ARINC 404 connectors and the Military equivalent MIL-DTL-81659 are a long time standard in both military and commercial aviation LRU’s. These connectors come in 4 sizes that can hold up to 424 individual contacts. Amphenol ACC is the world leader in the filtering of this series and has many capabilities to meet our customers varied requirements. This includes, but is not limited to, Pi, C, LC, T filters as well as the addition of transient suppression diodes to allow for the successful EMC test requirements of DO-160.