MIL-PRF-28861B (AMENDMENT 4), PERFORMANCE SPECIFICATION: FILTERS AND CAPACITORS, RADIO FREQUENCY/ELECTROMAGNETIC INTERFERENCE SUPPRESSION, GENERAL SPECIFICATION FOR (11 SEP 1998)., This amendment forms a part of MIL-PRF-28861B, dated 31 January 1994, and is approved for use by all Departments and Agencies of the Department of Defense.