SA70CA B0G Equivalent & Substitute Parts

Part Overview

The SA70CA B0G is a Transient Voltage Suppressor (TVS) diode manufactured by Taiwan Semiconductor Corporation, designed for general-purpose voltage clamping applications. This component features a 70V reverse standoff voltage with a maximum clamping voltage of 113V and peak pulse current handling of 4.6A in a through-hole DO-204AC (DO-15) axial package. The SA70CA B0G is currently discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives to maintain design continuity and ensure component availability for repair, maintenance, and new production requirements.

Substiute Parts

SA70CA B0G

Taiwan Semiconductor CorporationIn Stock: 738SA70CA B0G Datasheet

Current PartRFQ

SA70CA A0G

Taiwan Semiconductor CorporationIn Stock: 690SA70CA A0G Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SA70CA B0G are identified based on strict electrical and mechanical parameter matching within the TVS diode category. The substitution criteria are:

Primary Matching Parameters:

• Voltage - Reverse Standoff (Typ): 70V
• Voltage - Clamping (Max) @ Ipp: 113V
• Current - Peak Pulse (10/1000µs): 4.6A
• Power - Peak Pulse: 500W
• Operating Temperature Range: -55°C to 175°C (TJ)
• Package / Case: DO-204AC, DO-15, Axial
• Type: Zener, Bidirectional (1 channel)

Parts meeting all these parameters are classified as direct electrical and mechanical equivalents. The SA70CA A0G substitute part maintains identical electrical specifications and physical form factor, differing only in product status classification.

Parameter Comparison

Engineering Selection Recommendations

The SA70CA A0G serves as a direct functional equivalent to the SA70CA B0G. Both components are manufactured by Taiwan Semiconductor Corporation and share identical electrical specifications and physical packaging. The primary distinction is product status: the SA70CA B0G is discontinued at DiGi Electronics, while the SA70CA A0G maintains active status.

For applications currently utilizing the SA70CA B0G, the SA70CA A0G provides seamless substitution without circuit redesign or performance compromise. Both parts comply with ROHS3 and REACH requirements, ensuring regulatory alignment. The SA70CA A0G is available in higher inventory quantities (641 Pcs) compared to remaining SA70CA B0G stock (711 Pcs), supporting long-term supply chain continuity.

Selection of the SA70CA A0G is appropriate for new designs, production restocking, and component replacement scenarios where the SA70CA B0G is no longer procurable through standard distribution channels.

Frequently Asked Questions (FAQ)

Q: Can the SA70CA A0G be used as a direct replacement for the SA70CA B0G in existing designs?

A: Yes. The SA70CA A0G is electrically and mechanically identical to the SA70CA B0G. All electrical parameters, including reverse standoff voltage (70V), clamping voltage (113V), peak pulse current (4.6A), and operating temperature range (-55°C to 175°C), are identical. The through-hole DO-204AC (DO-15) axial package is unchanged, permitting direct PCB substitution without circuit modification.

Q: What is the difference between the SA70CA B0G and SA70CA A0G?

A: The components differ only in product status designation. The SA70CA B0G is discontinued at DiGi Electronics, while the SA70CA A0G maintains active status. All electrical specifications, mechanical dimensions, and compliance certifications (ROHS3, REACH) are identical.

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

A: No. Both the SA70CA B0G and SA70CA A0G are ROHS3 compliant and REACH unaffected. Moisture sensitivity level (MSL 1 - Unlimited) is identical for both parts. No regulatory or compliance barriers exist to substitution.

Q: What are the critical parameters that define substitution eligibility for this TVS diode?

A: Substitution eligibility is determined by matching the following parameters: reverse standoff voltage (70V), clamping voltage (113V), peak pulse current (4.6A), power dissipation (500W), operating temperature range (-55°C to 175°C), package type (DO-204AC/DO-15 axial), and diode type (Zener, bidirectional, single channel). The SA70CA A0G meets all these criteria.

Q: Is the through-hole axial package identical between both parts?

A: Yes. Both the SA70CA B0G and SA70CA A0G use the DO-204AC (DO-15) through-hole axial package. Physical dimensions, lead spacing, and PCB mounting requirements are identical, enabling direct board-level substitution.

Q: What inventory status should influence component selection?

A: The SA70CA A0G is currently available with 641 Pcs in stock, while SA70CA B0G stock is limited to 711 Pcs and the part is discontinued. For new procurement and long-term supply assurance, the SA70CA A0G is the appropriate selection.