TE Connectivity ALCOSWITCH 5435640-2 DIP Switch Equivalent & Substitute Parts

Part Overview

The TE Connectivity ALCOSWITCH 5435640-2 is a 4-position DIP switch with rocker actuator, rated for 60mA at 5VDC, designed for through-hole mounting applications. This component is classified as Last Time Buy, indicating discontinued production status. Identification of equivalent and substitute parts is necessary to support ongoing design requirements, inventory planning, and long-term product support where the original part number is no longer available from standard distribution channels.

Substiute Parts

5435640-2

TE Connectivity ALCOSWITCH SwitchesIn Stock: 72685435640-2 Datasheet

Current PartRFQ

1825057-3

TE Connectivity ALCOSWITCH SwitchesIn Stock: 30041825057-3 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 5435640-2 is based on the following electrical and mechanical parameters that define functional compatibility:

Mandatory Matching Parameters:

• Circuit configuration: SPST
• Number of positions: 4
• Mounting type: Through hole
• Pitch: 0.100" (2.54mm)
• Contact material and finish: Copper alloy with gold plating
• Termination style: PC pin

Allowable Parameter Variations:

• Current rating: Substitute must equal or exceed 60mA
• Voltage rating: Substitute must equal or exceed 5VDC
• Actuator type: May differ (rocker to slide transition acceptable)
• Operating temperature range: May be narrower than original
• Mechanical and electrical life cycles: May be lower than original
• Body material: May differ while maintaining structural integrity
• Height above board: May vary within PCB assembly constraints

The substitute part TE Connectivity ALCOSWITCH 1825057-3 satisfies all mandatory matching parameters and exceeds electrical performance requirements with 100mA current rating and 24VDC voltage rating.

Parameter Comparison

Engineering Selection Recommendations

Primary Consideration: Product Status

The 5435640-2 carries Last Time Buy status, indicating end-of-life production. The substitute part 1825057-3 maintains Active product status with TE Connectivity ALCOSWITCH, ensuring continued availability and supply chain stability.

Compliance and Certification

Both parts maintain ROHS3 compliance and MSL Level 1 (Unlimited) moisture sensitivity rating, supporting deployment in standard manufacturing and storage environments without special handling requirements. The substitute part carries REACH Unaffected status, providing additional regulatory clarity for international applications.

Electrical Performance

The substitute part 1825057-3 exceeds the electrical specifications of the original part. With 100mA current rating versus 60mA and 24VDC voltage rating versus 5VDC, the substitute accommodates higher-power applications while remaining compatible with the original 5VDC circuit through design margin. This performance headroom supports design flexibility and reduces component stress in operational service.

Mechanical and Thermal Considerations

The substitute part features a lower profile (0.228" versus 0.340" above board), which may provide advantages in space-constrained PCB layouts. The operating temperature range of the substitute (-30°C to 85°C) is narrower than the original (-55°C to 105°C); applications requiring extended low-temperature operation below -30°C or high-temperature operation above 85°C require evaluation against specific environmental requirements.

The substitute part exhibits reduced mechanical and electrical life cycles (1,000 cycles versus 2,000 cycles). Applications with high-frequency switching or extended operational life cycles should assess cumulative cycle counts against expected service life.

Actuator Type Transition

The substitute part transitions from rocker to slide (standard) actuator. This change affects user interface and panel integration. PCB footprint compatibility is maintained through identical pitch (0.100") and termination style (PC pin), but mechanical mounting and actuator engagement characteristics differ and require panel design review.

Frequently Asked Questions (FAQ)

Q: Can the 1825057-3 directly replace the 5435640-2 in existing designs?

A: The 1825057-3 maintains electrical and mechanical compatibility through identical circuit configuration (SPST), position count (4), pitch (0.100"), and termination style (PC pin). However, the actuator type change from rocker to slide requires panel redesign and mechanical integration review. PCB-level compatibility is confirmed; system-level integration requires validation.

Q: What are the key differences in electrical performance?

A: The substitute part 1825057-3 provides higher electrical ratings: 100mA current capacity versus 60mA, and 24VDC voltage rating versus 5VDC. Both parts are suitable for 5VDC applications; the substitute provides additional performance margin. No circuit modification is required for voltage compatibility.

Q: Are there temperature range limitations with the substitute part?

A: The substitute part operates from -30°C to 85°C, compared to the original -55°C to 105°C range. Applications requiring operation below -30°C or above 85°C must evaluate alternative solutions or confirm that operating conditions remain within the substitute part's specified range.

Q: How do the mechanical life cycles compare?

A: The original part specifies 2,000 mechanical and electrical cycles; the substitute part specifies 1,000 cycles. Applications with high-frequency switching or extended operational life should calculate cumulative cycle counts over the intended service life to confirm adequacy.

Q: What is the impact of the height difference?

A: The substitute part is 0.112" (2.84mm) lower in profile (0.228" versus 0.340" above board). This reduction may provide benefits in space-constrained designs but requires confirmation that the lower profile does not conflict with adjacent components or enclosure constraints.

Q: Are both parts RoHS compliant?

A: Yes, both the 5435640-2 and 1825057-3 are ROHS3 compliant. The substitute part additionally carries REACH Unaffected status, providing enhanced regulatory documentation for international markets.

Q: What is the washable characteristic difference?

A: The original part 5435640-2 is not washable; the substitute part 1825057-3 is washable. This difference may be relevant for manufacturing processes involving aqueous cleaning or flux removal. Confirm compatibility with your manufacturing process requirements.

Q: Does the body material change affect performance?

A: The original part uses polyester (PET) glass-filled material; the substitute uses polyphenylene sulfide (PPS). Both materials provide adequate structural integrity and electrical insulation for DIP switch applications. The PPS material in the substitute part may offer improved chemical resistance in certain environments.