Product Specification
Press-fit Cage
for Small Form-factor Pluggable (SFP) Transceiver
V23838-S5-N1
V23838-S5-N1-BB
PRODUCT FEATURES
V23838-S5-N1
• 3D foot design for improved press-fit
retention and contact to host board
holes
• One-piece, stainless steel construction
• Low emission design via fold-back
spring fingers – no openings for
radiation to pass through
• Enhanced transceiver kick-out springs
• Simple and fast installation/removal
• Host board holes not damaged when
cage is removed
• Heat transfer windows on all SFP cage
surfaces
• Supports MSA compliant host board
layouts and transceiver designs
File: 1142
V23838-S5-N1-BB
File: 1143
PRODUCT SELECTION
Part Number
Description
V23838-S5-N1
For single-sided mounting
V23838-S5-N1-BB
For double-sided "belly to belly" mounting
(see Figure 3)
© Finisar Corporation August 07, 2003 Rev. D
Page 1
V23838-S5-N1, V23838-S5-N1-BB Product Specification – August 2003
Description
Finisar is offering its cage for Small Form-factor Pluggable (SFP) transceivers with one
of the most rigid mechanical designs available on the market. The cage is designed for
press fit applications in order to reduce high volume manufacturing effort. Externally bent
bezel contact springs and one-piece construction enhance EMI performance.
Application Notes
• Testing of rear connector may take place before SFP Cage is installed onto host board
• SFP cage mounting holes should be plated with HASL, gold, or immersion silver finish
per MSA dimensional recommendations
• For double-sided mounting, host board thickness is .118 in [3.0 mm] minimum per the
MSA. For belly-to-belly applications, three mounting feet are removed to avoid
interference (V23838-S5-N1-BB)
• Supports any single sided, belly to belly, or offset belly to belly configuration with a
minimum pitch of 16.25 mm
• Installation of the SFP cage should be done with a solid metal block across the top
surface of the cage. Block dimensions to be controlled by customer
• Removal of the cage should be done with an internal solid metal block
• The Finisar SFP cage does not cause any damage when carefully removed; the
outside profile of the 3D feet is smooth and will not destroy pre-plated host board
mounting holes
• Trapped fluids from washing process must be dried to prevent corrosion beneath the
SFP cage
• Cage retention depends on finished hole size and plating thickness
© Finisar Corporation August 07, 2003 Rev. D
Page 2
V23838-S5-N1, V23838-S5-N1-BB Product Specification – August 2003
X
SFP Cage Host Board Mechanical Layout
1)
1) Datum and basic dimensions
established by customer
2) Pads and vias are chassis ground, 11 places
3) Thru holes, plating optional
34.5
10
3 PLACES
Y
1)
7.2
2.5
BSC
2.5
4.8
11.93
8.48
1.7
1.7
9.6
5.68
8.58
PIN 1
2) 2
11 PLACES
11.08
14.25
16.25
3.68
CROSS-HATCHED AREA DENOTES
COMPONENT AND TRACE KEEP-OUT
(EXCEPT CHASSIS GROUND)
∅0.85±0.05
⊕ ∅0.1 S X Y
A
2)
7.1
2)
2
11 PLACES
THIS AREA DENOTES
COMPONENT KEEP-OUT
(TRACES ALLOWED)
∅1.05±0.1
⊕ ∅0.1 L X A S
10 HOLES 2)
∅0.95±0.05
⊕ ∅0.1 L X A S
9 HOLES 3)
5
10
3 PLACES
26.8
41.3
42.3
Dimensions in mm
Figure 1
File: 1519
Single-sided Host Board Layout
16.25±0.1
[.640] 1)
1.7±0.9
3.5±0.3
10.4±0.1
10 REF
Y
15.25±0.1
[.600]
Y
SECTION Y-Y
0.4±0.1
BEZEL OPENING
BELOW PC BOARD
1) MINIMUM PITCH ILLUSTRATED, ENGLISH DIMENSIONS ARE FOR REFERENCE ONLY
NOT RECOMMENDED FOR PCI EXPANSION CARD APPLICATIONS
Dimensions in mm [inches]
Figure 2
File: 1520
Recommended Bezel Design
© Finisar Corporation August 07, 2003 Rev. D
Page 3
V23838-S5-N1, V23838-S5-N1-BB Product Specification – August 2003
V23838-S5-N1
SINGLE SIDED
MOUNTING
HOST PCB
CROSS SECTION
V23838-S5-N1-BB
BELLY TO BELLY
THREE FEET REMOVED
File: 1514
Figure 3
© Finisar Corporation August 07, 2003 Rev. D
Page 4
V23838-S5-N1, V23838-S5-N1-BB Product Specification – August 2003
Single-sided Application
File: 1515
Figure 4
File: 1516
Figure 5
© Finisar Corporation August 07, 2003 Rev. D
Page 5
V23838-S5-N1, V23838-S5-N1-BB Product Specification – August 2003
Belly to Belly Application
File: 1517
Figure 6
File: 1518
Figure 7
© Finisar Corporation August 07, 2003 Rev. D
Page 6
V23838-S5-N1, V23838-S5-N1-BB Product Specification – August 2003
Package Outlines
16.25
48.70
14
9
9.55
11.50
2.10
A
DETAIL A
Dimensions in mm
Figure 8
File: 1221
V23838-S5-N1
© Finisar Corporation August 07, 2003 Rev. D
Page 7
V23838-S5-N1, V23838-S5-N1-BB Product Specification – August 2003
16.25
48.70
14
9
11.50
9.55
2.10
A
DETAIL A
Dimensions in mm
Figure 9
File: 1222
V23838-S5-N1-BB
© Finisar Corporation August 07, 2003 Rev. D
Page 8
V23838-S5-N1, V23838-S5-N1-BB Product Specification – August 2003
Revision History:
Previous Version:
Page
August 07, 2003
Rev. D
July 08, 2003
Subjects (major changes since last revision)
Company name has been changed
Document’s layout has been changed
December 2004
For More Information
Finisar Corporation
1308 Moffett Park Drive
Sunnyvale, CA 94089-1133
Tel. 1-408-548-1000
Fax 1-408-541-6138
sales@finisar.com
www.finisar.com
© Finisar Corporation August 07, 2003 Rev. D
Page 9
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