
TWINAX/TRIAX CONNECTORS
16
Features
• Standard TRB/MIL-C-49142
• Glass to Metal Seals
• Sustains Extreme Temperature Ranges
• Stainless Steel or Nickel Plated Brass Body
• Gold Plated Contacts
Benefits
• Mechanical and Environmentally Reliable Method
• Wide Range of Application Usage
• More Cost Effective than Stainless Steel
• Reliable Connections
.437 HEX
.402
1.050
.093 DIA
.375 HEX NUT
.3125-32UNEF-2A
SOLDER POT
ACCEPTS
.034 MAX
DIA
CONDUCTOR
GASKET
.469 DIA
.727 REF
Hermetically Sealed
Miniature Twinax/Triax
Feed-thru Bulkhead Mount
BJ78HS, BJ378HS
(Threaded Version Not Shown)
Mounting Hole: D3.187
Insulated Version
BJ73HS
(Not Shown)
Mounting Hole: D2.187
Mounting Hole: D3.160
“D” mounting holes see page 54.
Mounting Hole: D4.200
Mounting Hole: D3.160
Note: Only a select few of our hermetically sealed connectors are shown here.
Contact customer service for more information.
.140 DIA
.892
.600 DIA
1.050
.750
.100
A HEX NUT
.4375-28UNEF-2A
SOLDER POT
ACCEPTS .034
DIA CONDUCTOR
WIRE HOLE
ACCEPTS .027
DIAMETER
CONDUCTOR
.625 HEX NUT
.500-28UNEF-2A
.437 WRENCH
FLATS
.15
.840
1.09
.690 DIA
.56 HEX NUT
.500-28UNEF-2A
.437 WRENCH
FLATS
.15
.800
1.09
.690 DIA
.775
1.290
.500-28UNEF-2A
.562 HEX NUT
.730 DIA
.562
DIA
.380
DIA
.062
.487
.765
.428
.500 HEX NUT
.4375-28UNEF-2A
.15
.892
BJ78HS Shown
Mounting Hole: D4.125
Hermetically Sealed
Bulkhead Jack
3-lug.......... BJ157HS
4-lug....... BJ157FLHS
Twinax/Triax Connectors / Hermetically Sealed Connectors
Concentric Twinax/Triax
Hermetic seals prevent leakage through the bulkhead from inside
of the connector. Trompeter’s miniature size hermetically sealed
connectors include the feed-through BJ78HS, the front mounted
BJ77HS, the rear mounted BJ79HS and BJ379HS. In the subminiature
size we offer the front mounted BJ157HS and BJ157FLHS (four lug
version). The BJ3150HS and BJ3150SHS offer a threaded rear mount
version with a safety wire option. These connectors have leakage
rates of 1x10-8 atm cc/second. The 150 Series have leakage rates of
1x10-6 atm cc/second.
These connectors meet MIL-C-49142 specications. Standard non-
hermetic connector types such as the BJ78 could leak between
the contacts and dielectrics. Hermetically sealed connectors are
designed for bulkhead mounting in vacuum chambers or where
toxic and other gases are present. Hermetic connectors are highly
benecial in reactors, gas/petro plants, oil drilling sites, liquid test
and measurement, commercial, military, industrial and space
applications. They are reliable under the most severe atmospheric
conditions.
Hermetically Sealed Bulkhead Jack
Subminiature Twinax/Triax
Rear Mount (A=.500)............................. BJ3150HS
Solder Pot Bulkhead (A=.562)................ BJ3150SHS
Hermetically Sealed Bulkhead Jack
Miniature Twinax/Triax TRT/Threaded
BJ376HS
Hermetically Sealed
Bulkhead Jack
Front Mount
BJ77HS
Mounting Hole: D6.187
Hermetically Sealed
Miniature Twinax/Triax
Rear Mount Bulkhead Jack
Rear Mount, Bulkhead Mount
BJ79HS