SA170CA B0G Equivalent & Substitute Parts

Part Overview

The SA170CA B0G is a Transient Voltage Suppressor (TVS) diode manufactured by Taiwan Semiconductor Corporation, designed for general-purpose overvoltage protection applications. This component features a 170V reverse standoff voltage with 275V maximum clamping voltage and is housed in a DO-204AC (DO-15) axial through-hole package. The SA170CA B0G is currently discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives to maintain design continuity and ensure component availability for production and repair applications.

Substiute Parts

SA170CA B0G

Taiwan Semiconductor CorporationIn Stock: 1044SA170CA B0G Datasheet

Current PartRFQ

SA170CA A0G

Taiwan Semiconductor CorporationIn Stock: 1196SA170CA A0G Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SA170CA B0G is determined by strict equivalence across all critical electrical and mechanical parameters. The substitute part must satisfy the following criteria:

Electrical Parameters (Must Match Exactly):

• Voltage - Reverse Standoff (Typ): 170V
• Voltage - Breakdown (Min): 189V
• Voltage - Clamping (Max) @ Ipp: 275V
• Current - Peak Pulse (10/1000µs): 100mA
• Power - Peak Pulse: 500W
• Type: Zener
• Bidirectional Channels: 1

Mechanical Parameters (Must Match Exactly):

• Package / Case: DO-204AC, DO-15, Axial
• Mounting Type: Through Hole
• Operating Temperature Range: -55°C ~ 175°C (TJ)

Compliance Parameters (Must Match Exactly):

• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level (MSL): 1 (Unlimited)
• REACH Status: REACH Unaffected

The SA170CA A0G meets all substitution criteria and is classified as a direct equivalent.

Parameter Comparison

Engineering Selection Recommendations

The SA170CA A0G is a direct functional equivalent to the SA170CA B0G and is suitable for substitution in all applications where the original part was specified. The substitute part maintains identical electrical performance across all critical parameters including reverse standoff voltage, breakdown voltage, clamping voltage, and peak pulse current ratings.

The SA170CA A0G carries Active product status, ensuring ongoing availability and supply chain continuity. Both parts maintain equivalent compliance certifications: ROHS3 compliance, REACH Unaffected status, and MSL Level 1 (Unlimited moisture sensitivity). The substitute part is housed in the identical DO-204AC (DO-15) axial through-hole package, requiring no modifications to printed circuit board layouts or assembly procedures.

Selection of the SA170CA A0G eliminates obsolescence risk associated with the discontinued SA170CA B0G while preserving design integrity and performance specifications.

Frequently Asked Questions (FAQ)

Q: Can the SA170CA A0G be used as a direct replacement for the SA170CA B0G in existing designs?

A: Yes. The SA170CA A0G is electrically and mechanically identical to the SA170CA B0G across all specified parameters. No circuit modifications, board layout changes, or assembly procedure adjustments are required.

Q: Are there any differences in the electrical performance between these two parts?

A: No. Both parts share identical specifications for reverse standoff voltage (170V), breakdown voltage (189V), clamping voltage (275V), peak pulse current (100mA), and peak pulse power (500W).

Q: Do both parts use the same package and mounting method?

A: Yes. Both the SA170CA B0G and SA170CA A0G use the DO-204AC (DO-15) axial through-hole package and are mounted identically on printed circuit boards.

Q: What is the primary reason for substituting the SA170CA B0G?

A: The SA170CA B0G is discontinued at DiGi Electronics. The SA170CA A0G is an active product with confirmed inventory availability, ensuring reliable supply for production and repair applications.

Q: Are the compliance and regulatory certifications equivalent?

A: Yes. Both parts are ROHS3 compliant, REACH Unaffected, and carry MSL Level 1 (Unlimited) moisture sensitivity ratings.

Q: Can the SA170CA A0G handle the same transient voltage protection requirements?

A: Yes. The SA170CA A0G is rated for identical transient voltage suppression performance with 275V maximum clamping voltage and 100mA peak pulse current capacity.