliance:

SZMMBZ9V1ALT3G (onsemi) and MMBZ9V1ALT1G (onsemi) are both active products with ROHS3 compliance and AEC-Q101 automotive qualification (SZMMBZ9V1ALT3G). MMBZ9V1AL,215 (Nexperia) is an active product with ROHS3 compliance and AEC-Q101 automotive qualification, offering the highest inventory availability at 19,750 units.

For applications requiring automotive-grade components, SZMMBZ9V1ALT3G and MMBZ9V1AL,215 are qualified options. For general-purpose applications, all three substitutes are suitable. The original MMBZ9V1AL should not be selected for new designs due to discontinued status and RoHS non-compliance.

Frequently Asked Questions (FAQ)

Q: Can SZMMBZ9V1ALT3G, MMBZ9V1AL,215, and MMBZ9V1ALT1G be used interchangeably with MMBZ9V1AL?

A: Yes. All three parts maintain identical electrical specifications for voltage standoff, breakdown, clamping, peak pulse current, and power dissipation. Package and pinout are identical (SOT-23-3), enabling direct substitution without circuit modification.

Q: What is the difference between the substitute parts?

A: The primary differences are manufacturer (onsemi vs. Nexperia), product status (all active), and certifications. SZMMBZ9V1ALT3G includes AEC-Q101 automotive qualification and is supplied in Tape & Reel packaging. MMBZ9V1AL,215 also includes AEC-Q101 qualification. MMBZ9V1ALT1G is a general-purpose variant without automotive qualification. All three are ROHS3 compliant.

Q: Are there packaging differences between these parts?

A: All parts use SOT-23-3 (TO-236) surface-mount packaging. SZMMBZ9V1ALT3G and MMBZ9V1AL,215 are supplied in Tape & Reel format, while MMBZ9V1ALT1G is also available in Tape & Reel. No package conversion is required for substitution.

Q: Which substitute should be selected for new designs?

A: For automotive applications, SZMMBZ9V1ALT3G or MMBZ9V1AL,215 are recommended due to AEC-Q101 qualification. For general-purpose applications, MMBZ9V1ALT1G is suitable. All three are active products with current manufacturing support and ROHS3 compliance.

Q: Is the operating temperature range difference significant?

A: The original MMBZ9V1AL specifies -65 to 150°C, while substitutes specify -55 to 150°C. For applications operating below -55°C, the original part specification is required. For standard industrial and commercial temperature ranges, all substitutes are suitable.