參數資料
型號： PS2608L
廠商： NEC Corp.
英文描述： Optocoupler Applications
中文描述： 光耦應用
文件頁數： 20/38頁
文件大?。?/td> 223K
代理商： PS2608L
19
A design example of an optocoupler circuit that operates for at least ten years is shown below (using Fig. 3-3, 4-2 and 4-3). The
major causes of CTR reduction area as follows:
(From Fig. 3-3)
CTR-relative-value vs. R
BE
characteristics
15% down (with respect to initial value, R
BE
=
×
)
(From Fig. 4-2)
CTR change with time (10 years, Ta = 60
°
C)
40% down (with respect to initial value, 0 year)
(From Fig. 4-3)
CTR-relative-value vs. ambient-temperature characteristics
(Ta = 60
°
C)
15% down (with respect to initial value t
a
= 25
°
C)
Considering the above characteristics and safety factor = 2 (twice margin), the recommended CTR is:
21.6 x 1.4 x 1.15 x 1.15 x 2 = 80%.................(15)
(Reference)
Accordingly, the CTR value including reduction of CTR by time elapse, temperature change, and insertion of R
BE
must be 21.6 %
or more.
I
F
= 5 mA
T
A
= 25
C
I
F
= 20 mA
T
A
= 25
C
I
F
= 5 mA
T
A
= 60
C
Normalized to CTR
test conditon
I
F
= 5 mA, V
CE
= 5V
10
1.2
1.0
0.8
0.6
0.4
0.2
0
0
10
10
10
2
3
4
5
Time (Hr)
Figure 4-2. Change of CTR with
Time (PS2601)
C
Ambient Temperature T
A
(
°
C)
Figure 4-3. CTR-Relative-Value vs.
T
A
Characteristics
C
Normalized to 100
at T
A
= 25
C
I
F
= 5 mA, V
CE
= 5 V
1.2
1.0
0.8
0.6
0.4
0.2
0
-55 -40
-20
20
40
60
80
100
0
相關PDF資料
PDF描述
PS2621 Optocoupler Applications
PS2621L Optocoupler Applications
PS2622 Optocoupler Applications
PS2622L Optocoupler Applications
PS2653 Optocoupler Applications
相關代理商/技術參數
參數描述
PS260MA24 功能描述:EMI/RFI 抑制器及鐵氧體 PCB Shield Enclosure RoHS:否 制造商:Fair-Rite 產品:Ferrite Cores 阻抗:365 Ohms 容差: 最大直流電流: 最大直流電阻: 工作溫度范圍:- 55 C to + 125 C 封裝 / 箱體: 端接類型:SMD/SMT
PS260MA24A 功能描述:EMI/RFI 抑制器及鐵氧體 PCB Shield Enclosure Adhesive Base RoHS:否 制造商:Fair-Rite 產品:Ferrite Cores 阻抗:365 Ohms 容差: 最大直流電流: 最大直流電阻: 工作溫度范圍:- 55 C to + 125 C 封裝 / 箱體: 端接類型:SMD/SMT
PS260MA44 功能描述:EMI/RFI 抑制器及鐵氧體 PCB Shield Enclosure RoHS:否 制造商:Fair-Rite 產品:Ferrite Cores 阻抗:365 Ohms 容差: 最大直流電流: 最大直流電阻: 工作溫度范圍:- 55 C to + 125 C 封裝 / 箱體: 端接類型:SMD/SMT
PS260MA44A 功能描述:EMI/RFI 抑制器及鐵氧體 PCB Shield Enclosure Adhesive Base RoHS:否 制造商:Fair-Rite 產品:Ferrite Cores 阻抗:365 Ohms 容差: 最大直流電流: 最大直流電阻: 工作溫度范圍:- 55 C to + 125 C 封裝 / 箱體: 端接類型:SMD/SMT
PS260MA59 功能描述:EMI/RFI 抑制器及鐵氧體 PCB Shield Enclosure RoHS:否 制造商:Fair-Rite 產品:Ferrite Cores 阻抗:365 Ohms 容差: 最大直流電流: 最大直流電阻: 工作溫度范圍:- 55 C to + 125 C 封裝 / 箱體: 端接類型:SMD/SMT
發(fā)布緊急采購，3分鐘左右您將得到回復。

采購需求

(若只采購一條型號，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

*型號 *數量 廠商 批號 封裝
添加更多采購

我的聯系方式

*
*
*