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SMA


The SMA threaded interface connectors are designed for higher frequency applications where maximum reliability and robustness is required.

This connector range is suitable for the standard ranges of flexible and semi rigid cables and is also available in PCB and panel mount versions.

The characteristic impedance of the SMA coaxial connector is 50 ohm.

Two ranges of the SMA connectors are available: The standard range is manufactured with brass housings and the special range is manufactured with stainless steel housings.

SMA coaxial connectors meet the specification of IEC 169-15 and MIL-C-39012.


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Electrical characteristics

Impedance

50 Ohm

Operating frequency
   Semi-rigid cable
   Flexible Cable

 
DC-18 GHz
DC-12,4 GHz

VSWR-Value
   Straight connector semi-rigid cable
   Angle connector semi-rigid cable
   Straight connector flexible cable
   Angle connector flexible cable

 
1,02 + 0,010 f (GHz)
1,04 + 0,015 f (GHz)
1,03 + 0,010 f (GHz)
1,05 + 0,030 f (GHz)

Withstand voltage
(depending on cable type)
   Semi-rigid cable
   Flexible cable

 
 
≥ 1000 V / 50 Hz
≥ 750 V / 50 Hz

Operating voltage
(depending on cable type)
   Semi-rigid cable
   Flexible cable

 
 
≤ 335 V / 50 Hz
≤ 250 V / 50 Hz

Insertion loss
   Straight connector semi-rigid cable
   Angle connector semi-rigid cable
   Straight connector flexible cable
   Angle connector flexible cable

 
0,03 √ f (GHz) dB
0,05 √ f (GHz) dB
0,03 √ f (GHz) dB
0,07 √ f (GHz) dB

RF-leakage
   Straight and angle connector
   Semi-rigid cable
   Straight and angle connector
   Flexible cable

 
≥ 100 dB-f (GHz)
≥ 100 dB-f (GHz)
≥ 60 dB-f (GHz)
≥ 60 dB-f (GHz)

Insulation resistance

≥ 10 GOhm

Contact resistance
   Center contact
   Outer contact

 
≤ 3 mOhm
≤ 2 mOhm

Current carrying capacity

≤ 2 A DC

Admissible power
(depends on: Frequency, Application, VSWR,
Environmental specification Characteristics)

Data on request

Intermodulation parameters

Data on request


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Mechanical characteristics

Coupling nut torque
   Recommended: Standard (Brass)
   Recommended: Special (Stainless steel)
   Max.: Standard (Brass)
   Max.: Special (Stainless steel)

 
0,45 Nm (4 in.-lbs)
0,8 - 1,1 Nm (7 - 9,7 in.-lbs)
0,6 Nm (5,3 in.-lbs)
1,7 Nm (15 in.-lbs)

Retention force of coupling nut

> 270 N (60 lbs)

Mating cycles

> 500


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Environmental specification

Operating temperature range

-55 °C (-67 °F) up to
+125 °C (257 °F)

Test categories

DIN 40045 / IEC 55/125/56

Relative humidity

MIL-STD-202
Method 106

Thermal shock

MIL-STD-202
Method 107
Cond.B

Shock

MIL-STD-202
Method 213
Cond.I

Vibration

MIL-STD-202
Method 204
Cond.D

Corrosion

MIL-STD-202
Method 101
Cond.B


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Materials

Housing / Coupling nut: Standard
Housing / Coupling nut: Special

Brass
Stainless Steel

Center contact

Brass

Spring loaded contacts

Copper beryllium
Bronze

Spring washer

Bronze

Crimp ferrule

Copper
Brass

Lock washer

Bronze

Insulator

PTFE

Gasket

Silicone rubber

All products are RoHS conform.


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Plating

Housing Standard

Au, White bronze

Stainless steel Special

passivated

Center contact

Au

Spring loaded contacts

Au

Crimp ferrule

Au, White bronze

Lock washer

Au, White bronze

Other platings on request.


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Interface dimensions

Plug

Jack

 

Plug

Jack

mm

mm

min.

max.

min.

max.

A

 

4,59

4,6

4,67

B

 

0,25

 

0,25

C

 

0,18 (1)

 

0,18 (1)

D

 

2,54

2,92 (2)

 

E

1,24

1,29

1,24

1,29

F

0,38

1,14

1,88

1,98

G

 

3,43

0,38

1,14

H

0,9

0,94

5,28

5,49

I

 

 

4,32

 

K

 

 

5,54

 

L

 

0,38

 

 

Z

1/4-36 UNS-2B

1/4-36 UNS-2A


(1) IEC Norm plug
(2) IEC Norm jack


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Some connectors may have a specification that differs from the above mentioned data.

Related products

 

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SMA
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