Polymer tantalum chip capacitors improve frequency response

Vishay Intertechnology has extended its T55 series of vPolyTan surface-mount polymer tantalum moulded chip capacitors. The company has introduced devices in the D case (EIA 7343-31) size featuring single-digit ESR values from 9.0 to 7.0 mOhm, with values to 6.0 mOhm in development.

Previously reserved for larger case sizes, the single-digit ESR values of the capacitors released today are 3.0 to 5.0 mOhm lower than those typically found in D case devices. The results are reduced voltage drops, better frequency response, and higher ripple current ratings up to 5.67A IRMS, which reduces the number of capacitors required on the PCB, reports Vishay. In addition to board space savings, the D case’s low 3.1 mm profile enables the design of thinner end products.

The T55 series is offered in the compact J, P, A, B, T (low-profile B is 1.2mm max), D, V, and Z case sizes. The capacitors have a wide capacitance range of 3.3 to 1,000 microF over voltage ratings from 2.5 to 63V. Capacitance tolerance is ± 20 per cent. The devices are optimised for power management, battery decoupling, and energy storage in computers, servers, network infrastructure equipment, solid state drives and wireless transceivers.

Operating over a temperature range of -55 to +105 degrees C, the capacitors provide low internal resistance for enhanced charge and discharge characteristics. They have lead (Pb)-free terminations, are RoHS-compliant and halogen-free.

The devices are compatible with high volume automatic pick and place equipment and offer a Moisture Sensitivity Level (MSL) of 3.

Samples and production quantities of the new single-digit ESR capacitors are available now, with lead times of 14 to 16 weeks

Vishay Intertechnology manufactures discrete semiconductors (diodes, MOSFETs, and infrared optoelectronics) and passive electronic components (resistors, inductors, and capacitors) used in virtually all types of electronic devices and equipment, in the industrial, computing, automotive, consumer, telecommunications, military, aerospace, power supplies, and medical markets.


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