Electrostatic Discharge (ESD)
Caution
There are two conditions in which immunity to ESD dam-
age is important:
The AFCT-576xZ contains no user-serviceable parts. Tam-
pering with or modifying the performance of the AFCT-
576xZ will result in voided product warranty. It may also
result in improper operation of the transceiver circuitry,
and possible over-stress of the laser source. Device deg-
radation or product failure may result. Connection of the
AFCT-576xZ to a non-approved optical source, operating
above the recommended absolute maximum conditions
may be considered an act of modifying or manufacturing
a laser product. The person(s) performing such an act
is required by law to re-certify and re-identify the laser
product under the provisions of U.S. 21 CF.
The first condition is static discharge to the transceiver
during handling such as when the transceiver is inserted
into the transceiver port. To protect the transceiver, it is
important to use normal ESD handling precautions includ-
ing the use of grounded wrist straps, work benches, and
floor mats in ESD controlled areas. The ESD sensitivity of
the AFCT-576xZ is compatible with typical industry pro-
duction environments.
The second condition is static discharge to the exterior
of the host equipment chassis after installation. To the
extent that the duplex LC optical interface is exposed
to the outside of the host equipment chassis, it may be
subject to system-level ESD requirements. The ESD per-
formance of the AFCT-576xZ exceeds typical industry
standards. Table 1 documents ESD immunity to both of
these conditions.
Handling Precautions
The AFCT-576xZ can be damaged by current surges or
overvoltage. Power supply transient precautions should
be taken, and normal handling precautions for electro-
static sensitive devices should be taken.
Optical Power Budget
Electromagnetic Interference (EMI)
The worst-case Optical Power Budget (OPB) in dB for a
fiber-optic link is determined by the difference between
the minimum transmitter output optical power (dBm
avg) and the lowest receiver sensitivity (dBm avg). This
OPB provides the necessary optical signal range to es-
tablish a working fiber-optic link. The OPB is allocated for
the fiber-optic cable length and the corresponding link
penalties. For proper link performance, all penalties that
affect the link performance must be accounted for within
the link optical power budget.
Most equipment designs using the AFCT-576xZ SFPs are
subject to the requirements of the FCC in the United
States, CENELEC EN55022 (CISPR 22) in Europe and VCCI
in Japan. The metal housing and shielded design of the
transceiver minimize EMI and provide excellent EMI per-
formance.
EMI Immunity
The AFCT-576xZ transceivers have a shielded design to
provide excellent immunity to radio frequency electro-
magnetic fields which may be present in some operating
environments.
Process Plug
This transceiver is supplied with a process plug for
protection of the optical port within the LC connector
receptacle. This process plug prevents contamination
during handling, shipping and storage. It is made of a
high-temperature, molded sealing material that can
withstand +85 °C.
Eye Safety
The AFCT-576xZ transceivers provide Class 1 eye safety
by design. Avago Technologies has tested the transceiver
design for regulatory compliance, under normal operat-
ing conditions and under a single fault condition. See
Table 1.
LC SFP Cleaning Recommendations
In the event of contamination of the optical ports, the
recommended cleaning process is the use of forced ni-
trogen. If contamination is thought to have remained, the
optical ports can be cleaned using a NTT international
Cletop stick type (diam. 1.25 mm) and HFE7100 cleaning
fluid.
Flammability
The AFCT-576xZ family of SFPs is compliant to UL 94V-0.
Customer Manufacturing Processes
This module is pluggable and is not designed for aqueous
wash, IR reflow, or wave soldering processes.
6
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