Amphenol LRM Surface Mount
Connectors Designer’s Guide
High Density Interconnect System with MIL-C-55302 type
Bristle® Brush® contacts available in three patterns.
GEN-X GRID
472 contacts LRM pattern -
.075 inch spacing along the row with .060 inch
between rows, offset .0375 inch (mating face)
STAGGERED GRID
360 contacts LRM pattern -
.100 inch spacing along the row with .050 inch
between rows, offset .050 inch (mating face)
CHEVRON GRID
300 contacts LRM pattern -
.075 inch spacing along the row with .075 inch
between rows, offset .025 inch (mating face)
This document contains the most common LRM drawings for designer’s reference only.
Contact Amphenol for verification of the latest drawing versions.
L-2081-2
Amphenol
®
1
This publication provides an engineering drawing package for use as a designer’s
guide to LRM surface mount connectors.
CAUTION - It is important that the designer check with Amphenol LRM product
representatives for the most current drawings, as these drawings included here may
become out-dated. The drawings are to be used as reference only, and all final
product ordering information should be verified with Amphenol.
Please contact Amphenol Aerospace at the address listed below:
Amphenol Corporation
Amphenol Aerospace
40 – 60 Delaware Avenue
Sidney, New York 13838-1395
Telephone: 607-563-5342 (New Products Development Group)
Fax: 607-563-5157
Publication L-2104, “Amphenol® LRM Surface Mount Connectors Reference Guide”,
gives general product data on LRM surface mount connectors, and should be used
in conjunction with this publication for additional information.
CONTENTS
TAB1 (Web Pg. 2)
GEN-X Grid Module Drawing Package
GEN-X Grid Module How to Order Part Numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .(9 Pages)
TAB 2 (Web Pg. 12)
GEN-X Grid Backplane Drawing Package
GEN-X Grid Backplane How to Order Part Numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .(4 Pages)
TAB 3 (Web Pg. 17)
Staggered Grid (Digital) Module Drawing Package
Staggered Grid (Digital) Module How to Order Part Numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . .(14 Pages)
TAB 4 (Web Pg. 32)
Staggered Grid (Digital) Backplane Drawing Package
Staggered Grid (Digital) Backplane How to Order Part Numbers . . . . . . . . . . . . . . . . . . . . . . . . .(10 Pages)
TAB 5 (Web Pg. 43)
Staggered Grid Hybrid Insert Illustrations
Staggered Grid Hybrid How to Order Part Numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .(4 Pages)
TAB 6 (Web Pg. 48)
Chevron Pattern LRM Connectors Insert Arrangements, Ordering Procedure . . . . . . . . . . . . . . . . . . (1 Page)
2
GEN-X Grid Pattern (472 contacts)
Drawing Package for
Double Bay
Module Connectors
Including how to order part numbers.
The LRM GEN-X 472 contact pattern allows for surface mount leads on
a .035 inch center line.
The following diagram shows the contact pattern of the GEN-X grid LRM
Connector, .075 inch spacing along the row with .060 inch between rows,
offset .0375 inch (mating face).
GEN-X
3
4
5
6
7
8
9
10
11
12
GEN-X Grid Pattern (472 contacts)
Drawing Package for
Double Bay
Backplane Connectors
Including how to order part numbers.
The LRM GEN-X 472 contact pattern allows for surface mount leads on
a .035 inch center line.
The following diagram shows the contact pattern of the GEN-X grid LRM
Connector, .075 inch spacing along the row with .060 inch between rows,
offset .0375 inch (mating face).
GEN-X
13
14
15
16
17
Staggered Grid Pattern (Digital)
Drawing Package for
Single, Double and 3-Bay
Module Connectors
Including how to order part numbers.
The LRM Staggered pattern allows for surface mount leads on a .025 inch
center line.
The following diagram shows the contact pattern of the staggered grid LRM
Connector, .100 inch spacing along the row with .050 inch between rows,
offset .050 inch (mating face).
STAGGERED
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Staggered Grid Pattern (Digital)
Drawing Package for
Single, Double and 3-Bay
Backplane Connectors
Including how to order part numbers.
The LRM Staggered pattern allows for surface mount leads on a .025 inch
center line.
The following diagram shows the contact pattern of the staggered grid LRM
Connector, .100 inch spacing along the row with .050 inch between rows,
offset .050 inch (mating face).
STAGGERED
33
34
35
36
37
38
39
40
41
42
43
Staggered Grid Pattern
Hybrid Insert Illustrations
Including how to order part numbers.
The LRM Staggered pattern allows for surface mount leads on a .025 inch
center line.
The following diagram shows the contact pattern of the staggered grid LRM
Connector, .100 inch spacing along the row with .050 inch between rows,
offset .050 inch (mating face).
STAGGERED
44
Staggered Grid, 360 Contacts
LRM Connectors
typical arrangements, how to order
MODULE BACKPLANE
10-507184-1** 10-507186-1**
10-507184-2** 10-507186-2**
10-507184-3** 10-507186-3**
10-507184-4** 10-507186-4**
10-507184-5** 10-507186-5**
10-507184-6** 10-507186-6**
10-507184-7** 10-507186-7**
Replace ** in desired part num-
ber with heat sink and total board
package thickness indicators
from MODULE suffix chart
(pg. 15).
Replace ** in desired part num-
ber with termination style and
termination stick-out indicators
from BACKPLANE suffix chart
(pg. 15).
KEY
ROC = “Reliable Optical Connector” (Not supplied with connector. Available from AT&T)
B3 = Digital contacts (i.e. standard brush)
Size 16 cavities will accept:
Fiber optic contacts M29504/1, /2, /14 & /15, or shielded contacts M39029/79 &
/80. (Note: these contacts are not supplied with connector and are available
from Hughes).
#8 & #12 Blind mate coax available from Amphenol - purchase separately
270 VDC power insert supplied with 2 size 22D MIL-C-38999, Series II power contacts.
80 B312 Size 12
COAX
80 B36 Size 8
COAX
SINGLE BAY HYBRID ARRANGEMENTS
108 B3270 VDC
108 B36 Size 12
COAX
76 B3 + 2 Size 16
76 B3 + 2 Size 16
152 B3ROC
152 B3
2 Sz
12
COAX
45
Staggered Grid, 360 Contacts
LRM Connectors
typical arrangements, how to order
MODULE BACKPLANE
10-507185-A** 10-507187-A**
10-507185-B** 10-507187-B**
10-507185-C** 10-507187-C**
10-507185-D** 10-507187-D**
10-507185-E** 10-507187-E**
10-507185-F** 10-507187-F**
10-507185-G** 10-507187-G**
Replace ** in desired part num-
ber with heat sink and total board
package thickness indicators
from MODULE suffix chart
(pg. 47).
Replace ** in desired part num-
ber with termination style and
termination stick-out indicators
from BACKPLANE suffix chart
(pg. 47).
KEY
ROC = “Reliable Optical Connector” (Not supplied with connector. Available from AT&T)
B3 = Digital contacts (i.e. standard brush)
Size 16 cavities will accept:
Fiber optic contacts M29504/1, /2, /14 & /15, or shielded contacts M39029/79 &
/80. (Note: these contacts are not supplied with connector and are available
from Hughes).
#8 & #12 Blind mate coax available from Amphenol - purchase separately
270 VDC power insert supplied with 2 size 22D MIL-C-38999, Series II power contacts.
80 B3
12 Sz 12 COAX
DOUBLE BAY HYBRID ARRANGEMENTS
80 B312 Sz 12 COAX
80 B3
6 Sz 8 COAX 80 B312 Sz 12 COAX
12 Sz 8 COAX 90 B3
90 B3
76 B3 + 2 Sz 16
76 B3 + 2 Sz 16
90 B3
90 B3
90 B3
90 B3
108 B3
6 Sz 12
COAX
90 B3
108 B3270 VDC
90 B3
76 B3 + 2 Sz 16
76 B3 + 2 Sz 16
152 B3
ROC 152 B3ROC
46
Staggered Grid, 360 Contacts
LRM Connectors
typical arrangements, how to order
MODULE BACKPLANE
10-507185-H** 10-507187-H**
10-507185-J** 10-507187-J**
10-507185-K** 10-507187-K**
10-507185-L** 10-507187-L**
Replace ** in desired part num-
ber with heat sink and total board
package thickness indicators
from MODULE suffix chart
(pg. 47).
Replace ** in desired part num-
ber with termination style and
termination stick-out indicators
from BACKPLANE suffix chart
(pg. 47).
KEY
ROC = “Reliable Optical Connector” (Not supplied with connector. Available from AT&T)
B3 = Digital contacts (i.e. standard brush)
Size 16 cavities will accept:
Fiber optic contacts M29504/1, /2, /14 & /15, or shielded contacts M39029/79 &
/80. (Note: these contacts are not supplied with connector and are available
from Hughes).
#8 & #12 Blind mate coax available from Amphenol - purchase separately
270 VDC power insert supplied with 2 size 22D MIL-C-38999, Series II power contacts.
DOUBLE BAY HYBRID ARRANGEMENTS, CONT.
152 B3
ROC
90 B3
80 B3
12 Sz 12 COAX
90 B3
90 B3
90 B3
90 B3
90 B3
90 B3
90 B3
76 B3 + 2 Sz 16
76 B3 + 2 Sz 16
152 B3
2
Sz 12
COAX
47
LRM Hybrid Connectors
part number suffixes
The following charts identify the part number suffixes to be used when ordering Hybrid LRM Connec-
tors. (Refer to preceding pages of Hybrid Arrangements and also to the Staggered Grid drawing pack-
ages in this document).
HYBRID MODULE SUFFIX CHARTS
HEATSINK THICKNESS
Suffix Description
1 .125 ± .005
2 .100 ± .005
3 .075 ± .005
4 .062 ± .005
5 .035 ± .005
TOTAL BOARD PACKAGE THICKNESS
Suffix Description
1 Surface Mount / .090 – .130 Package
2 Surface Mount / .130 – .190 Package
3 Surface Mount / .190 – .250 Package
4 Surface Mount / .060 – .100 Package
5 Surface Mount / .100 – .160 Package
6 Surface Mount / .160 – .220 Package
HYBRID BACKPLANE SUFFIX CHARTS
TERMINATION STYLE
Suffix Description - Dimension “F”
(See Staggered Grid Drawings)
1 .021 ± .002 Dia. PCB Tail
2 .016 ± .002 Dia. PCB Tail
3 .012 ± .002 Dia. PCB Tail
4N/A
5 Compliant
TERMINATION STICKOUT
Suffix Description - Dimension “G”
(See Staggered Grid Drawings)
1 .150 ± .020 (PCB)
2 .200 ± .020 (PCB)
3 .250 ± .020 (PCB)
4 .300 ± .020 (PCB)
5 .350 ± .020 (PCB)
6 .400 ± .020 (PCB)
7 .185 ± .020 (PCB)
8 .450 ± .020 (PCB)
9 .500 ± .020 (PCB)
C .157 ± .020 (Compliant, No Wrap)
D .217 ± .020 (Compliant, 1 Wrap)
E .317 ± .020 (Compliant, 2 Wrap)
F .417 ± .020 (Compliant, 3 Wrap)
48
Chevron Pattern
LRM Connectors
Insert arrangements
The LRM Chevron pattern allows for surface mount leads on a .025 inch
center line.
The following diagram shows the contact pattern of the chevron grid LRM
Connector, .075 inch spacing along the row with .075 inch between rows,
offset .025 inch (mating face).
CHEVRON
49
TO ORDER CHEVRON GRID LRM
CONNECTORS:
Consult Amphenol, Sidney, NY for availability and
part number ordering procedure.
Single Bay Connector
Contact Identification
Chevron Grid LRM Connectors
insert arrangements
Double Bay Connector
Contact Identification
Front of module connector shown. Backplane will be mirror image.
Triple Bay Connector
Contact Identification
