FEATURES
• Low loss with excellent stability
• Fully vapor sealed for system longevity
• Flexible and highly ruggedized for severe
environments
MILTECH
®
340
HIGH PERFORMANCE MICROWAVE ASSEMBLIES
MILTECH
®
Assemblies are the qualified family
of hermetically sealed flexible RF and microwave
transmission line assemblies that are optimized
and qualified for commercial, military airborne
and other demanding applications.
Diameter
Weight
Minimum Bend Radius
Operating Temperature
Maximum Frequency
Capacitance
Delay
Specifications
Units
in (mm) 0.34 (48.3)
lb/ft (kg/m ) 0.105 (157)
in(mm) 1.90 (48.3)
Fº 67 to 392
GHz 18.5
pF/ft (pF/m) 2 7. 5 (90.1)
ns/ft (ns/m) 1.25 (0.381)
1
2 3 4
5
6 7
Center Conductor
Dielectric
First Shield
Interlayer
1
2
3
4
Silver Plated Copper
Taped PTFE
Silver Plated Copper
Aluminum Backed Tape
5
6
7
Silver Plated Copper Braid
Composite Tape/Extruded FEP
Nomex®
Second Shield
Vapor Shield
Outer Jacket
IL = (K1 x √(f) + K2 x f) x Cable Length + Connector Loss
dB/100 ft
3.3
6.7
11.9
15.7
21.6
dB/100 m
10.7
21.9
39.6
51.4
70.9
Cable Insertion Loss at
typical Frequencies
Quick Reference
500 MHz
2000 MHz
6000 MHz
10000 MHz
18000 MHz
0.1436
0.0001304
0.471008
0.000428
K1
K2
Loss per Connector
500
1000
2000
4000
6000
8000
10000
12000
14000
16000
18000
0.0375 0.1375
0.05 0.15
0.075 0.175
0.1 0.2
0.11 0.21
0.125 0.225
0.135 0.235
0.14 0.24
0.15 0.25
0.155 0.255
0.237 0.318
Frequency
MHz
Straight Angled
K Values
Cable Insertion Loss
Length unit must
match K value unit.
f = Frequency in MHz
dB/100 ft dB/100 m
ATNC Plug SD48555 0.62 (18)
ATNC Plug 45º SD48576 0.32 (38)
ATNC Plug 90º SD48573 1.50 (43)
ATNC Jack SD48601 0.62 (18)
ATNC Jack BKHD SD48590 0.79 (23)
ATNC 90º Jack BKHD SD48609 1.58 (45)
N Plug SD 48721 0.97 (28)
N Plug 90º SD48628-1 2.06 (59)
N Jack 90º BKHD SD48629 2.90 (83)
N Jack BKHD SD48667 1.25 (36)
SC Plug SD48642 1.65 (47)
SC Jack BKHD SD48680 2.50 (71)
SMA Plug SD48530 0.62 (18)
SMA Plug 90º SD48608 1.02 (30)
TK Plug SD48554 0.73 (21)
WORLD HEADQUARTERS
358 Hall Avenue, Wallingford, CT 06492
1-800-867-2629
MILTECH
®
340
HIGH PERFORMANCE MICROWAVE COAXIAL CABLE
ATNC Plug SD48606 1.06 (30)
ATNC Plug 90º SD48645 2.11 (60)
N Plug SD48669 1.55 (44)
SMA Plug SD48689 1.30 (37)
SMA Plug 90º SD48688 0.70 (20)
TNC Plug 45º SD48674 2.15 (61)
Standard Replaceable Connectors
Self-Locking Replaceable Connectors
Connector Type
Connector Type
Part Number
Part Number
Weight oz/g
Weight oz/g
Other connectors available
Global manufacturing
capability:
US, and Asia.
Heritage—in
the air and on
the ground,
thousands of
assemblies built
over decades
Assembled and tested
MilTech assemblies
provide assured
performance