Overview
Steward’s Chip Inductors serve as a cost-effective solution for densely packed PCB designs, bringing forth a robust construction paired with superior inductance versus frequency performance. Steward’s commitment to quality is evident in their ISO 9001 and QS 9000 certifications, with the datasheet reflecting revision 2 as of January 2004. These inductors find versatile applications across RF and wireless communication, IT equipment, automotive electronics, audio equipment, and more, with their design tailored for filters.
Features and Applications
Features of the Steward chip inductors include a compact footprint, economical value, durable construction, and excellent inductance vs. frequency characteristics. They are available in a range of materials suitable for both broad band and high-frequency applications. Applications span various fields such as RF and wireless communication, computers, telecommunications, radar systems, automotive electronics, cellular phones, pagers, personal digital assistants (PDAs), keyless remote systems, and low-voltage power supply modules.
Test Specifications
To ensure quality, Steward chip inductors undergo extensive testing using equipment such as the HP4396A or HP8753 Network/Spectrum Analyzer, HP43961A Impedance Test Kit, HP16192A Test Fixture or custom fixtures by Inter-Continental Microwave, and the HP16200A DC Bias Adapter, along with the Philips PM2811 DC Power Supply. Testing conditions are standardized at an ambient temperature of 23.5°C with a tolerance of ±2°C, a bandwidth of 3 kHz, and a sweep time of 423 ms. Inductance ratings are maintained at ±10% at the rated frequency, whereas maximum current ratings accord to a temperature rise limit of 40°C under continuous current. Moreover, these components are built to withstand ambient operating temperatures ranging from -55°C to +125°C.
Part Numbering System and Product Examples
The Steward part numbering system encodes product series, part and size code, rated impedance, current value, packaging, and additional descriptions such as tolerance. For instance, a part numbered “IC0603470KO” would specify a series IC, 0603 part size, with a rated impedance of 470 and a tolerance of ‘K’ or ±10%. Numerous inductor specifications are listed, showing self-resonant frequencies, inductance values, DCR (Direct Current Resistance) maximums, and rated current capacities. Example products provided demonstrate a range of inductance values from 47.00nH to 1,800.00nH, with corresponding max DCR Ohms and rated continuous current values, suitable for a multitude of signal application needs.
Contact Information
The datasheet includes contact information for Steward’s offices, covering North America, Mexico, Europe and Asia Pacific, ensuring global customer support. It provides phone, fax numbers, and email addresses for each regional office.
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