SA85A B0G TVS Diode Equivalent & Substitute Parts

Part Overview

The SA85A B0G is a unidirectional transient voltage suppressor (TVS) diode manufactured by Taiwan Semiconductor Corporation, designed for general-purpose voltage clamping applications. This component features an 85V reverse standoff voltage with a 137V maximum clamping voltage and 3.8A peak pulse current capability in a through-hole DO-204AC (DO-15) axial package.

The SA85A B0G is currently discontinued at DiGi Electronics. Identifying equivalent substitute parts ensures design continuity and maintains supply chain reliability for applications requiring identical electrical and mechanical specifications.

Substiute Parts

SA85A B0G

Taiwan Semiconductor CorporationIn Stock: 1020SA85A B0G Datasheet

Current PartRFQ

SA85A A0G

Taiwan Semiconductor CorporationIn Stock: 862SA85A A0G Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SA85A B0G are identified based on strict electrical and mechanical parameter matching. The following criteria determine substitution eligibility:

Critical Matching Parameters:

• Voltage - Reverse Standoff (Typ): 85V
• Voltage - Breakdown (Min): 94.4V
• Voltage - Clamping (Max) @ Ipp: 137V
• Current - Peak Pulse (10/1000µs): 3.8A
• Power - Peak Pulse: 500W
• Operating Temperature Range: -55°C to 175°C (TJ)
• Package / Case: DO-204AC (DO-15), Axial
• Type: Zener, Unidirectional (1 channel)
• RoHS Status: ROHS3 Compliant

Parts meeting all specified parameters are classified as direct electrical and mechanical equivalents. No parameter deviation is permitted for substitution classification.

Parameter Comparison

Engineering Selection Recommendations

The SA85A A0G serves as a direct substitute for the SA85A B0G. Both components are manufactured by Taiwan Semiconductor Corporation and share identical electrical specifications and mechanical packaging.

Selection Basis:

The SA85A A0G is classified as an active product, whereas the SA85A B0G is discontinued. All electrical parameters, including voltage ratings, current capacity, power dissipation, and operating temperature range, are identical between the two parts. Both components comply with ROHS3 and REACH requirements, ensuring regulatory alignment for new designs and production continuity.

The SA85A A0G maintains the same DO-204AC (DO-15) axial through-hole package configuration, enabling direct board-level substitution without PCB redesign or mechanical rework.

Frequently Asked Questions (FAQ)

Q: Can the SA85A A0G be used as a direct replacement for the SA85A B0G?

A: Yes. The SA85A A0G is a direct electrical and mechanical equivalent. All voltage ratings (85V standoff, 94.4V breakdown, 137V clamping), current specifications (3.8A peak pulse), power rating (500W), operating temperature range (-55°C to 175°C), and package configuration (DO-204AC axial) are identical.

Q: What is the difference between the SA85A B0G and SA85A A0G?

A: The primary difference is product status. The SA85A B0G is discontinued at DiGi Electronics, while the SA85A A0G is an active product. No electrical or mechanical differences exist between the two parts.

Q: Are there any compliance or certification differences?

A: No. Both the SA85A B0G and SA85A A0G carry identical ROHS3 compliance and REACH unaffected status. Moisture sensitivity level (MSL 1 - Unlimited) is the same for both components.

Q: Can the SA85A A0G be soldered into existing PCBs designed for the SA85A B0G?

A: Yes. The identical DO-204AC (DO-15) axial through-hole package allows direct board-level substitution without modification to PCB footprints or assembly procedures.

Q: What inventory status should be considered when selecting between these parts?

A: The SA85A B0G has 973 pieces in stock (discontinued status), while the SA85A A0G has 824 pieces in stock (active status). For new designs and long-term supply assurance, the SA85A A0G is the recommended selection.