SMBJ85AHM3_A/I Equivalent & Substitute Parts

Part Overview

The SMBJ85AHM3_A/I is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division. This component is designed for telecom applications requiring transient voltage protection in surface mount configurations. The part operates with an 85V reverse standoff voltage and provides 137V maximum clamping voltage at peak pulse current. The SMBJ85AHM3_A/I is classified as obsolete, making identification of active equivalent parts essential for ongoing design support and procurement.

Substiute Parts

SMBJ85AHM3_A/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 1083SMBJ85AHM3_A/I Datasheet

Current PartRFQ

SMBJ85AHM3_B/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 854SMBJ85AHM3_B/I Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SMBJ85AHM3_A/I is determined by strict equivalence across the following critical parameters:

• Voltage - Reverse Standoff (Typ): 85V
• Voltage - Breakdown (Min): 94.4V
• Voltage - Clamping (Max) @ Ipp: 137V
• Current - Peak Pulse (10/1000µs): 4.4A
• Power - Peak Pulse: 600W
• Unidirectional Channels: 1
• Package / Case: DO-214AA, SMB
• Operating Temperature Range: -55°C ~ 150°C (TJ)
• Automotive Grade and AEC-Q101 Qualification

The SMBJ85AHM3_B/I is the manufacturer-recommended substitute, maintaining identical electrical specifications and automotive qualification while transitioning from obsolete to active product status.

Parameter Comparison

Engineering Selection Recommendations

The SMBJ85AHM3_B/I is the direct equivalent for the obsolete SMBJ85AHM3_A/I. Both parts maintain identical electrical performance specifications and automotive-grade qualification with AEC-Q101 certification. The transition from obsolete to active product status makes the SMBJ85AHM3_B/I the appropriate selection for new designs and ongoing production requirements. Both parts comply with ROHS3 and REACH standards, ensuring regulatory alignment for telecom applications.

Frequently Asked Questions (FAQ)

Q: Can SMBJ85AHM3_B/I be used as a direct replacement for SMBJ85AHM3_A/I?

A: Yes. The SMBJ85AHM3_B/I is the manufacturer-recommended substitute with identical electrical specifications, package configuration, and automotive qualification. The primary difference is product status: the A/I variant is obsolete while the B/I variant is active.

Q: Are there any differences in packaging between these parts?

A: Both parts use the DO-214AA (SMB) surface mount package. The SMBJ85AHM3_A/I is supplied in standard packaging, while the SMBJ85AHM3_B/I is available in Tape & Reel (TR) format for automated assembly processes.

Q: Do both parts meet automotive qualification requirements?

A: Yes. Both the SMBJ85AHM3_A/I and SMBJ85AHM3_B/I are automotive-grade components with AEC-Q101 qualification, suitable for telecom applications requiring transient voltage suppression.

Q: What are the critical electrical parameters for substitution?

A: Substitution is based on matching the 85V reverse standoff voltage, 137V maximum clamping voltage, 4.4A peak pulse current, and 600W peak pulse power rating. Both parts maintain these specifications identically.

Q: Are there any compliance or regulatory differences?

A: Both parts are ROHS3 compliant and REACH unaffected. No regulatory differences exist between the two variants.