HongAn Microwave Co., Ltd.
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| Brand Name: | Hoan |
| Model Number: | HALT20008 |
| MOQ: | 10 |
| Payment Terms: | L/C,D/A,D/P,T/T,Western Union |
Powering High-Power RF Amplifiers: The High-Current 500mA Advantage
In high-power RF transmitters and broadband Bias Tees designed for GaAs (Gallium Arsenide) and GaN (Gallium Nitride) solid-state power amplifiers (SSPAs), typical micro-choke inductors quickly burn out or saturate due to high bias currents.
The HALT20008 solves this power bottleneck. By utilizing a uniform, low-DCR 0.08mm high-purity copper wire throughout the entire winding, it safely handles up to 500 mA of continuous DC bias current (2.5 times the current capacity of standard 40GHz chokes) with minimal heat generation.
It provides an outstanding 130 nH ± 20% inductance with a flat, resonance-free broadband response spanning from 200 MHz to 22 GHz, covering the entire X-band, Ku-band, and K-band seamlessly.
Dimensions
Detailed Technical Specifications (HALT20008)
| Technical Parameter | Certified Specification Value | Test /Environmental Conditions |
| Model Number | HALT20008 | |
| Inductor Style | High-Current Broadband ConicalChoke | Single wire diameter tapered coil |
| Nominal Inductance | 130 nH±20% | Tested at high-frequency standard |
| Max. Continuous Current | 500 mA (0.5 A) | Optimized for active power circuits |
| Operating FrequencyRange | 200 MHz -22 GHz | Flat, ripple-free broadband response |
| Winding Wire Diameter | 0.08 mm (Uniform) | Maximized current density & low DCR |
| Operating Temp. Range | -55°Cto +125°C | Fully compliant with aerospace standards |
| Lead Assembly Method | Solderable Process | High-temperature reliable jointing |
| Mechanical Securing | Adhesive/Epoxy Required | Must be glued during assembly |
Compare: HALT20008 vs. HALT20005
| Feature /Model | HALT20008 (High-Current Model) | HALT20005 (Ultra-High Frequency Model) |
| Max.Current | 500mA | 200 mA |
| Winding Process | 0.08 mm Uniform Wire | 0.05 mm &0.08 mm Graded |
| Frequency Range | 200 MHz 22 GHz | 200 MHz - 40 GHz |
| Inductance Value | 130 nH±20% | 120 nH±20% |
| Primary Advantage | High power handling, ideal forGaN/GaAs power biases | Millimeter-wave bandwidth, ideal for 40GHzoptical/RF systems |
Test data(10MHz-500MHz)
Test data(10MHz-20GHz)
Micro-Assembly & Mounting Best Practices
To ensure the HALT20008 operates at its nominal 130nH inductance and prevents parasitic interference on your high-power PCB layout:
1.Apex (Small End) Orientation: Solder the conical apex (small head) directly to the RF transmission line trace, keeping the connecting lead as short as possible (ideally <0.5) to prevent high-frequency insertion loss spikes.
2.Epoxy Underfill Required: Because of the larger 0.08mm wire weight, the HALT20008 must be secured with a non-conductive, low-dielectric RF epoxy/glue at its base during assembly to prevent mechanical fatigue and microphonics.
3.Heat Dissipation: Ensure the base of the coil has adequate air gap or non-conductive thermal pad space if operating continuously near the 500mA thermal limit.
FAQ
Q1: Can I run more than 500mA through the HALT20008 intermittently?
A: The 500mA rating is for safe continuous DC operation at +125℃ ambient. Running higher currents can increase the coil's internal temperature and DCR, possibly degrading performance. For higher current needs, contact Vibratac for custom wire-gauge conical coils.
Q2: Does Vibratac provide step models (.stp) for mechanical space planning?
A: Yes. We provide full 3D STEP models and High-Frequency S-parameter simulation data (.s2p) from 10MHz to 22GHz to ensure hassle-free CAD integration and RF circuit design.
Q3: What are the storage requirements to prevent lead tarnish?
A: The HALT20008 is shipped in standard anti-static waffle packs. Keep them stored at 20–25℃ and 40%–60% RH. The recommended shelf life is 1 year under standard storage conditions.
