ST26L2DWB Toggle Switch SP3T Equivalent & Substitute Parts

Part Overview

The ST26L2DWB is a panel-mount toggle switch manufactured by APEM Inc., configured as a single-pole triple-throw (SP3T) switch rated for 0.4VA at 20V AC/DC. This switch features a standard round actuator with wire wrap termination and is designed for applications requiring three discrete on-positions. The product is currently obsolete, making equivalent substitute parts necessary for ongoing maintenance, repair, and legacy system support.

Substiute Parts

ST26L2DWB

APEM Inc.In Stock: 1075ST26L2DWB Datasheet

Current PartRFQ

7211MHWBE

C&KIn Stock: 12097211MHWBE Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ST26L2DWB is determined by strict equivalence across the following critical parameters:

• Circuit topology: SP3T configuration with On-On-On switching function
• Electrical ratings: 0.4VA capacity at 20V AC/DC
• Mechanical interface: Panel mount with 6.35mm circular cutout and 1/4-40 bushing thread
• Termination: Wire wrap connection style
• Environmental performance: Operating temperature range of -30°C to 85°C and 40,000-cycle electrical life

The substitute part 7211MHWBE from C&K meets all these critical parameters. Differences in actuator length (5.08mm vs. 6.86mm) and actuator material plating (chrome vs. nickel) do not affect functional equivalence for standard panel-mount applications, as both maintain the same mechanical interface and electrical performance specifications.

Parameter Comparison

Engineering Selection Recommendations

The 7211MHWBE from C&K is a direct functional equivalent to the obsolete ST26L2DWB. Both parts are ROHS3 compliant and carry identical electrical and mechanical specifications for panel-mount SP3T switching applications. The C&K part offers the advantage of active product status, ensuring continued availability and supply chain reliability.

The 1.78mm difference in actuator length does not impact electrical performance or mechanical fit within standard panel cutout dimensions. Both parts maintain identical panel interface geometry (6.35mm circular cutout, 1/4-40 bushing thread) and wire wrap termination compatibility.

For applications where the original ST26L2DWB is no longer available, the 7211MHWBE provides equivalent electrical performance, environmental ratings, and mechanical interface compatibility.

Frequently Asked Questions (FAQ)

Q: Can the 7211MHWBE replace the ST26L2DWB in existing designs?

A: Yes. Both parts share identical electrical ratings (0.4VA at 20V AC/DC), circuit configuration (SP3T On-On-On), mechanical interface (6.35mm panel cutout, 1/4-40 bushing), and termination style (wire wrap). The actuator length difference does not affect functional compatibility in standard panel-mount applications.

Q: What is the significance of the actuator length difference?

A: The ST26L2DWB has a 6.86mm actuator length while the 7211MHWBE has a 5.08mm actuator length. This difference affects only the physical reach of the toggle lever and does not impact electrical performance, switching characteristics, or panel mounting compatibility. Selection depends on panel thickness and operator preference for toggle travel distance.

Q: Are there compliance differences between these parts?

A: Both parts are ROHS3 compliant with MSL rating of 1 (Unlimited) and carry the same ECCN (EAR99) and HTSUS classification. The C&K part is REACH Affected while the APEM part is REACH Unaffected; however, this does not affect functional equivalence for component selection purposes.

Q: What packaging is available for the substitute part?

A: The 7211MHWBE is supplied in Tray packaging, compared to the original part's standard packaging. Verify packaging requirements for your procurement and assembly processes.

Q: Are both parts rated for the same operating temperature range?

A: Yes. Both the ST26L2DWB and 7211MHWBE are rated for -30°C to 85°C operating temperature and support 40,000 electrical cycles, making them equivalent for environmental performance specifications.