JACKS AND PLUGS JACK SCHEMATICS FAX: 773 792-2129 79 JACK SCHEMATICS Military Identification: Military specifications covering phone jacks use a special code to describe jack functions. Jack schematic descriptions are coded J-1 through J-13 (as appropriate) to coincide with Federal Item Identification Guides for Supply Cataloging. One or more groups of suffix numbers/letters identify isolated switching circuits used. Suffixes identify the switching by industry recognized notation, i.e., 1-A, 1-B, 1-C, 1-D, etc. See chart below. Notation Meaning 1-A One, SPST switching circuit. Also known as NO (normally open) or "make" circuit. 1-B One, SPST switching circuit. Also known as NC (normally closed) or "break" circuit. 1-C One, SPDT switching circuit. Also known as transfer or "break" before "make" circuit. 1-D One, SPDT switching circuit. Also known as "make" before "break" circuit. NOTE: Number indicates the quantity of circuit - 2-A means 2, A circuits. Terminals locations shown on jack schematics do not necessarily coincide with physical locations on jacks. Not all circuit types available on all jacks. Single open circuit. (J1.) Single closed circuit, sleeve common. (J3). Single closed circuit. (J4). Double open circuit. (J2). Single open circuit. Isolated switching "make" circuit. (J1-1-A). Transfer circuit. (J5). Tip closed, ring open. (J10). Tip closed, ring open (common to sleeve). (J6). Single open circuit. Isolated switching "break" circuit. (J1-1B). Double closed circuit, ring common to sleeve. (J13). Single closed. Isolated switching "make" circuit. (J4-1A). Double closed circuit. (J7). Single closed circuit. Isolated switching transfer circuit. (J4-1C). Double closed circuit. Isolated switching "break" circuit. (J7-1B). Double open circuit. Isolated switching transfer circuit. (J2-1C). Double open circuit. Isolated switching- separate "break" and make circuits (J2-1A-1B). Single closed circuit Isolated switching "break" circuit. (J4-1B). Single closed circuit- "make" before "break". (J8). Single open circuit. Isolated switching transfer circuit. (J1-1C). Double open circuit. Isolated switching "make" circuit. (J2-1A). Double open circuit. Isolated switching- separate "make" circuits on both tip and ring. (J2-2A). Double closed circuit. Isolated switching "make" circuit on ring spring. (J7-1A). Single closed circuit plus "make" before "break". Isolated switching-"make" before "break" circuit. (J8-1D). Single open circuit. Isolated switching- separate transfer and "make" circuits. (J1-1A-1C). Single closed circuit. Isolated switching "break" circuit. Sleeve common to isolated switching circuit throw. (J4-1B). DIMENSIONS ARE FOR REFERENCE ONLY Inch (mm) SWITCHCRAFT, INC. 5555 N. Elston Ave. * Chicago, IL 60630 JACKS AND PLUGS Circuit Types: Jacks normally have through circuits, shunt circuits, and/or isolated switching circuits, either individually or in various combinations. The chart below shows schematics of 39 common jacks - many more combinations are possible, but these are the most commonly used. A basic description of the switching action of each jack accompanies each schematic. 80 JACKS AND PLUGS JACK SCHEMATICS PHONE: 773 792-2700 JACKS AND PLUGS JACK SCHEMATICS Single closed circuit. Isolated switching- "make" before "break" circuit. (J4-1D). Tip closed; ring open circuits. Isolated switching-two "make" circuits and one "break" circuit. (J10-2A-1B). Single open (tip) circuit and single closed (ring) circuit. (J9). Double jack, 2-conductors on each side. Tip circuits cross shunted; common sleeve. (J12). Single open circuit- "make" before "break". (J11). Tip closed; ring closed circuits. Isolated switching-"break" before "make" circuit. Double closed circuit. Separate sleeve "break" circuit. Single closed circuit. Isolated switching- Two "make" circuits. Single open circuit. Isolated switching- Two "make" circuits. Double open circuit. Isolated switching- One "make" and one "break" circuit. Double closed circuit. Isolated switching- One "make" and one "break" circuit. Tip closed; ring open circuits. Isolated switching-One "make" circuit. Double closed circuit. Isolated switching- Two "make" circuits. Double open circuit. Isolated switching- "break" before "make" circuit. WIRE-WRAPPING TERMINATIONS Switchcraft can build complete Jack Panel Assemblies with jacks, lamp jacks and switches with wire-wrapping terminals. If desired, components with solder lugs and wire-wrapping terminals can be installed in the same assembly. WIRE-WRAPPING TERMINAL DESIGN Jack springs with integral wire-wrapping terminals are made of special copper alloy for maximum work-life with excellent resistance to corrosion. Shank of terminal accommodates a maximum of three wire connections. Tini-Telephone (R) phone jacks, lamp jacks and switches with wire-wrapping terminals have slightly higher stack due to greater spacing required for wrapping tool access. Actuator springs and ground lug terminals are .704" long by .060" wide. WIRE-WRAPPING CONNECTIONS Use the chart below as a guide to recommended tools to be used with varying terminal thickness and wire gauges. Terminal Thickness (Inches) .020 thru .032 .016 .016 thru .032 Wire Gauge 22 & 24 24 26 Recommended Wire-Wrapping Tool (Gardner-Denver Co. Part Numbers) Use with 14B1-A Wrapping Tool Wrapping Bit Sleeve 500131 18840 500131 18840 37006 17611-2 SPECIFYING NOTE: Due to assembly variations containing components (solder lugs, wire-wrapping terminals, or both), these Jack Panel Assemblies are available on special order only. Contact Switchcraft. JACK MATING DATA NOTE: See tables for jack/plug mating data DIMENSIONS ARE FOR REFERENCE ONLY www.switchcraft.com Inch (mm) (R) Registered trademark of Switchcraft, Inc. Note: Contact your Switchcraft Representative for price and delivery