Datasheet

www.vishay.com
4
Document Number 83717
Rev. 1.5, 27-Jan-05
4N35/ 4N36/ 4N37/ 4N38
Vishay Semiconductors
Current Transfer Ratio
1)
Indicates JEDEC registered value
Switching Characteristics
1)
Indicates JEDEC registered value
Typical Characteristics (Tamb = 25 °C unless otherwise specified)
Parameter Test condition Part Symbol Min Typ. Max Unit
DC Current Transfer Ratio
1)
V
CE
= 10 V, I
F
= 10 mA 4N35 CTR
DC
100 %
4N36 CTR
DC
100 %
4N37 CTR
DC
100 %
V
CE
= 10 V, I
F
= 20 mA 4N38 CTR
DC
20 %
V
CE
= 10 V, I
F
= 10 mA,
T
A
= - 55 to + 100 °C
4N35 CTR
DC
40 50 %
4N36 CTR
DC
40 50 %
4N37 CTR
DC
40 50 %
4N38 CTR
DC
30 %
Parameter Tes t co n dition Symbol Min Typ. Max Unit
Switching time
1)
I
C
= 2 mA, R
L
= 100 Ω, V
CC
= 10 V t
on
, t
off
10 µs
Figure 1. Forward Voltage vs. Forward Current
i4n25_01
100101.1
0.7
0.8
0.9
1.0
1.1
1.2
1.3
1.4
I
F
- Forward Current - mA
V
F
- Forward Voltage - V
T
A
=–55°C
T
A
=25°C
T
A
=85°C
Figure 2. Normalized Non-Saturated and Saturated CTR vs. LED
Current
i4n25_02
Normalized to:
0.0
0.5
1.0
1.5
0 1 10 100
I
F
- LED Current - mA
NCTR
NCTR(SAT)
NCTR - Normlized CTR
CTRce(sat) Vce=0.4 V
Vce=10 V, I
F
=10 mA, T
A
=25°C
T
A
=25°C