What are Space Qualified Capacitors?

Capacitors are passive electronic components that store and release electrical energy in the form of an electric field between two conductive plates separated by a dielectric material. When a voltage is applied, charge accumulates on the plates, creating a potential difference that can be discharged when required. Capacitors are fundamental in signal filtering, energy storage, decoupling and timing applications across analog and digital electronic systems.

The behavior of a capacitor is governed by its physical construction and dielectric properties, which influence parameters such as energy density, frequency response and loss characteristics. In high-reliability and space-grade systems, capacitors must maintain stability under varying thermal, electrical and radiation conditions. Their selection directly impacts circuit performance, including noise suppression, power integrity and signal coupling efficiency.

Key Specifications Space Qualified Capacitors: 

• Capacitance: Represents the ability of the capacitor to store electric charge per unit voltage. It determines the energy storage capacity and influences filtering characteristics, timing constants and coupling behavior in electronic circuits.
• Voltage: Specifies the maximum voltage that can be safely applied across the capacitor terminals. This parameter is critical for ensuring reliability and preventing dielectric breakdown under operating conditions.
• Tolerance: Defines the allowable deviation of the actual capacitance value from its nominal specification. Tolerance affects circuit precision, particularly in applications requiring accurate timing or frequency control.
• Dielectric Material: Describes the insulating medium between the capacitor plates. The dielectric determines key performance attributes such as permittivity, stability, loss characteristics, and temperature dependence.
• Dissipation Factor: Indicates the inherent energy loss within the capacitor due to dielectric and resistive effects. It impacts efficiency, heat generation, and suitability for high-frequency or high-Q applications.
• Package Type: Refers to the physical form and mounting style of the capacitor. Package selection influences thermal management, mechanical stability, integration density and compatibility with assembly processes and environmental requirements.

The Largest Database of Capacitors

SatNow has listed Capacitors from the leading manufacturers and made them searchable by specification. You can enter the key parameters and the search tool will scan catalogs from the leading manufacturers to identify products that meet your spec. Once you find Capacitors that meet your requirement, you can view product information, download datasheets or request quotations. Quotation requests will be routed to the manufacturer of the product who will get back to you directly. The quotation will also be routed to distributors of the product in your region.