CS3P-40B TRIAC Equivalent & Substitute Parts

Part Overview

The CS3P-40B is a 40A 200V TRIAC manufactured by Central Semiconductor Corp in TO-3 packaging. This component is classified as obsolete and is no longer in active production. Due to its obsolete status and limited availability, identifying functionally equivalent substitute components is essential for system redesign, maintenance, and long-term supply chain continuity.

Substiute Parts

CS3P-40B

Central Semiconductor CorpIn Stock: 906CS3P-40B Datasheet

Current PartRFQ

BTA40-600B

STMicroelectronicsIn Stock: 16391BTA40-600B Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The BTA40-600B from STMicroelectronics qualifies as a substitute based on the following substitution criteria:

Current Rating Compatibility: Both the CS3P-40B and BTA40-600B are rated for 40A on-state current (It (RMS) Max), meeting the primary load-carrying requirement.

Voltage Rating: The BTA40-600B is rated for 600V off-state voltage, which exceeds the CS3P-40B's 200V rating. This higher voltage rating ensures safe operation in applications originally designed for the 200V component.

Device Configuration: Both components are single TRIAC configurations suitable for AC switching and control applications.

Active Product Status: The BTA40-600B is classified as Active, ensuring ongoing availability and manufacturer support, addressing the supply chain limitation of the obsolete CS3P-40B.

Parameter Comparison

Engineering Selection Recommendations

The BTA40-600B is the designated substitute for the CS3P-40B based on the following factors:

Product Status: The BTA40-600B maintains Active product status with full manufacturer support, whereas the CS3P-40B is obsolete. This ensures long-term component availability and technical documentation access.

Regulatory Compliance: The BTA40-600B is ROHS3 Compliant and REACH Unaffected, meeting current environmental and regulatory standards for electronic components in most jurisdictions.

Electrical Compatibility: The matching 40A on-state current rating ensures the substitute can handle the same load requirements. The elevated 600V off-state voltage rating provides additional safety margin and is suitable for applications originally specified at 200V.

Thermal Specifications: The BTA40-600B provides a defined operating temperature range of -40°C to 125°C, enabling proper thermal design validation for replacement applications.

Frequently Asked Questions (FAQ)

Q: Can the BTA40-600B directly replace the CS3P-40B in existing designs?

A: The BTA40-600B is electrically compatible based on matching 40A current ratings and exceeding voltage requirements. However, physical package differences between TO-3 and RD91-3 (Insulated Chassis Mount) require mechanical redesign of the mounting interface and thermal management strategy.

Q: What is the significance of the higher 600V voltage rating on the BTA40-600B?

A: The 600V rating on the BTA40-600B exceeds the original 200V specification of the CS3P-40B. This higher voltage rating ensures safe operation and provides additional design margin. Applications originally designed for 200V operation will function correctly with the 600V-rated substitute.

Q: Are there packaging considerations when substituting the BTA40-600B for the CS3P-40B?

A: Yes. The CS3P-40B uses TO-3 packaging, while the BTA40-600B uses RD91-3 (Insulated Chassis Mount) packaging. These are different mechanical form factors requiring PCB layout and mounting structure modifications.

Q: Does the BTA40-600B meet current environmental standards?

A: Yes. The BTA40-600B is ROHS3 Compliant and REACH Unaffected, meeting current environmental regulations for electronic component manufacturing and use.

Q: What is the inventory status of the substitute part?

A: The BTA40-600B has 16,285 pieces of new original stock available, providing reliable supply chain access compared to the limited 879-piece inventory of the obsolete CS3P-40B.