Other Brush Contact Rectangular Connectors
LRM Hybrids and High Speed LRM Gigastak
& Digastak Inserts
LRM OPTIONAL HYBRID DESIGNS
• Custom combinations of digital contacts and fiber
optic termini. Optical performance of fiber optic termini
within LRM connectors are the same as termini used
in cylindrical connectors.** Insertion losses range from
.3dB to <1.5dB depending upon launch conditions,
fiber NA, fiber size and the type of termination. LRM
connectors are available with fiber optic termini in the
following configurations:
• Modified MIL-PRF-29504/4, /5, MIL-PRF-14 &
MIL-PF-15 termini - size 16, straight and 90
degree styles
• MT ferrule (2-24 fiber lines per ferrule)
• Hybrid arrangements with fiber optic and other
contact types
• LRM inserts with RF contacts
• LRM power supply modules with 270VDC sections
which are capable of providing corona-free operation
at 100,000 ft.
• Designs with high speed shielded contacts - coax,
triax, twinax, differential twinax, and quadrax contacts
• Combinations of power contact, standard brush, high
power, differential pair brush and fiber optic termini
• New designs that utilizes the RADSOK® high amper-
age socket contact with inserts.
The RADSOK® design is a socket cylinder within the
female contact which has several equally spaced
longitudinal beams twisted into a hyperbolic shape. As
the male pin is inserted, axial members in the female
half deflect, imparting high current flow across the
connection with minimal voltage loss. This twisted
hyperbolic grid ensures a large coaxial, face-to-face
surface area engagement.
• Incorporation of flex circuits for more versatility of PC
board terminations
• Custom shells with multiple bay configurations
• Backplane shell grounding capabilities
LRM INTERCONNECTS (SHOWN FROM TOP TO BOTTOM):
• LRM Backplane, 2 bays of staggered B3 brush contacts and inserts for
size 12 coax contacts
• LRM Module with Fiber Optic MT ferrules in one insert and B3 Brush in
a differential pair insert
• LRM inserts with PC tails
• LRM mating Module and Backplane with MT-PRF-29504 Fiber optic
termini and B3 Brush contacts
HIGH SPEED LRM GIGASTAK AND DIGASTAK
INSERTS
More and more speed is needed in today’s interconnec-
tion products. Amphenol has recently developed a new
family of high speed LRM connectors that are capable of
achieving data rates in excess of 6.25 Gbps via 100 ohm
matched impedance differential pairs. Each insert
arrangement has been optimized through strategic place-
ment of signal and ground contacts for the perfect
balance of impedance control and cross talk mitigation
for a given data rate. As an enhancement over the
standard LRM, this new series offers a unique solderless
termination to module cards via Amphenol Intercon’s
cStack technology.
** For more information on Amphenol fiber optic connectors and
termini, see the Fiber Optic section of Amphenol’s Combined Circular
Interconnects catalog, on-line at www.amphenol-aerospace.com.
HIGH SPEED LRM GIGASTAK AND DIGASTAK INSERTS
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