DS09T DIP Switch SPST 9 Position Equivalent & Substitute Parts

Part Overview

The DS09T is a 9-position DIP switch manufactured by APEM Inc., configured as a single-pole single-throw (SPST) switch with a slide actuator rated for 50mA at 24VDC. This component is classified as obsolete, making equivalent substitute parts necessary for ongoing design support and procurement continuity. The DS09T features through-hole mounting with PC pin termination, phosphor bronze contacts with gold finish, and is sealed with epoxy terminals for environmental protection.

Substiute Parts

DS09T

APEM Inc.In Stock: 785DS09T Datasheet

Current PartRFQ

206-9ST

CTS ElectrocomponentsIn Stock: 876206-9ST Datasheet

SimilarRFQ

KAS1109E

E-SwitchIn Stock: 1039KAS1109E Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the DS09T is determined by the following critical parameters:

• Circuit Configuration: Must be SPST
• Number of Positions: Must be 9
• Current Rating: Must support minimum 50mA
• Voltage Rating: Must support 24VDC
• Actuator Type: Must be Slide (Standard)
• Mounting Type: Must be Through Hole
• Termination Style: Must be PC Pin
• Pitch: Must be 0.100" (2.54mm)

The substitute parts identified below meet these core electrical and mechanical requirements, enabling direct functional replacement in applications designed for the DS09T.

Parameter Comparison

Engineering Selection Recommendations

206-9ST (CTS Electrocomponents): This substitute provides full electrical and mechanical compatibility with the DS09T. Both parts share identical current rating (50mA), voltage rating (24VDC), and mechanical specifications. The 206-9ST offers extended electrical life (10,000 cycles versus 2,000 cycles) and a wider operating temperature range (-55°C ~ 85°C). The part is currently in active production status with ROHS3 compliance and REACH unaffected certification, making it suitable for new designs and long-term procurement.

KAS1109E (E-Switch): This substitute meets the core mechanical and circuit requirements but operates at a reduced current rating of 25mA compared to the DS09T's 50mA specification. The KAS1109E is appropriate only for applications where the actual circuit current does not exceed 25mA. This part is in active production with ROHS3 compliance and REACH unaffected certification. The operating temperature range (-40°C ~ 85°C) exceeds the original DS09T specification.

Frequently Asked Questions (FAQ)

Q: Can the 206-9ST directly replace the DS09T without PCB modifications?

A: The 206-9ST maintains identical pitch (0.100"), termination style (PC Pin), and mounting type (Through Hole). However, the height above board differs: 206-9ST is 0.334" (8.48mm) versus DS09T at 0.271" (6.88mm). Verify clearance in your specific PCB assembly before implementation.

Q: Is the KAS1109E suitable for all DS09T applications?

A: The KAS1109E is suitable only for applications where circuit current does not exceed 25mA. The DS09T is rated for 50mA. If your application requires the full 50mA capability, use the 206-9ST instead.

Q: What are the key differences between the two substitute options?

A: The primary difference is current rating: 206-9ST supports 50mA (matching DS09T), while KAS1109E supports only 25mA. The 206-9ST also offers superior electrical life (10,000 cycles) and a wider temperature range. Both are ROHS3 compliant and in active production.

Q: Are both substitutes available in the same packaging as the DS09T?

A: The 206-9ST is supplied in Tube packaging. The KAS1109E packaging specification is not provided in the available data. Confirm packaging requirements with your procurement department before ordering.

Q: Do the substitute parts maintain the same contact material and finish?

A: The DS09T uses phosphor bronze contacts with gold finish. The 206-9ST contact material is not specified but maintains gold finish. The KAS1109E uses phosphor bronze with gold finish, matching the original specification.