Module Dimensions
Figure 3: 240-Pin DDR3 RDIMM
30.50 (1.20)
29.85 (1.175)
Pin 1
17.3 (0.68)
TYP
2.5 (0.098) D
(2X)
2.3 (0.091) TYP
5.0 (0.197) TYP
123.0 (4.84)
TYP
1.0 (0.039)
TYP
0.80 (0.031)
TYP
0.75 (0.03) R
(8X)
0.76 (0.03) R
Pin 120
Front view
133.50 (5.256)
133.20 (5.244)
47.0 (1.85)
TYP
71.0 (2.79)
TYP
9.5 (0.374)
TYP
Back view
Pin 240
Pin 121
1.37 (0.054)
1.17 (0.046)
4.0 (0.157)
MAX
2.2 (0.087) TYP
1.45 (0.057) TYP
3.05 (0.12) TYP
54.68 (2.15)
TYP
3.0 (0.118) 4X TYP
23.3 (0.92)
TYP
0.5 (0.02) R
(4X)
0.9 (0.035) TYP
1.0 (0.039) R (8X)
15.0 (0.59)
TYP
(4X)
3.1 (0.122) 2X TYP
5.1 (0.2) TYP
U1 U2 U3 U4 U5
U7
U6
U8 U9 U10 U11
U12 U13 U14 U15 U17 U18 U19 U20 U21
U1 U2 U3 U4 U5
U7
U6
U8 U9 U10 U11
U12 U13 U14 U15 U17 U18 U19 U20 U21
1.37 (0.054)
1.17 (0.046)
7.25 (0.285)
MAX*
* Without clip.
MAX width at the lower
clip edge, 8.32 (0.328)
Module with heat spreader attached
Notes:
1. All dimensions are in millimeters (inches); MAX/MIN or typical (TYP) where noted.
2. The dimensional diagram is for reference only.
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Micron and the Micron logo are trademarks of Micron Technology, Inc.
All other trademarks are the property of their respective owners.
This data sheet contains minimum and maximum limits specified over the power supply and temperature range set forth herein.
Although considered final, these specifications are subject to change, as further product development and data characterization some-
times occur.
2GB, 4GB (x72, ECC, DR) 240-Pin DDR3 SDRAM RDIMM
Module Dimensions
PDF: 09005aef83d9afa1
js-z-f18c256_512x72pdz.pdf – Rev. D 9/10 EN
19
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© 2010 Micron Technology, Inc. All rights reserved.
