181 Switchcraft Inc., 181 Datasheet - Page 84

• Manufacturer Part Number: 181
• Description: CONN PLUG PHONE SILENT 2-COND
• Manufacturer: Switchcraft Inc.
• Series: SILENT-PLUGr
• Type: Audior

Specifications of 181

• Rohs Information: Switchcraft RoHS Info.
• Connector Type: Phone Plug
• Gender: Male
• Signal Lines: Mono
• Plug/mating Plug Diameter: 6.35mm (0.250", 1/4") - Headphone
• Number Of Positions/contacts: 2 Conductors, 2 Contacts
• Internal Switch(s): Does Not Contain Switch
• Mounting Type: Free Hanging (In-Line)
• Termination: Solder Eyelet(s)
• Shielding: Shielded
• Features: Cable Clamp
• Number Of Ports: 1Port
• Body Orientation: Straight
• Number Of Terminals: 2
• Contact Material: Copper Alloy
• Number Of Contacts: 2POS
• Mounting Style: Cable
• Termination Method: Solder
• Housing Material: Plastic
• Termination Style: Solder
• Contact Plating: Tin
• Color: Nickel
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Color: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

FAX: 773 792 - 2129
SWITCHCRAFT, INC. 5555 N. Elston Ave. • Chicago, IL 60630
Single open circuit. (J1.)
Transfer circuit. (J5).
Single closed. Isolated
switching “make”
circuit. (J4-1A).
JACK SCHEMATICS
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.
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.
Double open circuit.
Isolated switching–
separate “break” and
make circuits (J2-1A-1B).
Double open circuit.
Isolated switching–
separate “make”
circuits on both tip and
ring. (J2-2A).
Single closed circuit,
sleeve common. (J3).
Tip closed, ring
open. (J10).
Double closed
circuit. (J7).
Single closed circuit
Isolated switching
“break” circuit. (J4-1B).
Double closed circuit.
Isolated switching
“make” circuit on ring
spring. (J7-1A).
DIMENSIONS ARE FOR REFERENCE ONLY
Single closed circuit. (J4).
Tip closed, ring open
(common to sleeve). (J6).
Single closed circuit.
Isolated switching
transfer circuit. (J4-1C).
Single closed circuit–
“make” before
“break”. (J8).
Single closed circuit
plus “make” before
“break”. Isolated
switching–“make”
before “break”
circuit. (J8-1D).
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.
Notation
1-A
1-B
1-C
1-D
(mm)
Inch
Double open circuit. (J2).
Single open circuit.
Isolated switching
“break” circuit. (J1-1B).
Double closed circuit.
Isolated switching
“break” circuit. (J7-1B).
Single open circuit.
Isolated switching
transfer circuit. (J1-1C).
Single open circuit.
Isolated switching–
separate transfer and
“make” circuits.
(J1-1A-1C).
One, SPST switching circuit. Also known as NO
(normally open) or “make” circuit.
One, SPST switching circuit. Also known as NC
(normally closed) or “break” circuit.
One, SPDT switching circuit. Also known as transfer
or “break” before “make” circuit.
One, SPDT switching circuit. Also known as “make”
before “break” circuit.
Meaning
JACKS AND PLUGS
JACK SCHEMATICS
JACK SCHEMATICS
Single open circuit.
Isolated switching
“make” circuit. (J1-1-A).
Double closed circuit,
ring common to
sleeve. (J13).
Double open circuit.
Isolated switching
transfer circuit. (J2-1C).
Double open circuit.
Isolated switching
“make” circuit.
(J2-1A).
Single closed circuit.
Isolated switching
“break” circuit. Sleeve
common to isolated
switching circuit throw.
(J4-1B).
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