Common Mode Chokes

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AlfaMag has several common mode chokes in standard lines and can custom design a common mode choke to fit your requirements. Common mode chokes provide an efficient means of filtering supply lines having in-phase signals of equal amplitude thus allowing equipment to meet stringent electrical radiation specifications. Differential mode signals can be attenuated substantially when used together with input and output capacitors.

Features include:

Separated windings for minimum capacitance
Meets requirements of EN138100, VDE 0565, part2: 1997-03 and UL1283
Competitive pricing due to high volume production
Fully RoHS compliant

CA Series Common Mode Toroidal Chokes

CA Series common mode toroidal chokes provide an efficient means of filtering supply lines having in-phase signals of equal amplitude thus allowing equipment to meet stringent electrical radiation specifications. Wide frequency ranges can be filtered by using high and low inductance Common Mode toroids in series. Differential mode signals can be attenuated substantially when used together with input and output capacitors.

CA Series Common Mode Toroidal Chokes

Features

Separated windings for minimum capacitance
Meets requitements of EN138100, VDE 0565, part2: 1997-03 and UL1283
Competitive pricing due to high volume production
Fully RoHS compliant

CCJ Series Compact SMD Common Mode Chokes

CCJ Series Compact Double and Quad Chokes for Data and Signal Line EMI Suppression

Features

Low cost, compact SMD for pick and place compatability while providing consistent and reliable coplanarity
High attenuation over a wide frequency range
Other inductance values available upon request

Electrical Specifications

Ratings @ 25°C ambient
Operating Temperature: 0 to 70°C
Storage Temperature: -25° to +105°C

CD & CQ Series CM Interface Chokes for Data and Signal Lines

CD & CQ Series Interface for Data and Signal Lines

Features

High attenuation over a wide frequency range
Low interwinding and coupling capacitance
Wide inductance range
Excellent quality at extremely competitive price due to high volume production
Other inductance values available upon request
Fully RoHS compliant and meets lead free reflow level J-STD-020C

CLJ-2 Series Miniature SMD Common Mode Double Chokes

CLJ-2 series Miniature SMD Common Mode Double Chokes

Features

Miniature, low cost SMD for pick and place compatability while providing consistent and reliable coplanarity
Other inductance values, higher current ratings and special types for operation at 150°C ambient are available upon request
High attenuation over a wide frequency range - CAN bus types to 500MHz
Available in Bifilar and Sector (Suffix S) winding
Materials: UL94-VO
Fully RoHS compliant and meets lead free reflow level J-STD-020C

CMJ Series SMD Miniature Common Mode Chokes

Features

Miniature, low cost SMD for pick and place compatability while providing consistent and reliable coplanarity
High attenuation over a wide frequency range
Manufactured in ISO-9001 approved facility
Other inductance values available

Electrical Specifications

Ratings at 25°C ambient
Operating Temperature: 0 to 70°C
Storage Temperature: -25° to +105°C

COJ Series - Common Mode Octal Chokes for Quad Port T1 E1

COJ Octal Common Mode Chokes for Data and Signal Line EMI Noise Suppression

Features

Low profile (6.0mm) and light weight (4.0 g), common mode choke modules provide excellent EMI reduction in Quad Port T1/E1 applications
High density board placement with modular design
SMD package facilitates pick and place compatability while ensuring consistent and reliable coplanarity
fully RoHS compliant and meets lead free reflow level J-STD-020C

Electrical Specifications @ 25°C

Nominal Voltage: 42Vac (50/60Hz), 80Vdc
Operating Temperature: -25° to +85°C
Storage Temperature: -40° to +125°C
Climatic category: according to IEC68-1 25/85/56
Test voltage between windings: 500 Vrms
Test Frequency: Inductance measured @ 100kHz/20mVrms

Contact our qualified experts today when you're ready to place an order, or dial 1-800-413-6693 to receive a detailed quote for your high frequency magnetic components.