ADPA08 DIP Switch SPST 8-Position Piano Actuator Equivalent & Substitute Parts

Part Overview

The ADPA08 is a through-hole DIP switch manufactured by TE Connectivity ALCOSWITCH Switches, configured as a single-pole single-throw (SPST) 8-position switch with piano actuator. This component is rated for 25mA at 24VDC and features gold-plated copper alloy contacts with a raised piano actuator mechanism. The ADPA08 is classified as obsolete, making identification of equivalent and substitute parts essential for ongoing design support, maintenance, and production continuity. Active alternatives with compatible electrical and mechanical specifications are available from TE Connectivity and other manufacturers.

Substiute Parts

ADPA08

TE Connectivity ALCOSWITCH SwitchesIn Stock: 772ADPA08 Datasheet

Current PartRFQ

5-1571999-6

TE Connectivity ALCOSWITCH SwitchesIn Stock: 8125-1571999-6 Datasheet

DirectRFQ

194-8MS

CTS ElectrocomponentsIn Stock: 1135194-8MS Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the ADPA08 are classified into two categories based on electrical and mechanical compatibility:

Direct Equivalent (5-1571999-6): This TE Connectivity part maintains identical circuit configuration (SPST), position count (8), actuator type (piano), mounting method (through hole), pitch (0.100"), and termination style (PC pin). The primary distinction is product status: 5-1571999-6 is active and RoHS3 compliant, whereas ADPA08 is obsolete and RoHS non-compliant. Current rating and voltage specifications are not explicitly stated for 5-1571999-6 but the part is listed within the same ADPA series, indicating functional equivalence for standard DIP switch applications.

Similar Substitute (194-8MS): This CTS Electrocomponents part shares the same circuit configuration (SPST), position count (8), actuator type (piano), mounting method (through hole, right angle), pitch (0.100"), and termination style (PC pin). The 194-8MS operates at 24VDC with a higher current rating of 50mA compared to the ADPA08's 25mA, and features an extended electrical life rating of 7,000 cycles. The 194-8MS is RoHS3 compliant and active in production.

Substitution eligibility is determined by matching: circuit type, number of positions, actuator mechanism, mounting configuration, pitch, and termination style. Current and voltage ratings must meet or exceed application requirements.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Preferred): The 5-1571999-6 is the primary substitute for ADPA08 applications. Both parts are manufactured by TE Connectivity within the ADPA series, ensuring design compatibility. The 5-1571999-6 is active in production with RoHS3 compliance, addressing the obsolescence and regulatory status of the original ADPA08. This part is suitable for new designs and legacy system updates where TE Connectivity components are specified.

For Alternative Sourcing: The 194-8MS from CTS Electrocomponents provides a functionally compatible alternative when TE Connectivity parts are unavailable or when higher current capacity is required. The 194-8MS supports 50mA operation compared to ADPA08's 25mA, and offers extended electrical life (7,000 cycles versus 1,000 cycles). The 194-8MS is RoHS3 compliant and actively manufactured. This part is appropriate for applications where current margin and cycle life are design considerations.

Compliance Considerations: Both substitute parts are RoHS3 compliant and REACH unaffected, meeting modern regulatory requirements. The ADPA08's RoHS non-compliant status may restrict its use in new designs subject to RoHS directives. Selection between 5-1571999-6 and 194-8MS should prioritize design continuity with TE Connectivity components unless application requirements specifically benefit from the CTS alternative's higher current rating or extended electrical life.

Frequently Asked Questions (FAQ)

Q: Can the 5-1571999-6 be used as a direct drop-in replacement for ADPA08?

A: Yes. The 5-1571999-6 maintains identical circuit configuration (SPST), position count (8), actuator type (piano), mounting method (through hole), pitch (0.100"), and termination style (PC pin) as the ADPA08. Both are TE Connectivity ALCOSWITCH products within the ADPA series. The 5-1571999-6 is the recommended direct equivalent for ADPA08 applications.

Q: What are the key differences between 5-1571999-6 and 194-8MS?

A: The 5-1571999-6 is manufactured by TE Connectivity and maintains the same product series as ADPA08, while 194-8MS is manufactured by CTS Electrocomponents. The 194-8MS supports higher current (50mA versus unspecified for 5-1571999-6) and offers extended electrical life (7,000 cycles versus unspecified for 5-1571999-6). The 194-8MS is not washable, whereas both ADPA08 and 5-1571999-6 are washable. Both parts share identical circuit configuration, position count, actuator type, mounting method, pitch, and termination style.

Q: Is the 194-8MS suitable for applications originally designed for ADPA08?

A: Yes, provided application requirements do not depend on the washable feature. The 194-8MS shares all critical mechanical and electrical parameters: SPST circuit, 8 positions, piano actuator, through-hole right-angle mounting, 0.100" pitch, PC pin termination, and 24VDC operation. The 194-8MS's higher current rating (50mA) and extended electrical life (7,000 cycles) exceed ADPA08 specifications, making it suitable for equivalent or more demanding applications.

Q: Why is ADPA08 listed as obsolete?

A: The ADPA08 is no longer in active production. TE Connectivity has transitioned to the 5-1571999-6 as the active equivalent within the ADPA series. The ADPA08's RoHS non-compliant status also limits its use in new designs subject to RoHS directives. Existing inventory of ADPA08 remains available, but new designs should specify 5-1571999-6 or equivalent active parts.

Q: What is the significance of RoHS3 compliance for substitute parts?

A: RoHS3 compliance indicates the part meets Restriction of Hazardous Substances Directive requirements, restricting the use of specific hazardous materials in electrical and electronic equipment. Both 5-1571999-6 and 194-8MS are RoHS3 compliant, whereas ADPA08 is RoHS non-compliant. For applications subject to RoHS regulations or customer requirements, substitute parts must be RoHS3 compliant. This is a mandatory consideration for new designs and regulated markets.

Q: Are there packaging differences between ADPA08 and its substitutes?

A: ADPA08 packaging is listed as unspecified in the provided data. The 5-1571999-6 is supplied in tube packaging, and 194-8MS is also supplied in tube packaging. Tube packaging is standard for DIP switches and supports automated assembly processes. Confirm packaging requirements with your procurement or assembly process specifications.

Q: What operating temperature range should be considered when selecting a substitute?

A: ADPA08 operates from -30°C to 85°C. The 5-1571999-6 operating temperature is not specified in the provided data. The 194-8MS operates from -40°C to 85°C, providing a wider low-temperature range. For applications requiring operation below -30°C, the 194-8MS is the appropriate choice. For standard industrial applications within -30°C to 85°C, both substitutes are suitable.

Q: How do electrical life ratings affect part selection?

A: ADPA08 has an electrical life of 1,000 cycles. The 194-8MS specifies 7,000 cycles, providing significantly extended operational life. The 5-1571999-6 electrical life is not specified. For applications with high switching frequency or extended service life requirements, the 194-8MS's higher electrical life rating provides additional design margin. For standard applications with moderate switching frequency, both substitutes are acceptable.