SA70A B0G Equivalent & Substitute Parts

Part Overview

The SA70A B0G is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Taiwan Semiconductor Corporation, designed for general-purpose overvoltage protection applications. This component features a 70V reverse standoff voltage with a 113V maximum clamping voltage and 4.6A peak pulse current capability in a through-hole DO-204AC (DO-15) axial package.

The SA70A B0G is currently discontinued at DiGi Electronics. Identifying equivalent substitute parts ensures design continuity and maintains component availability for repair, maintenance, and production applications where this specific part number is no longer procurable through standard distribution channels.

Substiute Parts

SA70A B0G

Taiwan Semiconductor CorporationIn Stock: 1125SA70A B0G Datasheet

Current PartRFQ

SA70A A0G

Taiwan Semiconductor CorporationIn Stock: 1021SA70A A0G Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SA70A B0G are identified based on electrical and mechanical parameter equivalence within the TVS diode category. The substitution logic is based on the following critical parameters:

Electrical Parameters:

• Voltage - Reverse Standoff (Typ): 70V
• Voltage - Breakdown (Min): 77.8V
• Voltage - Clamping (Max) @ Ipp: 113V
• Current - Peak Pulse (10/1000µs): 4.6A
• Power - Peak Pulse: 500W
• Operating Temperature Range: -55°C to 175°C (TJ)

Mechanical Parameters:

• Package / Case: DO-204AC (DO-15) Axial
• Mounting Type: Through Hole
• Unidirectional Channels: 1

Compliance Parameters:

• RoHS Status: ROHS3 Compliant
• REACH Status: REACH Unaffected

Parts meeting all electrical, mechanical, and compliance specifications are classified as direct substitutes. Variations in product status (active versus discontinued) do not affect electrical substitutability but influence procurement availability.

Parameter Comparison

Engineering Selection Recommendations

The SA70A A0G is a direct electrical and mechanical equivalent to the SA70A B0G. Both parts share identical electrical specifications across all critical parameters: 70V reverse standoff voltage, 77.8V minimum breakdown voltage, 113V maximum clamping voltage, 4.6A peak pulse current, and 500W peak pulse power rating. Both components operate across the same temperature range (-55°C to 175°C) and are housed in identical DO-204AC (DO-15) axial through-hole packages.

Both parts maintain equivalent compliance certifications: ROHS3 compliance, REACH unaffected status, and EAR99 export classification. Moisture sensitivity levels are identical at MSL 1 (Unlimited).

The primary distinction between these parts is product status. The SA70A B0G is discontinued at DiGi Electronics, while the SA70A A0G maintains active status with current availability. For applications requiring the SA70A B0G, the SA70A A0G provides full electrical and mechanical substitutability with the advantage of active product support and ongoing inventory availability.

Frequently Asked Questions (FAQ)

Q: Can the SA70A A0G be used as a direct replacement for the SA70A B0G in existing designs?

A: Yes. The SA70A A0G is electrically and mechanically identical to the SA70A B0G across all specified parameters. Both components feature 70V reverse standoff voltage, 113V clamping voltage, 4.6A peak pulse current, and identical DO-204AC (DO-15) axial through-hole packaging. Direct substitution is supported without circuit modification.

Q: What is the difference between the SA70A B0G and SA70A A0G part numbers?

A: The part numbers differ in their suffix designations (B0G versus A0G), which typically indicate manufacturing date codes or production batches from Taiwan Semiconductor Corporation. The electrical and mechanical specifications are identical. The SA70A B0G is discontinued, while the SA70A A0G is currently active.

Q: Are both parts RoHS compliant?

A: Yes. Both the SA70A B0G and SA70A A0G are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements for electronic components.

Q: What is the operating temperature range for these TVS diodes?

A: Both parts operate across a junction temperature range of -55°C to 175°C (TJ), providing performance across industrial and extended temperature applications.

Q: Can these parts be used in power line protection applications?

A: No. Both the SA70A B0G and SA70A A0G are designated for general-purpose applications and do not include power line protection specifications.

Q: What is the peak pulse power rating?

A: Both parts are rated for 500W peak pulse power with a 10/1000µs pulse duration, supporting transient suppression in high-energy overvoltage events.

Q: Are there inventory considerations when selecting between these parts?

A: The SA70A B0G has 1047 pieces in stock but is discontinued at DiGi Electronics, limiting future availability. The SA70A A0G has 920 pieces in stock and maintains active product status, ensuring ongoing procurement capability.