SBSPP1000682MXB

Current:	1A
Height:	0.071" (1.80mm)
Size / Dimension:	0.126" L x 0.065" W (3.20mm x 1.65mm)
Package / Case:	1206 (3216 Metric), 3 PC Pad
Mounting Type:	Surface Mount
Voltage - Rated:	100V
Applications:	General Purpose
Operating Temperature:	--
ESD Protection:	No
Values:	C = 6800pF
Series:	SBSP
Resistance - Channel (Ohms):	--
Attenuation Value:	37dB @ 100MHz
Center / Cutoff Frequency:	--
Number of Channels:	1
Technology:	LC (Pi)
Filter Order:	3rd
Type:	Low Pass
Part Status:	Active

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Introduction of EMI/RFI Filters (LC, RC Networks)

EMI/RFI filters, with the basic component design of a series inductor (L) and shunt capacitor (C), are used to reduce electromagnetic and radio frequency interference (EMI/RFI) between two electrical circuits. The L and C elements are arranged in a network, commonly known as a LC filter, or in a more sophisticated network consisting of additional inductors and capacitors, called an RC filter.

SBSPP1000682MXB Application Field and Working Principle

The application field of SBSPP1000682MXB is in the reduction of conducted common mode (CM) and differential mode (DM) EMI/RFI interference, and it is comprised of two parts; the EMI common mode chip filter and the EMI differential mode chip filter.The high frequency common mode filter of SBSPP1000682MXB consists of two series inductors (L1 and L2) and two shunt capacitors (C1 and C2) connected in a LC network. The combination of L1 and C1, and the combination of L2 and C2, act as two different low-pass filters, providing a effective common mode filtering. The differential mode filter is composed of C3 and C4 configure as a low-pass RC filter.The series inductors, L1 and L2, limit currents from the input to the output, blocking interference from high-frequency common mode (CM) sources. The shunt capacitors, C1 and C2 provide a low impedance path for such interference at the design frequency, thus limiting the amount of interference that reaches the output. C3 and C4 act as impedance elements on the differential mode conduction path, blocking interference picked up by the leads -- such as differential mode noise from power sources -- from reaching the output. The filter is designed for a very specific cut off frequency, above which high frequency noise currents are attenuated, while the low frequency signals are allowed to pass.

Conclusion

SBSPP1000682MXB is a type of high quality EMI/RFI filter which can provide excellent performance in reducing conducted EMI/RFI interference. It consists of two parts; a common mode filter and a differential mode filter which work together to provide effective reduction of high frequency noise currents. The filter has a very specific cut-off frequency, so that it offers a high level of attenuation of high frequency noise while allowing low frequency signals to pass. This makes it suitable for a variety of applications, such as digital control systems where effective filtering of interference is essential.

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