Product Specification
Fiber Optics Cage
for Small Form Factor Pluggable (SFP) Transceiver
V23818-S5-N1
V23818-S5-N1-BB
PRODUCT FEATURES
Supports MSA compliant host board
layouts and transceiver designs
One-piece, rigid stainless steel
construction with tin-lead plating
Simple and fast installation/removal
Solid retention strength
Easily press fit onto host board via tear-
drop foot design
Testing of rear connector may take place
before SFP Cage is installed onto host
board
Low emission design via fold-back
spring fingers – no openings for radiation
to pass through
Enhanced transceiver kick-out and retention springs
Heat transfer windows on all SFP Cage surfaces
Cage can be press fit and/or soldered
DESCRIPTION
Finisar is offering its Cage for Small Form Factor Pluggable (SFP) transceivers
with the most rigid mechanical design available on the market. The Cage is designed
for press fit applications in order to reduce high volume manufacturing effort. Press
fit pins can be also soldered if required. Externally bent bezel contact springs and
one-piece construction enhance EMI performance. As part of Finisar's Total
Transceiver Solution, the SFP Cage is your logical choice for next generation
pluggable transceivers.
Part Number Description
V23818-S5-N1 For single-sided mounting
V23818-S5-N1-BB
For double-sided "belly to belly" mounting
(see Figure3)
© Finisar Corporation 2002-10-07 DSO 1
V23818-S5-N1, V23818-S5-N1-BB Product Specification – 2002-10-07
APPLICATION NOTES
For single-sided mounting, optimum host board thickness is .059to.062in
[1.5to1.57mm]. 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 .118in [3.0mm] minimum per
the MSA. For belly-to-belly applications, one of the rear mounting feet is
removed to avoid interference (V23818-S5-N1-BB)
Installation of the SFP Cage may be done by hand or 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. Due to
the collapsing nature of the teardrop foot design, the Finisar SFP Cage is intended
for one-time installation
The Finisar SFP Cage does not cause any damage when carefully removed; the
outside profile of the teardrop 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
SFP Cage
Cage retention depends on finished hole size and plating thickness
SYSTEM CONFIGURATIONS
Single-sided mounting with .640in [16.25mm] pitch
Double-sided "belly to belly" mounting with .640in [16.25mm] pitch
Double-sided "offset belly to belly" mounting with .975in [24.77mm] pitch
© Finisar Corporation 2002-10-07 DSO 2
V23818-S5-N1, V23818-S5-N1-BB Product Specification – 2002-10-07
Figure 1 Single-sided Host Board Layout
Figure 2 Single-sided Layout
© Finisar Corporation 2002-10-07 DSO 3
V23818-S5-N1, V23818-S5-N1-BB Product Specification – 2002-10-07
Figure 3
© Finisar Corporation 2002-10-07 DSO 4
V23818-S5-N1, V23818-S5-N1-BB Product Specification – 2002-10-07
Single-sided Application
Figure 4
Figure 5
© Finisar Corporation 2002-10-07 DSO 5
V23818-S5-N1, V23818-S5-N1-BB Product Specification – 2002-10-07
Belly to Belly Application
Figure 6
Figure 7
© Finisar Corporation 2002-10-07 DSO 6
V23818-S5-N1, V23818-S5-N1-BB Product Specification – 2002-10-07
Package Outlines
Figure 8
© Finisar Corporation 2002-10-07 DSO 7
V23818-S5-N1, V23818-S5-N1-BB Product Specification – 2002-10-07
Revision History: 2002-10-07 DSO
Previous Version:
Page Subjects (major changes since last revision)
Company’s name has been changed
Document’s layout has been changed
2002-10-07
For More Information
Finisar Corporation
1389 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 2002-10-07 DSO 8
