4N35/ 4N36/ 4N37/ 4N38
Vishay Semiconductors
10
tPLH - Propagation Delay -
µs
1000
2.5
tPHL - Propagation Delay -
µs
Normalized to:
I
F
=10 mA, T
A
=25°C
Normalized Photocurrent
IF =10 mA,TA=25°C
VCC =5.0 V, Vth=1.5 V
100
tPHL
2.0
1
1
0.
Nib,
T
A
=–20°C
Nib,
T
A
= 25°C
Nib,
T
A
= 50°C
Nib,
T
A
= 70°C
10
tPLH
1.5
0.01
.1
i4n25_09
1
.1
i4n25_12
1.0
1
10
100
1
10
100
RL - Collector Load Resistor - kΩ
I
F
- LED Current - mA
Figure 9. Normalized Photocurrent vs. I
F
and Temp.
Figure 12. Propagation Delay vs. Collector Load Resistor
1.2
NHFE - Normalized HFE
70°C
I
F
1.0
–20°C
0.8
25°C
t
D
V
O
t
R
t
PLH
V
TH
=1.5 V
t
PHL
t
S
t
F
0.6
Normalized to:
Ib=20
µA,
Vce=10 V, TA=25°C
0.4
i4n25_10
1
10
100
Ib - Base Current -
µA
1000
i4n25_13
Figure 10. Normalized Non-saturated HFE vs. Base Current and
Temperature
Figure 13. Switching Timing
NHFE(sat) - Normalized Saturated HFE
1.5
Normalized to:
Vce=10 V, Ib=20
µA
T A =25°C
F=10 KHz,
DF=50%
VCC = 5.0 V
70°C
1.0
25°C
–20°C
0.5
50°C
RL
VO
Vce=0.4 V
0.0
1
10
100
1000
i4n25_14
IF=1 0 mA
i4n25_11
Ib - Base Current -
µA
Figure 11. Normalized HFE vs. Base Current and Temp.
Figure 14. Switching Schematic
www.vishay.com
6
Document Number 83717
Rev. 1.5, 27-Jan-05
VISHAY [ VISHAY TELEFUNKEN ]
