TE Connectivity ALCOSWITCH 8-1437565-2 Equivalent & Substitute Parts

Part Overview

The TE Connectivity ALCOSWITCH 8-1437565-2 is a tactile switch with SPST-NO (Single Pole Single Throw Normally Open) circuit configuration, rated for 0.05A at 24VDC. This surface mount component features a rectangular button actuator with top actuation, designed for applications requiring momentary contact switching. The part is classified as obsolete, necessitating identification of equivalent substitute components for ongoing procurement and design requirements. Substitute parts must maintain functional compatibility while meeting the electrical and mechanical specifications of the original design.

Substiute Parts

8-1437565-2

TE Connectivity ALCOSWITCH SwitchesIn Stock: 8178-1437565-2 Datasheet

Current PartRFQ

TL3302AF180QJ

E-SwitchIn Stock: 20371TL3302AF180QJ Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TE Connectivity 8-1437565-2 is based on the following critical parameters that must align between the original and substitute component:

Mandatory Compatibility Parameters:

• Circuit configuration: SPST-NO
• Switch function: Off-Mom (momentary)
• Mounting type: Surface Mount
• Actuator orientation: Top Actuated
• Outline dimensions: 6.00mm x 3.50mm
• Actuator height: 4.30mm
• Switch travel: 0.25mm
• Moisture sensitivity level: MSL 1

Electrical Parameters for Substitution:

• Contact rating must support minimum 0.05A at operating voltage
• Operating voltage compatibility with application requirements

Mechanical Parameters for Substitution:

• Operating force and actuator material may vary within application tolerance
• Mechanical life cycle rating must meet or exceed application demands

The substitute part TL3302AF180QJ from E-Switch meets the mandatory compatibility parameters while operating at a different voltage rating (12VDC versus 24VDC) and with different operating force and mechanical life specifications.

Parameter Comparison

Engineering Selection Recommendations

Substitution Feasibility:

The TL3302AF180QJ from E-Switch is a functional substitute for the TE Connectivity 8-1437565-2 based on matching circuit configuration, mounting type, physical dimensions, and actuator specifications. Both components are classified as MSL 1 with unlimited moisture sensitivity tolerance and carry EAR99 ECCN designation.

Key Considerations for Selection:

1. Voltage Rating Difference: The substitute operates at 12VDC maximum versus 24VDC for the original. Application circuits must operate at or below 12VDC for direct substitution without circuit modification.

2. Operating Force: The substitute requires 180gf actuation force compared to 100gf for the original. Applications with mechanical constraints or user interface requirements based on lower actuation force must evaluate this difference.

3. Temperature Range: The original component supports -35°C to 85°C operation, while the substitute supports -20°C to 70°C. Applications requiring operation below -20°C or above 70°C cannot use the substitute without thermal analysis.

4. Mechanical Life: The substitute provides 40,000 cycles versus 20,000 cycles for the original, exceeding the original specification and providing enhanced durability for high-cycle applications.

5. Termination Style: The original uses SMD Tab termination while the substitute uses J Lead termination. PCB footprint and assembly process compatibility must be verified.

6. Product Status: The substitute is active production status, ensuring ongoing availability and supply chain continuity compared to the obsolete original component.

7. Compliance: Both components are REACH Unaffected and carry identical HTSUS classification (8536.50.9031), supporting regulatory and procurement requirements.

Frequently Asked Questions (FAQ)

Q: Can the TL3302AF180QJ directly replace the 8-1437565-2 in a 24VDC circuit?

A: No. The TL3302AF180QJ is rated for maximum 12VDC operation. Direct substitution in a 24VDC circuit will result in component failure. Circuit voltage must be reduced to 12VDC or lower, or an alternative substitute rated for 24VDC must be selected.

Q: What is the impact of the 80gf difference in operating force?

A: The substitute requires 80gf additional actuation force (180gf versus 100gf). This affects user interface feel and may impact applications with mechanical constraints, accessibility requirements, or specific tactile feedback specifications. Mechanical testing is necessary if operating force is a critical design parameter.

Q: Are the physical dimensions identical between the two parts?

A: Yes. Both components share identical outline dimensions (6.00mm x 3.50mm), actuator height (4.30mm), and switch travel (0.25mm). PCB layout compatibility is maintained for these parameters.

Q: What is the difference between SMD Tab and J Lead termination?

A: SMD Tab termination (original) uses flat contact tabs for surface mount assembly. J Lead termination (substitute) uses bent leads forming a J-shape for surface mount connection. PCB footprint design differs between these termination styles, requiring footprint verification before substitution.

Q: Does the substitute meet the original operating temperature range?

A: No. The substitute operates from -20°C to 70°C, while the original operates from -35°C to 85°C. The substitute does not support the full original temperature range. Applications requiring operation below -20°C or above 70°C cannot use this substitute.

Q: Is the substitute suitable for high-cycle applications?

A: Yes. The substitute provides 40,000 mechanical life cycles compared to 20,000 cycles for the original, exceeding the original specification. High-cycle applications benefit from the enhanced durability rating.

Q: Are both components RoHS compliant?

A: The original component status is not specified in the provided data. The substitute (TL3302AF180QJ) is ROHS3 Compliant. Regulatory compliance verification is required for the original component before substitution decisions.

Q: What packaging format is available for the substitute?

A: The TL3302AF180QJ is supplied in Tape & Reel (TR) packaging format, suitable for automated assembly processes. The original component packaging format is not specified in the provided data.