The **FR02FR16P-R** is a specific electronic component produced by **NKK Switches**. It belongs to the FR02 series, which consists of ultra-thin, 10mm square DIP (Dual In-line Package) rotary switches. Below is a detailed breakdown of its electronic specifications and features. --- ### 1. Key Technical Specifications | Feature | Specification | | :--- | :--- | | **Manufacturer** | NKK Switches | | **Part Series** | FR02 Series | | **Number of Positions** | 16 Positions | | **Output Code** | Hexadecimal | | **Actuator Type** | Arrowhead (Rotary) | | **Mounting Type** | Surface Mount (SMD / SMT) | | **Contact Rating** | 100mA @ 5V DC (Non-switching); 100mA @ 5V DC (Switching) | | **Operating Temperature** | -25°C to +85°C | --- ### 2. Functional Description The FR02FR16P-R is a **Rotary Coded DIP Switch**. Unlike a standard toggle switch, this device translates the physical position of the rotary dial into a specific binary-coded output. * **16 Positions:** Since it is hexadecimal, it covers positions 0 through 9 and letters A through F. * **Hexadecimal Coding:** The switch has 4 output pins (plus a common pin). As you turn the dial, the internal contacts close in specific patterns to represent binary values (0000 to 1111). * **Low Profile:** The "FR02" designation indicates an ultra-thin design, making it ideal for high-density PCBs where vertical space is limited. --- ### 3. Physical & Material Features * **Terminal Type:** Gull-wing leads for surface mounting. * **Heat Resistance:** Constructed using high-temperature silicate glass-filled polyamide, allowing it to withstand infrared reflow soldering. * **Contact Reliability:** Features gold-plated contacts to prevent oxidation and ensure logic-level reliability over its lifespan (typically 10,000 steps). * **Actuator:** The "Arrowhead" style allows for easy adjustment using a small flat-head screwdriver. --- ### 4. Common Applications These parts are typically used for "set and forget" configurations on circuit boards: 1. **Address Setting:** Setting the unique ID for a device on a bus (like RS-485 or CAN bus). 2. **Mode Selection:** Choosing between different firmware operating modes. 3. **Configuration:** Adjusting hardware parameters without needing a digital interface or display.