The **KMMLS-322-R** is a specific model of a **Miniature Slide Switch**, typically manufactured by companies like **C&K** (now part of Littelfuse) or similar electronic component manufacturers. These switches are designed for compact electronic devices where space is at a premium. --- ### 1. Technical Specifications Below is a breakdown of the typical electronic and mechanical characteristics of the KMMLS series: | Parameter | Specification | | :--- | :--- | | **Switch Function** | SPDT (Single Pole Double Throw) | | **Current Rating** | 300 mA @ 6V DC | | **Contact Resistance** | 70 mΩ Max (Initial) | | **Insulation Resistance** | 100 MΩ Min @ 100V DC | | **Dielectric Strength** | 100V AC for 1 minute | | **Operating Life** | 10,000 Cycles | | **Mounting Type** | Surface Mount (SMT) / Right Angle | --- ### 2. Key Features The "R" in the suffix often denotes specific orientation or packaging (like Right Angle or Reel packaging). * **Miniaturization:** Its extremely low profile makes it ideal for hand-held medical instruments, IoT sensors, and wearable tech. * **Actuation:** Side-actuated (Right Angle), allowing the switch to be toggled from the edge of a Printed Circuit Board (PCB). * **Material Construction:** * **Housing:** High-temperature thermoplastic (LCP) to withstand reflow soldering. * **Contacts:** Usually copper alloy with silver or gold plating for reliable electrical conductivity. * **Terminals:** Lead-free tin plating. --- ### 3. Pinout and Circuitry The KMMLS-322-R is a **Single Pole Double Throw (SPDT)** switch. This means it has one common input and two possible output paths. ```circuit (1) Output A | (C) ---o (Common) | (2) Output B ``` * **Position 1:** Connects Pin C to Pin 1. * **Position 2:** Connects Pin C to Pin 2. --- ### 4. Common Applications Due to its small footprint and SMT design, it is frequently found in: 1. **Consumer Electronics:** On/Off switches for Bluetooth earbuds or remote controls. 2. **Medical Devices:** Mode selection in portable glucose monitors. 3. **Computing:** Reset switches or configuration "DIP-style" slide switches on compact motherboards.