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