Rack & Panel
SM Series
Sub Miniature
/
#
20 -
#
24 Contacts
/
3 And 7.5 Amps
N
Nylon Nut
SM2
Receptacle
SM2P
Plug
SMH
Hood
Extreme compactness and lightweight of
these subminiature connectors make them
ideal for limited space application in Aircraft.
Portable Equipment and Instrumentation.
SPECIFICATIONS
Current Rating:
SM1 - 7.5 amps;
SM2, SM3 - 3 amps
No. of
Contacts:
1, 2, 3
Pin Contacts:
SM1 - .040 dia.
brass, gold plated
SM2, SM3 - .025 dia.
brass, gold plated
Socket
Contacts:
Phosphor bronze, gold plated
Terminations:
SM1 - .048 dia. solder cup
will accept up to
#
20 AWG
stranded wire.
SM2, SM3 - .037 dia. solder
cup will accept up to
#
24
AWG stranded wire.
Electrical Data:
Dielectric withstanding voltage
is one minute electrification at
1200 VAC.
Dielectric:
Diallyl Phthalate per MIL-M-14,
type SDG-F. Color Gray.
Polarization:
Body design allows engage-
ment in only one position.
Mounting:
Either plug or receptacle may
be mounted on chassis or
bulkhead with
1
/
4
- 28 cadmium
plated brass nut. Add “N” to
code number to order.
Hood:
Cable hood may be applied to
both plug and receptacle. Add
“H” to code number. When
ordering a hood separately,
order P/N SMH.
PHYSICAL AND
ELECTRICAL DATA
Current Rating
SM1 - 7.5 Amp
SM2 - 3 Amp
SM3 - 3 Amp
Weight in Ounces
P.
.02
.02
.02
R.
.02
.02
.02
*
Wire Range
SM1 -
#
20
SM2 -
#
24
SM3 -
#
24
*
Stranded
Winchester/Retconn
400 Park Road
s
Watertown, Connecticut 06795-0500
s
Phone: (860) 945-5000
s
FAX: (860) 945-5191
s
Internet: http://www.litton-wed.com
RP /
73
Rack & Panel
SM Series
OUTLINE
Dimensions are for reference only and
are subject to change. Outline drawings
on request.
.55
.255
.31 Hex.
.25
.09
.28
.09
.25
.55
.50
Sub Miniature
/
#
20 -
#
24 Contacts
/
3 And 7.5 Amps
.100
.048 Dia.
Solder Cup
Panel
Opening
1/4 - 28 UNF-2 THD.
.31
.040 Dia.
.13
Receptacle
SM1SN
Plug
SM1P
Hood
SMH
.31
.09
.255
.100
.55
.06
.19
.17
.22
.55
.19
.50
.23
.31 .23
.13
1/4 - 28 UNF-2 THD.
1/4 - 28 UNF-2 THD.
Receptacle
SM2SN
Plug
SM2P
Hood
SMH
.55
.31
.09
.19
.06
.17
.22
.55
.19
.50
.23
.23
.13
1/4 - 28 UNF - 2 THD.
Receptacle
SM3SN
Plug
SM3P
Hood
SMH
ORDERING INFORMATION
SM
3
S
H
s
Step 1
s
Step 3
Series Code:
Series SM
No. of Contacts:
1, 2, 3
s
Step 4
Contact Type:
P = Pin
S = Socket
s
Step 4
Type:
N = Nut
H = Hood
Winchester/Retconn
400 Park Road
s
Watertown, Connecticut 06795-0500
s
Phone: (860) 945-5000
s
FAX: (860) 945-5191
s
Internet: http://www.litton-wed.com
RP /
74
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