5-52
MICRODOT Microminiature D Connectors
Catalog 1308940 Dimensions are shown for Dimensions are in millimeters USA: +1 800 522 6752 For additional support numbers
Revised 9-14 reference purposes only. unless otherwise specified. Asia Pacific: +86 0 400 820 6015 please visit www.te.com
Specifications subject UK: +44 800 267 666
www.te.com to change.
MICRODOT Microminiature D Connectors Introduction
MICRODOT Connectors
MCK and MCD High Density
Microminiature “D”
Connectors described in
this catalog comprise a
complete connector system,
which is adaptable to
a numerous variety of form
factors. Low engaging force
is achieved by the manner
in which the twist pin
contacts are designed.
By constructing the male
contact as a breathing
helical spring, electrical
contact is achieved at many
points around the periphery
of the pin bundle rather
than at a few discrete
points, as in conventional
pin designs. Normal twist
pin engagement force is
6 oz. [1.67N] typically and
8 oz. [2.22N] maximum. The
low force twist pins exhibit
an engaging force of 4 oz.
[1.11N] typically and 5 oz.
[1.39N] maximum.
The MCK and MCD Series
of connectors featured in
this catalog are designed to
meet the applicable require-
ments of MlL-DTL-83513,
for intermateability,
interchangeability, and
performance. Designed for
both military and commer-
cial applications, the MCK’s
and MCD’s are especially
well suited for use in minia-
turized airborne and space
electronics, computers, and
test equipment. The metal
shell MCK’s and plastic
shell MCD’s are available
with solder cup, and solid or
stranded wire terminations.
MCK transition blocks are
standard for printed circuit
board mounting. Custom
termination configurations
for both MCK and MCD
can be accommodated.
Micro D’s are also supplied
in wired harness assemblies.
Product Facts
■ Designed for both military
and commercial applications
■ Low engaging force is
achieved by the manner in
which Twist Pin Contacts are
designed
■ T
he metal shell and plastic
shell are available with
solder cup and solid or
stranded wire terminations
■ Mating force maximum is
10 oz. [2.78N] times the
number of contacts
■ Durability — No known
mechanical or electrical
issues detrimental to the
function of the connectors
after 500 cycles of mating
and unmating
■ Current Rating — 3 amps
max per contact
5-53
MICRODOT Microminiature D Connectors
5
Nanominiature and Microminiature Connectors
MICRODOT MCK/MCD/MCDM Series Metal and Plastic Shell Connectors
Electrical
Contacts — Pin 24 AWG twist pin,
Socket 24 AWG precision machined
barrel or Stamped and Formed 24 AWG
Pin and Socket. Wire Range 24 AWG to
30 AWG solid and stranded.
Contact Resistance — (voltage drop)
25 millivolts max. at 3 amps, 77°± 7.4°F
[25°± 3° C].
Current Rating — 3 amps max. per
contact.
Dielectric Withstanding Voltage —
Volts RMS 60 Hz at room ambient.
At sea level 600V
At 70,000 ft. [21,336 m] 150V
Insulation Resistance — 5,000
megohms min. (@ 500 VDC) at ambient
room temperature.
Magnetic Permeability — 2 mu max.
Mechanical
Contact Spacing — .050 [1.27mm]
centers.
Contact Engagement &
Separation — Standard contact
engaging force is 6.0 oz. [1.67N] (8.0 oz.
[2.22N] max.). Separation force is 0.5
[.14N] oz. min.
Mating Force Maximum —
Calculated as 10 oz. times the number
of contacts.
Environmental
Temperature Range —
-67°F to 257°F [-55° C to +125°C] for
MCK/MCD, -67°F to 302°F [-55°C to
+150°C] for MCDM.
Vibration — No discontinuity in
excess of 1 µ second when tested in
accordance with EIA-364-28, test
condition IV.
Solderability — Connectors shall
pass the test requirements of MIL-STD-
202, Method 208
Shock — No discontinuity in excess of
1 µ second when tested in accordance
with EIA-364-27, test condition E.
Durability — No mechanical or electri-
cal defects detrimental to the function of
the connectors after 500 cycles of mat-
ing and unmating.
Humidity — After exposure to humidity
as specified EIA-364-31, Method II, IR
shall be 1 megohm minimum following
step 7a of EIA-364-31 section 4.3.6.1
and 1000 megohms minimum after 24
hours of conditioning per EIA-364-31.
Salt Spray — Connectors shall meet
the performance requirements of contact
resistance, mating and unmating forces,
and contact retention after being sub-
jected to the 48 hour 5% solution salt
spray test per EIA-364-26,Condition B.
Fluid Immersion — Unmated con-
nectors after being fully immersed in one
of the following fluids, for the prescribed
time, will mate at a force of 10 oz.
[2.78N] times the number of contacts
or less: Perchloroethylene, 2 hours;
Lubricating oil per MIL-L-23699,
20 hours.
Insert Retention — Inserts will with-
stand a 50 lb. [34N/cm
2
] per square inch
load in either direction.
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. [22.24N]; 26 AWG,
4 lbs. [17.79N]; 28 AWG, 3 lbs.
[13.34N]
Outgassing — When tested in accor-
dance with SP-R-0022, Total Mass Loss
(TML) shall be less than 1.0% and
Volatile Condensable Material (VCM)
shall be less than 0.1% of the original
specimen.
Materials and Finishes
Contacts — Copper alloy plated with
.000050 [.00127] gold over copper flash
per MIL-G-45204 Type II.
Hardware — see pages 5-61 and 5-62.
MCK-Metal Shell —
Insulator — Liquid crystal polymer
(LCP) per ASTM D5138, or
Polyphenylene sulfide per ASTM
D4067 or MIL-M-24519
Interfacial Seal — Fluorosilicone Rubber
per MIL-R-25988 (socket side only)
Body Shell — Aluminum alloy-high
grade plated
Cadmium per QQ-P-416
Nickel, electroless per AMS 2404
Transition Block Shell —
Liquid crystal polymer (LCP) per ASTM
D5138, or Polyphenylene sulfide per
ASTM D4067 or MIL-M-24519
Potting Material — Epoxy, Black
MCD-Plastic Shell —
Insulator/Body — Polyester, glass filled
per MIL-M-24519, Liquid crystal
polymer (LCP) per ASTM D5138, or
Polyphenylene sulfide per ASTM
D4067 or MIL-M-24519
Wire Terminations —
Solid copper per QQ-W-343 gold plated
per MIL-DTL-45204
Stranded PTFE insulated per MIL-W-
16878
Stranded PTFE insulated per MIL-W-
22759/11, /33
Solid copper per QQ-W-343, solder
dipped (Transition block)
MCDM-Metal Shell —
Insulator — Diallyl Phthalate per MIL-
M-14, Type SDG-F
Body Shell — Aluminum alloy—high
grade, nickel plated
Technical and Performance Data
(Applicable to MCK, MCD and MCDM unless otherwise noted)
MIL-DTL-83513 — Only the descriptive legend in bold italic is applicable to current MIL-DTL-83513 configurations;
MIL-DTL-83513/1 through /4 — MCKS metal shell; MIL-DTL-83513/6 through /9 — MCD plastic shell.
In addition, MIL-DTL-83513 solid copper wire termination is specified 25 AWG, 0.5; and 1.0 [25.4] lengths only and
stranded insulated wire termination is specified 26 AWG, 18.0 [457.2] and 36.0 [914.4] lead lengths only. Hardware for
MIL-DTL-83513 configurations is specified separately by the M83513/5-XX designation. M83513/1 through /4 and /6
through /9 specify no hardware (B). Mounting/mating hardware is shown on page 5-61 with the applicable military
nomenclature. The MICRODOT catalog part number for a MIL-DTL-83513 configuration may be constructed
to include the desired hardware.
See pages 5-78 through 5-82 for M83513/ cross reference.
Twist Pin, Pin and Socket
Contacts
The contact spring member
normally found in socket
contacts has been eliminated
by creating a breathing
helical spring principle on
the pin contact — smaller,
more durable contacts
can be manufactured
economically.
Wire range 24-36 AWG solid & stranded.
Catalog 1308940 Dimensions are shown for Dimensions are in millimeters USA: +1 800 522 6752 For additional support numbers
Revised 9-14 reference purposes only. unless otherwise specified. Asia Pacific: +86 0 400 820 6015 please visit www.te.com
Specifications subject UK: +44 800 267 666
www.te.com to change.
5-54
MICRODOT Microminiature D Connectors
Catalog 1308940 Dimensions are shown for Dimensions are in millimeters USA: +1 800 522 6752 For additional support numbers
Revised 9-14 reference purposes only. unless otherwise specified. Asia Pacific: +86 0 400 820 6015 please visit www.te.com
Specifications subject UK: +44 800 267 666
www.te.com to change.
MICRODOT How To Specify MCK and MCD Connectors
Metal Shell
Plastic Shell
MCK N1 B 37 P 6 A 1 18.0
L
ead Length in Inches (Min.)
X — Special, not described by legend.
Insulation Color or Finish
1 — All white wire 6 — Bare (unfinished)
2 — All yellow wire 7 — Color coded per MIL-STD-681, System 1
3
— All gray wire 8 — Special color code
4 — Gold plated 9 — 10 Solid color repeating per MIL-DTL-83513
5 — Tin dipped gold plated
W
ire Type
A — Type E, 7 strand
B
— Type ET, 7 strand
C — Type E, 19 strand
D — Type ET, 19 strand
F
— 7 strand per MIL-W-22759/11
(28 AWG only)
G
— 19 strand per MIL-C-22759/11
(26 AWG only), 24 AWG
L — Copper, Solid
(25 AWG only)
Q — Stranded per MIL-W-22759/33
(26 AWG only)
W
ire Size
4 — 24 AWG 5 — 25 AWG 6 — 26 AWG 8 — 28 AWG 0 — 30 AWG
Per MIL-W-16878
{
Connector Series
M
CK — Twist Pin & Drawn Socket
MCKS — Stamp & Formed Pin & Socket
S
hell Finish
C1 — Cadmium, Clear
C
2 — Cadmium, Yellow Chromate
N1 — Nickel, Electroless
Hardware (See Pages 5-79 and 5-80)
B
— No Hardware
F
— Float Bushing
KM — Jackscrew, Slotted Head, High Profile (9-51)
H
M — Jackscrew, Slotted Head, High Profile (100)
LM — Jackscrew, Slotted Head, Low Profile (9-51)
J
M — Jackscrew, Slotted Head, Low Profile (100)
Q
M — Jackscrew, Allen Head, High Profile (9-51)
TM — Jackscrew, Allen Head, High Profile (100)
R
M — Jackscrew, Allen Head, Low Profile (9-51)
NM — Jackscrew, Allen Head, Low Profile (100)
P — Jackpost Assembly (9-51)
S — Jackpost Assembly (100)
X — Lockscrew, Slotted Head
Y
— Lockscrew, Allen Head
Z — Clip and Key (Clip Mount Only)
Layout
9, 15, 21, 25, 31, 37, 51, 100
See contact arrangement
Contact Type
P — Pin (Plug)
S — Socket (Receptacle)
S
— Solder pots 26 AWG max.
MCD R3 B 37 P 6 A 1 18.0
Lead Length in Inches (Min.)
X — Special — Does not fit description below.
Insulation Color or Finish
1 — All white wire 6 — Bare (unfinished)
2 — All yellow wire 7 — Color coded per MIL-STD-681, System 1
3 — All gray wire 8 — Special color code
4 — Gold plated 9 — 10 Solid color repeating per MIL-DTL-83513
5 — Tin dipped gold plated
Wire Type
A — Type E, 7 strand
B — Type ET, 7 strand
C — Type E, 19 strand
D — Type ET, 19 strand
F — 7 strand per MIL-W-22759/11
(28 AWG only)
G — 19 strand per MIL-C-22759/11
(26 AWG only), 24 AWG
L — Copper, Solid
(25 AWG only)
Q — Stranded per MIL-W-22759/33
(26 AWG only)
Wire Size
4 — 24 AWG 5 — 25 AWG 6 — 26 AWG 8 — 28 AWG 0 — 30 AWG
Per MIL-W-16878
{
Connector Series
Insulator Type/Material
G2 — Clip Mount, polyester, natural
G3 — Screw Mount, polyester, natural, .093 Flg.
R2 — Clip Mount, Ryton
R3 — Screw Mount, Liquid Crystal Polymer
or Polyphenylene Sulfide
Hardware (See Pages 5-79 and 5-80)
B — No Hardware
F — Float Bushing
KM — Jackscrew, Slotted Head, High Profile
LM — Jackscrew, Slotted Head, Low Profile
QM — Jackscrew, Allen Head, High Profile
RM — Jackscrew, Allen Head, Low Profile
P — Jackpost Assembly
X — Lockscrew, Slotted Head
Y — Lockscrew, Allen Head
Z — Clip and Key (Clip Mount Only)
Layout
9, 15, 21, 25, 31, 37, 51
See contact arrangement
Contact Type
P — Pin (Plug)
S — Socket (Receptacle)
S — Solder pots 26 AWG max.
Note: Items in bold italic are qualified to MIL-DTL-83513.