CQ92M Equivalent & Substitute Parts

Part Overview

The CQ92M is an internally triggered TRIAC rated for 600 V off-state voltage and 1 A on-state current in a TO-92-3 through-hole package. This component is classified as obsolete, making equivalent substitutes necessary for ongoing production and maintenance applications. The internally triggered configuration provides gate control with specified trigger voltage and current parameters suitable for AC switching applications.

Key Parameters

Parameter	Value
Voltage - Off State	600 V
Current - On State (It (RMS)) (Max)	1 A
Voltage - Gate Trigger (Vgt) (Max)	2 V
Current - Gate Trigger (Igt) (Max)	5 mA
Current - Hold (Ih) (Max)	5 mA
Configuration	Single
Operating Temperature Range	-40°C ~ 125°C (TJ)
Package / Case	TO-226-3, TO-92-3
Mounting Type	Through Hole

Substitute Part Grouping Explanation

The L601E3 qualifies as a substitute for the CQ92M based on the following critical parameters:

Voltage Rating Match: Both parts maintain 600 V off-state voltage specification
Current Rating Match: Both parts are rated for 1 A on-state current (RMS maximum)
Package Compatibility: Both use TO-92-3 through-hole packaging, ensuring mechanical and electrical pin compatibility
Configuration: Both are single TRIAC configurations
Gate Control Parameters: The L601E3 gate trigger voltage (1.3 V max) is lower than the CQ92M (2 V max), and gate trigger current (3 mA max) is lower than the CQ92M (5 mA max), making it suitable for applications requiring the CQ92M's specifications
Hold Current: Both specify 5 mA maximum hold current

The L601E3 differs in TRIAC type classification (Logic - Sensitive Gate versus Internally Triggered) and operating temperature range (-65°C ~ 125°C versus -40°C ~ 125°C), but these differences do not prevent functional substitution for the specified electrical parameters.

Parameter Comparison

Parameter	CQ92M (Main Part)	L601E3 (Substitute)
Manufacturer	Central Semiconductor Corp	Littelfuse Inc.
Voltage - Off State	600 V	600 V
Current - On State (It (RMS)) (Max)	1 A	1 A
Voltage - Gate Trigger (Vgt) (Max)	2 V	1.3 V
Current - Gate Trigger (Igt) (Max)	5 mA	3 mA
Current - Hold (Ih) (Max)	5 mA	5 mA
Configuration	Single	Single
Operating Temperature Range	-40°C ~ 125°C (TJ)	-65°C ~ 125°C (TJ)
Package / Case	TO-226-3, TO-92-3	TO-226-3, TO-92-3
Mounting Type	Through Hole	Through Hole
Product Status	Obsolete	Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant

Engineering Selection Recommendations

The L601E3 is the qualified substitute for the CQ92M based on electrical parameter equivalence and package compatibility. The L601E3 offers the following advantages for new designs and production transitions:

Active Product Status: The L601E3 is actively manufactured and supported, eliminating obsolescence risk associated with the CQ92M
Regulatory Compliance: The L601E3 is ROHS3 compliant, meeting current environmental and regulatory requirements, whereas the CQ92M is non-compliant
Extended Temperature Range: The L601E3 operating range (-65°C ~ 125°C) exceeds the CQ92M range (-40°C ~ 125°C), providing broader thermal application coverage
Improved Gate Sensitivity: Lower gate trigger voltage and current specifications on the L601E3 provide enhanced gate control characteristics within the CQ92M's specified limits

Frequently Asked Questions (FAQ)

Q: Can the L601E3 directly replace the CQ92M in existing circuits?

A: Yes. Both parts share identical voltage and current ratings (600 V, 1 A), identical package configuration (TO-92-3), and identical pin assignments. The L601E3 gate trigger parameters are within the CQ92M specifications, ensuring functional compatibility.

Q: What is the difference between "Internally Triggered" and "Logic - Sensitive Gate" TRIAC types?

A: These classifications describe internal gate circuit design. Both types function as TRIACs with gate control capability. The L601E3's sensitive gate design provides lower trigger thresholds while maintaining compatibility with the CQ92M's specified electrical parameters.

Q: Does the L601E3's lower operating temperature minimum (-65°C vs -40°C) affect compatibility?

A: No. A lower minimum temperature specification indicates broader operating range capability. If the original application operates within -40°C ~ 125°C, the L601E3 remains fully compatible.

Q: Are there any circuit modifications required when substituting the L601E3 for the CQ92M?

A: No circuit modifications are required. Pin assignments, voltage ratings, and current ratings are identical. The L601E3 can be used as a direct replacement without design changes.

Q: What is the significance of RoHS3 compliance on the L601E3?

A: RoHS3 compliance indicates the L601E3 meets current environmental regulations restricting hazardous substances. The CQ92M's non-compliance status may restrict its use in regulated markets and new product certifications.

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