CTS Electrocomponents 210-3MSTFD DIP Switch Equivalent & Substitute Parts

Part Overview

The CTS Electrocomponents 210-3MSTFD is an active-status SPST DIP switch designed for through-hole mounting applications requiring low-current switching at 20VDC. This 3-position slide-actuated switch operates at 100mA with a raised actuator profile and gold-plated beryllium copper contacts. The component is ROHS3 compliant and rated for 1,000 electrical cycles. Equivalent parts are identified when manufacturers discontinue production lines, inventory becomes constrained, or design flexibility permits voltage or performance parameter variations within acceptable operating ranges.

Substiute Parts

210-3MSTFD

CTS ElectrocomponentsIn Stock: 1086210-3MSTFD Datasheet

Current PartRFQ

SD03H0B

C&KIn Stock: 1031SD03H0B Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

The C&K SD03H0B qualifies as an equivalent substitute based on the following matching parameters: identical SPST circuit configuration, 3-position count, 100mA current rating, through-hole mounting, 0.100" pitch, beryllium copper contacts with gold finish, -40°C to 85°C operating temperature range, MSL 1 rating, and ROHS3 compliance. The substitute part exceeds the voltage specification (25VDC versus 20VDC), which represents an upward-compatible parameter. Mechanical life (2,000 cycles) and electrical life (2,000 cycles) both exceed the main part specification of 1,000 electrical cycles. The actuator profile differs (flush/recessed versus raised), and the body material differs (polyphthalamide versus unspecified), representing acceptable mechanical variations for equivalent functionality in standard DIP switch applications.

Parameter Comparison

Engineering Selection Recommendations

Both the CTS 210-3MSTFD and C&K SD03H0B maintain active product status and ROHS3 compliance. The SD03H0B substitute part carries higher voltage and cycle ratings, making it suitable for applications where the original part specification is met or exceeded. The primary design consideration is the actuator profile difference: the substitute features a flush/recessed actuator versus the raised profile of the main part. This affects PCB layout clearance and operator accessibility. The height difference of 0.31mm is within typical PCB tolerance ranges for standard through-hole applications. Both parts carry identical MSL 1 ratings and REACH unaffected status, confirming equivalent environmental compliance for storage and handling.

Frequently Asked Questions (FAQ)

Q: Can the C&K SD03H0B directly replace the CTS 210-3MSTFD in existing designs?

A: Yes, provided PCB layout accommodates the 0.31mm height reduction and flush actuator profile. The electrical specifications (SPST, 3-position, 100mA, 20VDC minimum) are fully compatible. Verify mechanical clearance around the switch location before production implementation.

Q: What is the significance of the voltage rating difference (20VDC vs. 25VDC)?

A: The substitute part is rated for higher voltage operation. This represents an upward-compatible specification and does not restrict use in 20VDC applications. The substitute will operate safely at or below its rated voltage.

Q: Are the cycle life differences important for my application?

A: The substitute part (2,000 electrical cycles) exceeds the main part specification (1,000 electrical cycles). If your application requires fewer than 1,000 cycles, both parts are acceptable. If your application approaches or exceeds 1,000 cycles, the substitute provides additional margin.

Q: Does the actuator profile change affect functionality?

A: The actuator type remains slide-actuated in both parts. The profile difference (raised versus flush/recessed) affects physical accessibility and PCB clearance, not electrical switching function. Verify that your enclosure or panel design accommodates the flush profile of the substitute.

Q: Are both parts available in the same packaging?

A: Yes, both parts are supplied in tube packaging, maintaining consistent handling and storage procedures.

Q: What compliance certifications apply to both parts?

A: Both parts are ROHS3 compliant, REACH unaffected, and carry MSL 1 (unlimited moisture sensitivity) ratings. Both are classified under ECCN EAR99 and HTSUS 8536.50.9065.