ADP02 Equivalent & Substitute Parts

Part Overview

The ADP02 is a DIP switch manufactured by TE Connectivity ALCOSWITCH Switches, configured as a single-pole single-throw (SPST) switch with 2 positions. The switch features a piano actuator, through-hole right-angle mounting, and is rated for 25mA at 24VDC operation across a temperature range of -30°C to 85°C. The ADP02 is classified as obsolete, necessitating identification of equivalent and substitute components for ongoing design support and procurement requirements. Active alternatives are available from TE Connectivity and third-party manufacturers that maintain electrical and mechanical compatibility within specified parameters.

Substiute Parts

ADP02

TE Connectivity ALCOSWITCH SwitchesIn Stock: 808ADP02 Datasheet

Current PartRFQ

1571999-1

TE Connectivity ALCOSWITCH SwitchesIn Stock: 20901571999-1 Datasheet

DirectRFQ

KAP1102E

E-SwitchIn Stock: 1764KAP1102E Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the obsolete ADP02 is determined by strict equivalence across the following critical parameters: circuit configuration (SPST), number of positions (2), current rating (25mA), voltage rating (24VDC), actuator type (piano), mounting configuration (through-hole right-angle), pitch spacing (0.100"), and termination style (PC pin).

The substitute parts identified maintain these core electrical and mechanical specifications, ensuring functional compatibility in existing circuit designs. Variations in secondary parameters such as body material, contact material composition, height above board, and mechanical/electrical life cycles are documented to support engineering evaluation based on specific application requirements.

Two substitute relationships are established:

Direct Equivalent (1571999-1): TE Connectivity ALCOSWITCH Switches part maintains identical electrical ratings and actuator specifications with minor dimensional variations and upgraded RoHS3 compliance status.

Similar Equivalent (KAP1102E): E-Switch part maintains identical electrical ratings and core mechanical specifications with documented variations in body material, contact material, height, and operational cycle ratings.

Parameter Comparison

Engineering Selection Recommendations

1571999-1 Selection Criteria

The 1571999-1 represents the direct equivalent replacement for the obsolete ADP02. Both components are manufactured by TE Connectivity ALCOSWITCH Switches and maintain identical electrical specifications and core mechanical dimensions. The 1571999-1 is classified as active product status, ensuring long-term availability and supply chain continuity. The part achieves RoHS3 compliance, addressing regulatory requirements for new designs and procurement cycles. Dimensional variations are minimal (height differential of 0.007", length differential of 0.002"), presenting negligible impact on PCB layout and mechanical assembly. The 1571999-1 is the preferred substitute for direct replacement applications where TE Connectivity component continuity is required.

KAP1102E Selection Criteria

The KAP1102E is an active product from E-Switch that maintains electrical equivalence across all critical parameters: SPST configuration, 2-position operation, 25mA current rating, and 24VDC voltage rating. This part is suitable for applications where cross-manufacturer substitution is acceptable. The KAP1102E provides extended mechanical and electrical life ratings (2,000 cycles versus 1,000 cycles), offering enhanced durability for high-cycle applications. The component achieves RoHS3 compliance. Notable differences include increased height above board (0.402" versus 0.294"), different body material composition (glass-filled PBT versus PPS), and non-washable classification. The KAP1102E is appropriate for new designs or applications where the extended operational life and alternative material properties provide design advantages, provided PCB layout accommodates the increased height profile.

Compliance and Regulatory Considerations

Both substitute parts achieve RoHS3 compliance, supporting procurement for regulated markets and new product designs. The original ADP02 is RoHS non-compliant, making substitution necessary for applications subject to RoHS directives. Both substitutes maintain REACH unaffected status and EAR99 export classification consistent with the original part.

Frequently Asked Questions (FAQ)

Q: Can the 1571999-1 be used as a direct drop-in replacement for the ADP02?

A: Yes. The 1571999-1 maintains identical electrical specifications (SPST, 2-position, 25mA, 24VDC) and core mechanical dimensions. Dimensional variations are minimal (0.007" height difference, 0.002" length difference) and do not impact standard PCB layouts designed for 0.100" pitch through-hole mounting. Both components feature identical actuator type, termination style, and contact finish specifications.

Q: What are the key differences between the 1571999-1 and KAP1102E?

A: Both parts maintain electrical equivalence. Primary differences include: manufacturer (TE Connectivity versus E-Switch), body material (PPS versus glass-filled PBT), height above board (0.287" versus 0.402"), mechanical/electrical life (1,000 versus 2,000 cycles), washability (yes versus no), and operating temperature lower limit (-30°C versus -40°C). The KAP1102E is suitable for applications requiring extended cycle life or cross-manufacturer sourcing.

Q: Are there height clearance considerations when substituting with the KAP1102E?

A: Yes. The KAP1102E has a height above board of 0.402" compared to the ADP02 at 0.294". This 0.108" increase requires verification of available clearance above the PCB. Applications with restricted vertical space may require design modification or selection of the 1571999-1, which maintains the original height profile within 0.007".

Q: Do the substitute parts maintain the same pitch spacing?

A: Yes. Both 1571999-1 and KAP1102E maintain 0.100" (2.54mm) pitch spacing, ensuring compatibility with existing PCB footprints designed for the ADP02.

Q: What is the impact of different contact materials on performance?

A: The ADP02 and 1571999-1 use copper alloy contacts, while the KAP1102E uses phosphor bronze contacts. Both materials are gold-finished and suitable for 25mA switching at 24VDC. Contact material selection does not impact electrical performance within the specified current and voltage ratings. Material selection reflects manufacturer design approach and does not constitute a functional limitation.

Q: Is the non-washable classification of the KAP1102E a limitation?

A: The KAP1102E is classified as non-washable, while the ADP02 and 1571999-1 are washable. This distinction is relevant only for applications requiring post-assembly cleaning processes. For standard assembly and operation, washability classification does not impact functional performance.

Q: Which substitute part should be selected for new product designs?

A: For new designs requiring TE Connectivity component continuity, select the 1571999-1. For designs where cross-manufacturer sourcing is acceptable and extended cycle life is beneficial, the KAP1102E is appropriate. Both parts achieve RoHS3 compliance, supporting regulatory requirements for new products.

Q: Are both substitute parts available in the same packaging as the original ADP02?

A: The ADP02 is supplied in bulk packaging. The 1571999-1 is also supplied in bulk packaging. The KAP1102E is supplied in tube packaging. Packaging selection may impact procurement processes and inventory management but does not affect component functionality or performance.