Based on the part number provided, **520-R** typically refers to a specific type of **Tactile Switch** or a series of **Inductors**, depending on the manufacturer. However, in the electronic components industry, it most commonly refers to the **520 series of sub-miniature tactile switches** or a variant of high-frequency power inductors. Below is a breakdown of the technical specifications and characteristics for these electronic parts. --- ## 1. Tactile Switch (Series 520) If the 520-R refers to a switch, it is a momentary push-button used for low-current signal switching. ### Key Specifications | Feature | Description | | :--- | :--- | | **Switching Type** | SPST (Single Pole Single Throw) | | **Mounting Type** | Through-hole (R often signifies Right-Angle or Reel packaging) | | **Actuation Force** | 100g, 160g, or 260g (depending on sub-model) | | **Electrical Life** | 100,000 to 500,000 cycles | | **Contact Rating** | 50mA @ 12VDC | --- ## 2. Power Inductor (Series 520-R) In power electronics, 520-R often represents a **Molded Power Inductor** used for voltage regulation. ### Technical Parameters | Parameter | Value Range | | :--- | :--- | | **Inductance** | Usually ranging from 0.1µH to 10µH | | **DCR (Direct Current Resistance)** | Extremely low (mΩ range) to minimize heat | | **Shielding** | Magnetically shielded to prevent EMI | | **Core Material** | Iron Powder or Ferrite | --- ## 3. Applications These components are found in various consumer and industrial electronics: * **Tactile Switches:** Remote controls, keyboards, medical devices, and instrumentation panels. * **Inductors:** Laptop motherboards, DC-DC converters, and smartphone power management circuits. ### Comparison Table: Switch vs. Inductor | Feature | 520-R Switch | 520-R Inductor | | :--- | :--- | :--- | | **Function** | User Input / Interface | Energy Storage / Filtering | | **Passive/Active** | Passive (Mechanical) | Passive (Electromagnetic) | | **Connection** | 4-pin or 2-pin | 2-pin | --- ## 4. Part Number Decoding If you are looking at a specific datasheet (like from **CTS** or **Coiltronics**), the "R" usually stands for: * **RoHS Compliant:** Lead-free manufacturing. * **Right Angle:** Physical orientation on the PCB. * **Tape & Reel:** The packaging method for automated assembly.