16-Position Hex Rotary Switch — 4-Bit Binary Output, Right Angle PCB Mount

16-Position Hex Rotary Switch — 4-Bit Binary Output, Right Angle PCB Mount

This Alcoswitch 16-position hexadecimal rotary switch provides a clean, reliable way to set a 4-bit binary value (0–F) in embedded systems — ideal for device address selection, DIP switch replacement, and operational mode setting. The right-angle PCB mount design allows the switch to be accessed through a hole in the side of an enclosure without opening it, making it perfect for field-configurable devices. Gold contacts ensure low contact resistance and long service life.

Electrical Specifications

• Positions: 16 (hexadecimal 0–F)
• Output: 4-bit binary code (BCD)
• Contact Rating: 20V DC @ 400mA
• Contact Style: Single-pole / 16-throw
• Contact Material: Gold-plated
• Termination: 6 PCB solder pins (2.54mm pitch)
• Row Spacing: 5.08mm (0.2")
• Body Dimensions: 12 × 10 × 10mm

How It Works — 4-Bit Binary Output

The switch has 6 PCB pins: 2 common pins (tied together internally) and 4 output pins representing binary values 1, 2, 4, and 8. When the switch is rotated to a position, the corresponding output pins are connected to the common pins, presenting the position value in binary format.

Truth Table (C = Common, X = Connected)

• Position 0: No outputs connected
• Position 1: Pin 1 connected to C
• Position 3: Pins 1 and 2 connected to C
• Position F (15): Pins 1, 2, 4, and 8 all connected to C

Wiring Options

• Active LOW (common to GND): Connect common pins to GND; read output pins with MCU input pull-ups enabled — output pins go LOW when connected
• Active HIGH (common to Vcc): Connect common pins to Vcc via pull-up; output pins go HIGH when connected
• Connect the 4 output pins to 4 digital input pins on your microcontroller to read the binary value

Typical Applications

• I²C / SPI device address selection: Set the hardware address of I²C sensors, EEPROMs, and expanders (0–F = 16 unique addresses)
• Operational mode selection: Select from up to 16 operating modes without firmware changes
• DIP switch replacement: Single rotary switch replaces a 4-switch DIP block with a more user-friendly interface
• Field configuration: Right-angle mount allows access through enclosure panel without opening the device
• Unit ID setting: Assign unique IDs to devices on a shared bus or network

Package Contents

• 1 × Alcoswitch 16-position hex rotary switch (right angle PCB mount)

New old stock Alcoswitch quality — gold contacts, 16 positions, 4-bit binary output in a right-angle PCB package for clean panel-accessible device configuration.

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