SA28CA B0G Equivalent & Substitute Parts

Part Overview

The SA28CA B0G is a transient voltage suppressor (TVS) diode manufactured by Taiwan Semiconductor Corporation, designed for general-purpose overvoltage protection applications. This component features a 28V reverse standoff voltage with a 59V maximum clamping voltage and 11.5A peak pulse current capability in a through-hole DO-204AC (DO-15) axial package. The SA28CA 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

SA28CA B0G

Taiwan Semiconductor CorporationIn Stock: 1257SA28CA B0G Datasheet

Current PartRFQ

SA28CA A0G

Taiwan Semiconductor CorporationIn Stock: 917SA28CA A0G Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SA28CA 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):

• Voltage - Reverse Standoff (Typ): 28V
• Voltage - Breakdown (Min): 31.1V
• Voltage - Clamping (Max) @ Ipp: 59V
• Current - Peak Pulse (10/1000µs): 11.5A
• Power - Peak Pulse: 500W
• Operating Temperature Range: -55°C to 175°C (TJ)

Mechanical Parameters (Must Match):

• Package / Case: DO-204AC, DO-15, Axial
• Mounting Type: Through Hole
• Bidirectional Channels: 1
• Type: Zener

Compliance Parameters (Must Match):

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

The SA28CA A0G meets all substitution criteria and is classified as a direct equivalent.

Parameter Comparison

Engineering Selection Recommendations

The SA28CA A0G is a direct functional equivalent to the SA28CA B0G and is suitable for substitution in all applications where the main part was originally specified. The substitute part maintains identical electrical performance across all critical parameters including voltage ratings, current handling, and thermal operating range.

The SA28CA A0G carries active product status, ensuring ongoing availability and supply chain continuity. Both parts comply with ROHS3 and REACH requirements, with identical moisture sensitivity classification (MSL 1 - Unlimited), confirming compatibility in storage, handling, and assembly processes.

The through-hole DO-204AC (DO-15) axial package is identical between both parts, permitting direct board-level substitution without PCB redesign or mechanical rework.

Frequently Asked Questions (FAQ)

Q: Can the SA28CA A0G be used as a direct replacement for the SA28CA B0G?

A: Yes. The SA28CA A0G is electrically and mechanically identical to the SA28CA B0G across all specified parameters. Both components feature identical voltage ratings (28V standoff, 59V clamping), current handling (11.5A peak pulse), power dissipation (500W), operating temperature range (-55°C to 175°C), and package configuration (DO-204AC through-hole axial). Direct substitution is supported without circuit modification.

Q: What is the difference between the SA28CA B0G and SA28CA A0G?

A: The primary difference is product status. The SA28CA B0G is discontinued at DiGi Electronics, while the SA28CA A0G maintains active status. The alphanumeric suffix (B0G versus A0G) indicates manufacturing or distribution variant codes assigned by Taiwan Semiconductor Corporation. All electrical and mechanical specifications are identical.

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

A: No. Both the SA28CA B0G and SA28CA A0G carry identical compliance certifications: ROHS3 Compliant, REACH Unaffected, and MSL 1 (Unlimited moisture sensitivity level). Both parts are suitable for applications requiring these regulatory certifications.

Q: Can these parts be used interchangeably in PCB assembly?

A: Yes. Both parts use the DO-204AC (DO-15) axial through-hole package with identical pin configuration and mechanical dimensions. No PCB layout changes, component footprint modifications, or assembly process adjustments are required for substitution.

Q: What applications are these TVS diodes suitable for?

A: Both the SA28CA B0G and SA28CA A0G are classified for general-purpose transient voltage suppression applications. The 28V standoff voltage and 59V clamping voltage make these components suitable for protecting circuits operating in the 24V to 28V nominal voltage range against transient overvoltage events.

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

A: The SA28CA A0G has 865 pieces in stock with active product status, ensuring continued availability. The SA28CA B0G is discontinued, with 1165 pieces remaining in inventory. For new designs and ongoing production, the SA28CA A0G is the recommended selection due to active status and supply continuity.