| SMB SERIES- SubMinature version B Coaxial Connector |
| |
| 1. |
Developed in the 1960's, the SMB connector is a smaller version of the SMA connector with snap-on coupling mechanism. |
| |
| 2. |
The connector utilizes an inner contact and overlapping dielectric insulator structures to ensure good connectivity and a constant impedance. |
| |
| 3. |
It is specified in tow impedances, namely 50 and 75 ohms. The 50 ohm version of the SMB connector is
" generally specified up to 4 GHz, but the 75 ohm versions one is normally only specified to 2 GHz." |
| |
|
|
Application
|
|
● Base Stations
● Automotive
● Components
● Surge Protection
● Video Systems
● Instrumentation
● Automotive (GPS)
|
● Cable Assemblies
● Telecom
● Process Controls
● PC/LAN
● Radio Boards
● Test and
● Measurement
|
|
|
| |
|
| |
| ● Technical Characteristics |
| Electrical |
|
Impedance
|
50 ohm/ 75 ohm
|
|
Frequency Range
|
0 - 4 GHz with low reflection
|
|
Working Voltage
|
500 VRMS max. : RG-58, 141,142, 223 335 VRMS max. : RG-174, 188, 316 250 VRMX max. : RG-178, 196:
|
|
Dielectric Withstanding Voltage
|
1000 VRMS : RG-58, 141,142, 223 1000 VRMS : RG-174, 188, 316 750 VRMS : RG-178, 196
|
|
VSWR
|
Straight
|
1.3 max.
|
|
Right Angle
|
1.4 max.
|
|
Contact Resistance
|
Center Contact
|
6 Milliohms Max.
|
|
Outer Contact
|
2 Milliohms Max.
|
|
Insertion Loss
|
0.3dB@1.5GHz(Straight)
0.6dB@1.5GHz(Right Angle)
|
|
Insulator Resistance
|
1,000 Mega ohms min.
|
|
| |
| Material |
|
Part Name
|
Material
|
Surface Treatment
|
|
Body, Metal Parts
|
Brass
|
Gold or Nickel Plating
|
|
Center Contacts
|
Plug: P. Bronze or Beryllium Copper
|
Gold Plating
|
|
(Reverse Polarity)
|
Jack: Brass
|
Gold Plating
|
|
Insulator
|
PTFE
|
None
|
|
Crimp Ferrule
|
Annealed Copper
|
Gold or Nickel Plating
|
|
Clamp Gaskets
|
Silicone Rubber
|
None
|
|
| |
| Mechanical |
|
Mating
|
Snap-on coupling per MIL-STD-348
|
|
Engagement Force
|
1.8lbs. to 14.2lbs
|
|
Disengagement Force
|
1.8lbs. to 14.2lbs
|
|
Contact Retention
|
4.0 lbs. min. axial force (captivated contacts)
|
|
Durability (Mating)
|
500 cycles mating & unmating cyles @12 cycles per min. (For Be/Cu Jack Contact only)
|
|
| |
| Environmental |
|
Temperature Range
|
-65°C to 165°C / - 85℉ to 329℉
|
|
Vibration
|
MIL-STD-202 Method 204/Test cond. D
|
|
Corrosion
|
MIL-STD-202 Method 101 (Test cond. B) 5% Salt solution
|
|
Thermal Shock
|
MIL-STD-202 Method 107/Test cond.B
|
|
| |
Note: These characteristics are typical but may not apply to all connectors. |
| |
