145-0701-612 JOHNSON/EMERSON, 145-0701-612 Datasheet - Page 2

• Manufacturer Part Number: 145-0701-612
• Description: RF/COAXIAL, SMA JACK, STRAIGHT, 50OHM
• Manufacturer: JOHNSON/EMERSON

Specifications of 145-0701-612

• Body Style: Straight Jack
• Contact Material: Beryllium Copper
• Contact Plating: Gold
• Frequency Max: 40GHz
• Connector Mounting: Panel
• Connector Type: SMK Coaxial
• Impedance: 50ohm
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Impedance: 50 ohms
Frequency Range: 0-40 GHz
VSWR: (f = GHz)
Working Voltage: (Vrms maximum)
Connectors for Cable Type
Dielectric Withstanding Voltage: (VRMS minimum at sea level)
Corona Level: (Volts minimum at 70,000 feet)
Insertion Loss: (dB maximum)
Insulation Resistance: 5000 megohms minimum
Contact Resistance: (milliohms maximum) Initial After Environmental
RF Leakage: (dB minimum, tested at 2.5 GHz) ............................. -90dB
RF High Potential Withstanding Voltage: (Vrms minimum, tested at 4
and 7 MHz)
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
SMK - 50 Ohm Connectors (2.92mm)
INCHES (MILLIMETERS)
Semi-rigid straight cabled connectors and adapters .............. 1.20 Max
Field replaceable (see typical return loss graph) ............................ N/A
.086 semi-rigid and field replaceable......................... 335
.141 semi-rigid and adapters ..................................... 500
.086 semi-rigid and field replaceable............................................. 1000
.141 semi-rigid and adapters ......................................................... 1500
.086 semi-rigid and field replaceable............................................... 250
.141 semi-rigid and adapters ........................................................... 375
Adapters ................................................ 0.06
Straight semi-rigid cable connectors ....... 0.03 f (GHz), tested at 10 GHz
Center contact straight cabled connectors ... 3.0*
Center contact adapters ................................ 4.0
Field replaceable connectors ........................ 6.0
Outer contact (all connectors) ....................... 2.0
Body to cable (gold plated connectors) ......... 0.5
Body to cable (passivated connectors) ......... 5.0
.086 semi-rigid and field replaceable.............................................. 670
.141 semi-rigid and adapters ........................................................ 1000
(Meets or exceed the applicable paragraph of MIL-C-39012)
=
FIELD REPLACEABLE TEST ASSEMBLY
•
Johnson Components
CUSTOMER DRAWINGS AVAILABLE UPON REQUEST
ENVIRONMENTAL RATINGS
ELECTRICAL RATINGS
™
• P.O. Box 1732 • Waseca, MN 56093-0832 • 1-800-247-8256 • Fax: [phone] • www.johnsoncomponents.com
f (GHz), tested at 6 GHz
Sea Level 70K Feet
N/A
N/A
N/A
4.0
6.0
8.0
125
85
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 de-
stroying the hermeticity of the circuit housing.
The field replaceable connector creates a transition from microstrip circuitry
to a coaxial transmission line. The SMK (2.92mm) seal pin diameter is .012
(.030) to minimize the capacitive effects on the circuit trace. For optimum
electrical performance, the 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
below, a test fixture is created using the Johnson Components
metic 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 test 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
for field replaceable connectors, typical connector return loss can be ex-
pected 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
2. It is recommended that the hermetic seal be mounted flush with the cir-
3. The transition between the hermetic seal pin and the microstrip trace will
the use of our standard 142-1000-033 hermetic seal with a pin diameter
of .0120 (0.305) +/- .0005 (0.013).
cuit housing. Tolerance variations between the hermetic seal and ma-
chined 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
installation because if the counterbore is not completely filled with solder,
electrical discontinuities may be created.
effect electrical performance, as stated above. Several different meth-
ods of hermetic seal mounting and seal pin to microstrip trace attach-
ment are used in the industry.
™
FIELD REPLACEABLE APPLICATION NOTES
field replaceable SMK connector. To produce the data shown
™
does not publish a VSWR specification
™
does not recommend this type of
™
recommends
™
SMK her-
™
,