Although DLW5BTM142SQ2, used to suppress the radiated emission, has a compact size with a low profile of 5 × 5mm (t=0.235mm/max), it has the common mode impedance of 530Ω and 1650Ω at 30MHz and 100MHz respectively as indicated in Fig. 6, showing an excellent capability of noise suppression in the frequency band where countermeasures against the radiated emission are necessary.
Similarly, DLW5BTM251SQ2, which we recommend as a countermeasure against the receiver sensitivity suppression in wireless communication, has a compact size with a low profile of 5 × 5mm (t=0.235mm/max). However, it has a high rated current of 5A and the common mode impedance of 400Ω and 200Ω at 200MHz and 1000MHz respectively as indicated in Fig. 6, showing an excellent capability of noise suppression in all the frequency bands where countermeasures against the receiver sensitivity suppression are necessary.
LLL185R71H222MA01, used as an X- and a Y-capacitor, is a low ESL capacitor, called an LW reverse-type capacitor. Although it has a compact size with a low profile of 0.8 × 1.6mm (t=0.5mm), it maintains low impedance characteristics up to high frequency, with the impedance of 0.30Ω and 0.55Ω at 200MHz and 1000MHz respectively as indicated in Fig. 7. It shows an excellent capability of noise suppression in all the frequency bands where countermeasures against the receiver sensitivity suppression are necessary.
As described above, using the noise suppression components suitable to the types and frequencies of the noise that you want to suppress, you will be able to solve the noise problems in wireless power supply.