SA40A B0G Equivalent & Substitute Parts

Part Overview

The SA40A 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 40V reverse standoff voltage with a 64.5V maximum clamping voltage and 8.1A peak pulse current capability in a through-hole DO-204AC (DO-15) axial package format.

The SA40A B0G has been discontinued at DiGi Electronics. Identifying equivalent substitute parts is necessary to maintain design continuity and ensure component availability for production, repair, and maintenance applications where this TVS diode specification is required.

Substiute Parts

SA40A B0G

Taiwan Semiconductor CorporationIn Stock: 881SA40A B0G Datasheet

Current PartRFQ

SA40A A0G

Taiwan Semiconductor CorporationIn Stock: 710SA40A A0G Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SA40A B0G are identified based on electrical and mechanical parameter equivalence within the TVS diode category. The substitution criteria are strictly limited to the following parameters:

• Voltage Rating: Reverse standoff voltage of 40V (Typ), breakdown voltage minimum of 44.4V, and clamping voltage maximum of 64.5V
• Current Handling: Peak pulse current of 8.1A at 10/1000µs pulse duration
• Power Dissipation: Peak pulse power rating of 500W
• Package Configuration: Through-hole mounting in DO-204AC (DO-15) axial package
• Diode Type: Unidirectional Zener TVS diode with single channel
• Temperature Range: Operating junction temperature range of -55°C to 175°C
• Compliance: RoHS3 compliance and REACH unaffected status

Parts meeting all these electrical and mechanical specifications are classified as direct equivalents and may be substituted without circuit redesign.

Parameter Comparison

Engineering Selection Recommendations

The SA40A A0G is a direct electrical and mechanical equivalent to the SA40A B0G. Both components are manufactured by Taiwan Semiconductor Corporation within the SA series and share identical electrical specifications across all critical parameters: 40V reverse standoff voltage, 44.4V minimum breakdown voltage, 64.5V maximum clamping voltage, and 8.1A peak pulse current.

The primary distinction between these parts is product status. The SA40A B0G is discontinued at DiGi Electronics, while the SA40A A0G maintains active product status with confirmed inventory availability (625 pieces in stock). Both parts maintain full RoHS3 compliance and REACH unaffected status, ensuring regulatory compatibility in applications requiring environmental compliance certification.

The SA40A A0G is suitable for direct substitution in all applications where the SA40A B0G was originally specified. No circuit modifications, PCB layout changes, or application re-qualification are required due to complete parameter equivalence and identical package configuration.

Frequently Asked Questions (FAQ)

Q: Can the SA40A A0G be used as a direct replacement for the SA40A B0G?

A: Yes. The SA40A A0G is a direct substitute. All electrical parameters (voltage ratings, current handling, power dissipation) and mechanical specifications (package type, mounting configuration) are identical. The components are interchangeable without circuit redesign.

Q: What is the difference between SA40A B0G and SA40A A0G?

A: The difference is limited to product status and inventory availability. The SA40A B0G is discontinued at DiGi Electronics, while the SA40A A0G is an active product with available stock. All technical specifications are identical.

Q: Are there any compliance or certification differences between these parts?

A: No. Both the SA40A B0G and SA40A A0G carry identical RoHS3 compliance and REACH unaffected status. They meet the same regulatory requirements for environmental and hazardous substance restrictions.

Q: Will the SA40A A0G fit in the same PCB footprint as the SA40A B0G?

A: Yes. Both components use the DO-204AC (DO-15) axial through-hole package format. PCB layout, hole spacing, and mounting configuration are identical. No PCB modifications are necessary.

Q: What are the key electrical parameters that define substitution eligibility?

A: Substitution eligibility is determined by matching the following parameters: 40V reverse standoff voltage, 44.4V minimum breakdown voltage, 64.5V maximum clamping voltage, 8.1A peak pulse current, 500W peak pulse power, and -55°C to 175°C operating temperature range. The SA40A A0G meets all these specifications.

Q: Is the SA40A A0G suitable for the same applications as the SA40A B0G?

A: Yes. Both components are rated for general-purpose transient voltage suppression applications. The identical electrical specifications and operating temperature range ensure equivalent performance in all application contexts where the SA40A B0G was originally deployed.