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Features of Triple Insulated Wire TEX-E


Triple Insulated Wires "TEX-E Series" have a prominent feature: no need of interlayer insulation tape or barrier tape between the primary and secondary coils of a transformer. This positive feature of TEX-E serves to downsize switching transformers, and promises high production efficiency and cost reduction. "TEX-E Series Wires" paves the way to the design of the most modern switching transformers.

Comparison with the conventional transformer

The insulation layers are the secret of TEX-E.

Unlike enameled wires, 3 layers of insulation of patented design are extruded over the copper conductor. IEC60950 requires some Reinforced Insulation between the primary and secondary coils. Thus enamelled wire transformers can never omit the insulation tape or barrier tape: enamel coatings give poor electric insulation. In contrast, TEX-E can form primary and secondary coils without a need of barrier tape or interlayer tape in-between. Each TEX-E wire is equipped with a three-fold insulation around the conductor, which has been authorized as Reinforced Insulation. As a result, the creepage distance can never be limited and no insulation barrier is needed, when specifying distances between termination pins and coils.

A structure comparison figure with the conventional transformer

Item Conventional TEX-E applied
Output 20W 20W
Volume cm3 36 19
% 100 53
Weight g 70 45
% 100 64

  1. Certified as Reinforced Insulation; tree layers can resist up to 3,000 ACV for one minute.
  2. Falling into Thermal Resistance A(105C) to E(120C) Click "Proof of Safety & Reliability" for higher temp conditions.
  3. Soldered without any surface layer bared (stripped).
  4. Smoothly coiled by automatic coiling machines.
  5. Offering a wide size choice of 0.2 to 1.0mm (conductor diameter).

TEX-E has been in the market for more than 12 years. Today we have more than 2,500 TEX-E customers over the world, as a proof of the safe and steady performance of our wire products (TEX-E Wires). Their applications cover most switching transformers, information & telecommunications equipment, game machines, consumer goods, inverters and other similar devices.
Applied Commercial Devices & Instruments
SMPS for units of Printer, Facsimile, Memory, Computer, Monitor, Inverter,
Game Machine
Battery Charger for assemblies of Digital Camera, Portable Telephone, 8mm VCR
AC Adapter, Personal Computer, DVD
Operating Frequencies: Typically 85 kHz to 200kHz but level with a maximum of

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Triple Insulated Wire
Class B Insulated Wire

Supplementary Insulation Winding Wire

Basic Insulated WInding Wire