25 Switchcraft Inc., 25 Datasheet - Page 90

• Manufacturer Part Number: 25
• Description: S. F. JAX
• Manufacturer: Switchcraft Inc.
• Series: SF-JAX®r

Specifications of 25

• Rohs Information: Switchcraft RoHS Info.
• Connector Type: Phone Jack
• Gender: Female
• Signal Lines: Mono
• Plug/mating Plug Diameter: 6.35mm (0.250", 1/4") - Headphone
• Number Of Positions/contacts: 2 Conductors, 6 Contacts
• Internal Switch(s): Two Switches
• Mounting Type: Panel Mount
• Termination: Solder Eyelet(s)
• Shielding: Unshielded
• Features: Thread Lock
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Color: -
• Lead Free Status / Rohs Status: Not Compliant

FAX: 773 792 - 2129
SWITCHCRAFT, INC. 5555 N. Elston Ave. • Chicago, IL 60630
1/4" LONG FRAME TELEPHONE TWIN JACKS
High quality telephone jacks are essentially doubled versions
of MT-Jax
2600 and JP
Twin-Jax
MT388 AND WMT388
Frame mounting ears are on 1.375" centers, and bushings
are on .625" centers. Jacks are double, 2-conductor type with
a crossover wiring feature. If a mating plug is inserted in
either bushing, crossover contacts are opened (see
schematic). MT388 (solder lugs) is equivalent to WEco jack
410A, 410C and 410D. WMT388 (wire-wrapping) is equivalent
to WEco 410AM.
MT389 AND WMT389
Double, 3-conductor jacks with both the tip and ring circuits
interconnected (crossover wired) so if a plug is inserted in
either jack, common circuits are opened (see schematic).
MT-389 (solder lugs) is equivalent to WEco 482A. WMT389
(wire-wrapping) is equivalent to WEco 482AM and 482BM.
MT389
®
®
have direct WEco equivalents.
. Twin-Jax
®
Jack Panels and other standard jack panels.
MT388 and WMT388
®
are used in Switchcraft Series 2400,
MT388
WMT389
DIMENSIONS ARE FOR REFERENCE ONLY
SPECIFICATIONS
Frame and Stack Screws: Steel, plated with iridescent
iridite finish.
Springs: Copper alloy, spring tempered. Solder lugs are
solder coated.
Bushings: Nickel-plated copper alloy.
Contacts: Welded crossbar palladium in shunt circuits.
Insulation: Rigid plastic (MIL-type PBE-P, per MIL
Specification LP-513C). Extruded plastic insulating tubing
through stack.
ORDERING
Order by part number from table.
◊ Special Order only; contact Switchcraft.
1. Number MT388 is equivalent to MIL-type M641/11-1
2. Complete data for telephone and MIL-type plugs are contained in this section.
Mounting Screws: #6-32, Part Number P10725, can be ordered separately.
Contact Switchcraft. (Screws not supplied with jacks).
◊WMT388 Switchcraft types 411, 412, 413, 420
WMT389
Number
MT388
MT389
Part
MT388 and
WMT388
1
(mm)
Inch
MIL types M642/9-1 and M642/1-1
MIL types M642/2-1 and M642/2-2
Switchcraft types 414 and 482
LONG FRAME TELEPHONE TWIN JACKS
LONG FRAME TELEPHONE TWIN JACKS
WEco types 298B and 347B
SCHEMATIC CIRCUITS
Adjusted for Plug
MT389 and WMT389
WEco type 310
MT389 and WMT389
JACKS AND PLUGS
Dim. “X” max.
.562 (14.3)
.594 (15.1)
Inch (mm)
.562 (14.3)
.562 (14.3)
85