ADPA04S DIP Switch SPST 4 Position Surface Mount Equivalent & Substitute Parts

Part Overview

The ADPA04S is a Surface Mount DIP Switch manufactured by TE Connectivity ALCOSWITCH Switches. This component is a Single Pole Single Throw (SPST) switch with 4 positions, piano actuator, and a rated capacity of 25mA at 24VDC. The ADPA04S is classified as an obsolete product. Due to its obsolete status, identifying equivalent and substitute parts is necessary to maintain design continuity and ensure component availability for ongoing production, maintenance, and repair applications.

Substiute Parts

ADPA04S

TE Connectivity ALCOSWITCH SwitchesIn Stock: 790ADPA04S Datasheet

Current PartRFQ

4-1571999-5

TE Connectivity ALCOSWITCH SwitchesIn Stock: 11394-1571999-5 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The substitute part 4-1571999-5 is functionally equivalent to the ADPA04S based on the following critical parameters that determine substitution compatibility:

Electrical Parameters:

• Circuit Configuration: Both parts are SPST (Single Pole Single Throw)
• Number of Positions: Both parts have 4 positions
• Voltage Rating: Both parts operate at 24VDC
• Current Rating: Both parts are rated for 25mA

Mechanical Parameters:

• Actuator Type: Both parts feature piano actuators with raised actuator levels
• Mounting Type: Both parts are surface mount configurations
• Contact Material: Both parts use copper alloy contacts with gold finish
• Operating Temperature Range: Both parts operate within -30°C to 85°C
• Washable: Both parts are washable

Environmental & Compliance Parameters:

• Moisture Sensitivity Level (MSL): Both parts are MSL 1 (Unlimited)
• REACH Status: Both parts are REACH Unaffected
• ECCN Classification: Both parts are classified as EAR99

The primary distinction between these parts is the product status: the ADPA04S is obsolete, while 4-1571999-5 is an active product with current manufacturing support.

Parameter Comparison

Engineering Selection Recommendations

For New Designs and Active Production:

The part 4-1571999-5 is the recommended substitute for the obsolete ADPA04S. This part maintains electrical and mechanical equivalence across all critical parameters while offering the advantage of active product status with current manufacturing support. Additionally, 4-1571999-5 carries ROHS3 compliance, which aligns with current environmental and regulatory standards for electronic components.

For Legacy System Maintenance:

If the ADPA04S must be retained in legacy systems due to design constraints or certification requirements, the original part number should be sourced from authorized distributors. However, 4-1571999-5 remains functionally compatible for applications where regulatory compliance updates are acceptable.

Compliance Considerations:

The transition from the RoHS non-compliant ADPA04S to the ROHS3-compliant 4-1571999-5 represents an improvement in environmental compliance. Organizations implementing new designs or updating existing products should prioritize 4-1571999-5 to meet current regulatory requirements.

Frequently Asked Questions (FAQ)

Q: Can 4-1571999-5 be used as a direct replacement for ADPA04S in existing designs?

A: Yes. Both parts share identical circuit configuration (SPST), position count (4), actuator type (piano), and mounting classification (surface mount). Electrical ratings for current (25mA) and voltage (24VDC) are equivalent. The parts are functionally interchangeable from an electrical and mechanical standpoint.

Q: What is the primary difference between ADPA04S and 4-1571999-5?

A: The ADPA04S is classified as obsolete with RoHS non-compliance, while 4-1571999-5 is an active product with ROHS3 compliance. Both parts maintain the same functional specifications and belong to the ADPA series from TE Connectivity ALCOSWITCH Switches.

Q: Are there packaging differences between these parts?

A: The ADPA04S packaging specification is not provided in the available data. The 4-1571999-5 is supplied in tube packaging. Packaging differences do not affect electrical or mechanical compatibility.

Q: What are the key parameters that determine substitution eligibility?

A: Substitution eligibility is determined by: circuit configuration (SPST), number of positions (4), actuator type (piano), mounting type (surface mount), current rating (25mA), voltage rating (24VDC), operating temperature range (-30°C to 85°C), and environmental classifications (MSL 1, REACH Unaffected, EAR99).

Q: Is 4-1571999-5 suitable for applications requiring RoHS compliance?

A: Yes. The 4-1571999-5 carries ROHS3 compliance, making it suitable for applications and markets requiring RoHS-compliant components. The ADPA04S is RoHS non-compliant and should not be used in applications with RoHS requirements.

Q: Are both parts washable?

A: Yes. Both the ADPA04S and 4-1571999-5 are washable components, supporting cleaning processes in manufacturing environments.

Q: What is the moisture sensitivity level for these parts?

A: Both parts are classified as MSL 1 (Unlimited), indicating no moisture sensitivity restrictions for storage, handling, or use.