ABSTRACT: TR-NWT-000930 presents the Telcordia view of generic requirements for hybrid microcircuits that are, in the opinion of Telcordia, currently appropriate for products and equipment used in the network of a typical local exchange carrier (LEC), or other service provider. Hybrid microcircuits used in telecommunications are generally an equipment supplier's proprietary technology, with few industry-recognized standards to establish common practices and tests necessary to help ensure their quality and reliability.

This document outlines the Telcordia view of a proposed minimum set of such criteria. For the purpose of this document, a hybrid microcircuit is defined as an insulating substrate on which is deposited passive film circuitry, and to which may be attached active and passive electronic components. The term is used interchangeably with hybrid circuit, and where active devices are attached, with hybrid integrated circuit (HIC).

This document limits discussion of hybrid microcircuits to electronic assemblies based on ceramic alumina substrates, with passive circuitry applied to the substrates to include thin-and thick-film conductors, resistors, and dielectrics.

Major topics include reliability-oriented requirements for materials and finishes, film circuits, applied components, module assembly, and finished hybrids.

This document replaced TA-TSY-000930.

When using TR-NWT-000930, you may need to refer to GR-63, GR-78, GR-326, GR-357, GR-468 (replaced TA-TSY-000983 as well as TR-NWT-000468), GR-1217, GR-1221, and/or SR-NWT-2759 (replaced TR-TSY-000081).

You may also want to refer to SR-332, TR-NWT-000870, GR-1089, and/or various MIL-STD, ASTM, and other test methods.