SA33CA B0G Equivalent & Substitute Parts

Part Overview

The SA33CA B0G is a Transient Voltage Suppressor (TVS) diode manufactured by Taiwan Semiconductor Corporation, designed for general-purpose overvoltage protection applications. This component is a unidirectional Zener-type TVS diode housed in a DO-204AC (DO-15) axial through-hole package. The device is currently discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives that maintain identical electrical and mechanical specifications for seamless circuit integration.

Substiute Parts

SA33CA B0G

Taiwan Semiconductor CorporationIn Stock: 1144SA33CA B0G Datasheet

Current PartRFQ

SA33CA A0G

Taiwan Semiconductor CorporationIn Stock: 1145SA33CA A0G Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SA33CA B0G is determined by strict equivalence across all critical electrical and mechanical parameters. The following parameters establish the substitution criteria:

Electrical Parameters:

• Voltage - Reverse Standoff (Typ): 33V
• Voltage - Breakdown (Min): 36.7V
• Voltage - Clamping (Max) @ Ipp: 71.4V
• Current - Peak Pulse (10/1000µs): 9.8A
• Power - Peak Pulse: 500W
• Operating Temperature Range: -55°C ~ 175°C (TJ)

Mechanical Parameters:

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

Compliance Parameters:

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

Substitute parts must match all parameters listed above to ensure functional and physical compatibility within the original circuit design.

Parameter Comparison

Engineering Selection Recommendations

The SA33CA A0G serves as a direct equivalent substitute for the SA33CA B0G. Both components are manufactured by Taiwan Semiconductor Corporation and share identical electrical specifications, mechanical packaging, and compliance certifications. The primary distinction is product status: the SA33CA B0G is discontinued at DiGi Electronics, while the SA33CA A0G maintains active status.

For applications currently utilizing the SA33CA B0G, the SA33CA A0G provides full functional replacement without circuit modification. Both parts comply with ROHS3 requirements, maintain REACH unaffected status, and exhibit identical performance characteristics across all specified operating parameters. The SA33CA A0G is the recommended selection for new designs and replacement procurement due to its active availability status.

Frequently Asked Questions (FAQ)

Q: Can the SA33CA A0G be used as a direct replacement for the SA33CA B0G?

A: Yes. The SA33CA A0G is a direct equivalent substitute. All electrical parameters, mechanical specifications, and compliance certifications are identical between the two parts. No circuit modifications are required.

Q: What is the difference between the SA33CA B0G and SA33CA A0G?

A: The components are electrically and mechanically identical. The primary difference is product status: SA33CA B0G is discontinued at DiGi Electronics, while SA33CA A0G is active. The alphanumeric suffix (B0G versus A0G) indicates manufacturing date code or revision level but does not affect functional performance.

Q: Are both parts compatible with the same PCB footprint?

A: Yes. Both the SA33CA B0G and SA33CA A0G use the DO-204AC (DO-15) axial through-hole package. They are mechanically and electrically interchangeable on the same printed circuit board layout.

Q: What are the critical parameters for TVS diode substitution?

A: For the SA33 series, critical parameters include reverse standoff voltage (33V), breakdown voltage (36.7V minimum), clamping voltage (71.4V maximum at peak pulse current), peak pulse current (9.8A), and operating temperature range (-55°C to 175°C). Package type (DO-204AC) and mounting method (through-hole) must also match.

Q: Do both parts meet current regulatory requirements?

A: Yes. Both the SA33CA B0G and SA33CA A0G are ROHS3 compliant, REACH unaffected, and carry MSL 1 (unlimited) moisture sensitivity rating. Both parts satisfy current environmental and regulatory standards.

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

A: Both parts are rated for 500W peak pulse power dissipation under 10/1000µs pulse conditions, supporting 9.8A peak pulse current at a maximum clamping voltage of 71.4V.