DS03 DIP Switch SPST 24V Equivalent & Substitute Parts

Part Overview

The DS03 is a single-pole single-throw (SPST) DIP switch manufactured by APEM Inc., designed for 24VDC applications with a 50mA current rating. This component features a slide actuator, through-hole mounting, and gold-plated phosphor bronze contacts. The DS03 is classified as obsolete, making equivalent substitute parts necessary for ongoing production and maintenance applications.

Substiute Parts

DS03

APEM Inc.In Stock: 1746DS03 Datasheet

Current PartRFQ

208-3

CTS ElectrocomponentsIn Stock: 1359208-3 Datasheet

SimilarRFQ

KAS1103E

E-SwitchIn Stock: 832KAS1103E Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the DS03 are qualified based on the following critical parameters:

• Circuit Configuration: SPST topology required
• Number of Positions: 3-position switch
• Voltage Rating: 24VDC minimum
• Actuator Type: Slide (Standard) actuator
• Mounting Type: Through Hole
• Pitch: 0.100" (2.54mm)
• Termination Style: PC Pin
• RoHS Compliance: ROHS3 Compliant

The identified substitute parts meet these core electrical and mechanical requirements. Current rating variations are acceptable within the specified voltage and circuit parameters, provided the application does not exceed the substitute part's current limit.

Parameter Comparison

Engineering Selection Recommendations

208-3 (CTS Electrocomponents): This substitute maintains full electrical equivalence with the DS03, matching the 50mA current rating and 24VDC voltage specification. The 208-3 is in active production status, ensuring long-term availability. Operating temperature range extends to -55°C ~ 85°C, providing broader environmental tolerance than the original DS03. RoHS3 compliance and REACH unaffected status align with regulatory requirements.

KAS1103E (E-Switch): This substitute meets core circuit and mechanical requirements with a reduced current rating of 25mA. The KAS1103E is suitable for applications where the 50mA current capacity of the DS03 exceeds actual circuit requirements. Active product status ensures supply continuity. Operating temperature range of -40°C ~ 85°C and mechanical life of 2,000 cycles match the DS03 specification. RoHS3 compliance and REACH unaffected status are maintained.

Selection between 208-3 and KAS1103E depends on application current requirements. For circuits requiring the full 50mA capacity, the 208-3 is the direct equivalent. For lower-current applications, the KAS1103E provides a qualified alternative.

Frequently Asked Questions (FAQ)

Q: Can the KAS1103E replace the DS03 in all applications?

A: The KAS1103E is electrically compatible with the DS03 for circuits drawing 25mA or less. Applications requiring the full 50mA current capacity must use the 208-3 substitute.

Q: What are the physical differences between these parts?

A: Height above board and length vary slightly among the three parts. The DS03 measures 0.271" height and 0.360" length. The 208-3 measures 0.334" height and 0.386" length. The KAS1103E measures 0.275" height and 0.354" length. PCB layout and clearance requirements should be verified for each substitute.

Q: Are all three parts RoHS3 compliant?

A: Yes, the DS03, 208-3, and KAS1103E are all ROHS3 compliant and REACH unaffected, meeting current regulatory standards.

Q: What is the difference in operating temperature range?

A: The DS03 operates from -20°C to 70°C. The 208-3 extends this to -55°C to 85°C. The KAS1103E operates from -40°C to 85°C. Select based on application environmental requirements.

Q: Are mechanical life specifications equivalent?

A: The DS03 specifies 5,000 mechanical cycles. The 208-3 does not specify mechanical life. The KAS1103E specifies 2,000 mechanical cycles. All three parts specify 2,000 electrical life cycles.

Q: What packaging is available for these substitutes?

A: The DS03 is supplied in standard packaging. The 208-3 and KAS1103E are supplied in tube packaging, suitable for automated assembly processes.