The **HRS-64-R** refers to a specific series of rotary DIP switches, typically manufactured by companies like **COPEL Electronics** (now Nidec Components). These components are used to manually set binary or hexadecimal values on a printed circuit board (PCB). --- ## Technical Specifications The "HRS" series is characterized by its compact size and high reliability. Below are the primary technical attributes: | Parameter | Specification | | :--- | :--- | | **Switch Type** | Rotary DIP Switch | | **Number of Positions** | 16 (Hexadecimal: 0-9, A-F) | | **Output Code** | Real Code (Binary Coded Hexadecimal) | | **Actuator Style** | Recessed (Flat) or Knob type | | **Terminal Pins** | 4-6 Pins (standard pitch) | | **Contact Rating** | 100mA, 5V DC (Switching); 100mA, 50V DC (Non-switching) | | **Mounting Type** | Through-hole or SMD (depending on sub-variant) | --- ## Key Components and Materials The internal construction of the HRS-64-R involves precision engineering to ensure contact stability: 1. **Wiper Contacts:** Usually made of a gold-plated copper alloy to prevent oxidation and ensure low contact resistance. 2. **Housing:** Heat-resistant plastic (e.g., PPS or PBT), allowing the part to withstand wave soldering or reflow processes. 3. **Rotor:** The dial that the user turns. In the "R" variant, this is often the "Real Code" indicator where position '1' connects pin 1 to common. 4. **O-ring Seal:** Many HRS models feature an internal O-ring to make the switch washable (IP67 rated) after soldering. --- ## Part Number Breakdown: HRS-64-R Understanding the nomenclature helps in identifying the exact variant: * **HRS:** Series designation (Miniature Rotary DIP). * **6:** Denotes the physical size or specific series generation. * **4:** Indicates the number of positions/code (4 usually represents 16-position Hexadecimal). * **R:** Stands for **"Real Code"**. This means the output logic follows standard binary (1, 2, 4, 8). *Note: Some variants use 'C' for Complementary Code.* --- ## Typical Applications These switches are used where configuration settings are changed infrequently: * **Address Setting:** Assigning IDs to devices on a RS-485 or CAN bus network. * **Mode Selection:** Choosing operation modes for industrial controllers. * **Frequency Tuning:** Setting base channels for RF modules. ---