DS04T DIP Switch Equivalent & Substitute Parts

Part Overview

The DS04T is a 4-position DIP switch manufactured by APEM Inc., designed for through-hole mounting applications requiring SPST (Single Pole Single Throw) switching at 24VDC with a 50mA current rating. This component features a slide actuator with gold-plated phosphor bronze contacts and is sealed with epoxy terminals for environmental protection.

The DS04T is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production or maintenance requirements for systems utilizing this component.

Key Parameters

Parameter	DS04T (APEM Inc.)
Circuit Configuration	SPST
Number of Positions	4
Current Rating	50mA
Voltage Rating	24VDC
Actuator Type	Slide (Standard)
Mounting Type	Through Hole
Pitch	0.100" (2.54mm)
Contact Material	Phosphor Bronze
Contact Finish	Gold
Termination Style	PC Pin
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the DS04T is determined by the following critical parameters:

Circuit Configuration: Must be SPST
Number of Positions: Must be 4
Voltage Rating: Must be 24VDC
Mounting Type: Must be Through Hole
Pitch: Must be 0.100" (2.54mm)
Termination Style: Must be PC Pin
Actuator Type: Must be Slide (Standard)

The substitute parts identified below meet these core electrical and mechanical requirements. Current rating tolerance and physical dimensions (height, length) may vary within acceptable limits for PCB layout and circuit operation. Contact material and finish specifications may differ while maintaining electrical performance at the specified voltage and current levels.

Parameter Comparison

Parameter	DS04T (APEM Inc.)	206-4ST (CTS Electrocomponents)	KAS1104E (E-Switch)
Circuit Configuration	SPST	SPST	SPST
Number of Positions	4	4	4
Current Rating	50mA	50mA	25mA
Voltage Rating	24VDC	24VDC	24VDC
Actuator Type	Slide (Standard)	Slide (Standard)	Slide (Standard)
Actuator Level	Raised	Raised	Raised
Mounting Type	Through Hole	Through Hole	Through Hole
Termination Style	PC Pin	PC Pin	PC Pin
Pitch	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)
Contact Finish	Gold	Gold	Gold
Height Above Board	0.271" (6.88mm)	0.334" (8.48mm)	0.275" (6.99mm)
Length	0.460" (11.68mm)	0.486" (12.34mm)	0.454" (11.52mm)
Operating Temperature Range	-20°C ~ 70°C	-55°C ~ 85°C	-40°C ~ 85°C
Electrical Life	2,000 Cycles	10,000 Cycles	2,000 Cycles
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Obsolete	Active	Active

Engineering Selection Recommendations

206-4ST (CTS Electrocomponents): This substitute maintains full electrical equivalence with the DS04T, matching the 50mA current rating and 24VDC voltage specification. The 206-4ST is classified as Active, ensuring ongoing availability and supply chain support. It exceeds the original component's electrical life rating (10,000 cycles versus 2,000 cycles) and operates across a wider temperature range (-55°C ~ 85°C). Physical dimensions differ slightly; PCB layout verification is required to confirm clearance compatibility. RoHS3 compliance is maintained.

KAS1104E (E-Switch): This substitute meets all core switching requirements and is classified as Active. The KAS1104E operates at a reduced current rating of 25mA, which is suitable only for applications where the circuit current demand does not exceed this threshold. The component maintains the same voltage rating, pitch, and termination style as the DS04T. Operating temperature range is -40°C ~ 85°C. RoHS3 compliance is maintained. Physical dimensions are comparable to the original component.

Selection between these substitutes depends on circuit current requirements and thermal operating conditions. The 206-4ST is the preferred substitute for applications requiring the full 50mA current capacity. The KAS1104E is suitable for lower-current applications where the 25mA rating is sufficient.

Frequently Asked Questions (FAQ)

Q: Can the KAS1104E be used in place of the DS04T in all applications?

A: The KAS1104E is suitable only for applications where the circuit current does not exceed 25mA. The DS04T is rated for 50mA; if your application requires the full 50mA capacity, the KAS1104E is not appropriate. The 206-4ST is the recommended substitute for full current compatibility.

Q: What are the physical dimension differences between these parts?

A: The DS04T has a height of 0.271" (6.88mm) and length of 0.460" (11.68mm). The 206-4ST measures 0.334" (8.48mm) in height and 0.486" (12.34mm) in length. The KAS1104E measures 0.275" (6.99mm) in height and 0.454" (11.52mm) in length. PCB layout and clearance requirements must be verified before substitution.

Q: Are all three parts RoHS3 compliant?

A: Yes, the DS04T, 206-4ST, and KAS1104E are all ROHS3 compliant and REACH unaffected.

Q: What is the difference in electrical life between these components?

A: The DS04T and KAS1104E are rated for 2,000 electrical cycles. The 206-4ST is rated for 10,000 electrical cycles, providing extended operational life in high-cycle applications.

Q: Which substitute offers the widest operating temperature range?

A: The 206-4ST operates from -55°C to 85°C, providing the widest temperature range. The DS04T operates from -20°C to 70°C, and the KAS1104E operates from -40°C to 85°C.

Q: Are these parts available in different packaging formats?

A: The DS04T is supplied in standard packaging. The 206-4ST and KAS1104E are supplied in tube packaging. Verify packaging requirements for your procurement and assembly processes.

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