The **LP4-OA-1-R-B-N-Y-R** is a specific part number for a high-quality, illuminated pushbutton switch manufactured by **E-Switch**. It belongs to the LP4 series, known for its right-angle mounting and multiple LED illumination options. --- ### Part Number Breakdown The alphanumeric code describes the specific physical and electrical characteristics of the switch: | Segment | Code | Description | | :--- | :--- | :--- | | **Series** | **LP4** | Illuminated Pushbutton Switch (Right Angle) | | **Circuit** | **OA** | DPDT (Double Pole Double Throw), Maintained (On-On) | | **Housing** | **1** | Round Cap Style | | **Bezel Color** | **R** | Red Bezel | | **Button Color**| **B** | Black Button | | **Terminal** | **N** | PC Pin (Through-hole) | | **LED 1 Color**| **Y** | Yellow LED | | **LED 2 Color**| **R** | Red LED | --- ### Technical Specifications This switch is designed for PCB mounting where space and tactile feedback are critical. #### 1. Electrical Ratings * **Current Rating:** 100mA @ 30VDC * **Contact Resistance:** 50mΩ Max (Initial) * **Insulation Resistance:** 100MΩ Min @ 500VDC * **Dielectric Strength:** 500VAC for 1 minute #### 2. Mechanical Properties * **Operating Force:** 150 ± 50 gf * **Travel:** Full travel of 3.0mm * **Operating Life:** 50,000 cycles (minimum) * **Operating Temperature:** -20°C to +70°C --- ### Key Features and Applications * **Right-Angle Design:** Specifically designed for mounting on the edge of a PCB, allowing the button to be accessed from the side of a device enclosure. * **Dual Illumination:** Features two separate LEDs (Yellow and Red), allowing for status indication (e.g., Yellow for Standby, Red for Active). * **Maintained Action:** Unlike a momentary switch, this "clicks" and stays in position until pressed again (Latching). #### Common Applications: * Networking and Telecommunications equipment. * Performance audio/visual consoles. * Industrial control panels. * External hard drive power buttons. --- ### Schematic Representation (DPDT) The switch controls two separate circuits simultaneously: * **Common Pins:** Central terminals. * **NC/NO Pins:** Normally Closed and Normally Open contacts for each pole. * **LED Pins:** Dedicated pins to power the Yellow and Red diodes.