CQ220-8M Equivalent & Substitute Parts

Part Overview

The CQ220-8M is an internally triggered TRIAC manufactured by Central Semiconductor Corp, rated for 600 V off-state voltage and 8 A on-state current in a TO-220-3 through-hole package. This component is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. The internally triggered configuration and specific electrical characteristics define the scope of compatible alternatives.

Substiute Parts

CQ220-8M

Central Semiconductor CorpIn Stock: 986CQ220-8M Datasheet

Current PartRFQ

MAC9MG

Littelfuse Inc.In Stock: 6992MAC9MG Datasheet

MFR RecommendedRFQ

T410H-6T

STMicroelectronicsIn Stock: 2150T410H-6T Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CQ220-8M is determined by the following criteria:

• Voltage Rating: Off-state voltage must be 600 V or greater
• Current Rating: On-state current must support 8 A or greater
• Package Compatibility: TO-220-3 or equivalent through-hole package
• Gate Trigger Parameters: Voltage gate trigger (Vgt) and current gate trigger (Igt) must be within acceptable operating ranges for the application circuit
• Temperature Range: Operating temperature range must encompass or exceed -40°C to 125°C

The substitute parts MAC9MG and T410H-6T meet the voltage and package requirements. However, differences in current ratings, gate trigger characteristics, and TRIAC type (internally triggered vs. standard vs. logic-sensitive gate) must be evaluated against specific application requirements.

Parameter Comparison

Engineering Selection Recommendations

MAC9MG (Littelfuse Inc.): This substitute maintains the 8 A current rating and 600 V voltage specification of the CQ220-8M. The MAC9MG is classified as active product status with ROHS3 compliance, ensuring long-term availability and regulatory alignment. The lower gate trigger voltage (1.5 V vs. 2.5 V) and higher hold current (50 mA vs. 25 mA) represent operational differences that must be evaluated within the specific application circuit. The standard TRIAC type differs from the internally triggered configuration of the original part.

T410H-6T (STMicroelectronics): This substitute provides 600 V voltage rating and extended operating temperature range (-40°C to 150°C). However, the on-state current rating is 4 A, which is 50% lower than the CQ220-8M specification. The logic-sensitive gate configuration with lower gate trigger current (10 mA) and voltage (1 V) represents a different TRIAC architecture. This part is suitable only for applications where the 4 A current limit is acceptable. Active product status and ROHS3 compliance are confirmed.

Frequently Asked Questions (FAQ)

Q: Can MAC9MG directly replace CQ220-8M in all applications?

A: MAC9MG matches the voltage and current ratings and shares the TO-220-3 package. However, the gate trigger characteristics differ (Vgt: 1.5 V vs. 2.5 V; Igt: 50 mA vs. 50 mA). The TRIAC type change from internally triggered to standard requires circuit validation to confirm gate drive compatibility.

Q: Why is T410H-6T listed as a substitute if the current rating is only 4 A?

A: T410H-6T is included as a substitute option for applications where the load current does not exceed 4 A. The 600 V voltage rating and TO-220-3 package provide mechanical and electrical compatibility within this current constraint. The logic-sensitive gate configuration may offer advantages in low-gate-drive-current applications.

Q: Are all substitute parts RoHS compliant?

A: MAC9MG and T410H-6T are both ROHS3 compliant. The original CQ220-8M RoHS status is not specified in the provided data.

Q: What is the difference between internally triggered and standard TRIAC types?

A: The CQ220-8M is internally triggered, while MAC9MG is a standard TRIAC. These represent different internal gate circuit architectures. Substitution requires verification that the application circuit provides appropriate gate drive signals for the substitute part type.

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

A: All three parts use the TO-220-3 package and through-hole mounting, providing mechanical interchangeability. Electrical interchangeability depends on gate drive circuit design and load current requirements specific to the application.