Triad produces a wide assortment of audio transformers for use in printed circuit designs. These transformers fill a broad application spectrum in the audio industry. Triad audio printed circuit transformers are used in line matching, telephone coupling, pulse trigger, interstage, output, isolation and input applications.
Unit of Measure

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Frequency Response Range

N/A 20 to 20000 Hz

Impedance Matching

N/A 10% over Frequency Range

Output Power

N/A 20 mW

Primary Impedance

N/A 1000 Ohm

Secondary Impedance

N/A 250 Ohm1000 Ohm

Primary Unbalanced DC Current

N/A 4 mA

Dimension (H)

N/A 0.700 in

Dimension (W)

N/A 0.900 in

Dimension (L)

N/A 0.770 in

Dimension (A)

N/A 0.200 in

Dimension (B)

N/A 0.520 in

Dimension (C)

N/A 0.200 in

Dimension (D)

N/A 0.150 in

Dimension (J)

N/A 0.025 in


N/A 0.40 oz

Transformer Contact Type

N/A Center Tap Split Secondary

Power Level

N/A 20 mW


N/A Input Interstage Isolation Line Matching Output Pulse Trigger Telephone Coupling

Technical Notes


  1. Plug-in terminals are spaced to provide fixed mounting centers.


N/A For Secondary Impedance - 600: 600 ohm, 10 K: 10 Kohm, 100 K: 100 Kohm, 1 M: 1 Mohm, and other impedances are optional as long as input voltage is ≤4.2 Vrms and current is ≤7 mA.