The **NK-59A-2-R** is a specific type of electronic component typically categorized under **Audio/Visual Connectors**, specifically a **6.35mm (1/4 inch) Phone Jack**. These are widely used in professional audio equipment, musical instruments, and telecommunications. Below is a detailed breakdown of its electronic and physical characteristics. --- ### 1. General Specifications The NK-59A-2-R is designed for PCB (Printed Circuit Board) mounting. It is a "Right Angle" connector, meaning the jack entry point is perpendicular to the solder pins. | Feature | Specification | | :--- | :--- | | **Component Type** | Phone Jack / Audio Jack | | **Size** | 6.35mm (1/4 inch) | | **Mounting Type** | Through-hole PCB Mount | | **Orientation** | Right Angle | | **Number of Poles** | 2-Pole (Mono/TS - Tip/Sleeve) | | **Material (Housing)** | Thermoplastic (UL 94V-0 rated) | | **Material (Contacts)** | Copper Alloy (usually Nickel or Silver plated) | --- ### 2. Electrical Characteristics These parts are designed to handle low-voltage analog signals with minimal resistance and high insulation. * **Contact Resistance:** Typically $< 50m\Omega$ to ensure signal integrity. * **Insulation Resistance:** Typically $> 100M\Omega$ at 500V DC to prevent crosstalk or leakage. * **Dielectric Withstanding Voltage:** Usually rated for 500V AC for 1 minute. * **Current Rating:** Small signal application, usually around 0.5A to 1A. --- ### 3. Mechanical & Physical Design The "2-R" suffix often indicates specific structural variations: 1. **Mono Configuration (TS):** It features two main contacts: * **Tip:** Carries the audio signal. * **Sleeve:** Serves as the ground/shield. 2. **Kinked Terminals:** The "R" or specific model variations often refer to the pin shape. Kinked pins allow the part to "snap" into the PCB and stay in place during the wave soldering process. 3. **Durability:** Rated for approximately 5,000 mating cycles. --- ### 4. Common Applications * **Musical Instruments:** Electric guitars, bass guitars, and synthesizers. * **Audio Interfaces:** Inputs and outputs on mixers and sound cards. * **Amplifiers:** Speaker output or headphone monitoring ports. * **Industrial Equipment:** Simple signal switching and control interfaces. --- ### 5. Circuit Symbol Representation In an electronic schematic, the NK-59A-2-R is represented by a standard TS Jack symbol: ```text Tip (Signal) / ----O/ | | O------- Sleeve (Ground) ------------ ```