What are Space-Qualified Power Inductors?

Inductors are passive electrical components that store energy in a magnetic field when current flows through a conductive coil. Their operation is governed by electromagnetic induction, where a change in current induces a voltage opposing that change, as described by fundamental circuit laws. The inductance value is determined by factors such as coil geometry, core material and number of turns, which collectively define the component’s ability to resist variations in current.

In RF, power management, and space-grade systems, inductors are used for filtering, energy storage, impedance matching and noise suppression. Their performance is influenced by parasitic elements, core losses and frequency-dependent behavior, making precise specification critical for system efficiency and stability. Selection of appropriate inductor characteristics ensures optimal performance across operating conditions, particularly in high-frequency and high-reliability environments.

Key Specifications of Space-Qualified Power Inductors:

• Section: Defines the application domain or functional grouping of the inductor, such as RF, power or signal conditioning sections. This classification determines the design priorities, including frequency response, current handling and loss characteristics, ensuring alignment with system-level requirements.
• Types of Inductor: Specifies the construction and structural form, such as air-core, ferrite-core, multilayer or wirewound designs. Each type exhibits distinct electrical and thermal characteristics, influencing inductance stability, loss mechanisms and suitability for different frequency and power conditions.
• Inductance: Represents the ability of the inductor to store energy in its magnetic field. This parameter directly impacts filtering performance, impedance characteristics and energy storage capability within the circuit.
• Inductance Tolerance: Indicates the permissible variation from the nominal inductance value. Tighter tolerance ensures predictable circuit behavior and consistent performance, which is particularly important in precision RF and timing-sensitive applications.
• DCR: Refers to the direct current resistance of the inductor winding. Lower DCR minimizes resistive losses and heat generation, improving efficiency and thermal management in power applications.
• SRF: Stands for self-resonant frequency, the frequency at which the inductor’s inductive reactance equals its parasitic capacitive reactance. Beyond this point, the inductor behaves capacitively, making SRF a critical parameter for ensuring proper operation within the intended frequency range.

The Largest Database of Inductors

SatNow has listed Inductors 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 Inductors 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.