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參數(shù)資料
| 型號： | HDSP-Kxxx |
| 英文描述： | Seven Segment Displays(七段顯示器) |
| 中文描述： | 七段顯示器（七段顯示器） |
| 文件頁數(shù)： | 1/2頁 |
| 文件大小： | 17K |
| 代理商： | HDSP-KXXX |
Seven Segment Displays—
10 mm (0.40 inch), 10 mm Slim Font,
10.9 mm (0.43 inch), 14.2 mm (0.56 inch),
13 mm Slim Font
Reliability Data
Description
The following cumulative test
results have been obtained from
testing performed at HP Optoelec-
tronics Division in accordance
with the latest revision of
MIL- STD-883.
Hewlett-Packard tests parts at the
absolute maximum rated condi-
tions recommended for the
device. The actual performance
you obtain from HP parts depends
on the electrical and environmen-
tal characteristics of your applica-
Point Typical Performance
Total
Failed
MTBF
Stress Test
Conditions
Total Device
Hours
Units
Tested
Failure Rate
(% /1 K Hours)
Colors
HER
AlGaAs
Green
Orange
Yellow
T
A
= 55
°
C, I
F
= 30 mA
T
A
= 55
°
C, I
F
= 30 mA
T
A
= 55
°
C, I
F
= 30 mA
T
A
= 55
°
C, I
F
= 30 mA
T
A
= 55
°
C, I
F
= 20 mA
420,000
378,000
252,000
147,000
147,000
63
63
84
21
21
0
0
0
0
0
420,000
378,000
252,000
147,000
147,000
≤
0.23 %
≤
0.26 %
≤
0.40 %
≤
0.26 %
≤
0.26 %
Table 1. Life Tests
Demonstrated Performance
Failure Rate Prediction
The failure rate of semiconductor
devices is determined by the
junction temperature of the
device. The relationship between
ambient temperature and actual
junction temperature is given by
the following:
T
J
(
°
C) = T
A
(
°
C) +
θ
JA
P
AVG
where T
A
= ambient temperature
in
°
C
θ
JA
= thermal resistance of
junction-to-ambient in
°
C/watt
HDSP-Exxx, HDSP-Fxxx,
HDSP-Gxxx, HDSP- Hxxx,
HDSP-Kxxx, HDSP-3xxx,
HDSP-4xxx, HDSP-5xxx,
HDSP-6xxx, HDSP-7xxx
tion but will probably be better
than the performance outlined in
Table 1.
P
AVG
= average power dissipated
in watts
The estimated MTBF and failure
rate at temperatures lower than
the actual stress temperature can
be determined by using an
Arrhenius model for temperature
acceleration. Results of such
calculations are shown in the
table below using an activation
energy of 0.43 eV (reference
MIL-HDBK-217).
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