DS09 DIP Switch SPST 9 Position Equivalent & Substitute Parts

Part Overview

The DS09 is a 9-position DIP switch manufactured by APEM Inc., configured as a single-pole single-throw (SPST) switch with a slide actuator. This component is rated for 50mA at 24VDC and features through-hole mounting with PC pin termination. The DS09 is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing system support, maintenance, and new production applications where original stock is unavailable.

Substiute Parts

DS09

APEM Inc.In Stock: 975DS09 Datasheet

Current PartRFQ

208-9

CTS ElectrocomponentsIn Stock: 2099208-9 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

The CTS Electrocomponents 208-9 qualifies as a functional equivalent to the DS09 based on the following critical parameters:

• Circuit Configuration: Both parts are SPST switches
• Position Count: Both feature 9 positions
• Current Rating: Both rated at 50mA
• Voltage Rating: Both rated at 24VDC
• Actuator Type: Both use slide (standard) actuators
• Mounting Method: Both are through-hole mounted
• Termination: Both use PC pin termination
• Pitch: Both maintain 0.100" (2.54mm) pitch spacing
• Regulatory Compliance: Both are ROHS3 compliant and REACH unaffected

These parameters define the functional and mechanical compatibility envelope for DIP switch substitution in this category.

Parameter Comparison

Engineering Selection Recommendations

The CTS Electrocomponents 208-9 is a direct functional substitute for the obsolete DS09. Both parts meet identical electrical specifications (50mA, 24VDC, SPST, 9-position) and share mechanical compatibility through matching pitch, mounting type, and termination style. Both components maintain current regulatory compliance with ROHS3 certification and REACH unaffected status.

The 208-9 is currently in active production status with 1,998 pieces available in inventory, providing supply continuity for applications previously using the DS09. The extended operating temperature range of the 208-9 (-55°C to 85°C versus -20°C to 70°C for the DS09) offers broader environmental capability without compromising performance in the original DS09 operating envelope.

Frequently Asked Questions (FAQ)

Q: Can the CTS 208-9 be used as a direct replacement for the APEM DS09 in existing designs?

A: Yes. Both parts share identical electrical ratings (50mA, 24VDC, SPST configuration), mechanical pitch (0.100"), mounting method (through-hole), and termination style (PC pin). The 9-position count and slide actuator type are identical. PCB layout and schematic compatibility are maintained.

Q: What are the key differences between the DS09 and 208-9?

A: The primary differences are physical height above board (DS09: 0.271", 208-9: 0.334"), body material composition, contact finish (DS09: gold, 208-9: tin), and operating temperature range (DS09: -20°C to 70°C, 208-9: -55°C to 85°C). Electrical performance and functional behavior are equivalent.

Q: Are both parts RoHS compliant?

A: Yes. Both the DS09 and 208-9 are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic component manufacturing and distribution.

Q: What is the packaging format for the 208-9?

A: The CTS 208-9 is supplied in tube packaging, whereas the DS09 packaging format is not specified in available documentation.

Q: Do both parts have the same electrical life rating?

A: Yes. Both the DS09 and 208-9 are rated for 2,000 electrical cycles, providing equivalent operational durability in switching applications.