Switch Selection Guide Summary

Overview

This document provides a detailed guide for selecting switches based on their electrical ratings and physical configurations. It categorizes switches by their power ratings, voltage specifications, and package types.

Electrical Specifications

• Power Ratings: Switches are rated from 0.1A up to 5A, with voltage ratings ranging from 5V DC to 250V AC/DC.
• Voltage Ratings: Common voltage ratings include 12V DC, 24V DC, 28V AC/DC, 30V AC/DC, 125/250V AC, and 5V for photo interrupters.

Switch Types and Packages

• Subminiature Switches: Examples include HB2 (0.4VA @ 28V AC/DC), HB (0.1A @ 30V AC/DC), and DSB (5V Photo Interrupter).
• Miniature Switches: Includes KB, UB, UB2, YB, KP, DSA, and others with ratings from 0.4VA to 5A at various voltages.
• Standard Switches: LB and FP01 series, with ratings up to 5A and photo interrupter options.
• Ultra-miniature Switches: G3B, G3T, SS3, HP03, DIP Slide JS, CB3, ND3, FR02, with ratings from 0.4VA to 3VA and current ratings from 25mA to 0.1A at voltages up to 50V DC.

Special Features

• Photo Interrupters: Available in standard FP01 and submini DSB series, operating at 5V.
• Connection Options: FP01 series includes plug options for connection.
• Button and Slide Switches: Various configurations including button and slide types are available.
• Mounting Styles: Gull wing and DIP slide packages are mentioned for ultra-miniature switches.

Key Parameters and Limitations

• Maximum current ratings vary by switch type, from 25mA in ultra-miniature DIP slide switches to 5A in miniature UB series.
• Voltage ratings are critical for ensuring compatibility with the application, ranging from low voltage DC (5V) to higher voltage AC (up to 250V).
• Power ratings (VA) indicate the maximum load the switch can handle safely.

Recommendations

• Select switches based on the required current and voltage ratings to ensure reliability and safety.
• Consider the physical package and mounting style for compatibility with the device design.
• Use photo interrupters for applications requiring optical sensing at low voltage.