ADF04T Equivalent & Substitute Parts

Part Overview

The ADF04T is a DIP switch manufactured by TE Connectivity ALCOSWITCH Switches, configured as a 4-position SPST (Single Pole Single Throw) through-hole component with slide actuator. This switch is rated for 25mA at 24VDC and features a flush, recessed actuator level with gold-plated copper alloy contacts. The ADF04T is classified as obsolete, making identification of equivalent and substitute parts necessary for ongoing design support and procurement continuity.

Substiute Parts

ADF04T

TE Connectivity ALCOSWITCH SwitchesIn Stock: 1051ADF04T Datasheet

Current PartRFQ

1825002-6

TE Connectivity ALCOSWITCH SwitchesIn Stock: 11031825002-6 Datasheet

DirectRFQ

209-4LPST

CTS ElectrocomponentsIn Stock: 5341209-4LPST Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the ADF04T are identified based on the following critical parameters that determine functional compatibility:

Primary Compatibility Criteria:

• Circuit configuration (SPST)
• Number of positions (4)
• Mounting type (Through Hole)
• Actuator type (Slide Standard)
• Actuator level (Flush, Recessed)
• Pitch spacing (0.100" / 2.54mm)
• Termination style (PC Pin)
• Washable capability

Electrical Performance Criteria:

• Current rating must equal or exceed 25mA
• Voltage rating must equal or exceed 24VDC
• Operating temperature range must encompass or exceed -30°C ~ 85°C

The substitute parts listed below satisfy these core compatibility requirements while offering improvements in product status and regulatory compliance.

Parameter Comparison

Engineering Selection Recommendations

1825002-6 (TE Connectivity ALCOSWITCH Switches)

The 1825002-6 is an active product from the same manufacturer as the ADF04T, maintaining design continuity within the TE Connectivity ALCOSWITCH Switches product line. This part is ROHS3 compliant, addressing regulatory requirements that the obsolete ADF04T does not meet. The 1825002-6 shares the same series designation (ADF) and core mechanical specifications. Selection of this part is appropriate for applications requiring regulatory compliance and manufacturer continuity. Specific electrical ratings are not provided in available documentation; verification against application requirements is necessary.

209-4LPST (CTS Electrocomponents)

The 209-4LPST is an active product offering enhanced electrical performance characteristics. This part provides 100mA current rating, exceeding the ADF04T requirement of 25mA, and operates across an extended temperature range of -40°C ~ 85°C compared to the ADF04T range of -30°C ~ 85°C. The 209-4LPST demonstrates 2,000 electrical life cycles versus 1,000 cycles for the ADF04T. This part is ROHS3 compliant and carries REACH Unaffected status. The voltage rating of 20VDC is lower than the ADF04T specification of 24VDC; application voltage requirements must be evaluated before selection. The 209-4LPST is suitable for applications where enhanced current capacity and extended temperature operation provide system benefits.

Frequently Asked Questions (FAQ)

Q: Can the 1825002-6 directly replace the ADF04T in existing designs?

A: The 1825002-6 shares the same mechanical form factor, mounting type, pitch spacing, and actuator configuration as the ADF04T. Both parts are manufactured by TE Connectivity ALCOSWITCH Switches and belong to the same ADF series. Mechanical compatibility is established. Electrical compatibility depends on application requirements, as specific current and voltage ratings for the 1825002-6 are not provided in available documentation.

Q: What is the primary difference between the 1825002-6 and 209-4LPST?

A: The 1825002-6 maintains manufacturer continuity with the ADF04T (TE Connectivity ALCOSWITCH Switches), while the 209-4LPST is manufactured by CTS Electrocomponents. The 209-4LPST provides higher current capacity (100mA versus 25mA) and extended temperature range (-40°C ~ 85°C versus -30°C ~ 85°C). The 209-4LPST voltage rating of 20VDC is lower than the ADF04T specification of 24VDC.

Q: Is the ADF04T voltage rating of 24VDC compatible with the 209-4LPST rated at 20VDC?

A: The 209-4LPST is rated for 20VDC maximum. Applications requiring 24VDC operation must not use the 209-4LPST, as this exceeds the component's voltage specification. The 1825002-6 is the appropriate selection for 24VDC applications when manufacturer continuity is required.

Q: Are both substitute parts RoHS compliant?

A: Yes. Both the 1825002-6 and 209-4LPST are ROHS3 compliant. The original ADF04T is RoHS non-compliant. Selection of either substitute part addresses RoHS regulatory requirements.

Q: What packaging options are available for the substitute parts?

A: The 1825002-6 is supplied in Bulk packaging. The 209-4LPST is supplied in Tube packaging. Packaging selection may affect procurement processes and inventory management requirements.

Q: Do both substitute parts support washable assembly processes?

A: Yes. Both the 1825002-6 and 209-4LPST are washable, maintaining compatibility with cleaning and assembly processes used for the ADF04T.

Q: What is the mechanical life specification for the substitute parts?

A: Mechanical life specification is not provided for the 1825002-6. The 209-4LPST does not specify mechanical life. The original ADF04T specifies 1,000 mechanical cycles. Electrical life for the 209-4LPST is specified at 2,000 cycles, exceeding the ADF04T specification of 1,000 cycles.