The **HTS-3F-R/BL** refers to a specific series of high-quality **Miniature Toggle Switches**, typically manufactured by brands like *Hecheng* or distributed through specialized electronic component suppliers. These switches are commonly used in industrial control panels, medical equipment, and telecommunications. Below is the detailed breakdown of its electronic specifications and physical characteristics. --- ### 1. Key Technical Specifications | Feature | Specification | | :--- | :--- | | **Switch Type** | Miniature Toggle Switch | | **Circuitry** | SPDT (Single Pole Double Throw) | | **Function** | ON - ON (3-Pin) | | **Current Rating** | 6A @ 125VAC / 3A @ 250VAC | | **Contact Resistance** | 20 mΩ Max (Initial) | | **Insulation Resistance** | 1000 MΩ Min @ 500VDC | | **Dielectric Strength** | 1500 VAC for 1 minute | | **Operating Temperature** | -25°C to +85°C | --- ### 2. Physical and Structural Components The "R/BL" designation often refers to the aesthetic or mounting configuration (Red/Blue or specific handle shapes). Here are the core electronic parts: 1. **The Lever (Actuator):** Usually made of chrome-plated brass or plastic. It provides the mechanical interface to change the electrical state. 2. **Contact Terminals:** These are the 3 pins at the bottom. * **Center Pin:** Common (COM). * **Outer Pins:** L1 and L2 (The circuit alternates between these two). 3. **Housing (Body):** Made of Diallyl Phthalate (DAP) or high-strength phenolic plastic. This material is chosen for its excellent heat resistance during soldering. 4. **Internal Mechanism:** A spring-loaded "seesaw" contact that snaps into place to ensure a low-resistance connection and prevent electrical arcing. --- ### 3. Terminal Mapping (SPDT) Since this is a 3-pin (3F) model, the wiring logic is as follows: | Pin Position | Switch Toggle Position | Connection Result | | :--- | :--- | :--- | | **Up** | Lever pushed UP | Center pin connects to Bottom pin | | **Center** | (N/A for 2-position) | No neutral "off" state in ON-ON | | **Down** | Lever pushed DOWN | Center pin connects to Top pin | --- ### 4. Common Applications * **Audio Equipment:** Selecting between two input signals. * **Power Supplies:** Switching between high/low voltage modes. * **DIY Electronics:** Logic toggles for microcontrollers (Arduino/ESP32). * **Instrumentation:** Manual override switches for automated systems.