SA8.5CA B0G Equivalent & Substitute Parts

Part Overview

The SA8.5CA B0G is a Transient Voltage Suppressor (TVS) diode manufactured by Taiwan Semiconductor Corporation, designed for general-purpose overvoltage protection applications. This component features an 8.5V reverse standoff voltage with a 14.4V maximum clamping voltage and is housed in a DO-204AC (DO-15) axial through-hole package. The part is currently discontinued at DiGi Electronics, necessitating identification of equivalent substitute components that maintain identical electrical and mechanical specifications for continued system design and repair applications.

Substiute Parts

SA8.5CA B0G

Taiwan Semiconductor CorporationIn Stock: 958SA8.5CA B0G Datasheet

Current PartRFQ

SA8.5CA A0G

Taiwan Semiconductor CorporationIn Stock: 1168SA8.5CA A0G Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SA8.5CA B0G TVS diode is determined by strict equivalence across the following critical parameters:

Electrical Specifications:

• Reverse standoff voltage: 8.5V (Typ)
• Breakdown voltage minimum: 9.44V
• Maximum clamping voltage at peak pulse current: 14.4V
• Peak pulse current rating: 36A (10/1000µs waveform)
• Peak pulse power dissipation: 500W

Mechanical and Package Specifications:

• Through-hole mounting configuration
• DO-204AC (DO-15) axial package format
• Single bidirectional channel configuration

Compliance and Environmental:

• ROHS3 compliance requirement
• Operating temperature range: -55°C to 175°C (TJ)
• Moisture sensitivity level: 1 (Unlimited)

Substitute parts must match all electrical parameters within the specified tolerances and maintain identical package and mounting characteristics. The SA series base product number designation indicates component family compatibility.

Parameter Comparison

Engineering Selection Recommendations

The SA8.5CA A0G serves as a direct electrical and mechanical equivalent to the SA8.5CA B0G. Both components are manufactured by Taiwan Semiconductor Corporation and share identical electrical specifications across all critical parameters including voltage ratings, current handling, and power dissipation characteristics. Both components are housed in the DO-204AC (DO-15) axial through-hole package and maintain full ROHS3 compliance with unlimited moisture sensitivity classification.

The primary distinction between these parts is product status: the SA8.5CA B0G is discontinued at DiGi Electronics, while the SA8.5CA A0G maintains active product status. The SA8.5CA A0G is available in higher inventory quantities (1098 pieces in stock versus 887 pieces for the main part), providing improved supply chain availability for new designs and production requirements.

For applications requiring the SA8.5CA B0G specifications, the SA8.5CA A0G provides complete functional and physical interchangeability with no design modifications required.

Frequently Asked Questions (FAQ)

Q: Are the SA8.5CA B0G and SA8.5CA A0G electrically identical?

A: Yes. Both components share identical electrical specifications including 8.5V reverse standoff voltage, 9.44V minimum breakdown voltage, 14.4V maximum clamping voltage, 36A peak pulse current rating, and 500W peak pulse power dissipation.

Q: Can the SA8.5CA A0G be used as a direct replacement in existing designs?

A: Yes. The SA8.5CA A0G is a direct substitute with identical package format (DO-204AC/DO-15 axial), mounting type (through-hole), and all electrical parameters. No circuit modifications or PCB layout changes are required.

Q: What is the difference between the part numbers SA8.5CA B0G and SA8.5CA A0G?

A: The difference lies in the manufacturing date code suffix (B0G versus A0G) and product status. The SA8.5CA A0G is currently in active production status, while the SA8.5CA B0G is discontinued. All electrical and mechanical specifications remain identical.

Q: Are both parts ROHS3 compliant?

A: Yes. Both the SA8.5CA B0G and SA8.5CA A0G are ROHS3 compliant with moisture sensitivity level 1 (unlimited).

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

A: Both components operate across a junction temperature range of -55°C to 175°C (TJ).

Q: Can these components be used for power line protection applications?

A: No. Both the SA8.5CA B0G and SA8.5CA A0G are designated for general-purpose transient voltage suppression and are not rated for power line protection applications.