SA45CA B0G Equivalent & Substitute Parts

Part Overview

The SA45CA B0G is a Transient Voltage Suppressor (TVS) diode manufactured by Taiwan Semiconductor Corporation, designed for general-purpose overvoltage protection applications. This component features a 45V reverse standoff voltage with a 72.7V maximum clamping voltage and 7.2A peak pulse current capability in a through-hole DO-204AC (DO-15) axial package.

The SA45CA B0G is currently discontinued at DiGi Electronics. Identifying equivalent substitute parts is necessary to maintain design continuity and ensure component availability for new production runs, repairs, and ongoing system support.

Substiute Parts

SA45CA B0G

Taiwan Semiconductor CorporationIn Stock: 897SA45CA B0G Datasheet

Current PartRFQ

SA45CA A0G

Taiwan Semiconductor CorporationIn Stock: 843SA45CA A0G Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SA45CA B0G are identified based on electrical and mechanical parameter equivalence. The following criteria determine substitution validity:

Electrical Parameters (Must Match):

• Voltage - Reverse Standoff (Typ): 45V
• Voltage - Breakdown (Min): 50V
• Voltage - Clamping (Max) @ Ipp: 72.7V
• Current - Peak Pulse (10/1000µs): 7.2A
• 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

Device Type (Must Match):

• Type: Zener
• Category: Transient Voltage Suppressors (TVS)

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

Parameter Comparison

Engineering Selection Recommendations

The SA45CA A0G is a direct equivalent substitute for the SA45CA B0G. Both components share identical electrical specifications, mechanical packaging, and compliance certifications. The primary distinction is product status: the SA45CA B0G is discontinued, while the SA45CA A0G maintains active status with current manufacturer support.

Selection of the SA45CA A0G is supported by:

• Complete electrical parameter equivalence across all voltage, current, and power ratings
• Identical package configuration (DO-204AC, DO-15, Axial through-hole)
• Matching operating temperature range (-55°C to 175°C)
• Equivalent compliance certifications (ROHS3 Compliant, REACH Unaffected)
• Active product status ensuring ongoing availability and manufacturer support

No circuit modifications, PCB layout changes, or thermal management adjustments are required when substituting the SA45CA A0G for the SA45CA B0G.

Frequently Asked Questions (FAQ)

Q: Can the SA45CA A0G be used as a direct replacement for the SA45CA B0G?

A: Yes. The SA45CA A0G is a direct electrical and mechanical equivalent. All voltage ratings, current specifications, power dissipation, operating temperature range, and package dimensions are identical. No circuit redesign is necessary.

Q: What is the difference between the SA45CA B0G and SA45CA A0G?

A: The components are electrically and mechanically identical. The difference is in product status: the SA45CA B0G is discontinued at DiGi Electronics, while the SA45CA A0G is an active product with current manufacturer support and availability.

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

A: No. Both the SA45CA B0G and SA45CA A0G carry identical compliance certifications: ROHS3 Compliant, REACH Unaffected, and Moisture Sensitivity Level 1 (Unlimited).

Q: Can these TVS diodes be used in the same PCB footprint?

A: Yes. Both components use the DO-204AC (DO-15) axial through-hole package with identical pin spacing and lead configuration. No PCB modifications are required.

Q: What applications are these TVS diodes suitable for?

A: Both the SA45CA B0G and SA45CA A0G are rated for general-purpose transient voltage suppression applications requiring 45V standoff voltage protection with 7.2A peak pulse current handling.

Q: Is the operating temperature range the same for both parts?

A: Yes. Both components operate across the identical temperature range of -55°C to 175°C (junction temperature).

Q: What is the peak pulse power rating for these components?

A: Both the SA45CA B0G and SA45CA A0G are rated for 500W peak pulse power dissipation under 10/1000µs pulse conditions.