SA45A B0G Equivalent & Substitute Parts

Part Overview

The SA45A 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 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 format.

The SA45A B0G is currently 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

SA45A B0G

Taiwan Semiconductor CorporationIn Stock: 963SA45A B0G Datasheet

Current PartRFQ

SA45A A0G

Taiwan Semiconductor CorporationIn Stock: 724SA45A A0G Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SA45A 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): 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 Exactly):

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

Compliance Parameters (Must Match Exactly):

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

The SA45A B0G has one identified substitute part that meets all specified criteria.

Parameter Comparison

Engineering Selection Recommendations

The SA45A A0G is a direct equivalent substitute for the SA45A B0G. Both components are manufactured by Taiwan Semiconductor Corporation and share identical electrical specifications, mechanical packaging, and compliance certifications.

Primary Advantage of SA45A A0G: The SA45A A0G maintains active product status, ensuring ongoing availability and supply chain continuity. The main part (SA45A B0G) is discontinued at DiGi Electronics, making the SA45A A0G the appropriate selection for new designs, production builds, and component replenishment.

Compliance Alignment: Both parts are ROHS3 compliant, REACH unaffected, and carry identical moisture sensitivity ratings (MSL 1 - Unlimited). No compliance or regulatory differences exist between the two components.

Functional Interchangeability: The SA45A A0G provides identical performance characteristics for general-purpose transient voltage suppression applications. All electrical parameters, thermal operating range, and package specifications are equivalent, enabling direct substitution in existing circuit designs without modification.

Frequently Asked Questions (FAQ)

Q: Can the SA45A A0G be used as a direct replacement for the SA45A B0G?

A: Yes. The SA45A A0G is a direct equivalent substitute. All electrical parameters (45V standoff, 72.7V clamping, 7.2A peak pulse current), mechanical specifications (DO-204AC through-hole axial package), and compliance certifications are identical between the two parts.

Q: What is the difference between the SA45A B0G and SA45A A0G?

A: The only difference is product status. The SA45A B0G is discontinued at DiGi Electronics, while the SA45A A0G is active. Both components are manufactured by Taiwan Semiconductor Corporation with identical specifications.

Q: Are there any package or pinout differences between these parts?

A: No. Both the SA45A B0G and SA45A A0G use the DO-204AC (DO-15) axial through-hole package format. Pinout and mechanical dimensions are identical, enabling direct board-level substitution.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the SA45A B0G and SA45A A0G are ROHS3 compliant, REACH unaffected, and carry MSL 1 (Unlimited) moisture sensitivity ratings. No compliance differences exist.

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

A: Both parts operate across a junction temperature range of -55°C to 175°C (TJ), providing equivalent thermal performance for general-purpose transient voltage suppression applications.

Q: Can these parts be used interchangeably in existing circuit designs?

A: Yes. The SA45A A0G provides identical electrical and mechanical performance to the SA45A B0G. No circuit modifications, board layout changes, or design alterations are required for substitution.

Q: What applications are these TVS diodes suitable for?

A: Both parts are rated for general-purpose transient voltage suppression. The 45V standoff voltage, 72.7V clamping voltage, and 7.2A peak pulse current capability make these components suitable for protecting sensitive electronic circuits from transient overvoltage events.