SA51CA B0G Equivalent & Substitute Parts

Part Overview

The SA51CA B0G is a transient voltage suppressor (TVS) diode manufactured by Taiwan Semiconductor Corporation, designed for general-purpose overvoltage protection applications. This component features a 51V reverse standoff voltage with an 82.4V maximum clamping voltage and 6.3A peak pulse current rating. The part is packaged in a DO-204AC (DO-15) axial through-hole configuration with a 500W peak pulse power rating.

The SA51CA B0G has been discontinued at DiGi Electronics. Identifying equivalent substitute parts ensures continued availability for repair, maintenance, and new production applications requiring identical electrical and mechanical specifications.

Substiute Parts

SA51CA B0G

Taiwan Semiconductor CorporationIn Stock: 703SA51CA B0G Datasheet

Current PartRFQ

SA51CA A0G

Taiwan Semiconductor CorporationIn Stock: 1187SA51CA A0G Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SA51CA B0G are identified based on strict electrical and mechanical parameter matching within the TVS diode category. The substitution criteria are:

Electrical Parameters (Must Match):

• Voltage - Reverse Standoff (Typ): 51V
• Voltage - Breakdown (Min): 56.7V
• Voltage - Clamping (Max) @ Ipp: 82.4V
• Current - Peak Pulse (10/1000µs): 6.3A
• 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
• Type: Zener
• Bidirectional Channels: 1

Compliance Parameters (Must Match):

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

Only parts meeting all specified parameters are listed as direct substitutes.

Parameter Comparison

Engineering Selection Recommendations

The SA51CA A0G is a direct functional equivalent to the SA51CA B0G. Both parts are manufactured by Taiwan Semiconductor Corporation and share identical electrical specifications, mechanical packaging, and compliance certifications.

The primary distinction between these parts is product status and inventory availability. The SA51CA B0G is discontinued at DiGi Electronics, while the SA51CA A0G maintains active product status with higher inventory levels (1097 pieces versus 673 pieces). Both parts are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic component manufacturing and distribution.

For applications currently specified with SA51CA B0G, the SA51CA A0G provides equivalent performance with assured long-term availability and supply chain continuity.

Frequently Asked Questions (FAQ)

Q: Can SA51CA A0G be used as a direct replacement for SA51CA B0G?

A: Yes. The SA51CA A0G is a direct substitute. Both parts share identical electrical parameters (51V reverse standoff, 82.4V clamping voltage, 6.3A peak pulse current, 500W peak power), mechanical packaging (DO-204AC axial through-hole), operating temperature range (-55°C to 175°C), and compliance certifications (ROHS3, REACH unaffected).

Q: What is the difference between SA51CA B0G and SA51CA A0G?

A: The parts are electrically and mechanically identical. The difference is in product status: SA51CA B0G is discontinued at DiGi Electronics, while SA51CA A0G is active. The A0G variant also has higher inventory availability.

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

A: No. Both parts use the DO-204AC (DO-15) axial through-hole package with identical mechanical dimensions and lead configuration.

Q: Do both parts meet the same compliance standards?

A: Yes. Both SA51CA B0G and SA51CA A0G are ROHS3 compliant, REACH unaffected, and carry Moisture Sensitivity Level 1 (unlimited shelf life).

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

A: Yes. The identical electrical specifications, operating temperature range, and package configuration allow direct interchangeability without circuit modification or re-qualification.

Q: What applications are these TVS diodes suitable for?

A: Both parts are rated for general-purpose transient voltage suppression applications requiring 51V standoff protection with 6.3A peak pulse current handling capability.