Equivalent & Substitute Parts for SMBJ8.5AHM3_A/I

Part Overview

The SMBJ8.5AHM3_A/I is a transient voltage suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division. It is designed for surface-mount applications in the DO-214AA (SMB) package and provides robust overvoltage protection for telecom applications. This device is qualified to AEC-Q101 standards, automotive grade, and RoHS3 compliant. The SMBJ8.5AHM3_A/I is classified as obsolete, necessitating the identification of directly equivalent or substitute parts to ensure continued compatibility and supply in both current and legacy circuit designs.

Substiute Parts

SMBJ8.5AHM3_A/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 821SMBJ8.5AHM3_A/I Datasheet

Current PartRFQ

SMBJ8.5AHM3_B/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 1193SMBJ8.5AHM3_B/I Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitutes are determined strictly according to equivalence in key electrical parameters, mechanical package, regulatory compliance, qualification, and application suitability. Only those parts matching in the following mandatory fields are considered substitutes:

• Type (Zener, Unidirectional)
• Channel configuration (1 Channel)
• Reverse Standoff Voltage (8.5V)
• Breakdown Voltage (Min 9.44V)
• Clamping Voltage (Max 14.4V @ Ipp)
• Peak Pulse Current (41.7A)
• Peak Pulse Power (600W)
• Package/Case (DO-214AA, SMB), Mounting Type, Supplier Device Package
• Operating Temperature Range (-55°C ~ 150°C TJ)
• Grade (Automotive) and Qualification (AEC-Q101)
• RoHS/REACH status
• Application suitability (Telecom)

Parameter Comparison

Engineering Selection Recommendations

The SMBJ8.5AHM3_A/I is obsolete, with no ongoing production. The SMBJ8.5AHM3_B/I from the same manufacturer is an active, functionally identical replacement that matches all critical regulatory and application-specific criteria, including AEC-Q101 qualification, automotive grade, RoHS3 compliance, and REACH unaffected status. Both devices utilize the DO-214AA (SMB) package, ensuring mechanical compatibility in existing PCB layouts.

Frequently Asked Questions (FAQ)

Q1: What technical parameters must be matched when selecting substitutes for SMBJ8.5AHM3_A/I?
A1: Substitutes must match the type (Zener, unidirectional), reverse standoff voltage (8.5V), breakdown voltage (minimum 9.44V), clamping voltage (maximum 14.4V @ Ipp), peak pulse current (41.7A), peak pulse power (600W), package (DO-214AA, SMB), operating temperature range, and regulatory compliance.

Q2: Can SMBJ8.5AHM3_B/I be used without circuit modification?
A2: SMBJ8.5AHM3_B/I shares identical electrical and mechanical specifications and packaging with SMBJ8.5AHM3_A/I. No circuit modification is necessary.

Q3: Are package and mounting compatibility guaranteed for these substitutes?
A3: Both SMBJ8.5AHM3_A/I and SMBJ8.5AHM3_B/I are supplied in the DO-214AA (SMB) surface-mount package, ensuring full mechanical and mounting compatibility.

Q4: Does substitute selection affect compliance or qualification status?
A4: Both the main part and the substitute are AEC-Q101 qualified, automotive grade, RoHS3 compliant, and REACH unaffected, maintaining compliance in regulated and automotive applications.

Q5: Are there any differences in electrical performance between the SMBJ8.5AHM3_A/I and SMBJ8.5AHM3_B/I?
A5: All provided electrical performance parameters are equivalent between SMBJ8.5AHM3_A/I and SMBJ8.5AHM3_B/I.