1800nH Broadband Inductors Heavy Duty Through Hole Inductor 10MHz - 20GHz

High-Frequency Technical Summary
   The HALT60008 is an extraordinary, high-inductance, and ultra-broadband Conical Inductor designed for microwave RF bias networks, high-speed optoelectronics, and high-performance broadband bias-tees. Offering the highest nominal inductance in the entire broadband catalog—1800 nH (1.8 µH) ± 20%—and operating over an unprecedented frequency spectrum of 10 MHz to 20.0 GHz, this inductor is wound with a fine 0.08 mm (80 µm) copper wire and supports a continuous DC current of 500 mA.

   In ultra-broadband systems, achieving continuous isolation from low frequencies (down to 10 MHz) to microwave bands (up to 20 GHz) normally requires cascading multiple inductors of different values, which inevitably introduces destructive parasitic resonances. The HALT60008 resolves this challenge by providing an exceptionally high 1800 nH inductance combined with a tapered conical architecture. The continuous change in winding diameter smoothly distributes parasitic capacitance, providing a flat, resonance-free high-impedance response over the entire 10 MHz to 20 GHz bandwidth.

Key Performance Advantages
   Extreme Broadband Range (10 MHz - 20 GHz): Provides continuous, flat RF shielding from low MHz up to high microwave frequencies, replacing multiple cascaded inductors.
   Robust 0.08mm Wire Winding: Wound with fine 80 µm copper wire, enabling a high turn count to achieve 1800 nH (1.8 µH) while supporting high DC bias currents up to 500 mA.
   Eliminates Cascade Resonances: A single-component solution that suppresses signal dips and phase distortions commonly caused by multi-stage inductor biasing.
   Air-Core Saturation Protection: Prevents magnetic saturation at high power levels, ensuring absolute inductance stability and high-Q performance under varying temperatures.
   Solderable Flying Leads: Equips standard solderable gold/tin-plated copper flying leads on both small and large ends, providing easy integration onto microwave microstrips.

Overall Dimensions

Comprehensive Parameter Datasheet

Multi-Frequency Operational Performance Breakdown

The HALT60008 undergoes strict vector network analyzer (VNA) testing using microstrip calibration fixtures. Its broadband impedance and attenuation performance are categorized into three major frequency segments:

Microwave Micro-Assembly & Installation Guide
To preserve microwave signal integrity and prevent physical damage to the delicate copper wire, assembly operators must strictly follow this SOP:

Physical Alignment & Orientation
   Cone Tip Orientation: The small end of the conical inductor must point downward and be positioned perpendicular (≈90°) to the RF transmission microstrip line.
   Lead-Wire Length: Keep the flying lead from the small end (tip) as short as possible (ideally <0.3 mm to the microstrip). At 20 GHz, even a 0.5 mm lead wire acts as a significant parasitic inductor, introducing unwanted reflection and signal degradation.
   Physical Fixation: Conical inductors must be secured to the substrate using a small dot of non-conductive, low-outgassing epoxy (e.g., Epotek H70E or H65) on the side of the winding. This prevents resonant microphonic vibrations and mechanical failure under high-vibration environments.

Micro-Soldering and Welding SOP
   Soldering Temperature: Controlled micro-soldering tip temperature should be 280℃−320℃ for a duration of 3 seconds to prevent enamel degradation or melting of the 0.08mm copper wire.
   Lead-Free Compliance: Fully compatible with lead-free SAC305 solder and high-melting-point eutectic gold-tin (AuSn) or lead-tin (PbSn) solder alloys.

Test Data(10MHz-500MHz)