The part number **C0805H393DGGACTU** refers to a high-temperature, surface-mount multilayer ceramic capacitor (MLCC) manufactured by **KEMET**. --- ## 🔍 Technical Specifications Breakdown This part is specifically engineered for harsh environments where standard capacitors might fail. Below are the detailed specifications: | Parameter | Specification | Details | |:---|:---|:---| | **Capacitance** | 39 nF (0.039 µF) | The energy storage capacity. | | **Tolerance** | ±0.5 pF / Grade D | Tight tolerance for precision applications. | | **Voltage (DC)** | 2000 V (2 kV) | High voltage rating. | | **Case Size** | 0805 (2012 Metric) | Physical size: 2.0mm x 1.25mm. | | **Dielectric** | C0G (NP0) | Ultra-stable, non-ferroelectric material. | | **Operating Temp** | -55°C to +200°C | **High Temperature** series (H-series). | | **Termination** | 100% Matte Tin (Sn) | Standard solderable finish. | --- ## 🛠️ Key Features ### 1. C0G (NP0) Dielectric Stability The C0G dielectric is the most stable capacitor material available. It exhibits **zero capacitance change** with respect to: * **Time:** No aging effects. * **Voltage:** No DC bias aging (capacitance remains constant regardless of applied voltage). * **Temperature:** Linear and predictable behavior across the entire -55°C to +200°C range. ### 2. High Temperature Capability The "H" in the part number indicates KEMET’s High-Temperature series. While standard industrial capacitors stop at 125°C or 150°C, this component is rated for **200°C**, making it ideal for down-hole drilling, aerospace, and automotive under-hood applications. ### 3. High Voltage Rating Rated at **2000V**, this 0805 chip is designed with internal electrode structures that prevent "arcing" (electrical discharge across the surface or through the body), which is a common failure point in high-density high-voltage designs. --- ## 📝 Part Number Decoder Understanding the KEMET nomenclature for this specific part: | Code | Meaning | |:---|:---| | **C** | Ceramic | | **0805** | Case Size (0.08" x 0.05") | | **H** | High Temperature (200°C) | | **393** | 39 + 3 zeros = 39,000 pF (39 nF) | | **D** | Tolerance (±0.5 pF or specialized grade) | | **G** | Voltage Rating (2000V) | | **G** | Dielectric (C0G) | | **A** | Failure Rate / Design (Standard) | | **C** | Termination (100% Matte Sn) | | **TU** | Packaging (7" Reel / Marked) | --- ## 🚀 Common Applications * **Energy Exploration:** Down-hole "Logging While Drilling" (LWD) tools. * **Aerospace:** Engine control units and sensors. * **Power Electronics:** Snubber capacitors in high-frequency high-voltage converters. * **Automotive:** EV/HEV inverters and charging systems.