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High-Frequency & High-Stability Air-Core Inductor 91MLA1000503R — Preferred Core Component for RF & Microwave Applications

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The 91MLA1000503R air-core inductor is a high-performance RF component. Precisely wound with sophisticated craftsmanship, it features 10 turns, a wire diameter of 0.05mm and an inner diameter of 0.3mm, with inductance precisely controlled at 14nH±20%.
Boasting a maximum current capacity of 400mA, this inductor operates stably across a broad frequency range of 3–20GHz. It has an operating temperature range of -55℃ to +125℃, making it suitable for harsh environments.
The storage conditions are 20–25℃ with 40%–60% humidity, and the shelf life is 1 year from delivery when stored properly. It is suitable for soldering processes. During assembly, the coil body should be kept perpendicular to the RF signal transmission line with leads at the transmission line end shortened as much as possible. After debugging, it must be secured with glue. It is an ideal choice for scenarios such as RF power supply chokes.
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With its outstanding performance, the 91MLA1000503R air-core inductor has become a core supporting component for RF and microwave equipment. The product features a broadband operating range of 3–20GHz and a wide temperature tolerance from -55℃ to +125℃, which can meet the application requirements of multiple scenarios.

Tested by the Agilent N5230A network analyzer, this inductor achieves an ultra-low insertion loss of -0.06dB at key frequency bands including 1.5GHz, 3GHz and 20GHz, with excellent standing wave ratio and outstanding signal transmission stability. Its precise inductance tolerance of 14nH±20% ensures performance consistency of mass-produced products.

Compatible with soldering processes, it enables convenient assembly and high reliability. This product can help improve the signal quality of RF equipment and reduce failure rates. It is now available in bulk supply, and manufacturers are welcome to consult and purchase.

Name Air Core Inductor
Model 91MLA1000503R
Number of Turns 10
Wire Diameter 0.05mm
Inner Diameter 0.3mm
Inductance 14nH±20%
Maximum Withstand Current 400mA
Recommended Operating Frequency 3-20GHz
Operating Temperature -55℃——+125℃
Remarks: 1. Storage Conditions: 20-25℃, 40%-60% humidity;2. Shelf Life: 1 year after delivery under specified storage conditions;3. Suitable for tape soldering process;4. Assembly precautions and test data are shown on the next page.

Overall Dimensions

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Assembly Precautions

During assembly, the coil body should be as perpendicular as possible to the RF signal transmission line, the leads at the transmission line end should be kept as short as possible, and it is recommended to fix with glue after debugging.

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Test Data (10MHz-20GHz)

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