CTS 210-4LPSFD DIP Switch Equivalent & Substitute Parts

Part Overview

The CTS 210-4LPSFD is a 4-position DIP switch with SPST circuit configuration, rated for 100mA at 20VDC. This through-hole mounted component features a slide actuator with flush, recessed positioning and beryllium copper gold-plated contacts. The part is active in production and RoHS3 compliant, making it suitable for applications requiring reliable switching in industrial and commercial electronics.

Equivalent substitute parts may be required due to inventory availability, lead time considerations, or design flexibility across compatible voltage ratings and mechanical specifications.

Substiute Parts

210-4LPSFD

CTS ElectrocomponentsIn Stock: 1166210-4LPSFD Datasheet

Current PartRFQ

SD04H0B

C&KIn Stock: 1331SD04H0B Datasheet

SimilarRFQ

SD04H1B

C&KIn Stock: 1186SD04H1B Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CTS 210-4LPSFD is determined by the following critical parameters:

Core Compatibility Requirements:

• Circuit configuration: SPST (single pole, single throw)
• Number of positions: 4
• Current rating: 100mA minimum
• Mounting type: Through hole
• Pitch: 0.100" (2.54mm)
• Contact material: Beryllium copper with gold finish
• Operating temperature range: -40°C to 85°C minimum
• RoHS3 compliance

Allowable Variations:

• Voltage rating: 20VDC or higher (25VDC acceptable)
• Actuator level: Flush/recessed or raised configurations
• Washable feature: Present or absent
• Mechanical and electrical life cycles: Equal to or exceeding specified values

The C&K SD04H0B and SD04H1B meet all core compatibility requirements. Both parts maintain identical circuit configuration, position count, current rating, mounting specifications, and pitch. The voltage rating increase to 25VDC provides additional design margin. Mechanical and electrical life improvements (2,000 cycles versus unspecified for the main part) represent enhanced performance characteristics.

Parameter Comparison

Engineering Selection Recommendations

Both C&K substitute parts maintain full compatibility with the CTS 210-4LPSFD across all critical electrical and mechanical parameters. Selection between alternatives should be based on the following factors:

C&K SD04H0B (Flush, Recessed Actuator): This part provides the closest mechanical match to the original CTS component, with identical actuator level positioning. The flush, recessed configuration is suitable for applications requiring a low-profile switch interface. Voltage rating of 25VDC exceeds the original 20VDC specification, providing additional design margin. Electrical life rating of 2,000 cycles represents a 100% improvement over the original specification.

C&K SD04H1B (Raised Actuator): This variant features a raised actuator level, which may be preferred in applications requiring easier manual actuation or improved tactile feedback. All other electrical and mechanical specifications remain equivalent to the SD04H0B. The raised configuration represents the only functional difference between the two C&K options.

Both substitute parts are RoHS3 compliant and REACH unaffected, maintaining regulatory compliance with the original component. All three parts share identical pitch, mounting type, and termination style, ensuring direct PCB footprint compatibility without design modification.

Frequently Asked Questions (FAQ)

Q: Can the C&K SD04H0B or SD04H1B be used as direct replacements for the CTS 210-4LPSFD?

A: Yes. Both C&K parts meet all core compatibility requirements: SPST circuit configuration, 4-position count, 100mA current rating, through-hole mounting, 0.100" pitch, beryllium copper gold-plated contacts, and -40°C to 85°C operating temperature range. The 25VDC voltage rating exceeds the original 20VDC specification, providing additional design margin. No PCB modifications are required.

Q: What is the difference between the SD04H0B and SD04H1B?

A: The primary difference is actuator level. The SD04H0B features a flush, recessed actuator matching the original CTS part configuration. The SD04H1B features a raised actuator, which may provide improved tactile feedback or easier manual operation. All other electrical and mechanical specifications are identical between the two C&K parts.

Q: Are there any height or footprint differences that would affect PCB layout?

A: Height above board differs minimally: CTS 210-4LPSFD measures 0.180" (4.57mm), while both C&K parts measure 0.178" (4.52mm). This 0.002" difference is negligible for standard PCB assembly. Length and pitch specifications are identical across all three parts, ensuring direct footprint compatibility.

Q: Do the substitute parts have improved reliability characteristics?

A: The C&K SD04H0B and SD04H1B both specify 2,000 electrical life cycles, compared to 1,000 cycles for the CTS 210-4LPSFD. This represents a 100% improvement in rated cycle life. Both substitute parts also feature washable construction with tape seal, compared to epoxy sealed terminals on the original part.

Q: Are all three parts RoHS3 compliant?

A: Yes. The CTS 210-4LPSFD, C&K SD04H0B, and C&K SD04H1B are all RoHS3 compliant with REACH unaffected status. Moisture sensitivity level is 1 (unlimited) for all three parts, indicating no special handling requirements during storage or assembly.

Q: Which substitute part should be selected for new designs?

A: Selection depends on actuator preference. For applications requiring a low-profile interface matching the original CTS configuration, the C&K SD04H0B is recommended. For applications benefiting from a raised actuator for improved accessibility or tactile feedback, the C&K SD04H1B is recommended. Both parts provide equivalent electrical performance and regulatory compliance.