General Multilayer organic dielectrics cut absorption in capacitors

General Multilayer organic dielectrics cut absorption in capacitors

2013/10/28

AVX has published a technical paper, “Dielectric absorption of multilayer organic (MLO) capacitors,” which it claims shows its MLO capacitors exhibit the lowest dielectric absorption (DA) of any comparable technology.

This is important when used in the design of sample and hold (S/H) circuits. During the hold time of S/H circuits, the voltage across the capacitor is assumed to be a specified, predetermined number.

However, due to variances in dielectric absorption, that may not be the case, which could make the circuit vulnerable to voltage errors.

Dielectric absorption measurements recorded during tests based on MIL-C-19778 indicate that the MLO capacitors exhibit 0.0015% DA.

“Thanks to AVX’s proprietary MLO materials technology, our MLO capacitors have been shown to exhibit exceptionally low DA far below that of many other dielectric technologies, which makes them particularly well suited for sample and hold circuits, in which DA can cause errors at the output,” said Edgardo Menendez, field application engineer at AVX.

AVX’s MLO capacitors are expansion matched to most FR4 PCBs and are available with ratings up to 500V.

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