MIL-PRF-55365H (1)

Abstract

This specification covers the general requirements for non-established reliability (non-ER), established reliability (ER), and high reliability tantalum dielectric, fixed chip capacitors, primarily intended for use in thick and thin film hybrid circuits or surface mount applications for filter, bypass, coupling, and other applications where the alternating current (ac) component is small compared to the direct current (dc) rated voltage and where supplemental moisture protection is available (see 6.1). The established reliability capacitors have reliability ratings established on the basis of life tests performed at specified voltage at +85&#176;C for failure rate levels (FRL) ranging from: <br>a. 1.0 percent per 1,000 hours to 0.001 percent per 1,000 hours in accordance with MIL-STD-690. These FRL's are established at a 60-percent confidence level and are maintained at a 10-percent producer's risk (exponential distribution). <br>b. 0.1 percent per 1,000 hours to 0.001 percent per 1,000 hours or 1 FIT (FIT = failure unit = one failure per 109 device hours) at 90-percent confidence level (Weibull distribution).<b><u>Intended Use:</u></b> Tantalum chip capacitors are intended to be used in thin or thick film hybrid circuits or surface mount applications where microcircuitry is indicated. These capacitors are not hermetic or moisture proof. These capacitors are military unique due to the fact that they must be able to operate satisfactorily in military systems under 20 Gs of high frequency vibration and extreme temperatures (-55&#176;C to +125&#176;C). These capacitors also offer high reliability that is verified under a qualification system. Commercial components are not designed to withstand these military environmental conditions.<br>