4N25/ 4N26/ 4N27/ 4N28
Vishay Semiconductors
1.5
NCTR - Normalized CTR
NCTRcb - Normalized CTRcb
Normalized to:
Vce=10 V, I
F
=10 mA, T
A
=25°C
CTRce(sat) Vce = 0.4 V
1.5
Normalized to:
Vcb=9.3 V, I
F
=10 mA, T
A
=25
°C
1.0
T
A
=85°C
1.0
0.5
NCTR(SAT)
NCTR
0.5
25°C
50°C
70°C
0.0
.1
1
10
100
0.0
.1
1
10
I
F
- LED Current - mA
100
I
F
- LED Current - mA
i4n25_08
i4n25_05
Figure 5. Normalized Non-saturated and saturated CTR vs. LED
Current
Figure 8. Normalized CTRcb vs. LED Current and Temp.
35
Ice - Collector Current - mA
10
Normalized to:
I
F
=10 mA, T
A
=25°C
30
25
20
15
10
5
0
0
10
20
30
40
50
60
I
F
- LED Current - mA
70°C
25°C
85°C
50°C
Normalized Photocurrent
1
1
0.
Nib,
T
A
=–20°C
Nib,
T
A
= 25°C
Nib,
T
A
= 50°C
Nib,
T
A
= 70°C
0.01
.1
i4n25_09
1
10
100
i4n25_06
I
F
- LED Current - mA
Figure 6. Collector-Emitter Current vs. Temperature and LED
Current
Figure 9. Normalized Photocurrent vs. I
F
and Temp.
10
Iceo - Collector-Emitter - nA
5
4
1.2
NHFE - Normalized HFE
70°C
10
10
3
1.0
–20°C
0.8
25°C
10
2
10
10
1
0
V
ce
= 10 V
Typical
0.6
Normalized to:
Ib=20
µA,
Vce=10 V, TA=25°C
10
–1
10
–2
–20
0
20
40
60
80
T
A
- Ambient Temperature - °C
100
0.4
i4n25_10
1
10
100
Ib - Base Current -
µA
1000
i4n25_07
Figure 7. Collector-Emitter Leakage Current vs.Temp.
Figure 10. Normalized Non-saturated HFE vs. Base Current and
Temperature
Document Number 83725
Rev. 1.4, 26-Jan-05
www.vishay.com
5
VISHAY [ VISHAY TELEFUNKEN ]
