AFBR-79E4Z-D [AVAGO]

4 Channels Quad Small Form Factor Pluggable Parallel Optics Transceiver; 4四通道小型可插拔平行光学收发器


型号：	AFBR-79E4Z-D
厂家：	AVAGO TECHNOLOGIES LIMITED
描述：	4 Channels Quad Small Form Factor Pluggable Parallel Optics Transceiver 4四通道小型可插拔平行光学收发器光纤通信
文件：	总2页 (文件大小：160K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

AFBR-79E4Z-D

4 Channels Quad Small Form Factor

Pluggable Parallel Optics Transceiver

Reliability Data Sheet

Description

FIT Prediction Based on Telcordia SR-332 Parts Count

Procedure

The Avago Technologies AFBR-79E4Z-D are 10G, 4 chan-

nel Quad Small Form Factor, Pluggable Parallel Optics

Transceiver, utilizing Avago’s 850nm VCSEL.

The Telcordia parts count method assumes that the mod-

ule failure rate is equal to the sum of the device compo-

nent failure rates. Modiﬁers are included to take into con-

sideration variations in module operation environments,

device quality requirements, temperature, and stress. The

tables that follow show the FIT for the components used

in the modules and the total FIT which have been calcu-

lated for an operating ambient temperature of 40oC.

FIT Rate Summary

FIT rate for AFBR-79E4Z-D is calculated as 197.42. Compu-

tation was done at 40°C based on Telcordia SR- 332 (Issue

2), Part Count Method. The details of the calculation are

included in this report.

Random Failure Rate (FIT) Calculation

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.

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.

FITs Prediction Based on Telcordia SR-332 Part Count Pro-

cedure

The Telcordia parts count method assumes that the mod-

ule failure rate is equal to the sum of the device compo-

nent failure rates. Modiﬁers are included to take into con-

sideration variations in module operation environments,

device quality requirements, temperature, and stress. The

following table shows the FITs for the components used in

the module and the total FITs which has been calculated

for a case temperature of 40°C.

Table 1. FIT Rate Calculations for AFBR-79E4Z-D

1.0

Reliability Prediction Based on Telcordia SR-332 (Issue 2) Parts Count Method Stress Factor at 50%

Environmental Factors

Telcordia Information

/ Data Source

Component

Base Rate (FITs) Factor

Quality

Temperature

Factor @ 40°C

Total Component Failure

Rate (FITs) @ 40°C

19.2

24.6

9.8

Component

VCSEL

Quantity

Avago Data

Photodiode

Fixed Ceramic

Fixed Film

0.8

1.0

Monitor PIN IC

7.7

0.2

0.5

2.3

Capacitors

Resistors

28.5

11.5

Ferrite Chip

(Inductor)

Power Filter

MOSFET

OR Gate

Nand Gate

QSFP IC

Supplier Info

Avago Data

4.0

1.0

8.0

4.3

11.0

28.0

9.3

11.0

28.0

18.6

MicroController Supplier Info

Voltage

Telcordia Information

Regulator

/ Data Source

Connectors

PCB, Edge (20 pin)

0.13

1.0

4.9

197.4

Total AFBR-79E4Z-D

Transceiver Failure at 40°C (FITs)

5.07E+06

MTTF @ 40°C (hours)

FITs at other temperatures can be derived following the

The limitations of the FIT prediction based on the Parts

procedure of Telcordia SR-332, assuming activation en- Count method include the fact that the piece part failure

ergy, Ea, of 0.35eV to determine the component tempera- rates are mostly obtained from Telcordia database, which

ture factor T. The following table shows FITs at diﬀerent

temperature for the transceiver.

may not be exhaustive for state-of-the-art piece parts,

and that the results are independent of true module en-

vironmental stress tests. Nevertheless, the information

obtained from the Parts Count method is a useful refer-

ence during design-in and evaluation. Whenever possible,

Avago substitutes internal data for the FIT rates of individ-

ual components, and predictions will be updated as more

current data becomes available.

Table 2. FIT rates at diﬀerent operation case temperatures,

following the Telcordia Parts Count Method

Tcase (°C)

AFBR-79E4Z-D

197.4

296.1

434.3

612.0

For product information and a complete list of distributors, please go to our web site: www.avagotech.com

Avago, Avago Technologies, and the A logo are trademarks of Avago Technologies in the United States and other countries.

AV02-2738EN - November 18, 2010

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