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EMI Input Filter Modules

The QPI family of active EMI filters provides conducted common-mode (CM) and differential-mode (DM) attenuation from 150kHz to 30MHz (CISPR22 range). The proprietary active-filtering circuit provides superior attenuation at low frequencies intended to support EN Class B limits, including PICMG 3.0 for ATCA boards. In comparison to passive solutions, the use of active filtering reduces the volume of the common-mode choke, providing a low-profile, surface-mount device. Smaller size saves valuable board real estate and the reduced height enhances airflow in blade applications. The MQPI-18 attenuates conducted common-mode (CM) and differential-mode (DM) noise for 28V input MIL PRMs to comply with MIL-STD-461F EMI requirements for conducted noise measurements. The filter operates within the full input operating range of a 28V MIL PRM and supports 7A loads up to 85°C (TA) without de-rating.

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Filter Products

0 Products
0 Products
Part Number Data Sheet Input (V) Current (A) Test Freq. (kHz) CM Attenuation (dB) HIPot (V) Package (mm) Add to cart / view details
QPI-21LZ
Part Number: QPI-21LZ Data Sheet:
Input (V):
30 – 80
Current (A):
14
Test Freq. (kHz):
250
CM Attenuation (dB):
45
HIPot (V):
1,500
Package (mm):
LGA
View details
QPI-21LZ-01
Part Number: QPI-21LZ-01 Data Sheet:
Input (V):
30 – 80
Current (A):
14
Test Freq. (kHz):
250
CM Attenuation (dB):
45
HIPot (V):
1,500
Package (mm):
Open Frame
View details
QPI-12LZ
Part Number: QPI-12LZ Data Sheet:
Input (V):
5.0 – 80
Current (A):
7
Test Freq. (kHz):
1,000
CM Attenuation (dB):
40
HIPot (V):
1,500
Package (mm):
LGA
View details
QPI-12LZ-01
Part Number: QPI-12LZ-01 Data Sheet:
Input (V):
5.0 – 80
Current (A):
7
Test Freq. (kHz):
1,000
CM Attenuation (dB):
40
HIPot (V):
1,500
Package (mm):
Open Frame
View details
QPI-11LZ
Part Number: QPI-11LZ Data Sheet:
Input (V):
5.0 – 50
Current (A):
7
Test Freq. (kHz):
1,000
CM Attenuation (dB):
60
HIPot (V):
707
Package (mm):
LGA
View details
QPI-11LZ-01
Part Number: QPI-11LZ-01 Data Sheet:
Input (V):
5.0 – 50
Current (A):
7
Test Freq. (kHz):
1,000
CM Attenuation (dB):
60
HIPot (V):
707
Package (mm):
Open Frame
View details
QPI-6LZ
Part Number: QPI-6LZ Data Sheet:
Input (V):
30 – 80
Current (A):
14
Test Freq. (kHz):
250
CM Attenuation (dB):
40
HIPot (V):
1,500
Package (mm):
LGA
View details
QPI-6LZ-01
Part Number: QPI-6LZ-01 Data Sheet:
Input (V):
30 – 80
Current (A):
14
Test Freq. (kHz):
250
CM Attenuation (dB):
40
HIPot (V):
1,500
Package (mm):
Open Frame
View details
QPI-5LZ
Part Number: QPI-5LZ Data Sheet:
Input (V):
10 – 40
Current (A):
14
Test Freq. (kHz):
250
CM Attenuation (dB):
60
HIPot (V):
707
Package (mm):
LGA
View details
QPI-5LZ-01
Part Number: QPI-5LZ-01 Data Sheet:
Input (V):
10 – 40
Current (A):
14
Test Freq. (kHz):
250
CM Attenuation (dB):
60
HIPot (V):
707
Package (mm):
Open Frame
View details
QPI-3LZ
Part Number: QPI-3LZ Data Sheet:
Input (V):
10 – 40
Current (A):
7
Test Freq. (kHz):
250
CM Attenuation (dB):
65
HIPot (V):
707
Package (mm):
LGA
View details
QPI-3LZ-01
Part Number: QPI-3LZ-01 Data Sheet:
Input (V):
10 – 40
Current (A):
7
Test Freq. (kHz):
250
CM Attenuation (dB):
65
HIPot (V):
707
Package (mm):
Open Frame
View details
MQPI-18LP
Part Number: MQPI-18LP Data Sheet:
Input (V):
5.0 – 50
Current (A):
7
Test Freq. (kHz):
1,000
CM Attenuation (dB):
45
HIPot (V):
1,500
Package (mm):
LGA
View details
MQPI-18LP-01
Part Number: MQPI-18LP-01 Data Sheet:
Input (V):
5.0 – 50
Current (A):
7
Test Freq. (kHz):
1,000
CM Attenuation (dB):
45
HIPot (V):
1,500
Package (mm):
Open Frame
View details

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Input specifications

Min input: Minimum input:
Nom input: Nominal input:
Max input: Maximum input:

Output specifications

Output
Min output: Minimum output:
Nom output: Nominal output:
Max output: Maximum output:
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Features and Benefits

Features and benefits

Provides conducted common-mode

Provides conducted common-mode (CM) and differential-mode (DM) attenuation from 150kHz to 30MHz (CISPR22 range) 

Optimized for applications that require EN55022 Class B limits 

Optimized for applications that require EN55022 Class B limits 

Nominal input voltages 

12, 24 & 48V nominal input voltages 

Saves up to 50% board space vs. standard filters 

Saves up to 50% board space vs. standard filters 

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