MMBZ18VALFHT116 Equivalent & Substitute Parts

Part Overview

The MMBZ18VALFHT116 is a transient voltage suppressor (TVS) diode manufactured by Rohm Semiconductor, designed for surface mount applications in automotive-grade circuits. This dual-channel Zener diode provides 25V clamping protection with a peak pulse current rating of 1.6A and is qualified to AEC-Q101 automotive standards. The part is currently active in production with 3130 units in stock. Substitute parts are identified when electrical characteristics, mechanical compatibility, and qualification standards remain equivalent across the product line.

Substiute Parts

MMBZ18VALFHT116

Rohm SemiconductorIn Stock: 3168MMBZ18VALFHT116 Datasheet

Current PartRFQ

MMBZ18VALYFHT116

Rohm SemiconductorIn Stock: 3805MMBZ18VALYFHT116 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the MMBZ18VALFHT116 are qualified based on strict equivalence across the following critical parameters:

• Voltage - Reverse Standoff (Typ): 14.5V (Max)
• Voltage - Breakdown (Min): 17.1V
• Voltage - Clamping (Max) @ Ipp: 25V
• Current - Peak Pulse (10/1000µs): 1.6A
• Power - Peak Pulse: 40W
• Unidirectional Channels: 2
• Type: Zener
• Operating Temperature: 150°C (TJ)
• Grade: Automotive
• Qualification: AEC-Q101
• Mounting Type: Surface Mount
• Package / Case: TO-236-3, SC-59, SOT-23-3
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level (MSL): 1 (Unlimited)

Substitutes must maintain identical electrical performance characteristics and automotive qualification status. Packaging format variations (tape & reel versus bulk) do not affect functional equivalence.

Parameter Comparison

Engineering Selection Recommendations

Both the MMBZ18VALFHT116 and MMBZ18VALYFHT116 are active production parts from Rohm Semiconductor with identical electrical specifications and automotive-grade AEC-Q101 qualification. Selection between these parts is determined by packaging requirements: the MMBZ18VALFHT116 is supplied in standard packaging, while the MMBZ18VALYFHT116 is available in tape & reel format. Both parts maintain ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1), making them suitable for automotive applications without additional handling restrictions.

Frequently Asked Questions (FAQ)

Q: Can MMBZ18VALYFHT116 replace MMBZ18VALFHT116 in production?

A: Yes. Both parts are electrically identical with matching voltage ratings (14.5V standoff, 17.1V breakdown, 25V clamping), current ratings (1.6A peak pulse), and power dissipation (40W). Both carry AEC-Q101 automotive qualification and ROHS3 compliance. The difference is packaging format only.

Q: What is the difference between these two part numbers?

A: The MMBZ18VALFHT116 and MMBZ18VALYFHT116 differ only in packaging delivery method. The VALYFHT116 variant is supplied in tape & reel format, while the VALFHT116 is supplied in standard packaging. Electrical performance and qualification status are identical.

Q: Are these parts interchangeable on the PCB?

A: Yes. Both parts use the same SOT-23-3 package footprint and have identical pin configurations. No PCB layout modifications are required for substitution.

Q: Do these parts require different handling or storage?

A: No. Both parts carry MSL 1 (Unlimited) moisture sensitivity rating, indicating no special moisture control requirements during storage or handling.

Q: What applications are these TVS diodes suitable for?

A: These dual-channel Zener TVS diodes are designed for transient voltage suppression in automotive circuits. The 25V clamping voltage and 1.6A peak pulse current rating make them suitable for protecting sensitive components from voltage transients in automotive electrical systems.