TE Connectivity ALCOSWITCH 1571634-2 Equivalent & Substitute Parts

Part Overview

The TE Connectivity ALCOSWITCH 1571634-2 is an active, ROHS3-compliant tactile switch with SPST-NO circuit configuration, rated for 0.05A at 24VDC. This surface-mount component features top actuation with gull wing termination and is designed for momentary off-mom switching applications. Alternative equivalent parts are necessary when addressing specific application requirements including voltage rating variations, actuator height specifications, operating temperature ranges, or packaging format preferences while maintaining core functional compatibility.

Substiute Parts

1571634-2

TE Connectivity ALCOSWITCH SwitchesIn Stock: 17331571634-2 Datasheet

Current PartRFQ

TSM9W-5.2-260-TR

E-SwitchIn Stock: 3914TSM9W-5.2-260-TR Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TE Connectivity ALCOSWITCH 1571634-2 is determined by strict alignment of the following core parameters:

Mandatory Compatibility Parameters:

• Circuit configuration: SPST-NO
• Switch function: Off-Mom
• Contact rating current: 0.05A
• Mounting type: Surface Mount
• Actuator orientation: Top Actuated
• Termination style: Gull Wing
• Actuator material: Silicone Rubber
• Product status: Active
• RoHS compliance: ROHS3 Compliant

Variable Parameters Permitting Substitution:

• Contact voltage rating (provided application voltage does not exceed substitute rating)
• Actuator height off PCB (within mechanical envelope constraints)
• Outline dimensions (within PCB layout tolerances)
• Operating force (within user actuation requirements)
• Operating temperature range (provided application operates within substitute range)
• Packaging format (Cut Tape vs. Tape & Reel)

The identified substitute TSM9W-5.2-260-TR from E-Switch maintains all mandatory compatibility parameters while presenting variations in voltage rating, actuator height, operating force, and temperature range that require application-specific evaluation.

Parameter Comparison

Engineering Selection Recommendations

Primary Part Selection (TE Connectivity 1571634-2): Select this part for applications requiring 24VDC operation, extended temperature range operation from -35°C to 85°C, lower actuation force (160gf), and cut tape packaging. This part maintains active product status with ROHS3 compliance and unlimited moisture sensitivity rating.

Substitute Part Selection (E-Switch TSM9W-5.2-260-TR): The E-Switch TSM9W-5.2-260-TR serves as a functional substitute only for applications operating at 12VDC or lower voltage levels, within the -20°C to 70°C temperature range, where higher actuation force (260gf) is acceptable, and tape & reel packaging is preferred. This part maintains active product status with ROHS3 compliance and unlimited moisture sensitivity rating.

Substitution Constraints: The E-Switch substitute cannot be used in applications requiring 24VDC operation, as its contact rating is specified at 12VDC maximum. Applications requiring operation below -20°C or above 70°C must use the primary TE Connectivity part. Mechanical envelope constraints must be evaluated for the 0.20mm height and 0.10mm width dimensional differences.

Frequently Asked Questions (FAQ)

Q: Can the E-Switch TSM9W-5.2-260-TR be used in a 24VDC circuit?

A: No. The E-Switch substitute is rated for 0.05A @ 12VDC maximum. Using this part in a 24VDC application exceeds its contact voltage rating and violates electrical specifications.

Q: What is the significance of the 100gf operating force difference between these parts?

A: The TE Connectivity 1571634-2 requires 160gf actuation force, while the E-Switch TSM9W-5.2-260-TR requires 260gf. This 100gf difference affects user actuation effort and must be evaluated against application ergonomic and mechanical requirements.

Q: Are the dimensional differences between these parts critical?

A: The E-Switch substitute is 0.20mm taller (5.20mm vs. 5.00mm) and 0.10mm wider (6.30mm vs. 6.20mm). These differences must be evaluated against PCB layout constraints, enclosure clearances, and mechanical assembly requirements.

Q: Can the TE Connectivity part be used in applications with -20°C to 70°C temperature requirements?

A: Yes. The TE Connectivity 1571634-2 operates across -35°C to 85°C, which encompasses the -20°C to 70°C range. However, the E-Switch substitute cannot be used in applications requiring operation outside its -20°C to 70°C range.

Q: What is the difference between Cut Tape and Tape & Reel packaging?

A: Cut Tape (CT) packaging provides individual component strips suitable for smaller volume applications and manual assembly. Tape & Reel (TR) packaging provides continuous reel format optimized for automated pick-and-place assembly equipment and higher volume production.

Q: Are both parts RoHS3 compliant?

A: Yes. Both the TE Connectivity 1571634-2 and E-Switch TSM9W-5.2-260-TR are ROHS3 compliant with unlimited moisture sensitivity rating (MSL 1).

Q: What does SPST-NO circuit configuration mean?

A: SPST-NO designates Single Pole Single Throw Normally Open. The switch has one pole, one throw position, and remains in the open (non-conducting) state until actuated.

Q: Can these parts be used interchangeably in existing designs?

A: No. Substitution requires application-specific evaluation of voltage rating, temperature range, actuator force, and mechanical envelope constraints. Direct interchange without design review is not permitted.