ADPA02 DIP Switch SPST Piano Actuator Equivalent & Substitute Parts

Part Overview

The ADPA02 is a DIP switch manufactured by TE Connectivity ALCOSWITCH Switches, configured as a single-pole single-throw (SPST) 2-position through-hole component with piano actuator. This switch is rated for 25mA at 24VDC and features a raised piano actuator with gold-plated copper alloy contacts. The ADPA02 is classified as obsolete, necessitating identification of active equivalent parts to maintain design continuity and ensure ongoing component availability for production and field replacement applications.

Substiute Parts

ADPA02

TE Connectivity ALCOSWITCH SwitchesIn Stock: 1047ADPA02 Datasheet

Current PartRFQ

4-1571999-1

TE Connectivity ALCOSWITCH SwitchesIn Stock: 9984-1571999-1 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the obsolete ADPA02 is determined by equivalence across the following critical parameters:

Circuit Configuration: Both the main part and substitute maintain SPST topology, ensuring identical electrical switching behavior.

Number of Positions: Both components provide 2-position switching capability, maintaining functional compatibility.

Actuator Type and Level: Both feature piano actuators with raised actuation levels, ensuring mechanical interchangeability and consistent user interface.

Mounting Type: Both utilize through-hole mounting, supporting direct PCB integration without redesign.

Contact Material and Finish: Both employ copper alloy contacts with gold plating, ensuring equivalent electrical performance and corrosion resistance.

Moisture Sensitivity Level: Both are classified as MSL 1 (Unlimited), indicating identical moisture handling requirements.

Electrical Classification: Both are assigned ECCN EAR99 and HTSUS 8536.50.9065, confirming regulatory equivalence.

The substitute part 4-1571999-1 differs in product status (Active versus Obsolete) and RoHS compliance (ROHS3 Compliant versus Non-Compliant), representing an improved alternative for new designs and applications requiring modern compliance standards.

Parameter Comparison

Engineering Selection Recommendations

For Obsolete Component Replacement: The ADPA02 is classified as obsolete. The substitute part 4-1571999-1 is an active product from the same manufacturer and series, providing direct functional equivalence while ensuring ongoing availability.

For New Designs and Production: Part 4-1571999-1 is recommended for new applications. This substitute achieves ROHS3 compliance, meeting current regulatory requirements for electronic components in most jurisdictions. The active product status ensures long-term supply chain stability and manufacturing support.

For Legacy System Maintenance: Where existing designs incorporate the ADPA02, substitution with 4-1571999-1 is electrically and mechanically compatible. The through-hole mounting configuration and piano actuator interface remain consistent, supporting direct board-level replacement without circuit redesign.

Compliance Consideration: Organizations subject to RoHS directives should transition to 4-1571999-1 to maintain regulatory compliance in new production batches and field replacements.

Frequently Asked Questions (FAQ)

Q: Can the 4-1571999-1 directly replace the ADPA02 in existing designs?

A: Yes. Both components share identical circuit configuration (SPST), position count (2), actuator type (piano, raised), and mounting method (through-hole). Electrical and mechanical compatibility is maintained. The substitute is a direct functional replacement.

Q: What is the primary difference between these two parts?

A: The ADPA02 is obsolete and RoHS non-compliant, while 4-1571999-1 is an active product with ROHS3 compliance. Both deliver equivalent electrical performance and mechanical interface.

Q: Are there packaging differences between the ADPA02 and 4-1571999-1?

A: The ADPA02 is supplied with unspecified packaging, while 4-1571999-1 is packaged in tubes. This difference affects logistics and handling but does not impact component functionality or board-level performance.

Q: Does the substitute part meet the same electrical specifications?

A: Both parts are configured as SPST 2-position switches with identical circuit topology. Contact material and finish specifications are provided for the ADPA02 (copper alloy, gold-plated) but not detailed for the substitute. Both are classified as MSL 1 (Unlimited) for moisture sensitivity.

Q: Is the 4-1571999-1 suitable for applications requiring RoHS compliance?

A: Yes. The 4-1571999-1 is ROHS3 compliant, meeting RoHS Directive 2011/65/EU requirements. The ADPA02 is RoHS non-compliant and should not be used in applications subject to RoHS regulations.

Q: What is the mechanical life expectancy of the substitute part?

A: The ADPA02 specifies 1,000 mechanical cycles. Equivalent specifications for the 4-1571999-1 are not provided in the available data. Consult the manufacturer's detailed datasheet for complete mechanical life ratings of the substitute component.