MMBZ12VALFHT116 Equivalent & Substitute Parts

Part Overview

The MMBZ12VALFHT116 is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Rohm Semiconductor, designed for surface mount applications in automotive-grade circuits. This component provides transient overvoltage protection with an 8.5V reverse standoff voltage and 17V maximum clamping voltage. The part is currently in active production status with AEC-Q101 automotive qualification and ROHS3 compliance. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are required due to inventory constraints, supply chain considerations, or design flexibility needs.

Substiute Parts

MMBZ12VALFHT116

Rohm SemiconductorIn Stock: 1128MMBZ12VALFHT116 Datasheet

Current PartRFQ

MMBZ12VALYFHT116

Rohm SemiconductorIn Stock: 3990MMBZ12VALYFHT116 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MMBZ12VALFHT116 is determined by strict equivalence across the following critical electrical and mechanical parameters:

Voltage specifications must match exactly: Reverse Standoff Voltage of 8.5V (Max), Breakdown Voltage minimum of 11.4V, and Clamping Voltage maximum of 17V at peak pulse current.

Current and power ratings must be identical: Peak Pulse Current of 2.35A at 10/1000µs pulse width and Peak Pulse Power of 40W.

Thermal and compliance requirements must be maintained: Operating Temperature of 150°C (TJ), Automotive Grade classification, and AEC-Q101 qualification.

Mounting and packaging must be compatible: Surface Mount technology with TO-236-3, SC-59, or SOT-23-3 package designation.

Environmental compliance must be preserved: ROHS3 compliance and MSL 1 rating.

The MMBZ12VALYFHT116 qualifies as a substitute based on these criteria, with the distinction that it provides dual-channel configuration (2 unidirectional channels) in a SOT-23 package variant, while maintaining all specified electrical performance parameters and automotive certifications.

Parameter Comparison

Engineering Selection Recommendations

Both the MMBZ12VALFHT116 and MMBZ12VALYFHT116 maintain active production status with identical automotive-grade classification and AEC-Q101 qualification. Selection between these parts is based on circuit topology requirements and packaging availability.

The MMBZ12VALFHT116 (single-channel configuration) is appropriate for applications requiring unidirectional transient suppression on a single signal line.

The MMBZ12VALYFHT116 (dual-channel configuration) is appropriate for applications requiring protection on two independent signal lines or differential pair configurations within the same package footprint.

Both parts satisfy identical electrical performance specifications, thermal operating ranges, and regulatory compliance requirements. Substitution between these parts does not compromise circuit protection performance when channel count requirements are met by the selected variant.

Frequently Asked Questions (FAQ)

Q: Can MMBZ12VALYFHT116 replace MMBZ12VALFHT116 in any application?

A: Substitution is valid only when the circuit design accommodates dual-channel configuration. The MMBZ12VALYFHT116 provides two independent protection channels, while the MMBZ12VALFHT116 provides one. If the application requires single-channel protection only, the dual-channel part may introduce unintended circuit behavior. Circuit schematic review is necessary to confirm compatibility.

Q: Are the electrical protection characteristics identical between these parts?

A: Yes. Both parts provide identical voltage clamping (17V maximum), peak pulse current (2.35A), and power dissipation (40W) specifications. The difference is in channel count, not protection performance per channel.

Q: Do both parts meet automotive qualification requirements?

A: Yes. Both the MMBZ12VALFHT116 and MMBZ12VALYFHT116 carry Automotive Grade classification and AEC-Q101 qualification, meeting automotive industry reliability and quality standards.

Q: What is the difference between SSD3 and SOT-23 package designations?

A: Both designations refer to surface mount packages compatible with TO-236-3 and SC-59 standards. SSD3 and SOT-23 are supplier-specific package identifiers for the same physical form factor. Pin compatibility and PCB footprint requirements remain equivalent.

Q: Are moisture sensitivity levels the same for both parts?

A: Yes. Both parts carry MSL 1 (Unlimited) rating, indicating no moisture sensitivity restrictions for storage, handling, or assembly processes.