TEA-4214 Series Matching Transformer

TEA-4214 is a wide band matching transformer operating in two impedance configurations. The 4214 is mainly used as Line Matching and Bridging Transformer.  Windings connected in parallel for lower impedances ( 100 to 150 Ω) and connected in series for higher impedances ( 600 to 900 Ω).

  • Very wide band
  • Low insertion loss
  • Low bridging loss

4175-4177 Series Bandpass Filters

Bandpass Filters designed for high frequency communications equipment where high
stability over a wide temperature range is mandatory.


  • ± 4° phase match between filters
  • Small size
  • Low cost

TEW-4087 Series Matching Transformer

The TEW-4087 transformer was designed to provide matching between a coax cable and a twisted pair.

  • Based on the Ethernet data link protocol
  • Uses baseband signaling at 10Mbps

TLA-4032 Series Matching Line Transformer

TLA-4032 is a 1 : 1 line matching transformer. Line matching in 600 & 900 Ω circuits where DC loop current capability and high voltage insulation are required.

  • Low profile
  • DC loop current capability
  • Conforms to FCC part 68, Canadian CS 03, British BS 6305 and Australian regulations
  • High voltage insulation between input and output windings

3858-X Series Line Coupling/Bridge Transfomer

3858 is a 1:1 line matching transformer. Interfacing equipment to telephone line, requiring small size and high insulation voltage.
3858-2 is designed for high impedance bridging applications.

  • Low profile
  • Small volume
  • Conforming to FCC part 68, Canadian CS 03 regulations
  • Low cost
  • High insulation voltage

3853-X Series Line Matching Transformer

3853 is a 1:1 line matching transformer. Line matching in 600 & 900 Ω circuits with up to 100 mA loop current capability.

  • Low profile
  • DC loop current capability
  • Conforms to FCC part 68, Canadian CS 03 regulations
  • High voltage insulation between input and output windings

TPW 3852 Series Input/Output Transformer

The 4 wire interface between Subscriber Terminals and the Network Termination has been standardized by CCITT recommendation I.430. It uses a passive bus which provides separate receive and transmit loops operating at 192 Kbits/s.


Two versions of TPW3852 have been designed and approved for use with the following devices:


  • Siemens PEB2080
  • Siemens PEB2081
  • Siemens PEB2085
  • Siemens PEB2086
  • AMD Am79C30A


  • Mitel MT8930A, -B, -C
  • Mitel   MT8931B, -C

3817 Series Line Matching Transformer

3817 is a 1 : 1 line matching transformer. Interfacing of telecommunications equipment to 600W or 900W lines.

  • Low profile
  • Conforming to FCC part 68 and CS 03 regulations
  • Low bridging and insertion losses
  • Low cost

Superior Tuning Capability Highlighted in API™ Tunable Filter: 30-90MHz Digitally Tuned Bandpass Filter Released Today

WINDBER, PA —MARCH 15, 2011 — API Defense, a provider of highly engineered systems, sub-systems and secure communications to the global defense and aerospace industries, today announced the release of the API™ Tunable Filter. The API Tunable Filter is a 30-90MHz bandpass filter that delivers highly precise tuning capabilities. The product’s rugged but lightweight design makes it ideally suited for use in military radios and mobile applications.

“We are pleased to deliver another product that further enhances warfighers’ communication capabilities,” said Jim Fisher, Director of Engineering for API Defense. “Used either out in the field or in a test environment, the API Tunable Filter offers the speed and accuracy necessary to meet mission requirements.”

TLA-3700 Series Line Matching Transformer

TLA-3700 is a 1 : 1 line matching transformer.

Applications:  Line matching in 600 W circuits, where up to 100mA loop current capability is required.

  • Low cost.
  • DC loop current capability.
  • Conforming to FCC part 68 and Canadian CS 03 regulations.
  • High voltage insulation between input and output windings.
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