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4N40

P1-P3P4-P6P7-P8
0 25 50 75 100
Figure 9. Off-State Forward Current vs. Temperature
I
M
- HOLDING CURRENT (MICROAMPERES)
TRANSIENT THERMAL IMPEDANCE (
˚C PER WATT)
5,000
10,000
500
1000
100
50
10
-20-40 0 20 40 60 80 100
T
A
- AMBIENT TEMPERATURE (˚C)
TIME (SECONDS)
T
A
- AMBIENT TEMPERATURE (˚C)
Figure 7. Holding Current vs. Temperature
I
FT
- NORMALIZED INPUT CURRENT TO TRIGGER
I
D
- NORMALIZED FORWARD CURRENT (OFF STATE)
5000
10,000
500
1000
100
50
10
5
1
30
100
20
10
60
50
40
90
80
70
0.2 0.4 0.6 08 10
ON-STATE CURRENT (AMPERES)
Figure 10. On-State Current vs. Maximum Allowable Temperature
MAXIMUM ALLOWABLE TEMPERATURE (˚C)
Figure 12. On-State Characteristics
010203040
V
T
- ON-STATE VOLTAGE (VOLTS)
.-2
.01
.06
.08
.01
.04
.6
.4
1
.8
.2
2
I
T
-
ON-STATE CURRENT (AMPERES)
R
GK
= 300Ω
1K
10K
27K
56K
1K
56K
400V
50V
V
AK
= 50V
NORMALIZED TO
V
AK
+50V
T
A
+25˚C
.0004 .001 .002 .004.0001
.0002
.01 .02 .04 1 2 4 10 20 40 100
Figure 8. Maximum Transient Thermal Impedance
40
1000
10
20
100
200
400
600
60
6
4
2
1
25 50 75 100
Figure 11. dv/dt vs. Temperature
T
A
- AMBIENT TEMPERATURE (˚C)
dV/dI - CRITICAL RATE OF RISE APPLIED FORWARD VOLTAGE ( Volt/µ sec)
500
1000
100
50
10
5
1.0
.5
ANODE LEAD TEMP
DC CURRENT
AMBIENT TEMP
HALF-SINE
WAVE AVGERAGE
ANODE LEAD TEMP
1/2 SINE WAVE AVERAGE
AMBIENT TEMP
DC CURRENT
10K
27K
R
GK
= 300Ω
JUNCTION TEMPERATURE = 100˚C
INCREASES TO FORWARD
BREAKOVER VOLTAGE
JUNCTION TEMPERATURE = 25
˚C
NOTE: (1) LEAD TEMPERATURE MEASURED AT THE WIDEST PORTION
OF THE SCR ANODE LEAD
(2) AMBIENT TEMPERATURE MEASURED AT A POINT
1/2" FROM THE DEVICE
JUNCTION TO AMBIENT
JUNCTION TO LEAD
www.fairchildsemi.com 4 OF 8 2/27/01 DS300381
PHOTO SCR OPTOCOUPLERS
4N39 4N40
+5V
470
Ω
"COIL"
4N40
56K
100
Ω
47
Ω
47
Ω
SC1460
0.1
µ
F
LOAD
"CONTACT"
220 V AC
IN5060 (4)
TYPICAL APPLICATIONS
DS300381 2/27/01 5 OF 8 www.fairchildsemi.com
PHOTO SCR OPTOCOUPLERS
4N39 4N40
Fig. 13 Coupled dv/dt - Test Circuit
tp
+
DUT
-
Vp
H
EXPONENTIAL OSCILLOSCOPE
10 K
Ω
RAMP GEN.
100
Ω
+100 V AC
Vp = 800 Volts
tp = .010 Seconds
f = 25 Hertz
T
A
= 25
°
C
dV / dt
.63 Vp
Vp
10A, T
2
L COMPATIBLE, SOLID
STATE RELAY
Use of the 4N40 for high sensi-
tivity, 5300 V isolation capability,
provides this highly reliable solid
state relay design. This design is
compatible with 74, 74S and 74H
series T
2
L logic systems inputs
and 220V AC loads up to 10A.
LOGIC
+5V
56K
470
Ω
4N40
0.1
µ
F
220 V AC
100
Ω
INPUT
INDICATER
LAMP
25W, LOGIC INDICATOR LAMP DRIVER
The high surge capability and non-reactive input
characteristics of the 4N40 allow it to directly couple,
without buffers, T
2
L and DTL logic to indicator alarm
devices, without danger of introducing noise and
logic glitches.
OUTPUT
INPUT
4N40
400V SYMMETRICAL TRANSISTOR COUPLER
Use of the high voltage PNP portion of the 4N40 provides a 400V transistor
capable of conducting positive and negative signals with current transfer
ratios of over 1%. This function is useful in remote instrumentation, high volt-
age power supplies and test equipment. Care should be taken not to exceed
the 40mW power dissipation rating when used at high voltages.
Lead Coplanarity : 0.004 (0.10) MAX
0.270 (6.86)
0.240 (6.10)
0.350 (8.89)
0.330 (8.38)
0.300 (7.62)
TYP
0.405 (10.30)
MAX
0.315 (8.00)
MIN
0.016 (0.40) MIN
2
5
PIN 1
ID.
0.016 (0.41)
0.008 (0.20)
0.100 (2.54)
TYP
0.022 (0.56)
0.016 (0.41)
0.070 (1.78)
0.045 (1.14)
0.200 (5.08)
0.165 (4.18)
4
3
0.020 (0.51)
MIN
1
6
0.100 (2.54)
TYP
0.020 (0.51)
MIN
0.350 (8.89)
0.330 (8.38)
0.270 (6.86)
0.240 (6.10)
PIN 1
ID.
0.022 (0.56)
0.016 (0.41)
0.070 (1.78)
0.045 (1.14)
0.200 (5.08)
0.135 (3.43)
0.300 (7.62)
TYP
0° to 15°
0.154 (3.90)
0.100 (2.54)
SEATING PLANE
0.016 (0.40)
0.008 (0.20)
SEATING PLANE
0.016 (0.40)
0.008 (0.20)
0.070 (1.78)
0.045 (1.14)
0.350 (8.89)
0.330 (8.38)
0.154 (3.90)
0.100 (2.54)
0.200 (5.08)
0.135 (3.43)
0.004 (0.10)
MIN
0.270 (6.86)
0.240 (6.10)
0.400 (10.16)
TYP
0° to 15°
0.022 (0.56)
0.016 (0.41)
0.100 (2.54) TYP
NOTE
All dimensions are in inches (millimeters)
0.070 (1.78)
0.060 (1.52)
0.030 (0.76)
0.100 (2.54)
0.295 (7.49)
0.415 (10.54)
Package Dimensions (Surface Mount)Package Dimensions (Through Hole)
Package Dimensions (0.4”Lead Spacing) Recommended Pad Layout for
Surface Mount Leadform
www.fairchildsemi.com 6 OF 8 2/27/01 DS30381
PHOTO SCR OPTOCOUPLERS
4N39 4N40
P1-P3P4-P6P7-P8

4N40

Mfr. #:
Buy 4N40
Manufacturer:
ON Semiconductor / Fairchild
Description:
Triac & SCR Output Optocouplers DIP-6 PHOTO SCR
Lifecycle:
New from this manufacturer.
Delivery:
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