CQ220-12M TRIAC Equivalent & Substitute Parts

Part Overview

The CQ220-12M is an internally triggered TRIAC rated for 600 V off-state voltage and 12 A on-state current in a TO-220-3 through-hole package. This component is classified as obsolete, making equivalent and substitute parts necessary for new designs and ongoing production support. Substitute TRIACs must maintain compatibility with the 600 V voltage class and support the required current-handling capacity while accommodating differences in gate trigger characteristics and TRIAC type classifications.

Substiute Parts

CQ220-12M

Central Semiconductor CorpIn Stock: 922CQ220-12M Datasheet

Current PartRFQ

BTA08-600SRG

STMicroelectronicsIn Stock: 2045BTA08-600SRG Datasheet

MFR RecommendedRFQ

BTA212-600E,127

WeEn SemiconductorsIn Stock: 961BTA212-600E,127 Datasheet

MFR RecommendedRFQ

BTB08-600CRG

STMicroelectronicsIn Stock: 1892BTB08-600CRG Datasheet

MFR RecommendedRFQ

T1225T-6I

STMicroelectronicsIn Stock: 1928T1225T-6I Datasheet

MFR RecommendedRFQ

T810H-6T

STMicroelectronicsIn Stock: 2106T810H-6T Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CQ220-12M is determined by the following criteria:

Mandatory Parameters:

• Voltage - Off State: 600 V (all substitutes must match)
• Package / Case: TO-220-3 (all substitutes must match)
• Mounting Type: Through Hole (all substitutes must match)

Current Rating Compatibility:

• Current - On State (It (RMS)) (Max): Substitutes rated at 8 A or 12 A are acceptable. The 8 A rated parts (BTA08-600SRG, BTB08-600CRG, T810H-6T) operate within the 12 A design envelope and are suitable for applications not requiring the full 12 A capacity. The 12 A rated parts (BTA212-600E,127, T1225T-6I) provide direct current rating equivalence.

Gate Trigger Characteristics:

• Voltage - Gate Trigger (Vgt) (Max): Substitutes with lower Vgt values (1.0 V to 1.5 V) represent improved gate sensitivity compared to the original 2.5 V specification. These are functionally compatible.
• Current - Gate Trigger (Igt) (Max): Substitutes with 10 mA or 25 mA ratings are compatible with the original 50 mA specification.

TRIAC Type Variations:

• The CQ220-12M is internally triggered. Substitute parts include Logic - Sensitive Gate, Standard, and Alternistor - Snubberless types. These represent different internal gate circuit architectures but maintain functional equivalence for 600 V, 12 A (or 8 A) applications.

Parameter Comparison

Engineering Selection Recommendations

For Direct Current Rating Equivalence (12 A):

• BTA212-600E,127 (WeEn Semiconductors): Active product status with RoHS compliance. Rated for 12 A on-state current with 1.5 V gate trigger voltage. Operating temperature limited to 125°C maximum.
• T1225T-6I (STMicroelectronics): Active product status with ROHS3 compliance. Rated for 12 A on-state current with 1.3 V gate trigger voltage. Alternistor - Snubberless type. Operating temperature range -40°C ~ 125°C.

For Reduced Current Rating (8 A):

• BTA08-600SRG (STMicroelectronics): Active product status with ROHS3 compliance. Rated for 8 A on-state current with 1.3 V gate trigger voltage. Logic - Sensitive Gate type. Operating temperature range -40°C ~ 125°C.
• BTB08-600CRG (STMicroelectronics): Active product status with ROHS3 compliance. Rated for 8 A on-state current with 1.3 V gate trigger voltage. Standard TRIAC type. Operating temperature range -40°C ~ 125°C.
• T810H-6T (STMicroelectronics): Active product status with ROHS3 compliance. Rated for 8 A on-state current with 1.0 V gate trigger voltage. Logic - Sensitive Gate type. Extended operating temperature range -40°C ~ 150°C.

All substitute parts maintain the 600 V voltage class, TO-220-3 package, and through-hole mounting compatibility with the CQ220-12M.

Frequently Asked Questions (FAQ)

Q: Can I use an 8 A rated TRIAC as a substitute for the 12 A CQ220-12M? A: Yes, if your application does not require the full 12 A on-state current capacity. The 8 A rated substitutes (BTA08-600SRG, BTB08-600CRG, T810H-6T) are electrically compatible and operate within the same 600 V voltage class and TO-220-3 package. Verify that your circuit design does not exceed 8 A continuous current.

Q: What is the difference between the TRIAC types listed (Internally Triggered, Logic - Sensitive Gate, Standard, Alternistor)? A: These designations describe the internal gate circuit architecture. All types maintain the same 600 V voltage rating and TO-220-3 package. The primary functional difference is gate trigger sensitivity and response characteristics. Logic - Sensitive Gate types require lower gate trigger current (10 mA) compared to the original internally triggered type (50 mA). Alternistor - Snubberless types are optimized for applications without external snubber networks.

Q: Are all substitute parts RoHS compliant? A: Yes. All active substitute parts listed (BTA08-600SRG, BTA212-600E,127, BTB08-600CRG, T1225T-6I, T810H-6T) are RoHS compliant or ROHS3 compliant. The original CQ220-12M is obsolete and RoHS status is not specified.

Q: Can I interchange these parts without circuit modifications? A: All substitute parts share the same TO-220-3 package pinout and 600 V voltage rating. However, differences in gate trigger voltage (Vgt) and gate trigger current (Igt) may require gate drive circuit adjustments. Parts with lower Vgt values (1.0 V to 1.5 V) compared to the original 2.5 V are more sensitive and may trigger with lower gate drive signals.

Q: Which substitute offers the best compatibility with the original CQ220-12M? A: T1225T-6I provides the closest electrical match: 12 A on-state current rating, 1.3 V gate trigger voltage, 25 mA gate trigger current, and -40°C ~ 125°C operating temperature range. BTA212-600E,127 also matches the 12 A current rating but with a narrower operating temperature specification (125°C maximum).