Rectangular Connectors
High Density Standard Module (HDSM) Connectors
Features
I
Designed for surface
mounting on both daughter
board and mother board for
increased circuit density
Basic design offers 38, 78,
120, 152, 200, 304, and 400
contact designs
High reliability twist pin and
socket per MIL-DTL-83513
and MIL-DTL-55302
Connector permits lateral
movement of daughter
board to accommodate
clamping of the heatsink
Plated through-hole
mounting available
Available with flying leads
Extender card option
available
Typical mating force for 304
contacts is 38 pounds
Designed to withstand vapor
phase soldering
Two rotatable (six position)
polarizing keys are provided
accommodating 36 possible
combinations
Jackscrew hardware
available; consult
Tyco Electronics
Different modular inserts
may be specified to include
coax (Pixi/Con), fiber optic
or other special contacts
Inserts may be partially or
fully loaded and installed in
the connector shell in
various configurations
The MICRODOT HDSM
connector is designed for
4 row .050 [1.27] pitch
density with a special low
force twist pin that meets
all requirements of MIL-
DTL-55302 and MIL-DTL-
83513. This high density
connector allows the use of
construction to double the
packaging density with
surface mount capability.
I
I
I
Rectangular
Connectors
I
I
I
I
I
I
2
I
I
Performance Data Summary
Electrical
Contacts
— Pin 24 AWG twist pin,
Socket #24 AWG, Wire range 24 AWG to
32 AWG solid and stranded.
Contact Resistance (voltage drop)
—
25 millivolts max. at 3 amps, 25° ± 3° C.
Current Rating
— 3 amps max. per
contact
Dielectric Withstanding Voltage
—
Volts RMS 60 Hz at room ambient:
600 V for solder pots at sea level.
150 V for solder pots at 70,000 ft.
[21,336m]
500 V for wire terminations at sea level.
200 V for wire terminations at 70,000 ft.
Insulation Resistance
— 5,000
megohms min. at room ambient.
Magnetic Permeability
— 2 mµ max.
Materials and Finishes
Contacts
— Copper alloy plated with
.000050 [0.00127] gold over copper
flash per MIL-G-45204, Type II.
Metal Shell
—
Insulator — Liquid Crystal Polymer
(LCP) per ASTM D5138 or
Polyphenylene Sulfide per
MIL-M-24519
Body Shell — Aluminum alloy plated
Nickel, electroless per MIL-C-26074.
I
Environmental
Temperature Range
—
-67°F to 257°F [-55° C to +125° C].
Vibration
— No discontinuity in
excess of 1 micro sec. when tested in
accordance with MIL-STD-1344,
Method 2005, test Condition IV.
Insulator Retention
— Inserts will
withstand a 50 lb. per square inch load
in either direction.
Shock
— No discontinuity in excess of
1 micro sec. when tested in accordance
with MIL-STD-1344, Method 2004, test
Condition E.
Mechanical
Contact Spacing
— .050 [1.27] centers
Contact Engagement &
Separation
— 5.0 oz max. [1.39N]
(eng.) 0.5 oz. min. [.14N] 3.5 oz. typ.
[.97N] (sep.) force.
Durability
— No mechanical or electri-
cal defects detrimental to the function of
the connectors after 500 cycles of mat-
ing and unmating. (Caution: Mating
force increases during durability cycling
may be noted).
Humidity
— After exposure to humidi-
ty as specified by MIL-STD-1344,
Method 1002, Type II, IR shall be 1
megohm min. immediately following
step 7a of Method 1002 and 1000
megohms min. after 24 hours of condi-
tioning per Method 1002.
Salt Spray
— Connectors shall meet
the performance requirements of contact
resistance, mating and unmating forces,
and contact retention after being subject-
ed to the 48-hour 5% solution salt spray
test per MIL-STD-1344, Method 1001,
Condition B.
Crimp Termination Tensile
Strength
— *Unassembled contacts
with crimped stranded wire terminations.
Wires will not pull out of contacts when
the following axial loads are applied:
24 AWG, 5 lbs., 26 AWG, 4 lbs.,
28 AWG, 3 lbs.
51
Catalog 1308638
Revised 8-05
www.tycoelectronics.com
Dimensions are in inches and
millimeters unless otherwise
specified. Values in brackets
are metric equivalents.
Dimensions are shown for
reference purposes only.
Specifications subject
to change.
USA: 1-800-522-6752
Canada: 1-905-470-4425
Mexico: 01-800-733-8926
C. America: 52-55-5-729-0425
South America: 55-11-3611-1514
Hong Kong: 852-2735-1628
Japan: 81-44-844-8013
UK: 44-141-810-8967
Rectangular Connectors
High Density Standard Module (HDSM) Connectors
(Continued)
A
B
.050
Typ.
[1.27]
A
B
.025
Typ.
[0.64]
.050
Typ.
[1.27]
.050
[1.27]
.150
[3.81]
.360
[9.14]
38 & 78 Position Plug
Socket Side
Flat Screw
2-56 UNC-2A
Thd.
Receptacle
Polarizing Key
2-56 UNC-2B
Thd.
Plug
Polarizing Key
2-56 UNC-2B
Thd.
Pin Side
A30
(38) (50)
B30
(38) (50)
.025
A1
[0.64]
B1
120, 152 & 200 Position Plug
Mtg. Nut/Polarizing Key (Customer Installed)
2 Supplied (Packed Loose)
A
End Cav. A1 Near Side
Marked As Shown
End Cav. D1 Far Side
Insulator
Pin Contact
.505
[12.83]
.290
Ref.
[7.37]
Housing
}
A
A1
.290
[7.34]
.165
[4.19]
Flat Screw
2-56 UNC-2A
Thd.
.350
Min.
[8.89] Ref.
.350
Min.
[8.89]
Lead Organizer
Keying Hardware
A9
(19)
B10
(20)
C
Ref.
A15
(19) (25)
A16
(20) (26)
B16
(20) (26)
B15
(19) (25)
D
.050
.050
[.127]
[.127]
A
A1
B1
2-56 UNC-2B Thd.
x
.125
[3.17] DP
28 AWG Wire
Solder Dipped
Ø.010 [0.25]
(All Leads)
.200
[5.08]
Section A-A
.300 .490
Max.
[7.62] [12.50]
C10
(20)
D9
(19)
C1 C30
(38) (50)
D1 D30
(38) (50)
C16
(20) (26)
D16
(20) (26)
C
C15
(19) (25)
D15
(19) (25)
C1
D1
C
(38 & 78)
A
B
.050
[1.27]
2 Plcs.
D
C
B
A
(120, 152 & 200)
.050
[1.27]
.150
[3.81]
.360
[9.14]
’A1’ Near Side Marking
’D1’ Far Side Marking
.290
.290
[7.34]
Ref.
[7.37]
A1
.505
[12.83]
.165
[4.19]
Lead
Organizer
.060
Thick
[1.52]
.062
[1.58]
.350
[8.89]
Min.
Pin Contact
Insulator
Housing
.025
Typ.
[0.64]
.050
[1.27]
Typ.
.250
[6.35]
Mtg. Nut/Polarizing Key
304 & 400 Position Plug
(Customer To Install)
2 Supplied (Packed Loose)
’A76’ (304) ’A100’ (400) Near Side Marking
’D76’ (304) ’D100’ (400) Far Side Marking
A
A***
.050
Ref.
[1.27]
C
(2 Plcs.)
D
Ref.
.125
Ref.
[3.18]
C
L
Standoff, 2-56 UNC-2B
Thd. x
.125
[3.17]
Min. Thd.
.250
[6.35]
B38(50)
A38(50)
B37(49)
A37(49)
A20(26)
B20(26)
A21(27)
B21(27)
A19(25)
B19(25)
A18(24)
B18(24)
A
2-56 UNC-2B Thd.
x
.125
[3.17] DP
28 AWG Wire
Solder Dipped
fl.010 [0.25]
(All Leads)
A2
B2
A1
B1
Section A-A
D75(99)
C75(99)
D76(100)
B76(100)
A58(76)
B58(76)
A59(77)
B59(77)
A57(75)
B57(75)
A56(74)
B56(74)
B39(51)
A39(51)
B40(52)
A40(52)
B3
A3
B4
A4
.220
[5.59]
.590
.340 .460
Max.
[8.64] [11.68] [14.99]
C76(100)
D76(100)
C75(99)
D75(99)
.050
Typ.
[1.27]
.100
Typ.
[2.54]
C59(77)
D59(77)
C58(76)
D58(76)
.025
Typ.
[0.64]
.075
Typ.
[1.91]
C56(74) D40(52)
D56(74) C40(52)
C57(75) D39(51)
D57(75) C39(51)
D
Typ.
.050
2 Plcs.
[1.27]
D37(49)
C37(49)
D38(50)
C38(50)
C21(27)
D21(27)
C20(26)
D20(26)
C18(24)
D18(24)
C19(25)
D19(25)
D4
C4
D3
C3
C1
D1
C2
D2
.100
[2.54]
Size 304 & 400 (Terminal Ident In Parentheses Is For Size 400)
52
Catalog 1308638
Revised 8-05
www.tycoelectronics.com
Dimensions are in inches and
millimeters unless otherwise
specified. Values in brackets
are metric equivalents.
Dimensions are shown for
reference purposes only.
Specifications subject
to change.
USA: 1-800-522-6752
Canada: 1-905-470-4425
Mexico: 01-800-733-8926
C. America: 52-55-5-729-0425
South America: 55-11-3611-1514
Hong Kong: 852-2735-1628
Japan: 81-44-844-8013
UK: 44-141-810-8967
Rectangular Connectors
High Density Standard Module (HDSM) Connectors
(Continued)
D9(19)
C10(20)
C
D1
C1
.226
Typ.
[5.74]
C
D
D1
C1
Flat Screw, 2 Supplied
2-56 UNC-2A Thd.
(Packed Loose)
B10(20)
A9(19)
.220
[5.59]
.195
[4.95]
B1
A1
(120, 152 & 200)
.160
[4.06]
.025
[0.64]
C
Ref.
.050
[1.27]
D
Ref.
A
B1
A1
H
Ref. Dim.
G
Gage Dim.
Ø .008 M [.2.03] A M
32 AWG,
Solder Dipped
.050
Radius
[1.27] Typ.
C Of Radius
L
Of Leads
(38 & 78)
F
Free State
“Break Away”
Notch
(All Leads)
C Of
L
Mtg. Hole
Typ. At
.545
[13.84] Dim.
Full Radius Typ.
.370
[9.40]
E
-A-
Torlon
Bushing
(4 Rqd)
B
Rectangular
Connectors
I.D. Of Bushing
Ø .132 Ø .062–.064
[3.35] [1.57–1.61]
.645
[16.38]
.695
.545
[17.65]
[13.84]
A
A9(38)A19(76)A30(120)
A38(152)A50(200)
Near Side Marking
D9(38)D19(76)D30(120)
D38(152)D50(200)
Far Side Marking
A
B
A1
Near Side Marking
D1
Far Side Marking
Polarizing Key, 2 Supplied
2-56 UNC-2B Thd.
(Packed Loose)
.348
[8.84]
Socket
Contact
.050 .188
±
.015
Typ.
[1.27] [4.78
± 0.38
]
Housing
Insulator
B
Section B-B
Section A-A
B
C
.025
Typ.
[0.64]
.195
Ref.
[4.95]
A
B
.025
[0.64] Typ.
.050
Typ.
[1.27]
.050
[1.27]
.150
[3.81]
Size 38 & 78
.025
Typ.
[0.64]
C
B
.050
[1.27]
D
Typ.
2
.195
Ref.
[4.95]
38 & 78 Position Receptacle
120, 152 & 200 Position Receptacle
.050
[1.27]
.360
[9.14]
Size 120, 152 & 200
Recommended PCB Footprint Pattern
Flat Head Screw (2 Plcs.)
2-56 UNC-2A Thd.
(Packed Loose, Customer To Install)
B
B/2
(2 Plcs.)
C1
D1
.360
[9.14]
H
Ref. Dim.
G
Gage Dim.
F
Free State
Ø .008 M [.2.03] A M
32 AWG,
Solder Dipped
.050
Radius
[1.27] Typ.
C Of Radius
L
Of Leads
(Typ.) At
.545
[13.84] Dim.
.025
Typ.
[0.64]
B
.250
[6.35]
.160
Typ.
[4.06]
Full
Radius
Typ.
C
(2 Plcs.)
D
(4 Plcs.)
.050
Typ.
[1.27]
A
.226
B1
A1
[5.74]
.370
[9.40]
.645
.545
[16.38]
.695
[17.65]
[13.84]
“Break Away”
Notch
(All Leads)
C Of
L
Mtg. Hole
B
A76(304) A100(400)
Near Side Marking
D76(304) D100(400)
Far Side Marking
.250
[6.35]
.050
[1.27]
2 Plcs.
A
.025
Typ.
[0.64]
.348
[8.84]
Socket
Contact
.050 .188
±
.015
Typ.
[1.27] [4.78
± 0.38
]
Housing
Insulator
A1
Near Side Marking
D1
Far Side Marking
.050
Typ.
[1.27]
Section A-A
B
Polarizing Key (2 Plcs.)
(Packed Loose, Customer To Install)
B
A
.050
[1.27]
.150
[3.81]
.018
[0.46]
.035
[0.89]
1/2 B
(2 Plcs.)
.195
[4.95]
D
Typ.
2 Plcs.
C
(2 Plcs.)
Size 304 & 400
Recommended PCB Footprint Pattern
53
Catalog 1308638
Revised 8-05
www.tycoelectronics.com
Dimensions are in inches and
millimeters unless otherwise
specified. Values in brackets
are metric equivalents.
Dimensions are shown for
reference purposes only.
Specifications subject
to change.
USA: 1-800-522-6752
Canada: 1-905-470-4425
Mexico: 01-800-733-8926
C. America: 52-55-5-729-0425
South America: 55-11-3611-1514
Hong Kong: 852-2735-1628
Japan: 81-44-844-8013
UK: 44-141-810-8967
Rectangular Connectors
High Density Standard Module (HDSM) Connectors
(Continued)
No. of Cavities
Single Bay
38
78
120
152
200
Double Bay
304
400
4.600
116.84
5.800
147.32
4.440
112.78
5.640
143.26
1.900
48.26
2.500
63.50
.925
23.50
1.225
31.12
A Dim.
1.000
25.40
1.500
38.10
2.050
52.07
2.450
62.23
3.050
77.47
B Dim.
.840
21.34
1.340
34.04
1.890
48.01
2.290
58.17
2.890
73.41
C Dim.
.450
11.43
.950
24.13
1.500
38.10
1.900
48.26
2.500
63.50
D Dim.
—
—
.725
18.42
.925
23.50
1.225
31.12
How To Specify
S — Solder pot
Z — Coke Bottle Termination (Receptacle only, see Table I)
ZA — 4 Row Wire Termination (Plug only)
ZB — 8 Row Wire Termination (Plug only)
X — Special Wire and/or other than above
HDSM
Connector Series
Contact Location
1 — Full complement of contacts
2 — Contacts in outside row only
3 — Contacts in inside row only
4 — Other than above or special housing
1
152
L
4
L
4
0.5
Wire Length
Wire Color/Finish
1 — All white
2 — All yellow
3 — All gray
4 — Gold plated
5 — Tin dipped gold plated
6 — Bare (unfinished)
7 — Color coded per MIL-STD-681,
System 1
8 — Special color code
9 — Ten basic color repeating on
each row (A, B, C, D)
(starting with black)
Layout
38, 78, 120, 152, 200, 304 & 400
Contact Type
L — Low Force Pin
SL — Low Force Socket
Wire Type
*A — Type E, 7 strand
*B — Type ET, 7 strand
*C — Type E, 19 strand
6—26 AWG
8—28 AWG
0—30 AWG
*Per MIL-W-16878
*D — Type ET, 19 strand
F — 7 strand per MIL-W-22759/11
(#28 AWG only)
G — 19 strand per MIL-W-22759/11
26 AWG, 24 AWG
L — Copper, solid
Q — Stranded per MIL-W-22759/33
Wire Size
4—24 AWG
5—25 AWG
Table I
Dash No.
1
2
3
4
Gap Between
Bushing "E"
.100
2.54
.093
2.36
.118
2.99
.145
3.68
F Dim.
.120
3.05
.060
1.52
.235
5.97
.120
3.05
G Dim.
.180
4.57
.150
3.81
.260
6.60
.180
4.57
H Dim.
(Ref.)
.330
8.38
.330
8.38
.483
12.27
.330
8.38
54
Catalog 1308638
Revised 8-05
www.tycoelectronics.com
Dimensions are in inches and
millimeters unless otherwise
specified. Values in brackets
are metric equivalents.
Dimensions are shown for
reference purposes only.
Specifications subject
to change.
USA: 1-800-522-6752
Canada: 1-905-470-4425
Mexico: 01-800-733-8926
C. America: 52-55-5-729-0425
South America: 55-11-3611-1514
Hong Kong: 852-2735-1628
Japan: 81-44-844-8013
UK: 44-141-810-8967
