The **KAS-A1B-R** is a specific electronic component, typically categorized as a **DIP (Dual In-line Package) Switch**. These switches are used on printed circuit boards (PCBs) to customize the behavior of an electronic device without needing specialized tools. --- ## 1. Technical Specifications Below are the general technical parameters for the KAS series (specifically the A1B-R variant): | Parameter | Specification | |:---|:---| | **Switch Type** | DIP / Slide Switch | | **Number of Positions** | 1 Position (Single Pole Single Throw - SPST) | | **Actuator Style** | Raised Actuator (Slide) | | **Contact Rating** | 25mA @ 24VDC (Switching) / 100mA @ 50VDC (Non-switching) | | **Mounting Type** | Through-Hole | | **Pitch** | 2.54 mm (0.1 inch) | | **Contact Plating** | Gold over Nickel (Ensures high reliability) | --- ## 2. Key Features The "A1B-R" suffix often denotes specific physical and packaging characteristics: * **Raised Actuator:** The "A" style usually refers to an extended slider that is easy to move with a fingernail or small tool, as opposed to "recessed" versions. * **Top Tape Seal:** Many models in this series feature a removable top tape, allowing the part to survive **wave soldering** and aqueous cleaning processes without contaminants entering the housing. * **Gold Contacts:** The use of gold plating prevents oxidation, making it ideal for low-voltage logic circuits where signal integrity is critical. * **RoHS Compliant:** The "-R" suffix commonly indicates compliance with environmental regulations regarding lead-free construction. --- ## 3. Common Applications Since this is a 1-position switch, it acts as a simple "On/Off" toggle for hardware configuration: 1. **Address Setting:** Used in industrial BUS systems to set a unique ID for a peripheral. 2. **Mode Selection:** Toggling between different operating modes (e.g., Test Mode vs. Normal Mode). 3. **Hardware Enable/Disable:** Manually enabling or disabling a specific feature like a Write-Protect on an EEPROM. 4. **Option Strapping:** Replacing "jumpers" to make the PCB cleaner and easier to configure by the end-user. --- ## 4. Termination and Footprint The KAS-A1B-R uses standard **Through-Hole Technology (THT)**. ```text Pin Layout (Top View): _______ | [ ] | <-- Slide Actuator | 1 | |_______| | | <-- 2.54mm Lead Spacing ```