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1/4" ENCLOSED TELEPHONE JACKS
1.
Series M11*
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2.
Series MNS11*
3.
Series MS11*
4.
Twin Hi-D Jax
5.
Series MN11*
click here to download a schematic drawing
(you will need to have Adobe Acrobat installed on your system to do this)
Compactly constructed jacks permit direct cross-patching with Switchcraft, WEco and
MIL-type telephone plugs and patch cords. Series M Hi-D Jax® offer a choice of solder
lugs or PC terminals. Both insulated and metal bushings can be specified, as well as .21
inch inside diameter sleeves for narrow plug fingers. Maximum contact resistance is .1
ohm. Springs are made of a special gold-plated copper alloy. Welded cross bar gold alloy
contacts are available on special order.
SERIES M-11* Hi-D JAX®
Two- and 3-conductor type mate with .25 inch diameter finger plugs. Tip and ring springs
are gold-plated. Shunts (if used) have welded crossbar palladium contacts. Ring springs
(where used with shunts) have welded crossbar palladium contacts. Tip springs (when
used) do not have a contact welded to the spring. Bushing has 3/8-32-NEF-2 thread;
locknut and flat washer for mounting are supplied.
SERIES MN-11* Hi-D JAX®
Same as Series M-11* except threaded bushing is molded thermoplastic for insulated
mounting. Continuous sleeve contact assures positive sleeve connection without exposed
metal on front of panel.
SERIES M113 AND M114 Hi-D JAX®
The versatile 3-conductor M113 and M114 feature springs which accept a wide variety of
1/4 inch plug designs. Self-aligning PC terminals allow for easier insertion into a printed
circuit board. Also feature a metric thread mounting.
SPECIFICATIONS
MATERIALS
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Mounting Bushing:
Series M11*, MS11* - Nickel-plated
copper alloy. Series MN11*, MNS11* - Molded thermoplastic.
Housing:
Molded thermoplastic, UL 94V-0.
Springs:
Copper alloy.
Contacts (mil-type):
Tip and Ring Springs are gold-plated.
Shuntsprings (where used) are welded crossbar palladium.
Welded crossbar gold alloy contacts are available on
special order.
Contacts (commercial):
Tin-plated integral contacts.
Sleeve Terminal:
Steel, tin-plated.
Hardware:
Supplied with one
P10001
copper alloy, nickel-plated locknut and one
S10221
steel, nickel-plated washer.
MECHANICAL
Life:
10,000 insertion/withdrawal cycles, minimum.
Insertion/Withdrawal Forces:
Nominal plug retention on
2-conductor jack is .75 pounds with .5 pounds minimum.
Nominal plug retention on 3-conductor jack is 2 pounds
with 1.5 pounds minimum. With double tips, the nominal
is 1.5 pounds and 1 pound minimum.
Maximum Recommended Mounting Torque:
6 inch-lb. for thermoplastic bushing.
Mounting Torque (for Spring Lock PC Terminal):
8 inch-pound for thermoplastic bushings.
ELECTRICAL
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Contact Resistance:
.020 ohms maximum (initial), .050
ohms maximum (after humidity, durability exposure).
Per MIL-STD-202E.
Insulation Resistance:
10,000 M(omega) minimum (initial),
1,000 M(omega) minimum (after humidity).
Dielectric Withstanding Voltage:
500 V, 60 Hz (rms) AC.
Contact Rating:
.25A, 48 VDC make and break,
3A carry only.
ENVIRONMENTAL
Thermal Range:
-55°C to +85°C (non-operating); -20°C
to +65°C (operating).
Thermal Shock:
Per MIL-STD 202, method 107.
Humidity:
Per MIL-STD 202, method 106.
Salt Spray:
Per MIL-STD 202, method 101.
SERIES MS11* Hi-D JAX
®
3-conductor with .21 inch inside diameter sleeve. Mates with plugs having .206 inch
diameter finger. Protects against accidental insertion of .25 inch diameter finger plugs.
Gold-plated tip and ring springs. Welded crossbar palladium contacts on shunt springs
standard. Bushing has 3/8-32-NEF-2 thread; locknut and flat washer for mounting are
supplied.
½ MNS11* Hi-D JAX
®
Same as Series MS11* except bushing is molded thermoplastic.
½ M11* Hi-D JAX
®
Two Series M11* Hi-D Jax strapped on .625 inch centers. Mates with Switchcraft
®
Twin
Plugs. 411, 412 and 413. MIL-type Littel-Plug® phone plugs, 420, 430 and 440 (2-
conductor) and 482 and 483 (3-conductor) are also recommended for mating with this
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series.
½ MNS11* Hi-D JAX
®
Same as Twin M11* except with insulated bushing. Mounting centers larger than .625
inch and unthreaded bushings are available on special order.
½ MS11* Hi-D JAX
®
Mates with Switchcraft 415 Twin-Plug® plug, which has one .25 inch diameter finger and
one .206 inch diameter finger. Also mates with MIL- type plugs listed in this section.
2-CONDUCTOR
Part Number
Solder Lugs
M111
Part Number
PC Terms
Description
.25 inch I.D. sleeve
metal bushing.
.25 inch I.D. sleeve
molded thermoplastic
bushing.
½
.25 inch I.D. sleeve,
metal bushing.
.25 inch I.D. sleeve,
molded thermoplastic
bushing.
IX
.25 inch I.D. sleeve,
molded thermoplastic
bushing.
III
Schematic**
I
Typical
Mating Plug*
MN111
½
MN112A
M113E
MN113E
½
½ Special Order only; contact Switchcraft.
* Other mating plugs are contained in this plug section.
** See pages 65 and 66.
MILITARY Hi-D JAX® PART NUMBERING SYSTEM
Mating Plug
Option
Bushing Option
Series
Circuitry
Suffix Options
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