Components and Subsystems

8033-8034 Series Surface Mount Common Mode Chokes

The 8033-8034 Series Surface Mount Common Mode Chokes are for use with LAN and Telecom applications.

Features: 
  • Reduce radiated EMI emissions
  • Filters common mode noise for EMI reduction
  • Common mode attenuation from 100 kHz to 1 GHz
  • 500 Vrms isolation

8020-8028 Series Single Transformers

The 8020-8028 Series Extended Temperature Range SMD Single Transformers meet a variety of requirements listed in the datasheets below.

Features: 
  • Meets the isolation and impedance matching requirements for T1, E1, CEPT and
    PRI ISDN applications
  • Temperature range of -40°C to +85°C

8001-8012 Series Dual Line Interface Module

The 8001-8012 Series Extended Temperature Range SMD Dual Line Interface Module meets a variety of specific requirements, shown on the datasheet below.

Replacements for: 6061 - 6068 and 7001 - 7006.

Features: 
  • United matched to leaving transceiver ICs
  • Meet requirements for T1, E1, CEPT, and PRI ISDN over extended temperature range -40 to +85 degrees C

7526 Surface Mount Common Mode Choke

The 7526 Surface Mount Common Mode Choke is for use with LAN and Telecom applications and is designed to reduce EMI and common mode noise.

Features: 
  • Common mode attenuation for 100 kHz to 300 MHz
  • 1500 Vrms isolation

7444 Series Passive Audio Bandpass Filter

The 7444 series are passive bandpass filters designed for use in signalling, monitoring and supervisory systems where safety is critical and the filter must be stable over the range of temperatures experienced in an unheated, non air-conditioned vehicle exposed to all North American environmental conditions.

Features: 
  • The safety critical design feature provides that if any internal component becomes an open or short circuit, the output signal falls by at least 18 dB below normal.
  • The temperature stability is enhanced by selecting the resonant components such that the temperature coefficient of inductance is the inverse of the temperature coefficient of capacitance.  The components are subjected to prolonged temperature cycling, before tuning, so as to minimize the disaccommodation factor of the ferrite materials.
  • The filters are hermetically sealed in a plated steel can for long life under a wide range of environmental conditions including high relative humidity.
  • All filters will tolerate 350 volts peak-to-peak at out of band frequencies.
  • The filters are PC board mountable with solderable pins in glass to metal seals.  There are four 8-32 threaded inserts for secure mounting when subjected to vibration.

7443 Series Passive Audio Bandpass Filter

The 7443 series are passive bandpass filters which have been designed for safety critical applications.  They are used in signalling, monitoring and supervisory systems where the information is carried by signals, typically in the audio frequency band.  The filters are designed to operate over the range of temperature experienced in a non air-conditioned, unheated vehicle exposed to the temperature extremes found anywhere in North America.

Features: 
  • Safety critical feature provides output signal level falls by at least 18 dB below normal if any internal component becomes shorted or opens
  • Filters are mounted in hermetically sealed steels cans that provide a long life under adverse environmental conditions including high relative humidity.
  • Temperature stability is maximized by prolonged temperature cycling, prior to tuning, to reduce the disaccommodation factor of the ferrite core materials.  Capacitors are selected whose temperature coefficient of capacitance is the inverse of the temperature coefficient of inductance of the coils or transformers.
  • All filters tolerate 350 volts peak-to-peak at frequencies outside the pass band
  • Filters are fitted with an octal plug to make the input and output connections.  The filters have four 8-32 studs to provide secure mounting and withstand vibration.

7439-7440 Series 1000 Base T Dual Port Magnetic Modules

The 7439-7440 Series 1000 Base T Dual Port Magnetic Modules is designed for Ethernet 100/1000 Base-T full duplex applications.

Features: 
  • Supports 4 pairs of category 5 UTP cable
  • Cable interface for isolation and low common mode emissions
  • Compliant with IEEE 802.3ab standard for 1000 Base-T
  • Supports 1:1 Turns Ratio Transceivers
  • Isolation voltage: 1500 Vrms

7431 Input/Output Transformer

The 7431 Input/Output Transformer is designed to interface with the Motorola MC145423 which combines the functionality of the UDLT-1 and UDLT-2.

Features: 
  • Low cost
  • Tape and reel available for high volume production

7398 Coil Suppressor Assembly

The 7398 Coil Suppressor Assembly offers flexible leads for internal mounting across coil and high energy loss in Zener diode assures rapid contact release.

Features: 
  • Fully tested after burn in
  • High resistance to shock and vibration

7390 Hybrid Transformer

The 7390 Hybrid Transformer is designed to be used in a 2-coil hybrid transformer configuration.

Applications:

  • Hybrid interface between the 2-wire loop and the 4-wire circuit, and where DC handling capability is required on the 2-wire side
Features: 
  • Low Insertion Loss
  • High Return Loss
  • DC capability
  • High Transhybrid Loss
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