EMI Input Filter Modules

Active EMI 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.

Data Sheets

Features and benefits

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

12, 24 & 48V nominal input voltages

Saves up to 50% board space vs. standard filters

Select a QPI

0 Products

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