SFF Committee
SFF-8431 Specifications for
Enhanced Small Form Factor Pluggable Module SFP+
Revision 4.1
6th of July 2009
Secretariat: SFF Committee
Abstract: This document defines the low speed electrical and management interface specifications for enhanced Small Form
Factor Pluggable (SFP+) modules and hosts. The SFP+ module is a hot pluggable small footprint serial-to-serial data-agnostic
optical transceiver. This document defines the high speed electrical interface specifications for 10 Gigabit/s SFP+ modules
and hosts. The 8.5 Gigabit/s high speed electrical interface specifications are defined in FC-PI-4. The modules may optionally
support lower signalling rates as well. The modules may be used to implement single-mode or multimode serial optical interfaces
at 850 nm, 1310 nm, or 1550 nm. The SFP+ module design may use one of several different optical connectors.
This specification provides a common reference for system manufacturers, system integrators, and suppliers. This is an internal
working specification of the SFF Committee, an industry ad hoc group.
This specification is made available for public review, and written comments are solicited from readers. Comments received
by the members will be considered for inclusion in future revisions of this specification.
Support: This specification is supported by the identified member companies of the SFF Committee.

SFF委员会
增强型SFP+模块的SFF-8431规范
第4.1版本
2009年7月6日
秘书处:SFF委员会
摘要:本文件定义了低速增强型SFP+模块和主机的电磁界面规范.

SFP+模块是热插拔小封装串行的光学收发器,不进行数据识别.本文件定义了10GB SFP+模块和主机的电气界面规范.8.5GB SFP+模块和主机的电气界面规范定义在FC-PI-4.模块可能也支持低信号速率.模块可用于执行850 nm, 1310 nm或 1550 nm串行单一模式或多模式光学界面.SFP+模块设计可以采用好几种不同光学连接器中的某一种.
本规范为系统制造商,系统集成商,供应商提供通用的参考.这是SFF委员会内部工作规范.
本规范公开使用,欢迎读者提出书面评价.会员收到的书面评价有可能写入以后的版本中.
支持:本规范由SFF委员会认可的会员公司支持.

The user's attention is called to the possibility that implementation to this Specification may require use of an invention covered
by patent rights. By distribution of this specification, no position is taken with respect to the validity of a claim or claims
of any patent rights in connection therewith. Members of the SFF Committee which advise that a patent exists are required
to provide a statement of willingness to grant a license under these rights on reasonable and non-discriminatory terms and
conditions to applicants desiring to obtain such a license.