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SMD Telecoil TC0502

SMD Telecoil TC0502

Product catalog summary

Overview: The document describes a new design of a telecoil, specifically the TC0502 model, which is characterized by its small size, high sensitivity, and suitability for hearing aid devices. The telecoil features a stable ferrite core and is wound with thin copper wire, offering inductance values ranging from 40 to 270 mH.

Specifications: The telecoil has a compact size of 5.1 x 2.3 x 2.4 mm and operates effectively in the low-frequency range of 20-40 kHz. It is designed for SMD mounting and can be customized to meet specific electrical requirements of hearing aid manufacturers.

Electrical Characteristics: The document provides a reference guide for common values at a working frequency of 1 kHz. Key specifications include:

Inductance (L) values: 40 mH, 140 mH, 170 mH, and 270 mH with a tolerance of ±5%.
DC resistance (Rdc) ranging from 0.6 KΩ to 4.2 KΩ.
Self-resonant frequency (SRF) greater than 70 kHz.
Sensitivity measured in mVpp/App/m at 1 kHz, ranging from 0.66 to 1.76.

Applications: The telecoil is primarily used in hearing aid devices due to its high sensitivity and stable performance across various frequencies and temperatures.

Dimensions and Layout: The recommended pad layout is provided for optimal mounting and integration into electronic devices.

Catalog excerpts

RECOMMENDED PAD-LAYOUT FEATURES This new design is coil with a very stable and high quality ferrite core and tiny size (5.1 x 2.3 x 2.4mm) and high sensitivity in low frequency range (20-40kHz). Those pieces are winding with thin copper wire up to12μm and its inductances range is 40-270mH. Besides, it has good frequency and temperature behaviour and can be served with “custom” electrics characteristics according requirements of hearing aid devices manufacturers. CHARACTERISTICS >> Small size >> High sensitivity >> SMD mounting ELECTRICAL SPECIFICATIONS This chart is a reference guide for the most common required values at working frequency of 1KHz. Any other inductance value at LF or tighter tolerances can be provided. Please contact our sales department for any inquiry. Sensitivity measured with Helmholtz coils H=6.34 App/m @1 kHz. Contact us for measurement specification. Metallization: Ag(Base)/Ni(inter)/Sn(Finish)

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