cat-CCS-JOHN-2.92mm-SMK-Connectors-html.html

50 Ohm Connectors - Inches (Millimeters) - Customer Drawings Available Upon Request

2.92mm CONNECTORS

The Johnson 2.92mm Connector provides an excellent solution for demanding applications requiring high frequency transmission. Although
similar to the SMA interface, a smaller internal body diameter (2.92mm) and air dielectric provide a higher cutoff frequency and other key
advantages:

Bodies:

Stainless steel per QQ-8-626, gold plated' per MIL-G-45204

.00005" min. or passivated per MIL-F-14072 B (EL) 300

Contacts:

Female - beryllium copper per QQ-C-530, gold plated

per MIL-G-45204 .00005" min.

Contact Support Beads

PTFE fluorocarbon per ASTM D 1710

and ASTM D 1457 or modified PPE resin

eal Rings

Silicone rubber per ZZ-R-765

*All gold plated parts include a .00005” min. nickel underplate barrier layer.

MATERIAL SPECIFICATIONS

Precision manufacturing allows superior electrical performance to 40 GHz.

Female contacts have a unique three-slot construction, which enhances connectivity by creating a more rugged connector while reducing the
chance of intermittent connections.

Precise assembly tooling assures excellent, repeatable contact and support bead location on cabled connectors.

Connector mating interface per MIL-STD-348

Mating interface control provides consistent electrical performance.

The plug connector VSWR is 1.20 Max to 40 GHz and a 12 inch SMK plug to plug cable assembly performs better than 1.35 VSWR to 40 GHz.

The Field Replaceable Jacks are teamed with a high quality hermetic seal feed thru for use in sealed circuit modules.

The 2.92mm plug interface employs more precise dimensions than an SMA and uses a shorter snub nose male pin such that the connector
bodies align before lhe contacts engage.

MATING ENGAGEMENT:

2.92MM SERIES PER MIL-STD-348

Engagement Design

: MIL-STD-348, Series SMK (2.92mm)

Engagement/Disengagement Force

: 2 inch-pounds maximum

Mating Torque

: 7 to 10 inch-pounds

Coupling Proof Torque

: 15 inch-pounds minimum

Coupling Nut Retention

: 60 pounds minimum

Contact Retention

: 6 lbs. minimum axial force (captivated contacts)

Cable Retention:

.086

semi-rigid

.141

semi-rigid

* or cable breaking strength whichever is less.

Durability: 500 cycles min

Notes:

1. ID of contact shall meet VSWR and connectivity requirements
when mated with dia. .0355-.0365 male pin.

Axial Force*(lbs) Torque (in-oz)

MECHANICAL SPECIFICATIONS

(Meets or .exceed the applicable paragraph of MIL-C-39012)

Temperature Range

: -65°C to + 165°C

Thermal Shock

: MIL-STD-202, Method 107, Condition B

Corrosion

: MIL-STD-202, Method 101, Condition B

Shock

: MIL-STD-202, Method 213, Condition I

Vibration

: MIL-STD-202, Method 204, Condition D

Moisture Resistance

: MIL-STD-202, Method 106

ENVIRONMENTAL RATINGS

50 Ohm Connectors - Inches (Millimeters) - Customer Drawings Available Upon Request

2.92mm CONNECTORS

Impedance

: 50 ohms

Frequency Range

: 0-40 GHz

VSWR

: {f = GHz)

Semi-rigid straight cabled connectors and adapters

120 Max

Field replaceable (see typical return loss graph)

N/A

Working Voltage

: (Vrms maximum)

Connectors for Cable Type

.086 semi-rigid and field replaceable

335

.141 semi-rigid and adapters

500

125

Dielectric Withstanding Voltage

: (VRMS minimum at sea level)

.086 semi-rigid and field replaceable

1000

.141 semi-rigid and adapters

1500

Corona Level

: (Volts minimum al 70,000 feet)

.086 semi-rigid.and field replaceable

250

.141 semi-rigid and adapters

375

Insertion Loss

: (dB maximum)

Adapters

0.06 f (GHz), tested at 6 GHz

Straight semi-rigid cable connectors 0.03 f (GHz), tested at 10 GHz

Insulation Resistance

: 5000 megohms minimum

Contact Resistance

: (milliohms maximum)

Center contact straight cabled connectors

3.0*

4.0

Center contact adapters

4.0

6.0

Field replaceable connectors

6.0

8.0

Outer contact (all connectors)

2.0

N/A

Body to cable (gold plated connectors) 0.5

N/A

Body to cable (passivated connectors) 5.0

N/A

RF Leakage

: (dB minimum, tested at 2.5 GHz) -90dB

RF High Potential Withstanding Voltage

: (Vrms minimum, tested at 4

and 7 MHz)

.086 semi-rigid and field replaceable

670

.141 semi-rigid and adapters

1000

ELECTRICAL RATINGS

FIELD REPLACEABLE APPLICATION NOTES

Field Replaceable Test Assembly

Typical Return Loss

The field replaceable connectors manufactured by Johnson
Components

, are easy to install and replace. The hermetic seal is

mounted into the circuit module wall and the connector can be removed
and replaced without destroying the hermeticity of the circuit housing.
The field replaceable connector creates a transition from microstrip
circuitry to a coaxial transmission line. The 2.92mm seal pin diameter
is .012 (.030) to minimize the capacitive effects on the circuit trace. For
optimum electrical performance, ihe transition from the hermetic seal
to the microstrip trace must be properly compensated. Compensation
involves adjusting the microstrip trace width to minimize any Impedance
discontinuities found in the transition area.
The plot shown below is representative of the typical return loss of a
Johnson Components

field replaceable SMK connector. To produce

the data shown below, a test fixture is created using the Johnson
Components

SMK hermetic seal. The fixture consists of a suitably

thick spacer plate with the hermetic seal mounted flush to both surfaces.
Two connectors are mounted back to back around the fixture and the
VSWR of this lest assembly is measured. The calculated return loss trace
shown Is equivalent to the square root of the measured VSWR of the test
assembly. Since the connectors tested are of identical design. it can be
stated with fair accuracy that the calculated data shown represents the
response of a single field replaceable connector and its transition to the
hermetic seal.
Although Johnson Components

does not publish a VSWR specification

for field replaceable connectors, typical connector return loss can be
expected to be less than -20 dB through 40 GHz. A VSWR specification
is not stated because an Industry standard method for testing field
replaceable connectors does not exist. The actual performance of the
connector is dependent upon the following:
1. For optimum electrical performance, Johnson Components

recommends the use of our standard 142-1000-033 hermetic seal with a
pin diameter of .0120 (0.305) +/ - .0005 (0.013).
2. It is recommended that the hermetic seal be mounted flush with the
circuit housing. Tolerance variations between the hermetic seal and
machined housing do not always guarantee an optimum transition to the
connector. Some manufacturers recommend an additional counterbore
in the circuit housing to accommodate a solder washer during installation
of the seal. Johnson Components

does not recommend this type of

installation because if the counterbore is not completely filled with solder,
electrical discontinuities may be created.
3. The transition between the hermetic seal pin and the microstrip trace
will effect electrical performance, as stated above. Several different
methods of hermetic seal mounting and seal pin to microstrip trace
attachment are used in lbe industry.

Sea Level 70K Feet

After

Environmental

Initial

50 Ohm Connectors - Inches (Millimeters) - Customer Drawings Available Upon Request

2.92mm CONNECTORS

Stainless Steel Plated

145-0701-802

End Launch Jack - Screw-On Type





UNLESS OTHERWISE SPECIFIED

UNITS: INCH





DO NOT SCALE

DRAWING











Sheet 1 of 1







This PROPRIETARY Document

is property of Cinch Connectivity

Solutions. It is confidential in

nature, non-transferable, and

issued with the clear

understanding that it is not

traced or copied without

permission and is returnable

upon demand.

INTERPRET DRAWING IN

ACCORDANCE WITH ASME

Y14.5-2009.

.XX



.02

.XXX



.005

ANGLES



2 DEG

REV

ECO

DATE

ECO-17-0010

4/10/2017

RoHS2

2011/65/EU

R.SHEN

SEE NOTE

4/10/17

END LAUNCH JACK
SCREW-ON TYPE SMK(2.92mm)

145-0701-802

SPECIFICATION:

ELECTRICAL:

   IMPEDANCE:  50 OHMS
   FREQUENCY RANGE:  0-40 GHz
   VSWR: DEPENDANT ON APPLICATION
   WORKING VOLTAGE:  250 VRMS MAX AT SEA LEVEL
   DIELECTRIC WITHSTANDING VOLTAGE: 750 VRMS MIN AT SEA LEVEL
   INSULATION RESISTANCE: 5000 MEGOHM MIN
   CONTACT RESISTANCE:
        CENTER CONTACT - INITIAL 3 MILLIOHM MAX, AFTER
                                               ENVIRONMENTAL NOT APPLICABLE
        OUTER CONDUCTOR - INITIAL 2 MILLIOHM MAX, AFTER
                                                   ENVIRONMENTAL  NOT APPLICABLE
   RF LEAKAGE: -90dB TYPICAL AT 2.5GHz

MECHANICAL:
ENGAGEMENT/DISENGAGEMENT FORCE: 2 INCH-POUNDS MAX
CONTACT RETENTION: 6 LBS MIN AXIAL FORCE

MATING TORQUE: 7 TO 10 INCH-POUNDS

DURABILITY: 500 CYCLES MIN

ENVIRONMENTAL:
   OPERATING TEMPERATUR:  -40 TO 85°C
   THERMAL SHOCK: MIL-STD-202, METHOD 107, CONDITION B
   CORROSION: MIL-STD-202, METHOD 101, CONDITION B
   SHOCK: MIL-STD-202, METHOD 213, CONDITION I
   VIBRATION: MIL-STD-202, METHOD 204, CONDITION D
   MOISTURE RESISTANCE: MIL-STD-202, MEHTOD 106

PART NUMBER

145-0701-802

BRASS
NICKEL PL.00007 MIN
OVER COPPER STRIKE

ITEM 1
MAIN BODY

ITEM 3
CONTACT

ITEM 4
INSULATOR

ULTEM 1000 (MATING
END)
/TEFLON (SOLDER END)

BERYLLIUM COPPER
GOLD PL .00004 MIN(MATING END)
/ .00003 MIN(SOLDER END) OVER
NICKEL PL.00005 MIN OVER
COPPER PL.00005 MIN

NOTE: THIS PATTERN IS FOR REFERENCE ONLY.
PATTERN MAY VARY DEPENDING ON BOARD TYPE, SPECIFIC
ELECTRICAL OR MECHANICAL REQUIREMENTS.

RECOMMENDED PCB LAYOUT

.375

.110



.079

2 X

.340

.500



.749

.378

.394

.148

SEE DETAIL A

DETAIL A

.007



.012



.039



1/4-36UNS-2A

2X #1-72 SCREWS X .445" LENGTH
(.062 HEX)

.375

.188

ITEM 5
BOLT X 2

STAINLESS
STEEL

ITEM 6
WASHER X 2

STAINLESS
STEEL

.030

ITEM 2
MOUNTING BODY

STAINLESS STEEL
PASSIVATED

Stainless Steel Plated

145-0801-802

End Launch Jack - Screw-On Type





UNLESS OTHERWISE SPECIFIED

UNITS: INCH





DO NOT SCALE

DRAWING











Sheet 1 of 1







This PROPRIETARY Document

is property of Cinch Connectivity

Solutions. It is confidential in

nature, non-transferable, and

issued with the clear

understanding that it is not

traced or copied without

permission and is returnable

upon demand.

INTERPRET DRAWING IN

ACCORDANCE WITH ASME

Y14.5-2009.

.XX



.02

.XXX



.005

ANGLES



2 DEG

REV

ECO

DATE

ECO-17-0010

4/10/2017

RoHS2

2011/65/EU

R.SHEN

SEE NOTE

4/10/17

PANEL RECEPTACLE PLUG
2-HOLE FLANGE SMK(2.92mm)

145-0801-602

SPECIFICATION:

ELECTRICAL:

   IMPEDANCE:  50 OHMS
   FREQUENCY RANGE:  0-40 GHz
VSWR: 1.2 MAX.
   WORKING VOLTAGE:  250 VRMS MAX AT SEA LEVEL
   DIELECTRIC WITHSTANDING VOLTAGE: 750 VRMS MIN AT SEA LEVEL
   INSULATION RESISTANCE: 5000 MEGOHM MIN
   CONTACT RESISTANCE:
        CENTER CONTACT - INITIAL 3 MILLIOHM MAX, AFTER
                                               ENVIRONMENTAL NOT APPLICABLE
        OUTER CONDUCTOR - INITIAL 2 MILLIOHM MAX, AFTER
                                                   ENVIRONMENTAL  NOT APPLICABLE
   RF LEAKAGE: -90dB TYPICAL AT 2.5GHz

MECHANICAL:
ENGAGEMENT/DISENGAGEMENT FORCE: 2 INCH-POUNDS MAX
CONTACT RETENTION: 6 LBS MIN AXIAL FORCE

MATING TORQUE: 7 TO 10 INCH-POUNDS

DURABILITY: 500 CYCLES MIN

PART NUMBER

145-0801-602

STAINLESS STEEL
PASSIVATED

ITEM 1
BODY

ITEM 2
CONTACT

ITEM 3
INSULATOR

ULTEM 1000

BERYLLIUM COPPER
GOLD PL .00004 MIN
OVER NICKEL PL.00005
MIN OVER COPPER
PL.00005 MIN

.315 HEX

ITEM 4
NUT

STAINLESS
STEEL
PASSIVATED

ITEM 5
GASKET

SILICONE

.165



.065

.004

.508 REF

.481

.626



.224



.102 +.004

2 X

1/4-36UNS-2B



.305



.025 PIN

50 Ohm Connectors - Inches (Millimeters) - Customer Drawings Available Upon Request

2.92mm CONNECTORS

Stainless Steel Plated

145-0801-612





UNLESS OTHERWISE SPECIFIED

UNITS: INCH





DO NOT SCALE

DRAWING











Sheet 1 of 1







This PROPRIETARY Document

is property of Cinch Connectivity

Solutions. It is confidential in

nature, non-transferable, and

issued with the clear

understanding that it is not

traced or copied without

permission and is returnable

upon demand.

INTERPRET DRAWING IN

ACCORDANCE WITH ASME

Y14.5-2009.

.XX



.02

.XXX



.005

ANGLES



2 DEG

REV

ECO

DATE

ECO-17-0010

4/10/2017

RoHS2

2011/65/EU

R.SHEN

SEE NOTE

4/10/17

PANEL RECEPTACLE PLUG
2-HOLE FLANGE SMK(2.92mm)

145-0801-602

SPECIFICATION:

ELECTRICAL:

MECHANICAL:
ENGAGEMENT/DISENGAGEMENT FORCE: 2 INCH-POUNDS MAX
CONTACT RETENTION: 6 LBS MIN AXIAL FORCE

MATING TORQUE: 7 TO 10 INCH-POUNDS

DURABILITY: 500 CYCLES MIN

PART NUMBER

145-0801-602

STAINLESS STEEL
PASSIVATED

ITEM 1
BODY

ITEM 2
CONTACT

ITEM 3
INSULATOR

ULTEM 1000

BERYLLIUM COPPER
GOLD PL .00004 MIN
OVER NICKEL PL.00005
MIN OVER COPPER
PL.00005 MIN

.315 HEX

ITEM 4
NUT

STAINLESS
STEEL
PASSIVATED

ITEM 5
GASKET

SILICONE

.165



.065

.004

.508 REF

.481

.626



.224



.102 +.004

2 X

1/4-36UNS-2B



.305



.025 PIN

2-Hole Flange Mount Plug Receptacle

Stainless Steel Plated

145-0801-602

4-Hole Flange Mount Plug Receptacle





UNLESS OTHERWISE SPECIFIED

UNITS: INCH





DO NOT SCALE

DRAWING











Sheet 1 of 1







This PROPRIETARY Document

is property of Cinch Connectivity

Solutions. It is confidential in

nature, non-transferable, and

issued with the clear

understanding that it is not

traced or copied without

permission and is returnable

upon demand.

INTERPRET DRAWING IN

ACCORDANCE WITH ASME

Y14.5-2009.

.XX



.02

.XXX



.005

ANGLES



2 DEG

REV

ECO

DATE

ECO-17-0010

4/10/2017

RoHS2
2011/65/EU

R.SHEN

SEE NOTE

4/10/17

PANEL RECEPTACLE PLUG
4-HOLE FLANGE SMK(2.92mm)

145-0801-612

SPECIFICATION:

ELECTRICAL:

MECHANICAL:
ENGAGEMENT/DISENGAGEMENT FORCE: 2 INCH-POUNDS MAX
CONTACT RETENTION: 6 LBS MIN AXIAL FORCE

MATING TORQUE: 7 TO 10 INCH-POUNDS

DURABILITY: 500 CYCLES MIN

PART NUMBER

145-0801-612

STAINLESS STEEL
PASSIVATED

ITEM 1
BODY

ITEM 2
CONTACT

ITEM 3
INSULATOR

ULTEM 1000

BERYLLIUM COPPER
GOLD PL .00004 MIN
OVER NICKEL PL.00005
MIN OVER COPPER
PL.00005 MIN

.315 HEX

ITEM 4
NUT

STAINLESS
STEEL
PASSIVATED

ITEM 5
GASKET

SILICONE

1/4-36UNS-2B



.305



.025 PIN

.508 REF

.065



.102 +.004

4 X

.340

.500



.165



50 Ohm Connectors - Inches (Millimeters) - Customer Drawings Available Upon Request

2.92mm CONNECTORS

Hermetic Seal Feedthru

Jack to Jack In-Series Adapter

Jack Receptacle - Thread Mount Field Replaceable

Accepts Pin Size

Gold Plated

Passivated

.0120 +/- .0005 (0.305 +/- .013)

145-0701-001

145-0701 -002

Part Number

Item 1 - Outer Ring

Item 2 - Insulator

Item 3 - Pin

Environmental

Electrical

142-1000-033

Kovar
Gold pl .00005
min. over Nickel
pl .00005 min.

Glass
Corning 7070
or equivalent

Kovar
Gold pl .00005
min. over Nickel
pl .00005 min.

Hermeticity

1x10

cc/sec at

one atmosphere

Solderability

MIL-STD-202,

Method 209 Operating

Temperature:

-55° C to 165° C

Impedance:

50 Ohms

Frequency Range:

DC to 40 GHz

VSWR:

Dependent upon application

Working Voltage:

250 Vrms max al sea level

Dielectric Withstanding Voltage:

500 Vrms min. at sea level

Insulation Resistance:

5000 Megohm min.

Insertion Loss:

0.2 dB max at 40 GHz

Gold Plated

145-0901-801

Notes:

1. The hermetic seal should be mounted as flush as possible with the housing. Excessive recession will create a high impedance air gap between

connection and housing which degrades electrical performance.
2. The use of an additional counterbore to accommodate a solder ring for seal mounting is not recommended. A slight chamfer may be used if care is

taken to completely fill the area with solder -

avoid air gaps

50 Ohm Connectors - Inches (Millimeters) - Customer Drawings Available Upon Request

2.92mm CONNECTORS

2.92mm Solder Type Straight Plugs For Semi-rigid Cable

Tool

145-0693-001/002

145-0694-001/002

(FOR .086 SEMl·RIGIO) (FOR 141 SEMI-RIGID)

Semi-Riaid Cable Vise

140-0000-962

14 0-0000-962

Vise Stop

140-0000-968

Bead Assy. Tool

140-0000-957

Contact Soldering Tool 140-0000-960

140-0000-961

Body Soldering Tool

140-0000-958

140-0000-959

Cable Clamp Insert

140-0000-964

140-0000-965

Identify connector parts (5 piece parts) and tools (5 tools.)

Strip cable jacket and dielectric to dimension shown.

Place center contact onto center conductor. Slide contact soldering
tool onto contact. Clamp the cable contact and tool into cable soldering
vise and solder contact to center conductor.

High temperature

solder,

such as 95/5 Sn/Ag is recommended so that contact solder joint remains
stable during body soldering operation. Solder paste is recommended
for the contact solder joint to minimize excess solder. The assembled
dimension should be as shown.

Remove excess solder from contact with a sharp blade and clean
contact. Check for presence of excess solder by sliding body soldering
tool over the contact. Remove soldering tool.

Place connector nut and body on cable. Place connector body soldering
tool over contact and thread the coupling nut and connector body firmly
to the tool. Place cable subassembly into cable soldering vise. Clamp
cable and soldering tool securely to insure the cable dielectric expansion
will not disturb the cable in the vise during soldering, Place hot soldering
iron on the connector body sleeve and apply solder from the opposite
side.

A low temp

solder, such as 60/40 Sn/Pb is recommended for the

body solder joint. Allow the soldered joint to cool and remove from fix
ture. Check contact location to the body. The best electrical results are
achieved when the contact location is within a to lerance of .060 +/- .001.

Place bead onto neck portion of the tool. Thread Bead Assembly tool
firmly Into the coupling nut. Push the tool’s plunger between your thumb
and fingers to assemble the bead. Check bead location. Assemble seal
ring onto body.