The part number **LP4-EE-1-R-B-N-Y-R** refers to a specific configuration of an illuminated pushbutton switch, typically manufactured by **E-Switch** (LP4 series). This series is known for its compact size and various LED illumination options. Below is a breakdown of the electronic and mechanical specifications based on the part numbering nomenclature. ### Part Number Breakdown | Segment | Code | Description | | :--- | :--- | :--- | | **Series** | **LP4** | Right Angle, Through-Hole Illuminated Pushbutton | | **Circuit** | **EE** | DPDT (Double Pole, Double Throw) - Latching | | **Actuator** | **1** | Round Cap Style | | **Housing** | **R** | Right Angle Mounting | | **Cap Color** | **B** | Black Cap | | **LED 1** | **N** | None (or No LED in position 1) | | **LED 2** | **Y** | Yellow LED | | **LED 3** | **R** | Red LED | --- ### Key Technical Specifications #### 1. Electrical Characteristics * **Contact Rating:** Typically 100mA @ 30VDC. * **Circuitry:** **DPDT (Double Pole Double Throw)**. This means the switch can control two separate circuits simultaneously, toggling between two output paths for each. * **Function:** **Latching (Push-On, Push-Off)**. The switch stays in the "down" position until pressed again. * **Contact Resistance:** 50mΩ Max (initial). * **Insulation Resistance:** 100MΩ Min @ 500VDC. #### 2. Illumination (LEDs) This specific model features a **Dual-LED** configuration: * **LED 1 (Yellow):** Provides visual feedback or status indication. * **LED 2 (Red):** Secondary status indicator. * **Forward Voltage:** Generally 2.0V to 2.5V (standard for Red/Yellow LEDs). *Note: External resistors are required to limit current to the LEDs (usually 20mA).* #### 3. Mechanical & Environmental * **Mounting:** **Right Angle (R)**. Designed to be soldered onto a PCB so that the button protrudes from the side (perpendicular to the board). * **Operating Force:** Approximately 200 ± 50 grams. * **Travel:** Full travel is roughly 3.30mm. * **Life Expectancy:** Typically 50,000 cycles. * **Operating Temperature:** -20°C to +70°C. --- ### Common Applications * **Telecommunications:** Signal routing and status indicators. * **Audio/Visual:** Toggle switches for mixing boards or processors. * **Consumer Electronics:** Power buttons with dual-state status (e.g., Yellow for Standby, Red for Active). * **Testing Equipment:** Mode selection in hand-held devices. ---