The part number **4601-059LF** refers to a high-reliability **EMI/RFI Feedthrough Filter** manufactured by **Tusonix** (a subsidiary of CTS Electronic Components). These components are essential for suppressing high-frequency noise in electronic circuits while allowing DC or low-frequency signals to pass through. --- ### 1. Technical Specifications The "LF" suffix indicates that the part is **Lead-Free** and compliant with RoHS standards. Below are the primary technical characteristics: | Property | Value / Detail | | :--- | :--- | | **Component Type** | Feedthrough Capacitor / EMI Filter | | **Capacitance** | 100 pF | | **Capacitance Tolerance** | -0% to +100% (GMV - Guaranteed Minimum Value) | | **Voltage Rating** | 200 VDC | | **Current Rating** | 10 Amperes | | **Operating Temperature** | -55°C to +125°C | | **Circuit Configuration** | C-Filter (Single Element) | | **Mounting Style** | Bushing (Screw-in) | --- ### 2. Physical Construction The 4601 series is designed for rugged environments where electrical isolation is critical. * **Housing:** Solder-in or Bushing mount (this specific model is a threaded bushing style). * **Finish:** Silver or Gold plated leads/body for optimal conductivity and corrosion resistance. * **Dimensions:** It features a miniature profile, typically using a **#4-40 UNC-2A** thread for mounting through a chassis or bulkhead. --- ### 3. Key Applications Because of its ability to filter out electromagnetic interference (EMI) at the point where a wire enters a shielded enclosure, it is commonly used in: 1. **Telecommunications:** Protecting base stations and signal processing units from external noise. 2. **Military & Aerospace:** Ensuring secure, noise-free communication in cockpits and radar systems. 3. **Medical Equipment:** Shielding sensitive diagnostic electronics from power line interference. 4. **Industrial Controls:** Preventing high-frequency motor noise from disrupting control logic. --- ### 4. Why "GMV" Tolerance? In EMI filtering, the exact capacitance value is often less important than ensuring a *minimum* level of bypass. A **Guaranteed Minimum Value (GMV)** of 100pF ensures that the filter will perform at or above its noise-suppression rating, even if the actual capacitance is significantly higher.