Radio Interference Suppression Capacitor

Radio Interference Suppression Capacitor Function
One of the most enduring trends in the electronics industry is miniaturization. Improvements in semiconductor technology have emphasized reducing the size of electronic components, while also requiring significant improvements in their performance. Smartphones, wearables and tablets are just a few of the many devices that utilize the latest semiconductor technology. However, as electronic devices and equipment shrink in size and become more compact, reliability becomes an important issue, and how to suppress the effects of electrical noise or interference becomes a challenge. Therefore, suppression capacitors play a more important role in the electronics industry.

Specifications of radio interference suppression capacitor:

Dielectric: Polypropylene film

Electrodes: Vacuum evaporated metal

Coating: Encapsulated in reinforced flame retardant plastic case sealed with epoxy resin meeting the requirement of UL94V-0.

Leads: Radial leads of tinned wire/ insulation flexible wire

Reference standard: IEC 60384-14 (3nd Edition,2005) UL1414,UL1283,GB/T 14472-1998,EN60384-14

Climatic catalogue: 40/100/21 (GMF)

Capacitance versus rated voltage:

0.001µF-4.7µF/275VAC (50/60Hz)

0.001µF-4.7µF/310VAC (50/60Hz), (UL)

Capacitance tolerance: M ±20% K ± 10% J ± 5%

Dissipation factor (tangent of loss): ≤0.1％ (at 20℃ , 1KHz)

Voltage-proof:

4.3*UR Unit VDC (1minute at 20℃ )

Insulation resistance:

C ≤0.33μF, IR ≥15,000mΩ, C>0.33μF, IR*C≥5000S (1 minute at 20 and RH≤65%)

Feature of Radio interference suppression capacitor

As components and devices shrink in size and become more compact, suppressing the effects of electrical noise or interference becomes a challenge. Correct adio interference suppression capacitor selection can help achieve suppression solutions. Suppression capacitors based on metallized polypropylene film technology offer unique advantages. In addition, it is also necessary to consider meeting the THB test requirements and passing the moisture resistance test, because this is an important indicator to ensure that the capacitor still has high reliability performance in harsh environments. 

Application

1.Line-by-pass and Antenna coupling
2.Across-the-line, spark killer
3. FMI filter
4. Switching power supply