3ATL640 Tactile Switch SPST-NO Equivalent & Substitute Parts

Part Overview

The 3ATL640 is an illuminated tactile switch manufactured by MEC Switches, part of the Multimec® 3 series. This component is a SPST-NO (Single Pole Single Throw - Normally Open) switch with top actuation, designed for through-hole mounting with a 0.05A contact rating at 24VDC. The switch features yellow LED illumination and sealed construction for IP67 ingress protection.

The 3ATL640 is classified as obsolete. Locating equivalent substitute parts is necessary to maintain design continuity and ensure component availability for new production runs or system upgrades.

Substiute Parts

3ATL640

MEC SwitchesIn Stock: 9603ATL640 Datasheet

Current PartRFQ

5GTH93542

MEC SwitchesIn Stock: 63415GTH93542 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The 5GTH93542 qualifies as a direct substitute for the 3ATL640 based on the following critical parameters that determine functional compatibility:

Matching Parameters:

• Circuit configuration: SPST-NO
• Switch function: Off-Mom (Momentary)
• Contact rating: 0.05A @ 24VDC
• Actuator type: Plunger for Cap
• Mounting type: Through Hole
• Actuator height off PCB: 6.40mm
• Actuator orientation: Top Actuated
• Termination style: PC Pin
• Outline dimensions: 10.10mm x 10.10mm
• Illumination: Illuminated - LED, Yellow
• Switch travel: 1.00mm
• Mechanical life: 10,000,000 Cycles
• Ingress protection: IP67 - Dust Tight, Waterproof
• RoHS compliance: ROHS3 Compliant
• Moisture sensitivity level: 1 (Unlimited)

The 5GTH93542 belongs to the Multimec® 5 series and maintains active product status, providing improved long-term availability compared to the obsolete 3ATL640.

Parameter Comparison

Engineering Selection Recommendations

The 5GTH93542 is the qualified substitute for the obsolete 3ATL640. Both components maintain ROHS3 compliance and identical electrical contact ratings. The substitute is manufactured by the same supplier (MEC Switches) and maintains the same physical footprint and mounting interface.

The 5GTH93542 is currently in active production status, ensuring component availability and supply chain continuity. The substitute's extended operating temperature range (-40°C to 160°C versus -40°C to 115°C) and improved actuator material (PPS versus PBT) provide enhanced performance characteristics for demanding applications.

Design considerations for substitution include the 50gf increase in operating force (350gf versus 300gf) and the minor reduction in illumination voltage (2.0 VDC versus 2.1 VDC). These variations remain within acceptable engineering tolerances for standard tactile switch applications.

Frequently Asked Questions (FAQ)

Q: Can the 5GTH93542 be used as a direct replacement for the 3ATL640 in existing designs?

A: Yes. Both components share identical circuit configuration (SPST-NO), contact rating (0.05A @ 24VDC), physical footprint (10.10mm x 10.10mm), actuator height (6.40mm), and mounting type (through-hole PC pin). The components are mechanically and electrically interchangeable.

Q: What are the key differences between these two parts?

A: The primary differences are product status (obsolete versus active), series generation (Multimec® 3 versus Multimec® 5), operating force (300gf versus 350gf), operating temperature range (-40°C to 115°C versus -40°C to 160°C), actuator material (PBT versus PPS), and illumination voltage (2.1 VDC versus 2.0 VDC).

Q: Does the 50gf increase in operating force affect circuit performance?

A: The operating force difference does not affect electrical performance. This parameter determines the tactile feedback and actuation effort required by the user. Applications requiring specific actuation force characteristics should evaluate this difference during design validation.

Q: Are there packaging differences between these parts?

A: The 3ATL640 packaging is not specified in available documentation. The 5GTH93542 is supplied in tube packaging. Confirm packaging requirements for your procurement and assembly processes.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the 3ATL640 and 5GTH93542 are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99 and HTSUS 8536.50.9031.

Q: What is the significance of the different actuator materials?

A: The 3ATL640 uses Polybutylene Terephthalate (PBT), while the 5GTH93542 uses Polyphenylene Sulfide (PPS). PPS offers superior thermal stability and chemical resistance, supporting the 5GTH93542's extended operating temperature range to 160°C.