MNS Microwave Chip Capacitors

Rev. V6

MA4Mxxxx Series

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Features

 Excellent Repeatability

( Wafer-to-Wafer and Lot-to-Lot)

 Small Size

 Low Loss, High Q

 Available with Round or Square Bond Pads

Description and Applications

The 4M series of MNS (metal-nitride-silicon) chip capacitors

is designed specifically for high reliability and repeatable

performance in microwave circuit applications. These ca-

pacitors are made using a low pressure chemical vapor

deposition (LPCVD) that results in dense, uniform nitride

layers. These devices exhibit higher capacitance per unit

area (resulting in smaller chip size) and improved rugged-

ness over similar MOS, MIS and ceramic capacitors.

Evaporated gold contacts are used to provide an easily

bondable metal pad on the capacitor chip. M/A-Com MNS

capacitors have shown no measurable capacitance change

when subjected to the rated standoff voltage at 150

Degrees C.

The MA4M series of chip capacitors is an excellent choice

for use in hybrid microwave circuits up through Ku-band,

where low loss, high reliability, small size and temperature

stability are prime concerns.

These chip capacitors are suited for applications requiring

DC blocks, coupling capacitors, bypass capacitors, capaci-

tive loads and tuning elements in oscillators, multipliers and

filters.

Case Style

Comparison of M/A-COM MNS Capacitors to Ceramic Chip Capacitors

Characteristics Compared

MNS

Ceramic

Operating Temperature Range

-55 Deg C. to + 200 Deg. C.

-55 Deg C. to + 200 Deg. C.

Temperature Coefficient

180 PPM

1000 PPM

Insertion Loss of a 20 pf Capacitor in a 50 Ohm

Line @ 15 GHz

.1 dB

.2 dB

Chip Size

200 pF, 100V

20 pF, 100V

40 x 40 mils

22 x 22 mils

70 x 70 mils

50 x 50 mils