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參數(shù)資料
| 型號： | MM-JESD22-A115-A |
| 廠商： | Avago Technologies Ltd. |
| 英文描述： | Reflective Surface Mount Optical Encoder |
| 中文描述： | 反射式表面貼裝光學編碼器 |
| 文件頁數(shù)： | 2/2頁 |
| 文件大?。?/td> | 70K |
| 代理商： | MM-JESD22-A115-A |
Notes:
1. The point typical MTTF (which represents 60% confidence level) is the total device hours divided by the number of failures. In the case of zero
failures, one failure is assumed for this calculation.
2. The 90% Confidence MTTF represents the minimum level of reliability performance which is expected from 90% of all samples. This confidence
interval is based on the statistics of the distribution of failures. The assumed distribution of failures is exponential. This particular distribution is
commonly used in describing useful life failures.
3. Failures are catastrophic or parametric. Catastrophic failures are open, short, no logic output, no dynamic parameters while parametric failures
are failures to meet an electrical characteristic as specified in product catalog such as output voltage, duty or state errors.
Example of Failure Rate Calculation
Assume a device operating 8 hours/day, 5 days/week. The utilization factor, given 168 hours/week is:
(8 hours/day) x (5 days/week) / (168 hours/week) = 0.25
The point failure rate per year (8760 hours) at 55
°
C ambient temperature is:
(0.59% / 1K hours) x 0.25 X (8760 hours/year) = 1.29% per year
Similarly, 90% confidence level failure rate per year at 55
°
C:
(1.48% / 1K hours) X 0.25 X (8760 hours/year) = 3.24% per year
Table 3. Environmental Tests
Test Name
Temperature Cycle
Wet High Temperature Storage life
Test Conditions
-40
°
C to 85
°
C, 15min dwell time, 5 min transfer, 1000 cycles
T
A
=85
°
C, RH=85%, 1000 hours
Units Tested
30
30
Units Failed
0
0
Table 4. Electrical Tests
Test Name
ESD- Human Body Model
ESD- Machine Model
Reference
HBM-JESD22-A114D
MM-JESD22-A115-A
Test Conditions
Up to 4kV applied to all pins versus ground
Up to 300V applied to all pins versus ground
Units Tested
9
9
Units Failed
0
0
Table 5. Mechanical and Vibration shock
Test Name
Mechanical Shock
Test Conditions
15,20,30g 11ms,
5 successive shocks in each direction of 3 perpendicular axes of units
15,25,30g 20-2kHz, 10 cycles for ach g level.
Units Tested
15
Units Failed
Pass
Vibration Shock
15
Pass
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, Limited in the United States and other countries.
Data subject to change. Copyright 2007 Avago Technologies Limited. All rights reserved.
AV02-0370EN - April 27, 2007
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