HongAn Microwave Co., Ltd.
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| Brand Name: | Hoan |
| Model Number: | HGM221S30V220 |
| MOQ: | 10 Pieces |
| Payment Terms: | L/C,D/A,D/P,T/T |
In short: The HGM221S30V220 is a 220 pF, 30 V single-layer MOS capacitor built on high-resistivity float-zone silicon with a thermally grown SiO2 dielectric. Its gradient impedance interface smooths the transition to the surrounding circuit so the capacitor keeps a consistent response over an ultra-wideband range, and it also holds sub-degree phase consistency between elements for array use. Custom capacitance values and interface profiles are available.
| Item | Value |
| Brand | Hoan |
| Model | HGM221S30V220 |
| Category | MOS Capacitors |
| Capacitance | 220 pF ±5% (±2% on request) |
| Rated DC Voltage | 30 V |
| Dielectric | Thermal SiO2, paraelectric (300 nm) |
| Interface | Gradient impedance matching layer (wafer-defined) |
| Phase Consistency | Sub-degree, element-to-element |
| Usable Bandwidth | DC to 40 GHz (typical) |
| Termination | Wire bond or flip-chip micro-bump |
| Chip Size | 0.50 x 0.50 x 0.15 mm |
| Operating Temperature | -55 °C to +125 °C |
| Place of Origin | Shaanxi, China |
| Certification | ISO 9001:2015, RoHS |
| MOQ | 10 pieces |
| Lead Time | 5-7 working days for stock, 3-4 weeks for production |
The matching layer is fabricated as part of the wafer process, between the dielectric interface and the electrode, using a graded sequence of layers. Because it is defined lithographically, the profile can be adjusted per design to place the transition where the surrounding circuit needs it. This keeps the matching integrated into the component rather than requiring external matching elements.
In addition to its broadband interface, the part holds sub-degree phase consistency between elements, so it can be used in array channels without per-element phase trimming. Capacitance tolerance is ±5% standard (±2% on request), the C-V characteristic is linear from 0 V to 30 V, and the amorphous SiO2 dielectric does not age, so the phase term stays stable over temperature and time.
