Input filtering
EMC input filter requirements include limitation of conducted and radiated emissions, immunity to transients and surges on the power lines, and immunity to levels of external electromagnetic radiation and electrostatic discharge. A combination of EMI filters, line filter capacitors (X and Y) and common-mode chokes combat the effect of common-mode noise produced by the power supply and prevents it from flowing back to the mains line.

EMI filters
Product Type | Series | Technical Data | Datasheet | Features Overview |
---|---|---|---|---|
EMI Filter | B84142A**166 |
|
Download |
|
EMI Filter | B84143A**166 |
|
Download |
|
EMI Filter | B84143A*R107 |
|
Download |
|
EMI Filter |
B84143A*R106 |
|
|
|
EMI Filter |
B84143A*R105 |
|
|
|
EMI Filter |
B84143D*R127 |
|
|
|
EMI Filter |
B84143B*S* |
|
|
|
EMI Filter |
B84243A |
|
|
X caps
Product Type | Series | Technical Data | Datasheet | Features Overview |
---|---|---|---|---|
X Caps | B3292xC/D |
|
Download |
|
X Caps | B3292xH/J |
|
Download |
|
X Caps | B3293x |
|
Download |
|
X Caps |
B3291xA3 |
|
|
|
X Caps |
B3291xA5 |
|
|
|
X Caps |
CD |
|
|
|
X Caps |
CS |
|
|
|
X Caps |
B3236* |
|
|
Y caps
Product Type | Series | Technical Data | Datasheet | Features Overview |
---|---|---|---|---|
Y Caps | B3202x |
|
Download |
|
Y Caps | B81123 |
|
Download |
|
Y Caps | CD |
|
Download |
|
Y Caps |
CS |
|
|
Chokes / ferrite cores
Product Type | Series | Technical Data | Datasheet | Features Overview |
---|---|---|---|---|
Ferrite Core | B64290L |
|
Download |
|
Line Reactor/Choke | B86305L |
|
Download |
|
Power Line Choke | B82745S/B82746S Ring core based |
|
Download |
|
Power Line Choke | B82747S Ring core based |
|
Download |
|
Power Line Choke | B82748F Ring core based |
|
Download |
|
Power Line Choke | B82748S Ring core based |
|
Download |
|
Power Line Choke | B82791G/H Ring core based |
|
Download |
|
Power Line Choke | B82720A/K Ring core based |
|
Download |
|
Power Line Choke | B82720S SMT Technology |
|
Download |
|
Power Line Choke | B82721A/J/K Ring core based |
|
Download |
|
Power Line Choke | B82722A/J Ring core based |
|
Download |
|
Power Line Choke | B82723A/J Ring core based |
|
Download |
|
Power Line Choke | B82724A/B/J Ring core based |
|
Download |
|
Power Line Choke | B82725A/J/S Ring core based |
|
Download |
|
Power Line Choke | B82726S Ring core based |
|
Download |
|
Power Line Choke | B82732F |
|
Download |
|
Power Line Choke | B82733F/V |
|
Download |
|
Power Line Choke | B82731T |
|
Download |
|
Power Line Choke | B82730U |
|
Download |
|
Power Line Choke | B82731H/M |
|
Download |
|
Power Line Choke | B82732W/R |
|
Download |
|
Power Line Choke | B82734W/R |
|
Download |
|
Power Line Choke | B82559*A13 |
|
Download |
|
Power Line Choke | B82559*A19 |
|
Download |
|
Power Line Choke | B82559*A20 |
|
Download |
|
Power Line Choke | B82559*A25 |
|
Download |
|
Leakage-current compensation
Product Type | Series | Technical Data | Datasheet | Features Overview |
---|---|---|---|---|
Leakage-Current Compensation | LeaXield |
|
Download |
|
Engineering Services
Ask an expert
Have a question? Our regional technical specialists are on hand to help

Inverters and drives brochure
Avnet Abacus offers a comprehensive portfolio of EPCOS and TDK branded products for state-of-the-art inverter and drive design

Protection
Thermistors acting as inrush current limiters are a low cost solution to this problem whilst input varistors are used to provide surge protection against voltage spikes on the input.
Learn MoreRectification
Each AC input phase is rectified by 3 diodes (top diode in the positive direction and the low side diode of the other two phases) so that the peak of the negative half cycle appears positive.
Learn MoreDC-Link
A DC-link capacitor is fitted at this point to provide a low impedance path for high frequency switching currents and to provide energy storage.
Learn MoreConversion
At the conversion stage of a variable frequency drive, the DC voltage is converted into an AC voltage at a given but variable voltage and frequency to drive the motor.
Learn MoreThermal management
In a drive, the heatsink’s role is to cool the semiconductors and DC link capacitors and prevent overheating.
Learn MoreDriver and controller
The Control and Feedback stages analyse signals from the current sensors mounted at the motor output, measure the temperature of sensors and control the driver for the conversion semiconductors.
Learn MoreOutput filtering
The output stage of a drive takes a three-phase AC output with variable frequency and amplitude for fine speed and torque control and filters it to minimise EMI and provide reliable operation of the power converter and load.
Learn More