The **CK-R** series typically refers to a specific category of **Multilayer Ceramic Capacitors (MLCCs)** or, in some contexts, specific automotive-grade resistor/capacitor networks. Most commonly, in the electronics industry, this designation aligns with the **MIL-PRF-39014** standard for established reliability military-grade ceramic capacitors. Below is a breakdown of the electronic specifications and characteristics associated with these parts. --- ### 1. Key Technical Specifications The CK-R series is defined by its robust construction and high reliability under extreme conditions. | Feature | Description | | :--- | :--- | | **Dielectric Material** | Usually **X7R** (Temperature stable, ±15% capacitance change from -55°C to +125°C). | | **Voltage Range** | Typically 50V, 100V, or 200V DC. | | **Capacitance Range** | Ranges from 10pF up to 1.0μF (depending on case size). | | **Termination** | Radial leads (dipped) or axial leads for through-hole mounting. | | **Reliability Level** | Rated by failure rate levels: M, P, R, and S (S being the highest). | --- ### 2. Component Structure These parts are designed to withstand mechanical stress and environmental factors better than standard commercial components. * **Ceramic Dielectric:** High-purity ceramic layers interleaved with metal electrodes. * **Encapsulation:** Coated in a flame-retardant epoxy resin (often gold or blue) to protect against moisture and vibration. * **Lead Material:** Usually solder-coated copper or solderable alloys to ensure strong mechanical joints. --- ### 3. Part Numbering (Nomenclature) A typical CK-R part number (e.g., **CKR05BX103KM**) follows a specific coding logic: 1. **Series (CKR):** MIL-spec established reliability designation. 2. **Style (05):** Physical size and shape (e.g., 05, 06, 22). 3. **Characteristic (BX):** Voltage-temperature limits (similar to X7R). 4. **Capacitance (103):** 10 followed by 3 zeros (10,000pF or 0.01μF). 5. **Tolerance (K):** Standard ±10% (J=5%, M=20%). 6. **Failure Rate (M):** Indicates the percentage of failures per 1,000 hours of testing. --- ### 4. Applications Because of their high reliability and military testing, these parts are rarely used in consumer electronics. Instead, they are found in: * **Aerospace & Defense:** Flight controls, radar, and communication systems. * **Medical Equipment:** Life-support systems where component failure is not an option. * **Industrial Controls:** High-vibration environments and heavy machinery. ---