CQ92D APM Equivalent & Substitute Parts

Part Overview

The CQ92D APM is an internally triggered TRIAC rated for 400 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 in the 400 V range.

Substiute Parts

CQ92D APM

Central Semiconductor CorpIn Stock: 998CQ92D APM Datasheet

Current PartRFQ

L401E3

Littelfuse Inc.In Stock: 2255L401E3 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CQ92D APM is determined by the following critical electrical and mechanical parameters:

• Off-state voltage rating of 400 V or higher
• On-state current rating of 1 A or higher
• Gate trigger voltage (Vgt) at or below 2 V maximum
• Gate trigger current (Igt) at or below 5 mA maximum
• Hold current (Ih) at or below 5 mA maximum
• Through-hole mounting in TO-92-3 package configuration
• Operating temperature range encompassing -40°C to 125°C

The L401E3 from Littelfuse Inc. meets these substitution criteria as a logic-sensitive gate TRIAC with equivalent voltage and current ratings in the same package format.

Parameter Comparison

Engineering Selection Recommendations

The L401E3 is a direct functional substitute for the CQ92D APM based on electrical and mechanical compatibility. The L401E3 offers superior specifications in gate trigger parameters (Vgt 1.3 V vs. 2 V, Igt 3 mA vs. 5 mA) and an extended lower operating temperature limit (-65°C vs. -40°C). The L401E3 maintains active product status with ROHS3 compliance, providing supply chain continuity and regulatory alignment for new designs and production replacements. Both components share identical package configuration and mounting methodology, enabling direct board-level substitution without layout modification.

Frequently Asked Questions (FAQ)

Q: Can the L401E3 replace the CQ92D APM in existing applications?

A: Yes. Both components share identical off-state voltage (400 V), on-state current (1 A), and package configuration (TO-92-3 through-hole). The L401E3 meets or exceeds all specified electrical parameters of the CQ92D APM.

Q: What is the difference between internally triggered and logic-sensitive gate TRIAC types?

A: Both are TRIAC configurations suitable for AC switching. The internally triggered type (CQ92D APM) and logic-sensitive gate type (L401E3) differ in gate control architecture but deliver equivalent switching performance at the specified voltage and current ratings.

Q: Are there package compatibility concerns?

A: No. Both the CQ92D APM and L401E3 use the TO-92-3 through-hole package. Pin configuration and board footprint are identical, permitting direct substitution without PCB redesign.

Q: Why is the CQ92D APM obsolete?

A: The CQ92D APM is classified as obsolete by the manufacturer. The L401E3 provides equivalent functionality with active product status and modern compliance certifications (ROHS3).

Q: Does the L401E3 require different circuit design considerations?

A: No design changes are required. The L401E3 operates within the same voltage and current parameters as the CQ92D APM. Gate trigger specifications of the L401E3 are more stringent (lower Vgt and Igt), making it compatible with existing gate drive circuits.

Q: What is the operating temperature range difference?

A: The CQ92D APM operates from -40°C to 125°C. The L401E3 extends the lower limit to -65°C, providing broader thermal operating capability without affecting upper temperature performance.