SCN-2206SC Equivalent & Substitute Parts

Part Overview

The SCN-2206SC is a snap action switch manufactured by Honeywell Sensing and Productivity Solutions, classified as SPDT (Single Pole Double Throw) with On-Momentary function. This chassis-mounted switch is rated for 10A AC at 125V and 500mA DC at 125V, featuring a straight lever actuator with screw terminal connections. The product is currently obsolete, necessitating identification of functionally equivalent alternatives for ongoing applications and new designs requiring similar switching characteristics.

Substiute Parts

SCN-2206SC

Honeywell Sensing and Productivity SolutionsIn Stock: 822SCN-2206SC Datasheet

Current PartRFQ

Z-15GM-B

Omron Automation and SafetyIn Stock: 1080Z-15GM-B Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the SCN-2206SC is determined by the following critical parameters that must be maintained or exceeded:

Circuit and Function Requirements:

• SPDT configuration (mandatory)
• On-Momentary switching function (mandatory)

Electrical Performance:

• AC current rating must equal or exceed 10A at 125V
• DC voltage rating must support 125V operation
• AC voltage rating must equal or exceed 125V

Mechanical Compatibility:

• Straight lever actuator (mandatory for form factor compatibility)
• Chassis mount configuration (mandatory for installation compatibility)
• Screw terminal termination (mandatory for connection compatibility)

Environmental and Lifecycle:

• Operating temperature range must encompass or exceed -55°C to 85°C, or be acceptable for the specific application
• Mechanical life rating should support the intended duty cycle

The substitute part Z-15GM-B from Omron Automation and Safety meets the core functional requirements of SPDT configuration, On-Momentary function, straight lever actuator, chassis mount, and screw terminal termination. However, specific parameter differences exist that must be evaluated for application suitability.

Parameter Comparison

Engineering Selection Recommendations

Substitution Feasibility:

The Z-15GM-B is functionally substitutable for the SCN-2206SC in applications where the following conditions are met:

1. DC Voltage Applications: If the application operates at DC voltages exceeding 30V, the Z-15GM-B is not suitable. The SCN-2206SC supports 125V DC operation, while Z-15GM-B is limited to 30V DC. For AC-only applications or DC applications at 30V or below, this parameter difference is not limiting.

2. Temperature Range: If the application requires operation below -25°C or above 80°C, the Z-15GM-B does not meet the environmental specification. The SCN-2206SC operates from -55°C to 85°C. Applications within the Z-15GM-B range (-25°C to 80°C) are compatible.

3. Mechanical Cycle Life: If the application requires mechanical life exceeding 10,000,000 cycles, the Z-15GM-B specification (10,000,000 cycles) may be marginal. The SCN-2206SC is rated for 20,000,000 cycles. For applications with cycle life requirements at or below 10,000,000 cycles, this difference is not limiting.

4. AC Current Capacity: The Z-15GM-B AC rating of 15A at 125V exceeds the SCN-2206SC requirement of 10A at 125V, providing additional margin.

5. Product Availability: The Z-15GM-B is actively manufactured and in stock, whereas the SCN-2206SC is obsolete. For new designs or ongoing production requiring component replenishment, the Z-15GM-B provides supply continuity.

Compliance: Both parts are RoHS compliant. The Z-15GM-B carries ROHS3 compliance and REACH Affected status, meeting current regulatory requirements.

Frequently Asked Questions (FAQ)

Q: Can the Z-15GM-B directly replace the SCN-2206SC in all applications?

A: No. Direct substitution is conditional. The Z-15GM-B is suitable only for applications that do not require DC operation above 30V, do not operate below -25°C or above 80°C, and do not require mechanical life exceeding 10,000,000 cycles. Verify your application's electrical and environmental specifications against the parameter comparison table before substitution.

Q: What is the primary limitation of the Z-15GM-B as a substitute?

A: The DC voltage rating is the most significant limitation. The Z-15GM-B is rated for 30V DC maximum, while the SCN-2206SC supports 125V DC. If your application uses DC voltages above 30V, the Z-15GM-B is not suitable.

Q: Are the physical dimensions compatible between these two switches?

A: The operating position and overtravel dimensions are functionally equivalent (19.1mm vs. 19.0mm operating position; both 5.6mm overtravel). The differential travel differs (1.9mm vs. 0.9mm), but this does not prevent mechanical installation. Both switches use identical mounting type (chassis mount) and termination style (screw terminal).

Q: Why does the Z-15GM-B have a lower mechanical life rating?

A: The Z-15GM-B is rated for 10,000,000 cycles versus the SCN-2206SC's 20,000,000 cycles. This reflects different design specifications between manufacturers. For applications with cycle life requirements at or below 10,000,000 cycles, this difference is not limiting.

Q: Is the Z-15GM-B suitable for low-temperature applications?

A: The Z-15GM-B operating range is -25°C to 80°C. If your application requires operation below -25°C, the Z-15GM-B does not meet the specification. The SCN-2206SC operates from -55°C to 85°C and is suitable for extended low-temperature environments.

Q: What is the significance of the different differential travel values?

A: Differential travel (1.9mm for SCN-2206SC vs. 0.9mm for Z-15GM-B) affects the hysteresis between switch actuation and release. The Z-15GM-B's tighter differential travel may result in more precise switching behavior. This difference does not prevent substitution but may affect application performance in sensitive control circuits.

Q: Are both switches RoHS compliant?

A: Yes. The SCN-2206SC is RoHS Compliant, and the Z-15GM-B is ROHS3 Compliant. Both meet RoHS requirements. The Z-15GM-B additionally carries REACH Affected status, indicating compliance with current EU chemical regulations.

Q: What is the AC current capacity difference, and does it matter?

A: The SCN-2206SC is rated for 10A AC at 125V, while the Z-15GM-B is rated for 15A AC at 125V. The Z-15GM-B provides 50% additional current capacity, offering design margin. If your application requires 10A AC or less, both switches are suitable.