The part number **CK45-R3AD222KAVRA** refers to a high-voltage ceramic disc capacitor manufactured by **TDK Corporation**. These components are primarily used in power supply circuits for noise suppression and energy storage. --- ### 1. Technical Specifications Breakdown The alphanumeric code follows TDK’s specific naming convention. Here is the breakdown: | Code Segment | Parameter | Detail | | :--- | :--- | :--- | | **CK45** | Series Name | Temperature checking type (standard high voltage) | | **R3AD** | Voltage Rating | **1kV (1000V DC)** | | **222** | Capacitance Value | **2200 pF** (22 × 10^2) | | **K** | Tolerance | **±10%** | | **A** | Lead Type | Vertical Kink (Long Lead) | | **V** | Packaging | Ammo Pack (Taped) | | **RA** | Internal Code | RoHS Compliant / Halogen Free | --- ### 2. Key Characteristics * **Capacitance:** 2.2nF (nanofarads) or 2200pF (picofarads). * **Voltage:** Rated for high-voltage stress up to 1000V DC. * **Temperature Characteristic:** Typically utilizes "R" characteristic (max capacitance change of ±15% over -25°C to +125°C). * **Construction:** Ceramic dielectric disc coated with flame-retardant epoxy resin (UL94V-0 compliant). --- ### 3. Common Applications Due to its high voltage rating and stability, this part is commonly found in: 1. **Switching Power Supplies:** Used for snubber circuits to protect semiconductors from voltage spikes. 2. **Ballasts:** Electronic lighting ballasts. 3. **Displays:** CRT or high-end LED monitor power boards. 4. **Inverters:** DC-AC conversion systems where noise filtering is required. --- ### 4. Comparison with Similar Parts If you are looking for alternatives, ensure the **Voltage** and **Dielectric Type** match or exceed the original: | Part Feature | CK45-R3AD222KAVRA | Common Alternative | | :--- | :--- | :--- | | **Voltage** | 1000V | 1000V or 2000V | | **Dielectric** | Class 2 (High K) | X7R or Y5P | | **Mounting** | Through-Hole | Through-Hole |