TE Connectivity ALCOSWITCH 1571927-9 Equivalent & Substitute Parts

Part Overview

The TE Connectivity ALCOSWITCH 1571927-9 is a toggle switch with DPDT (Double Pole Double Throw) circuit configuration, rated for 6A at 125V AC and 4A at 28V DC. This component features a locking lever actuator, panel mount configuration, and solder lug termination. The product is classified as obsolete, making identification of equivalent substitute parts essential for ongoing maintenance, repair, and new design applications where legacy component compatibility is required.

Substiute Parts

1571927-9

TE Connectivity ALCOSWITCH SwitchesIn Stock: 12251571927-9 Datasheet

Current PartRFQ

7205SYZQE

C&KIn Stock: 14737205SYZQE Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the TE Connectivity ALCOSWITCH 1571927-9 are identified based on functional and mechanical compatibility within the following critical parameters:

Circuit and Function Compatibility: The substitute must maintain DPDT circuit configuration with Mom-Off-Mom switch function to ensure electrical behavior equivalence.

Electrical Ratings: Substitute parts must meet or exceed the voltage and current requirements. The main part operates at 6A/125V AC and 4A/28V DC. Acceptable substitutes must support these or higher ratings across both AC and DC specifications.

Mechanical Interface: Panel mount configuration, solder lug termination, 1/4-40 bushing thread, and circular panel cutout dimensions must align to ensure physical installation compatibility.

Environmental and Operational Specifications: Operating temperature range, actuator type, and electrical life cycle ratings determine functional equivalence in field applications.

The C&K 7205SYZQE qualifies as a substitute based on matching DPDT circuit, Mom-Off-Mom function, panel mount design, solder lug termination, 1/4-40 bushing thread, and compatible panel cutout dimensions. Electrical ratings of 5A/120V AC and 28V DC meet the operational envelope of the original part.

Parameter Comparison

Engineering Selection Recommendations

Product Status Consideration: The TE Connectivity ALCOSWITCH 1571927-9 is classified as obsolete, indicating discontinued manufacturing and limited availability. The C&K 7205SYZQE maintains active product status with current manufacturing support, ensuring long-term supply chain reliability and availability for replacement and new applications.

Compliance and Certifications: The C&K 7205SYZQE is RoHS3 compliant and REACH affected, indicating adherence to current environmental and regulatory standards. Both parts share the same ECCN (EAR99) and HTSUS classification, confirming equivalent trade and export compliance status.

Electrical Rating Considerations: The substitute part operates at 5A/120V AC compared to the original 6A/125V AC specification. Applications requiring the full 6A capacity at 125V AC must evaluate whether the 5A/120V AC rating of the substitute meets operational requirements. DC ratings show the substitute (5A/28V) exceeds the original (4A/28V), providing margin in DC applications.

Electrical Life Cycle: The original part specifies 60,000 electrical cycles versus the substitute's 40,000 cycles. Applications with high-frequency switching requirements should assess whether the reduced cycle rating impacts expected service life.

Mechanical Compatibility: Panel cutout dimensions differ by 0.05mm (6.40mm versus 6.35mm), representing a negligible variance within standard manufacturing tolerances for panel mount applications. All other mechanical parameters, including bushing thread and termination style, are identical.

Temperature Operating Range: The substitute provides an extended operating temperature range (-30°C to 85°C) compared to the original (-20°C to 80°C), offering improved performance in extreme temperature environments.

Frequently Asked Questions (FAQ)

Q: Can the C&K 7205SYZQE directly replace the TE Connectivity ALCOSWITCH 1571927-9 in all applications?

A: Direct replacement is possible for most applications. However, two factors require evaluation: (1) AC current capacity is reduced from 6A to 5A, and (2) electrical life is reduced from 60,000 to 40,000 cycles. Applications operating at or near 6A AC or requiring extended cycle life should confirm the substitute meets performance requirements.

Q: What is the significance of the panel cutout dimension difference (6.40mm versus 6.35mm)?

A: The 0.05mm difference is within standard manufacturing tolerances for panel mount switches. Existing panel cutouts designed for the original 6.40mm diameter will accommodate the 6.35mm substitute without modification.

Q: Are there any compliance or regulatory differences between these parts?

A: Both parts share identical ECCN (EAR99) and HTSUS classifications. The substitute is RoHS3 compliant and REACH affected, representing current regulatory compliance. The original part's REACH status is unaffected, indicating it predates current REACH requirements. For new designs and applications subject to current environmental regulations, the substitute's compliance status is advantageous.

Q: How does the electrical life cycle difference affect component selection?

A: The original part is rated for 60,000 cycles; the substitute for 40,000 cycles. This represents a 33% reduction in rated cycle life. Applications with predictable switching patterns below 40,000 cycles are unaffected. High-frequency switching applications should calculate expected cycle accumulation over the intended service life to determine if the reduced rating is acceptable.

Q: What is the impact of the extended operating temperature range of the substitute?

A: The substitute operates from -30°C to 85°C compared to the original -20°C to 80°C. This provides 10°C additional margin at both temperature extremes, offering improved performance in cold and hot environments without functional degradation.

Q: Are the actuator types interchangeable?

A: The original part features a locking lever actuator (17.00mm length); the substitute features a standard round actuator (10.67mm length). While both are panel mount toggle switches with identical electrical function, the different actuator designs may affect user interface feel and operational characteristics. Physical installation compatibility is maintained through matching bushing threads and panel cutout dimensions.

Q: What packaging considerations apply to these parts?

A: The original part is packaged in standard format; the substitute is supplied in bulk packaging. Bulk packaging typically offers cost advantages for high-volume applications but may require internal repackaging for controlled inventory management in smaller-volume operations.