Amphenol® LMD and LMS Modular Connectors
for Rack & Panel or Cable Attachment
Amphenol
Aerospace
INTRODUCTION: FEATURES, BENEFITS, PERFORMANCE
LMD Modular Connectors
The LMD Connector Series was designed by Amphe-
nol Pyle-National to provide flexibility in the assembly
of wire harnesses that are used in instrumentation and
avionic control environments. The modular design of
the LMD provides rack and panel or cable to cable
attachment.
Design Features of LMD Connectors
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An LMD Connector is comprised of a housing,
modules and contacts - each ordered separately,
requiring assembly
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Lightweight housings are offered in two materials
• standard black thermoplastic
LMD Receptacle and Plug
• high performance composite material for EMI
shielding
• white thermoplastic nylon material with increased
solvent resistance
LMD Benefits
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Reduces assembly and production costs
Eliminates costly PC board and associated hardware
Reduces inventory levels and associated costs
Allows for a variety of circuit configurations
Permits ease of circuit upgrading
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Four standard modules are available with the
following contact arrangements: 1 #8, 4 #16, 9 #20,
16 #22
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Modules are available in sealed and unsealed
versions
Facilitates equipment maintenance
Linear module design may be used for rack and
panel or cable to cable applications
LMD Performance Characteristics
Bussing modules available to allow for a plurality of
circuit network configurations without extra
hardware
Temperature Rating
–55° C to +140° C (-67 ° F to + 284° F)
Insulation Resistance
(min.)
5000 megohms initial: 1000 megohms after 96
hours humidity
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Diode modules provide a current protection system
for avionic instrumentation packages and eliminate
the need for dedicated PC boards and other
hardware
Durability
Vibration
250 cycles (mating and unmating)
Maximum discontinuity of one microsecond
when subjected to sinusoidal vibration of 10 to
2000 Hz at 15 gravity units
Maximum discontinuity of one microsecond
when subjected to 1/2 -sine-wave transient
shock of 50 gravity units with pulse duration of
11 milliseconds
Miniature relay modules can be added which
eliminate the need for printed circuit boards and
hardware
Physical Shock
Module Insertion &
Removal Force
5 lbs. maximum
70 lbs. minimum
Module Retention
LMS Modular Connectors
Supplementing the LMD connector family, Amphenol/Pyle
National offers the LMS in-line splice connector; a low cost
interconnects that incorporates the LMD modules and contacts.
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Standard LMS splice connector - 3-piece assembly with
module removal tool access
Tool-less splice connector - 3-piece assembly with a
push-button module release for easy module removal
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Two-piece bracket available for panel mounting
Used in wire harness, instrument and equipment
terminations and test points
LMS Tool-less Splice Connector
100
Contact Amphenol Aerospace for more information at 800-678-0141 • www.amphenol-aerospace.com