TE Connectivity ALCOSWITCH 8-1437577-1 Equivalent & Substitute Parts

Part Overview

The TE Connectivity ALCOSWITCH 8-1437577-1 is a slide switch with DPDT (Double Pole Double Throw) circuit configuration, rated for 300mA AC at 125V. This through-hole, right-angle mounted switch features a standard actuator with 5.00mm length and is designed for applications requiring reliable contact switching with shorting contact timing (MBB - Make Before Break).

The 8-1437577-1 carries an obsolete product status. Identification of equivalent substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and support ongoing production or repair requirements for legacy systems utilizing this component.

Substiute Parts

8-1437577-1

TE Connectivity ALCOSWITCH SwitchesIn Stock: 7818-1437577-1 Datasheet

Current PartRFQ

1825167-1

TE Connectivity ALCOSWITCH SwitchesIn Stock: 8661825167-1 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 8-1437577-1 is determined by strict equivalence across all electrical and mechanical parameters. The following criteria establish valid substitution:

Electrical Parameters (Must Match Exactly):

• Circuit configuration: DPDT
• Contact timing: Shorting (MBB)
• Switch function: On-On
• Current rating: 300mA AC
• Voltage rating: 125V AC

Mechanical Parameters (Must Match Exactly):

• Actuator type: Standard
• Actuator length: 5.00mm
• Mounting type: Through Hole, Right Angle
• Termination style: PC Pin
• Switch travel: 2.50mm
• Operating force: 250gf

Material & Construction Parameters (Must Match Exactly):

• Contact material: Copper Alloy
• Contact finish: Silver
• Actuator material: Polyoxymethylene (Acetal) (POM)
• Features: Epoxy Sealed Terminals

Environmental Parameters (Must Match Exactly):

• Operating temperature range: -10°C to 60°C
• Series: STSA

Parts meeting all these criteria are classified as direct electrical and mechanical equivalents suitable for substitution in applications originally designed for the 8-1437577-1.

Parameter Comparison

Engineering Selection Recommendations

The TE Connectivity ALCOSWITCH 1825167-1 is a direct electrical and mechanical equivalent to the 8-1437577-1. All functional parameters, including circuit configuration, electrical ratings, mechanical dimensions, contact materials, and environmental specifications, are identical.

Product Status Consideration: The 8-1437577-1 carries an obsolete designation, while the 1825167-1 is classified as active. For new designs, ongoing production, or long-term supply chain planning, the 1825167-1 is the appropriate selection.

Compliance Consideration: The 1825167-1 is ROHS3 compliant, whereas the 8-1437577-1 is RoHS non-compliant. Applications subject to RoHS regulatory requirements must utilize the 1825167-1. For legacy systems or applications without RoHS compliance mandates, either part satisfies the electrical and mechanical requirements.

Availability: The 1825167-1 is currently in active production with documented inventory availability (814 Pcs New Original In Stock), ensuring reliable supply for both immediate and future requirements.

Frequently Asked Questions (FAQ)

Q: Can the 1825167-1 be used as a direct replacement for the 8-1437577-1 in existing designs?

A: Yes. The 1825167-1 is electrically and mechanically equivalent to the 8-1437577-1. All functional parameters, including DPDT circuit configuration, 300mA AC current rating, 125V AC voltage rating, through-hole right-angle mounting, PC pin termination, and mechanical specifications are identical. Direct substitution is supported without design modification.

Q: What is the primary difference between these two parts?

A: The primary differences are product status and regulatory compliance. The 8-1437577-1 is obsolete and RoHS non-compliant, while the 1825167-1 is active and ROHS3 compliant. All electrical and mechanical specifications are identical.

Q: Are there any dimensional or footprint differences between the 8-1437577-1 and 1825167-1?

A: No. Both parts share identical mechanical specifications, including actuator length (5.00mm), switch travel (2.50mm), mounting type (through-hole, right-angle), and termination style (PC pin). PCB footprints and mechanical mounting are identical.

Q: Which part should be selected for new designs?

A: The 1825167-1 should be selected for new designs. It is an active product with current manufacturing support, ROHS3 compliance, and documented supply availability. The 8-1437577-1 is obsolete and should not be specified for new applications.

Q: Are both parts suitable for applications requiring RoHS compliance?

A: Only the 1825167-1 is suitable for RoHS-compliant applications. The 1825167-1 carries ROHS3 certification. The 8-1437577-1 is RoHS non-compliant and cannot be used in applications with RoHS regulatory requirements.

Q: What is the contact material and finish for both parts?

A: Both parts feature copper alloy contacts with silver finish. This specification is identical across both the 8-1437577-1 and 1825167-1.

Q: Are the operating temperature ranges the same?

A: Yes. Both parts operate across the identical temperature range of -10°C to 60°C. Environmental performance specifications are equivalent.

Q: What is the mechanical life rating for these switches?

A: Both the 8-1437577-1 and 1825167-1 are rated for 10,000 mechanical cycles. Operating force is 250gf for both parts.