The **30LVSD33X-R** is a high-performance, single-layer ceramic disc capacitor manufactured by **Vishay Cera-Mite**. These components are specifically designed for low-voltage DC applications where stability and compact size are required. --- ### 1. Technical Specifications The part number follows a specific nomenclature that defines its electrical characteristics: | Parameter | Specification | | :--- | :--- | | **Capacitance Value** | 0.033 µF (33,000 pF) | | **Voltage Rating** | 3000 VDC (3 kV) | | **Tolerance** | ±20% | | **Temperature Characteristic** | Y5S (Stable within -30°C to +85°C) | | **Mounting Type** | Through-hole | | **Termination** | Radial leads | | **RoHS Compliant** | Yes (indicated by the -R suffix) | --- ### 2. Physical Construction The **30LVSD33X-R** belongs to the "LV" (Low Voltage/Commercial) series despite having a high voltage rating in certain sub-categories. * **Dielectric:** Ceramic (Class II). * **Coating:** Flame-retardant epoxy resin (conforms to UL 94 V-0). * **Leads:** Tinned copper wire for easy soldering. --- ### 3. Key Applications Because of its high voltage rating and ceramic stability, this part is commonly used in: 1. **Switching Power Supplies:** For snubbing and noise suppression. 2. **High Voltage DC Buffering:** Protecting circuits from voltage spikes. 3. **Lighting Ballasts:** Filtering in electronic lighting systems. 4. **CRT/Display Circuits:** Used in legacy high-voltage display drivers. --- ### 4. Part Number Breakdown * **30LV:** Series identifier (Ceramite Low Voltage/High Voltage Commercial). * **S:** Temperature coefficient code. * **D33:** Capacitance code (33 represents the significant digits). * **X-R:** Packaging and compliance suffix (RoHS compliant). --- ### 5. Summary Table | Feature | Description | | :--- | :--- | | **Brand** | Vishay / Cera-Mite | | **Dielectric Type** | Ceramic Disc | | **Reliability** | High insulation resistance and low dissipation factor | | **Lead Style** | Straight or Kinked (depending on exact order sub-code) |