AFCT-57D5ATPZ
Digital Diagnostic SFP, 10 km, 1310 nm DFB,
8.5/4.5/2.125 GBd Fibre Channel RoHS-Compliant Optical Transceiver
Reliability Data Sheet
Introduction
FIT Rate Summary
Avago Technologies Quality System includes an ongoing
Reliability Monitoring program to generate a database
from which this reliability datasheet is published.
FIT rate for the SFP+ LW 8.5 GBd module is calculated as
158 FIT at 40 °C. This corresponds to a mean time to failure
(MTTF) of 6.34E6 hours.
Description
Random Failure Rate (FIT) Calculation
Avago Technologies’ AFCT-57D5ATPZ optical transceiver
supports high-speed serial links over single-mode optical
fiber at signaling rates up to 8.5 Gbd.
Failure in time rate, or FIT, is defined as the number of
failures per billion device hours. In the product useful life
region, the random failure rate is considered as a constant
failure rate. In this region MTTF, Mean Time to Failure, is
defined as MTTF = 1/FIT.
The AFCT-57D5ATPZ is a multi-rate 1310 nm DFB Small
Form Pluggable (SFP), which ensures compliance to
8.5/4.25/2.125 GBd Fibre Channel specifications without
the need for Rate Select.
Reliability Qualification
The transceiver has completed qualification in accordance
with the requirements of Telcordia Document GR-468CORE. Reliability predictions follow the method of
Telcordia SR-332.
Stress Test Pass Criteria
Product failure has occurred when the unit fails to respond
properly to a functional test. The functional test condition
should not exceed the data sheet limits.
FITs Prediction Based on Telcordia SR-332 Part Count
Procedure
The Telcordia Parts Count Method assumes that the
module failure rate is equal to the sum of the device
component failure rates. Modifiers are included to
take into consideration variations in module operation
environments, device quality requirements, temperature,
and stress. Table 1 shows the FITs for the components used
in the module and the total FIT that has been calculated
for a case temperature of 40 °C.
