QPL MIL-STD-1553 INTERFACE TRANSFORMERS Pulse Specialty Components Two Pearl Buck Court Bristol, PA 19007-6812 Tel 215-781-6400 n Fax 215-781-6403 www.pulsespecialty.com For non-QPL pulse transformers.... In addition to the QPL transformers described in this catalog, Pulse Specialty Components offers scores of low-power pulse transformer models for commercial, industrial, COTS, and other (non-QPL) military appli- cations. These include: n surface-mount or through-the board n standard profile, low profile, or stacked n single- or dual-ratio n single- or dual-interface For more information, request catalog Non-QPL MIL-STD-1553 Low-Power Pulse TransformersPULSE SPECIALTY COMPONENTS product levels for low power pulse MIL-STD-1553 Interface transformers. The new specifica- Transformers tion allows designers to select a As Technitrol Components QPL device and limit the testing to Division, we were the first to what s needed for the application: achieve QPL status for MIL-STD Contents 1553B interface transformers, also n Level C - for high reliability known as low-power pulse trans- commercial/industrial applications formers. Today, as Pulse n Level M - for general purpose Single ratio Specialty Components, our QPL military applications transformer line includes a wide through-the-board n Level T - for high reliability selection of products for each of critical military applications. QPL pulse transformers....... 4 the product levels called for by MIL-PRF-21038/27, formerly Level C parts are tested to our MIL-T-21038/27. internal specifications. Group A or B testing is not performed on Level We also were the first to achieve C parts. A Level M part is exactly QPL status on surface-mount MIL- Dual ratio the same as the original QPL prod- STD-1553 pulse transformers -- uct that was defined by the earlier through-the-board more than 15 years ago. To this MIL-T-21038/27 specification. A day, many manufacturers have dif- QPL pulse transformers....... 6 Level T part receives the most ficulty producing components that extensive testing along with ther- can survive the high-heat rigors of mal cycling. For more details, see surface mounting and the perform- next page. ance, reliabliability, part-to-part repeatibility, and lifespan required COTS transformers. Dual ratio by high-rel military and commer- cial applications. Several of our QPL transformers surface mount have non-QPL COTS counterparts This catalog covers all of our QPL -- same component layout and QPL pulse transformers....... 8 transformer products. Each part electrical characteristics but has a military designation number theyre built for commercially- (found on DESC/DSCC approved oriented requirements, and manu- drawings) as well as our own prod- factured in higher volume at lower uct number. These part numbers cost. Weve noted where a COTS are listed in the specification counterpart to a QPL product tables. exists with the symbol shown here. About MIL-T-21038/27 and MIL-PRF-21038/27 For more information on COTs MIL-PRF-21038E (8 July 1998) transformers, refer to our non-QPL supersedes MIL-T-21038D (11 transformer catalog. May 1979) and establishes three TWO PEARL BUCK COURT l BRISTOL, PA 19007-6812 l TEL 215-781-6400 l FAX 215-781-6403 l www.pulsespecialty.com QPL Transformers 2