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参数资料
| 型号： | 145-0701-612 |
| 厂商： | Emerson Network Power Connectivity Johnson |
| 文件页数： | 2/2页 |
| 文件大小： | 0K |
| 描述： | CONN SMK JACK RCPT 4-HOLE FLANGE |
| 产品目录绘图： | 145-0701-612 |
| 标准包装： | 25 |
| 系列： | SMK |
| 连接器类型： | SMK |
| 连接器类型： | 插孔，母插口 |
| 触点终端： | 焊接 |
| 阻抗： | 50 欧姆 |
| 安装类型： | 面板安装，方形法兰 |
| 紧固型： | 有螺纹 |
| 频率 - 最大： | 40GHz |
| 包装： | 散装 |
| 产品目录页面： | 467 (CN2011-ZH PDF) |
| 其它名称： | J693 |
SMK - 50 Ohm Connectors (2.92mm)
INCHES (MILLIMETERS) ?
The eld replaceable connectors manufactured by Johnson Components
below, a test xture is created using the Johnson Components SMK her-
1. For optimum electrical performance, Johnson Components recommends
ELECTRICAL RATINGS
Impedance: 50 ohms
Frequency Range: 0-40 GHz
VSWR: (f = GHz)
Semi-rigid straight cabled connectors and adapters .............. 1.20 Max
Field replaceable ( see typical return loss graph) ............................ N/A
Working Voltage: (Vrms maximum)
Connectors for Cable T ype Sea Level 70K Feet
.086 semi-rigid and eld replaceable......................... 335 85
.141 semi-rigid and adapters ..................................... 500 125
Dielectric Withstanding Voltage: (VRMS minimum at sea level)
.086 semi-rigid and eld replaceable............................................. 1000
.141 semi-rigid and adapters ......................................................... 1500
Corona Level: (Volts minimum at 70,000 feet)
.086 semi-rigid and eld 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) Initial After Environmental
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 eld replaceable.............................................. 670
.141 semi-rigid and adapters ........................................................ 1000
ENVIRONMENTAL RATINGS
(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
FIELD REPLACEABLE TEST ASSEMBLY
FIELD REPLACEABLE APPLICATION NOTES
?
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 eld 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 e ects 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 ? eld replaceable SMK connector. To produce the data shown
?
metic seal. The xture consists of a suitably thick spacer plate with the
hermetic seal mounted ush to both surfaces. Two connectors are mounted
back to back around the xture 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 eld replaceable
connector and its transition to the hermetic seal.
Although Johnson Components ? does not publish a VSWR speci cation
for eld replaceable connectors, typical connector return loss can be ex-
pected to be less than -20 dB through 40 GHz. A VSWR speci cation is not
stated because an industry standard method for testing eld replaceable
connectors does not exist. The actual performance of the connector is
dependent upon the following:
?
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 ush with the cir-
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 ? does not recommend this type of
installation because if the counterbore is not completely lled with solder,
electrical discontinuities may be created.
3. The transition between the hermetic seal pin and the microstrip trace will
e ect electrical performance, as stated above. Several di erent meth-
ods of hermetic seal mounting and seal pin to microstrip trace attach-
ment are used in the industry.
,
Emerson Network Power Connectivity Solutions
299 Johnson Avenue SW, Waseca, MN 56093 ? 800 -247- 8256 ? +1 (507) 833-8822 ? www.EmersonConnectivity.com
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