SMBJ85D-M3/I Equivalent & Substitute Parts

Part Overview

The SMBJ85D-M3/I is a unidirectional Transient Voltage Suppressor (TVS) diode from Vishay General Semiconductor - Diodes Division, part of the TransZorb® series. This surface mount component is designed for general-purpose transient voltage suppression applications. The device is currently in active production status with 809 units in stock. Alternative equivalent parts may be required due to supply chain availability, inventory levels, or specific procurement requirements while maintaining identical electrical and mechanical performance characteristics.

Substiute Parts

SMBJ85D-M3/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 884SMBJ85D-M3/I Datasheet

Current PartRFQ

SMBJ85A-E3/5B

Vishay General Semiconductor - Diodes DivisionIn Stock: 7105SMBJ85A-E3/5B Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SMBJ85D-M3/I is determined by the following critical parameters:

• Voltage - Reverse Standoff (Typ): 85V
• Voltage - Clamping (Max) @ Ipp: Maximum 135V to 137V range
• Current - Peak Pulse (10/1000µs): 4.4A to 4.46A range
• Package / Case: DO-214AA, SMB (surface mount)
• Mounting Type: Surface Mount
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level: 1 (Unlimited)

The SMBJ85A-E3/5B meets all substitution criteria within the allowed parameter tolerances for this product category. Both parts share identical reverse standoff voltage, comparable clamping voltage and peak pulse current specifications, and identical packaging, mounting type, and compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

Both the SMBJ85D-M3/I and SMBJ85A-E3/5B are active production components from Vishay General Semiconductor - Diodes Division. Both parts carry ROHS3 compliance and MSL 1 (Unlimited) ratings, meeting identical regulatory and environmental requirements. The SMBJ85A-E3/5B offers higher inventory availability (7008 units in stock versus 809 units), making it suitable for high-volume procurement scenarios. Selection between these parts should be based on supply chain requirements and inventory availability, as both meet all specified electrical and mechanical parameters for general-purpose TVS diode applications.

Frequently Asked Questions (FAQ)

Q: Can SMBJ85A-E3/5B be used as a direct replacement for SMBJ85D-M3/I?

A: Yes. Both parts share identical reverse standoff voltage (85V), comparable clamping voltage (135V vs 137V), equivalent peak pulse current (4.46A vs 4.4A), and identical package, mounting type, and compliance certifications. The parts are electrically and mechanically interchangeable within the specified parameter tolerances.

Q: What are the key differences between these two parts?

A: The primary differences are minor variations in voltage breakdown minimum (95.7V vs 94.4V) and clamping voltage maximum (135V vs 137V), both within acceptable substitution ranges. The SMBJ85A-E3/5B has higher inventory availability. All other specifications are identical.

Q: Are both parts suitable for the same applications?

A: Yes. Both parts are rated for general-purpose transient voltage suppression with identical operating temperature ranges (-55°C to 150°C), power ratings (600W peak pulse), and surface mount DO-214AA packaging. Application compatibility is maintained across both parts.

Q: What is the significance of the DO-214AA package designation?

A: DO-214AA is the industry-standard surface mount package for small signal diodes and TVS devices. Both parts use this identical package, ensuring mechanical and electrical compatibility on PCB layouts without requiring design modifications.

Q: Are there any compliance or certification differences?

A: No. Both parts carry identical ROHS3 compliance status and MSL 1 (Unlimited) moisture sensitivity ratings, meeting the same regulatory and environmental requirements for industrial and commercial applications.