A201KZQ Toggle Switch DPDT Equivalent & Substitute Parts

Part Overview

The A201KZQ is a toggle switch manufactured by TE Connectivity ALCOSWITCH Switches, configured as a Double Pole Double Throw (DPDT) panel mount switch with a 5A current rating at 120V AC. The switch features a locking lever actuator with solder lug termination and epoxy sealed terminals for environmental protection.

The A201KZQ is classified as an obsolete product. Identification of equivalent and substitute parts is necessary to support ongoing maintenance, repair, and replacement requirements for systems currently utilizing this component. Active production alternatives within the same electrical and mechanical specifications are available to ensure continued system operability.

Substiute Parts

A201KZQ

TE Connectivity ALCOSWITCH SwitchesIn Stock: 842A201KZQ Datasheet

Current PartRFQ

1825138-3

TE Connectivity ALCOSWITCH SwitchesIn Stock: 11861825138-3 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the A201KZQ is based on electrical and mechanical parameter equivalence within the Gemini A series. The substitute part 1825138-3 maintains identical specifications across all critical functional parameters:

Electrical Equivalence Criteria:

• Circuit configuration: DPDT
• Switch function: On-On
• Current rating: 5A (AC/DC)
• Voltage rating: 120V AC / 28V DC
• Electrical life: 6,000 cycles

Mechanical Equivalence Criteria:

• Mounting type: Panel Mount
• Actuator type: Locking Lever
• Actuator length: 16.51mm
• Termination style: Solder Lug
• Panel cutout dimensions: Circular - 6.35mm Dia
• Bushing thread: 1/4-40

The substitute part 1825138-3 is manufactured by the same supplier (TE Connectivity ALCOSWITCH Switches) and belongs to the same product series, ensuring form, fit, and functional compatibility with the original A201KZQ.

Parameter Comparison

Engineering Selection Recommendations

The substitute part 1825138-3 provides direct functional and mechanical replacement for the obsolete A201KZQ. Selection between these parts is determined by product availability and regulatory compliance requirements.

For New Designs and Ongoing Production: The 1825138-3 is the appropriate selection. This part is in active production status with confirmed inventory availability (1145 pcs). The substitute meets ROHS3 compliance requirements, aligning with current environmental and regulatory standards. The extended operating temperature range (-30°C to 85°C versus -20°C to 85°C) provides additional thermal margin for applications operating at lower ambient temperatures.

For Legacy System Maintenance: The A201KZQ remains available in inventory (767 pcs) for direct replacement in existing systems where regulatory compliance with RoHS3 is not a requirement. The A201KZQ maintains identical electrical and mechanical specifications to the substitute part, ensuring functional equivalence in legacy applications.

Regulatory Considerations: The 1825138-3 is ROHS3 compliant and REACH affected, meeting current European Union environmental directives. The A201KZQ is RoHS non-compliant and REACH unaffected, reflecting its obsolete status and earlier manufacturing standards. Selection should account for the regulatory environment of the target application and end-use market.

Frequently Asked Questions (FAQ)

Q: Can the 1825138-3 directly replace the A201KZQ in existing applications?

A: Yes. The 1825138-3 provides direct replacement. All electrical parameters (5A at 120V AC, 28V DC, DPDT On-On configuration), mechanical parameters (panel mount, 16.51mm locking lever, solder lug termination, 6.35mm circular cutout, 1/4-40 bushing thread), and performance specifications (6,000 cycle electrical life, epoxy sealed terminals) are identical. The substitute part is mechanically and electrically interchangeable.

Q: What is the difference in operating temperature range between these parts?

A: The A201KZQ operates from -20°C to 85°C. The 1825138-3 operates from -30°C to 85°C. The substitute part extends the low-temperature operating limit by 10°C, providing additional thermal margin for applications in cold environments. Both parts maintain the same upper temperature limit of 85°C.

Q: Why is the A201KZQ classified as obsolete?

A: The A201KZQ is no longer in active production. The 1825138-3 represents the current active production equivalent within the Gemini A series. Obsolete classification indicates that the manufacturer has transitioned production to successor models. The substitute part maintains full functional and mechanical compatibility while meeting current manufacturing and regulatory standards.

Q: What are the packaging differences between these parts?

A: The A201KZQ is supplied in standard packaging (packaging type not specified in available data). The 1825138-3 is supplied in bulk packaging. Both parts are identical in form, fit, and function. Packaging selection depends on order quantity and inventory management requirements.

Q: Are there compliance differences between the A201KZQ and 1825138-3?

A: Yes. The 1825138-3 is ROHS3 compliant and REACH affected, meeting current European Union environmental regulations. The A201KZQ is RoHS non-compliant and REACH unaffected, reflecting its earlier manufacturing standards. For applications subject to RoHS3 or REACH requirements, the 1825138-3 is the appropriate selection.

Q: What is the Moisture Sensitivity Level (MSL) for these parts?

A: The A201KZQ has MSL classification as Not Applicable. The 1825138-3 has MSL classification of 1 (Unlimited), indicating no moisture sensitivity restrictions for storage or handling. Both parts are suitable for standard warehouse and assembly environments without special moisture control measures.

Q: Can these parts be used interchangeably in the same circuit design?

A: Yes. The electrical specifications are identical: 5A current rating at 120V AC and 28V DC, DPDT On-On configuration, and 6,000 cycle electrical life. The mechanical specifications are identical: panel mount configuration, 16.51mm locking lever actuator, solder lug termination, and 6.35mm circular panel cutout. Circuit designs do not require modification for substitution.