CM-HVLP

These capacitors are designed for several demanding applications. Typical use cases include:

• Motor engine exciters.
• Thruster and propulsion power units.
• Ignition systems, PFN, and other rapid pulse applications.
• Traveler Wave Tubes (TWT) used for radars and seekers.
• High voltage filtering.

If your application requires RoHS compliance, you can easily specify this by including the letter "W" in your ordering code (for example, "CM-HVLP W"). Standard orders without the "W" are not RoHS compliant.

The capacitance for the CM-HVLP series ranges from 10 nF to 750 nF. The components handle rated continuous voltages between 1500 VDC and 4000 VDC, while supporting maximum discharge voltages for pulse applications from 2500 VDISCH up to 5000 VDISCH.

The capacitor terminations are generally protected by a nickel barrier formed by electrolytic deposit. This barrier gives chip capacitors leaching performance far exceeding the requirements of all applicable standards. The nickel barrier guarantees a minimum resistance to soldering heat for a period of 1 minute at 260°C in a tin-lead (60/40) or tin-lead-silver (62/36/2) bath without noticeable alteration to the solderability. It also allows repeated soldering-unsoldering and the longer soldering times required by reflow techniques.

However nickel barrier amplifies thermal shock and is not recommended for chip sizes equal or greater than CNC Y (30 30) - (C 282 to C 288 - CNC 80 to CNC 94).

Standard silver mica capacitors are normally designed to handle voltages from 100 to 1000 volts. High-voltage RF transmitter applications can call for higher tolerances. Mica capacitors are available for voltages up to 20kV.

Our expert engineering team can create the mica capacitor with the characteristics you require. Send us your drawing or file and we will work with you to manufacture the correct size, lead style and capacitance you desire.

Reliability and performance are key in many industries. Exxelia's mica dielectric capacitors are designed to offer:

• Stable Performance: Unlike other capacitor technologies, mica capacitors maintain consistent performance over time and across temperature variations, ensuring reliability in critical applications.
• High Q Factor: These capacitors provide a high Q factor, minimizing energy loss and improving efficiency in RF applications.
• Wide Operating Range: With voltage ratings up to 1kV DC and temperature tolerance up to +150°C, they are suited for demanding environments.
• Optimized Lead Times: Improved production processes ensure faster delivery compared to industry standards.
• No Risk of Obsolescence
• Custom Design Options

This natural mineral insulator has outstanding dielectric properties that are ideal for long-life high-stability capacitors with low loss at all frequencies, and high dielectric strength. This type of capacitor is used particularly for high frequency and delay line applications, oscillating circuits, emission devices and calibrators.

Mica dielectric capacitor technology allows for several custom design applications including: 

• High voltage capacitors (up to 50 kV)
• High temperature capacitors (up to 250°C)
• Precision capacitors (up to ± 0.1%)
• High stability capacitors (– 20 + 30 ppm/°C)
• High frequency capacitors ( up to several GHz). 

The majority of these capacitors are manufactured to comply to specifications NF-C-83120;MIL-C-5 and MIL-PRF-39001 standards.

Mica capacitors are noted for the following characteristics:

• Temperature performance
• Low loss at all frequencies
• High dielectric strength
• Stability over time

Exxelia's MIL-qualified film and mica capacitors comply with standards such as:

• MIL-PRF-83446 (Mica capacitors)
• MIL-PRF-55510 (Polyester film capacitors)
• MIL-PRF-87217 (Polypropylene film capacitors)

Film and mica capacitors offer excellent stability, low dielectric losses, and high reliability under extreme environmental conditions. They are often preferred for high-frequency, high-voltage, and high-temperature applications.

Our high voltage capacitors are specifically designed to be able to withstand a larger amount of electrical charge than other types of capacitors can offer. They use two main mechanisms to store the energy that is being transmitted, which is contrary to the conventional dielectric method that is used with other types of capacitors. The first main method used to store electricity is called double layer capacitance, while the second is called pseudo capacitance. These methods are electrostatic and electrochemical in origin, respectively, which allows high voltage capacitors to combine the energy storing methods of normal capacitors with the methods used during the operation of a normal battery.

This initiative focuses on designing a control system that mitigates partial discharge inception. The goal is to create the smallest, highly reliable component for specified high operating voltages. The key benefit is achieving long-term reliability at high voltage with no partial discharge.