UHF coaxial RF connectors were one of the first RF connector series to be developed. UHF type connectors are general purpose, non-constant impedance connectors which operate from DC to 300 MHz. The 5/8"-24 thread coupling and clamp,crimp,twist-on, and solder terminations give the UHF the flexibility that has kept it one of the most popular coaxial connectors over the years.
Among the many applications of this low cost, low frequency device are antenna connections for CB radios, public address systems, audio, video, mobile radio, and test equipment.
UHF Plug
|
UHF Jack
|
|
|
|
Letter |
Minimum |
Maximum |
|
A |
11.56 |
12.22 |
|
B |
3.91 |
4.01 |
|
C |
8.76 |
- |
|
D |
1.19 |
4.27 |
|
E |
0.00 |
- |
|
F |
- |
9.91 |
|
G |
- |
11.10 |
| - |
- |
- |
|
|
Letter |
Minimum |
Maximum |
|
A |
14.00 |
14.25 |
|
B |
11.56 |
12.22 |
|
C |
11.10 |
- |
|
D |
7.87 |
- |
|
E |
1.19 |
1.96 |
|
F |
0.03 |
- |
|
G |
11.76 |
- |
|
H |
1.02 |
- |
|
UHF Connector Electrical Ratings
| Impedance |
non-constant 50 ohm |
|
| Frequency Range |
0-300 MHz |
|
| VSWR |
1.25 GHz max |
|
| Voltage Rating(in VRMS at sea level) |
500 max |
|
| Dielectric Withstanding Voltage(in VRMS at sea level) |
1500 min |
|
| RF Leakage |
-90 dB min @ 2.5 GHz |
|
| Insertion Loss |
.1 dB max @ 2.5 GHz |
|
| Insulation Resistance |
5000 M min |
|
| Contact Resistance |
Center Contact |
Outer Contact |
| 1.0 m max |
0.5 m max |
UHF Connector Mechanical Ratings
| Mating |
5/8-24UNEF threaded coupling |
|
| Durability |
500 matings max |
|
| Cable Retention |
RG-174,188,316 |
20 lbs min |
| |
RG-58,142,223,400 |
40 lbs min |
| |
RG-59,62,210 |
40 lbs min |
| |
RG-8,11,213,214 |
80 lbs min |
| Temperature Range |
-55C to +85C |
|
| Vibration |
MIL-STD-202, Method 204, Test Condition A |
|
| Corrosion |
MIL-STD-202, Method 101, Test Condition B |
|
|
Materials
| |
|
Material |
Plating |
|
Connector Body |
|
Brass per QQ-B-626 |
Nickel |
|
Center Contact |
Male |
Brass per QQ-B-626 |
Gold |
| |
Female |
Beryllium Copper per QQ-C-530, or Phospher Bronze per QQ-C-750 |
Gold |
|
Insulator |
|
Teflon, Delrin, Polypropylene |
None |
|
Crimp Ferrule |
|
Annealed Copper per WW-T-799 |
Same as body |
