CQ220-10D Equivalent & Substitute Parts

Part Overview

The CQ220-10D is an internally triggered TRIAC manufactured by Central Semiconductor Corp, rated for 400 V off-state voltage and 10 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 distinguishes this part from standard TRIAC designs, affecting substitution compatibility.

Key Parameters

Parameter	CQ220-10D
Voltage - Off State	400 V
Current - On State (It (RMS)) (Max)	10 A
Voltage - Gate Trigger (Vgt) (Max)	1.5 V
Current - Gate Trigger (Igt) (Max)	50 mA
Current - Hold (Ih) (Max)	25 mA
Operating Temperature Range	-40°C ~ 110°C (TJ)
Package / Case	TO-220-3
Mounting Type	Through Hole

Substitute Part Grouping Explanation

Substitution of the CQ220-10D is determined by the following critical parameters:

Voltage Rating (Off State): Must match or exceed 400 V to maintain circuit protection margins
Current Rating (On State): The substitute must support the required load current; the BTA08-400CRG is rated at 8 A, which is lower than the original 10 A specification
Gate Trigger Characteristics: Voltage (Vgt) and current (Igt) thresholds must be compatible with existing gate drive circuitry
Hold Current (Ih): Must not exceed the original specification to ensure reliable latching behavior
Package and Mounting: TO-220-3 through-hole configuration is maintained for mechanical compatibility
Operating Temperature Range: The substitute must cover the required thermal operating window

The BTA08-400CRG is identified as a substitute based on matching voltage rating, package type, and gate trigger parameters. However, the on-state current rating is reduced from 10 A to 8 A, requiring circuit-level evaluation.

Parameter Comparison

Parameter	CQ220-10D	BTA08-400CRG	Notes
Manufacturer	Central Semiconductor Corp	STMicroelectronics	Different manufacturer
Product Status	Obsolete	Active	Substitute is in active production
Triac Type	Internally Triggered	Standard	Different trigger architecture
Voltage - Off State	400 V	400 V	Matched
Current - On State (It (RMS)) (Max)	10 A	8 A	Substitute rated lower
Voltage - Gate Trigger (Vgt) (Max)	1.5 V	1.3 V	Substitute has lower threshold
Current - Gate Trigger (Igt) (Max)	50 mA	25 mA	Substitute requires less gate current
Current - Hold (Ih) (Max)	25 mA	25 mA	Matched
Operating Temperature Range	-40°C ~ 110°C (TJ)	-40°C ~ 125°C (TJ)	Substitute has wider range
Package / Case	TO-220-3	TO-220-3	Matched
Mounting Type	Through Hole	Through Hole	Matched
RoHS Status	Not specified	ROHS3 Compliant	Substitute meets RoHS3

Engineering Selection Recommendations

The BTA08-400CRG is available as an active substitute for the obsolete CQ220-10D. Selection should be based on the following factors:

Voltage and Package Compatibility: Both parts share identical 400 V off-state voltage rating and TO-220-3 through-hole packaging, ensuring mechanical and electrical interface compatibility at the voltage level.

Current Derating: The BTA08-400CRG is rated at 8 A on-state current compared to the CQ220-10D's 10 A rating. Applications operating at or below 8 A RMS can use this substitute without modification. Applications requiring the full 10 A capacity require alternative solutions.

Gate Drive Compatibility: The BTA08-400CRG has a lower gate trigger voltage (1.3 V vs. 1.5 V) and lower gate trigger current requirement (25 mA vs. 50 mA). Existing gate drive circuits designed for the CQ220-10D will operate the BTA08-400CRG with improved triggering margins.

Trigger Architecture Difference: The CQ220-10D uses internal triggering while the BTA08-400CRG is a standard TRIAC. This architectural difference may affect circuit behavior in applications relying on specific internal trigger characteristics. Circuit validation is necessary for applications with critical trigger timing requirements.

Compliance and Availability: The BTA08-400CRG is ROHS3 compliant and in active production with 3400 units in stock, compared to the CQ220-10D's obsolete status with limited inventory.

Frequently Asked Questions (FAQ)

Q: Can the BTA08-400CRG directly replace the CQ220-10D in all applications?

A: Direct replacement is possible for applications operating at 8 A or below. The lower current rating and different trigger architecture require circuit evaluation for applications dependent on the full 10 A capacity or specific internal triggering behavior.

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

A: Internally triggered TRIACs have integrated gate triggering circuits, while standard TRIACs require external gate drive signals. The BTA08-400CRG, as a standard TRIAC, requires external gate drive circuitry. Verify that existing gate drive circuits are compatible with standard TRIAC operation.

Q: Are the gate trigger parameters compatible between these parts?

A: The BTA08-400CRG has lower gate trigger voltage (1.3 V) and current (25 mA) requirements compared to the CQ220-10D (1.5 V, 50 mA). Existing gate drive circuits will trigger the substitute with improved margins, but circuit validation is recommended.

Q: Does the operating temperature range difference affect substitution?

A: The BTA08-400CRG operates from -40°C to 125°C, exceeding the CQ220-10D's -40°C to 110°C range. For applications within the original temperature range, the substitute provides additional thermal margin. Applications requiring operation above 110°C cannot use this substitute.

Q: Is the TO-220-3 package identical between both parts?

A: Both parts use TO-220-3 through-hole packaging with identical mechanical dimensions and pin configuration, ensuring PCB layout compatibility without modification.

Q: What compliance certifications apply to the BTA08-400CRG?

A: The BTA08-400CRG is ROHS3 compliant and REACH unaffected. The CQ220-10D's compliance status is not specified in available documentation.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message