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參數(shù)資料
| 型號： | HLMP-41XX |
| 英文描述： | High Power T-1 (3 mm), T-1 3 /4 (5 mm) and Rectangular AS/TS AlGaAs Plastic Lamps(大功率T-1 (3 mm), T-1 3 /4 (5 mm) 及矩形 AS/TS AlGaAs塑料照明燈) |
| 中文描述： | 高功率的T 1（3毫米），美國T - 1 3 / 4（5毫米）和矩形為/ T型車AlGaAs的塑料燈（大功率的T 1（3毫米），美國T - 1 3 / 4（5毫米）及矩形為/ T型車AlGaAs的塑料照明燈） |
| 文件頁數(shù)： | 2/4頁 |
| 文件大?。?/td> | 35K |
| 代理商： | HLMP-41XX |
2
Table 2A. AS AlGaAs, 55
°
C @ 30 mA
Point Typical
Performance
[1]
in Time
Performance
in Time
[2]
( 90% Confidence)
Ambient
J unction
Failure Rate
( %/1K Hours)
0.065
Failure Rate
( %/1K Hours)
0.149
Temperature (
°
C)
+85
Temperature (
°
C)
+108
MTBF
[1]
1,543,000
MTBF
[2]
670,000
+75
+98
2,197,000
0.046
954,000
0.105
+65
+88
2,188,000
0.031
1,385,000
0.072
+55
+78
4,727,000
0.021
2,053,000
0.049
+45
+68
7,172,000
0.014
3,115,000
0.032
+35
+58
11,159,000
0.009
4,846,000
0.021
+25
+48
17,847,000
0.006
7,751,000
0.013
Notes:
1. The point typical MTBF (which repre-
sents 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 MTBF represents
the minimum level of reliability perfor-
mance which is expected from 90% of
all samples. This confidence interval is
based on the statistics of the distribu-
tion of failures. The assumed
distribution of failures is exponential.
This particular distribution is com-
monly used in describing useful life
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
For 55
°
C and 50 mA:
The point failure rate per year (8760 hours) at 75
°
C ambient temperature is:
(0.037% / 1K hours) x 0.25 x (8760 hours/year) = 0.081% per year
Similarly, 90% confidence level failure rate per year at 75
°
C:
(0.086% / 1K hours) x 0.25 x (8760 hours/year) = 0.188% per year
Table 2B. TS AlGaAs, 55
°
C @ 50 mA
Point Typical
Performance
[1]
in Time
Performance
in Time
[2]
( 90% Confidence)
Ambient
J unction
Failure Rate
( %/1K Hours)
0.037
Failure Rate
( %/1K Hours)
0.085
Temperature (
°
C)
+75
Temperature (
°
C)
+110
MTBF
[1]
2,718,000
MTBF
[2]
1,181,000
+65
+100
3,854,000
0.026
1,674,000
0.060
+55
+90
5,572,000
0.018
2,420,000
0.041
+45
+80
8,225,000
0.012
3,572,000
0.028
+35
+70
12,419,000
0.008
5,394,000
0.019
+25
+60
19,223,000
0.005
8,349,000
0.012
failures. Refer to MIL-STD-690B for de-
tails on this methodology.
3. A failure is any LED which is open,
shorted, or fails to emit light.
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