4N23A (TT)
Hi-Reliability Optically Coupled Isolator

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Hi-Reliability Optically
Coupled Isolator
4N22, 4N23, 4N24 [A] (TX, TXV)
4N47, 4N48, 4N49 [A] (TX, TXV)
Features:
 TO-78 hermetically sealed package
 High current transfer ratio
 1 kV electrical isolation
 Base contact provided for conventional transistor biasing
 TX and TXV devices processed to MIL-PRF-19500
Description:
Each isolator in this series consists of an infrared emi ng diode and a NPN silicon phototransistor, which are mounted in a
herme cally sealed TO78 package. Devices are designed for military and/or harsh environments. The sux le er “A”
denotes the collector is electrically isolated from the case.
The 4N22, 4N22A, 4N23, 4N23A,4N24, and 4N24A (TX, TXV) devices are processed to MILPRF19500/486.   
The 4N47, 4N47A, 4N48, 4N48A, 4N49, and 4N49A (TX, TXV) devices are processed to MILPRF19500/548. 
 
Please contact your local representa ve or OPTEK for more informa on.
Applications:
 High-voltage isolation between input
and output
 Electrical isolation in dirty
environments
 Industrial equipment
 Medical equipment
 Office equipment
Part
Number
4N22 or 4N22A
4N22TX or 4N22ATX
4N22TXV or 4N22ATXV
4N23 or 4N23A
4N23TX or 4N23ATX
4N23TXV or 4N23ATXV
4N24 or 4N24A
4N24TX or 4N24ATX
4N24TXV or 4N24ATXV
4N47 or 4N47A
4N47TX or 4N47ATX
4N47TXV or 4N47ATXV
4N48 or 4N48A
4N48TX or 4N48ATX
4N48TXV or 4N48ATXV
4N49 or 4N49A
4N49TX or 4N49ATX
4N49TXV or 4N49ATXV
OI
Isola on
Voltage
(kV)
CTR %
Min / Max
IF (mA)
Typ / Max
VCE
(Volts)
Max
Processing
MILPRF
195000
25 / NA
20 / NA 10 / 40 35
486
40 / NA
1
50 / NA
100 / 500 1 / 40 40 548 548
200 /
1,000
General Note
TT Electronics reserves the right to make changes in product specification without
notice or liability. All information is subject to TT Electronics’ own data and is
considered accurate at time of going to print.
© TT electronics plc
OPTEK Technology, Inc.
1645 Wallace Drive, Carrollton, TX 75006|Ph: +1 972 323 2200
www.optekinc.com | www.ttelectronics.com
Issue D 07/2016 Page 1


4N23A (TT)
Hi-Reliability Optically Coupled Isolator

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Hi-Reliability Optically
Coupled Isolator
4N22, 4N23, 4N24 [A] (TX, TXV)
4N47, 4N48, 4N49 [A] (TX, TXV)
Absolute Maximum RaƟngs (TA = 25° C unless otherwise noted)
Storage Temperature Range
4N22, 4N22A, 4N23, 4N23A, 4N24, 4N24A (TX, TXV)
4N47, 4N47A, 4N48, 4N48A, 4N49, 4N49A (TX, TXV)
Opera ng Temperature Range
4N22, 4N22A, 4N23, 4N23A, 4N24, 4N24A (TX, TXV)
4N47, 4N47A, 4N48, 4N48A, 4N49, 4N49A (TX, TXV)
InputtoOutput Isola on Voltage
Lead Soldering Temperature [1/16 inch (1.6 mm) from case for 5 seconds with soldering iron]
Input Diode
Forward DC Current (65° C or below)
Reverse Voltage
Peak Forward Current (1 µs pulse width, 300 pps)
4N22, 4N22A, 4N23, 4N23A, 4N24, 4N24A (TX, TXV)
Power Dissipa on
Output Phototransistor (4N22, 4N22A, 4N23, 4N23A, 4N24, 4N24A )
Con nuous Collector Current
CollectorEmi er Voltage
CollectorBase Voltage
Emi erBase Voltage
Power Dissipa on
Output Phototransistor (4N47, 4N47A, 4N48, 4N48A, 4N49, 4N49A )
Con nuous Collector Current
CollectorEmi er Voltage
CollectorBase Voltage
Emi erBase Voltage
Power Dissipa on
Notes:
1. Measured with input leads shorted together and output leads shorted together.
2. RMA ux is recommended. Dura on can be extended to 10 seconds maximum when ow soldering.
3. Derate linearly 1.0 mW/° C above 65° C.
4. Derate linearly 3.0 mW/° C above 25° C.
65° C to +125° C
55° C to +125° C
± 1.00 kVDC(1)
260° C(2)
40 mA
2V
1A
60 mW(3)
50 mA
35 V
35 V
4V
300 mW(4)
50 mA
40 V
45 V
7.0 V
300 mW(4)
General Note
TT Electronics reserves the right to make changes in product specification without
notice or liability. All information is subject to TT Electronics’ own data and is
considered accurate at time of going to print.
© TT electronics plc
OPTEK Technology, Inc.
1645 Wallace Drive, Carrollton, TX 75006|Ph: +1 972 323 2200
www.optekinc.com | www.ttelectronics.com
Issue D 07/2016 Page 2


4N23A (TT)
Hi-Reliability Optically Coupled Isolator

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Hi-Reliability Optically
Coupled Isolator
4N22, 4N23, 4N24 [A] (TX, TXV)
4N47, 4N48, 4N49 [A] (TX, TXV)
Performance
Electrical CharacterisƟcs (TA = 25°C unless otherwise noted)
SYMBOL
PARAMETER
MIN
Input Diode
Forward Voltage
4N22, 4N23, 4N24 [A] (TX, TXV)
4N22, 4N23, 4N24 [A] (TX, TXV)
VF 4N22, 4N23, 4N24 [A] (TX, TXV)
4N47, 4N48, 4N49 [A] (TX, TXV)
4N47, 4N48, 4N49 [A] (TX, TXV)
4N47, 4N48, 4N49 [A] (TX, TXV)
0.80
1.00
0.70
0.80
1.00
0.70
IR Reverse Current
Output Phototransistor
V(BR)CEO
CollectorEmi er Breakdown Voltage
4N22, 4N23, 4N24 [A] (TX, TXV)
4N47, 4N48, 4N49 [A] (TX, TXV)
35
40
V(BR)CBO
CollectorBase Breakdown Voltage
4N22, 4N23, 4N24 [A] (TX, TXV)
4N47, 4N48, 4N49 [A] (TX, TXV)
35
45
V(BR)EBO
Emi erBase Breakdown Voltage
4N22, 4N23, 4N24 [A] (TX, TXV)
4N47, 4N48, 4N49 [A] (TX, TXV)
4
7
CollectorEmi er Dark Current
ICEO 4N22, 4N23, 4N24 [A] (TX, TXV)
4N47, 4N48, 4N49 [A] (TX, TXV)
IC(OFF)
CollectorEmi er Dark Current
4N22, 4N23, 4N24 [A] (TX, TXV)
4N47, 4N48, 4N49 [A] (TX, TXV)
ICB(OFF)
CollectorBase Dark Current
4N22, 4N23, 4N24 [A] (TX, TXV)
4N47, 4N48, 4N49 [A] (TX, TXV)
Notes:
1. Guaranteed but not tested.
2. Sample tested, LTPD = 10.
TYP
MAX
1.30
1.50
1.20
1.50
1.70
1.30
100
100
100
100
100
10
10
UNITS
TEST CONDITIONS
IF = 10.0 mA
IF = 10.0 mA, TA = 55° C(1)
V IF = 10.0 mA, TA = 100° C(1)
IF = 10.0 mA
IF = 10.0 mA, TA = 55° C(1)
IF = 10.0 mA, TA = 100° C(1)
µA VR= 2.0 V
V IC = 1.0 mA, IB= 0, IF= 0
IC = 1.0 mA, IB= 0, IF= 0
V IC = 100 µA, IB= 0, IF= 0
IC = 100 µA, IB= 0, IF= 0
V IE = 100 µA, IC= 0, IF= 0
IE = 100 µA, IC= 0, IF= 0
nA VCE = 20 V, IB= 0, IF= 0
µA VCE = 20 V, IB= 0, IF= 0, TA = 100° C(2)
nA VCE = 20 V, IB= 0, IF= 0
µA VCE = 20 V, IB= 0, IF= 0, TA = 100° C(1)
nA
nA
VCB = 20 V, IE= 0, IF= 0
DIMENSIONS
ARE
IN:
[
MILLIMETERS]
INCHES
5
3
2
71
Pin #
1
2
3
FuncƟon
Emi er
Base
Collector
Pin #
5
6
7
FuncƟon
Anode
Open
Cathode
General Note
TT Electronics reserves the right to make changes in product specification without
notice or liability. All information is subject to TT Electronics’ own data and is
considered accurate at time of going to print.
© TT electronics plc
OPTEK Technology, Inc.
1645 Wallace Drive, Carrollton, TX 75006|Ph: +1 972 323 2200
www.optekinc.com | www.ttelectronics.com
Issue D 07/2016 Page 3


4N23A (TT)
Hi-Reliability Optically Coupled Isolator

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Hi-Reliability Optically
Coupled Isolator
4N22, 4N23, 4N24 [A] (TX, TXV)
4N47, 4N48, 4N49 [A] (TX, TXV)
Electrical CharacterisƟcs (TA = 25°C unless otherwise noted)
SYMBOL
PARAMETER
Coupled
OnState Collector Current
4N22, 4N22A (TX, TXV)
4N22, 4N22A (TX, TXV)
4N22, 4N22A (TX, TXV)
4N22, 4N22A (TX, TXV)
4N23, 4N23A (TX, TXV)
4N23, 4N23A (TX, TXV)
4N23, 4N23A (TX, TXV)
4N23, 4N23A (TX, TXV)
4N24, 4N24A (TX, TXV)
IC(ON)
4N24, 4N24A (TX, TXV)
4N24, 4N24A (TX, TXV)
4N24, 4N24A (TX, TXV)
4N47, 4N47A (TX, TXV)
4N47, 4N47A (TX, TXV)
4N47, 4N47A (TX, TXV)
4N48, 4N48A (TX, TXV)
4N48, 4N48A (TX, TXV)
4N48, 4N48A (TX, TXV)
4N49, 4N49A (TX, TXV)
4N49, 4N49A (TX, TXV)
4N49, 4N49A (TX, TXV)
ICB(ON)
OnState Collector Base
4N47, 4N48, 4N49 [A] (TX, TXV)
VCE(SAT)
CollectorEmi er Satura on Voltage
4N22, 4N23, 4N24 [A] (TX, TXV)
4N22, 4N23, 4N24 [A] (TX, TXV)
4N22, 4N23, 4N24 [A] (TX, TXV)
4N47, 4N47A (TX, TXV)
4N48, 4N48A (TX, TXV)
4N49, 4N49A (TX, TXV)
DC Current Gain
4N22, 4N22A (TX, TXV)
HFE 4N23, 4N23A (TX, TXV)
4N24, 4N24A (TX, TXV)
4N47, 4N48, 4N49 [A] (TX, TXV)
Resistance (InputtoOutput)
RIO 4N22, 4N23, 4N24 [A] (TX, TXV)
4N47, 4N48, 4N49 [A] (TX, TXV)
CIO Capacitance (InputtoOutput)
Notes:
1. Guaranteed but not tested.
MIN TYP MAX UNITS
TEST CONDITIONS
0.15
2.50
1.00
1.00
0.20
6.00
2.50
2.50
0.40
10.0
4.00
4.00
0.50
0.70
0.50
1.00
1.40
1.00
2.00
2.80
2.00
30
IF = 2.0 mA , VCE = 5 V, IB = 0
IF = 10.0 mA , VCE = 5 V, IB = 0
IF = 10.0 mA , VCE = 5 V, IB = 0, TA = 55° C(1)
IF = 10.0 mA , VCE = 5 V, IB = 0, TA = 100° C(1)
IF = 2.0 mA , VCE = 5 V, IB = 0
IF = 10.0 mA , VCE = 5 V, IB = 0
IF = 10.0 mA , VCE = 5 V, IB = 0, TA = 55° C(1)
IF = 10.0 mA , VCE = 5 V, IB = 0, TA = 100° C(1)
IF = 2.0 mA , VCE = 5 V, IB = 0
IF = 10.0 mA , VCE = 5 V, IB = 0
mA IF = 10.0 mA , VCE = 5 V, IB = 0, TA = 55° C(1)
IF = 10.0 mA , VCE = 5 V, IB = 0, TA = 100° C(1)
IF = 1.0 Ma, VCE = 5.0 V, IB = 0
IF = 2.0 mA, VCE = 5.0 V, IB = 0, TA = 55° C(1)
IF = 2.0 mA, VCE = 5.0 V, IB = 0, TA = 100° C(1)
5 IF = 1.0 mA, VCE = 5.0 V, IB = 0
IF = 2.0 mA, VCE = 5.0 V, IB = 0, TA = 55° C(1)
IF = 2.0 mA, VCE = 5.0 V, IB = 0, TA = 100° C(1)
10 IF = 1.0 mA, VCE = 5.0 V, IB = 0
IF = 2.0 mA, VCE = 5.0 V, IB = 0, TA = 55° C(1)
IF = 2.0 mA, VCE = 5.0 V, IB = 0, TA = 100° C(1)
µA VCB = 5 V, IE = 0, IF = 10 mA
‐ ‐ 0.30
IF = 20 mA , IC = 2.5 mA, IB = 0
‐ ‐ 0.30
IF = 20 mA , IC = 5.0 mA, IB = 0
‐ ‐ 0.30 V IF = 20 mA , IC = 10.0 mA, IB = 0
‐ ‐ 0.30
IF = 2.0 mA, IC = 0.5 mA, IB = 0
‐ ‐ 0.30
‐ ‐ 0.30
IF = 2.0 mA, IC = 1.0 mA, IB = 0
IF = 2.0 mA, IC = 2.0 mA, IB = 0
‐‐
>300
V VCE = 5.0 V , IC = 10.0 mA, IF = 0 mA
‐‐
1011 ‐ ‐ Ω VI0 = ± 1000 VDC(3)
1011
VIO = ± 1000 VDC(3)
‐ ‐ 5 pF VIO = 0 V, f = 1.0 MHz(3)
2. Sample tested, LTPD = 10.
3. Measured with input leads shorted together and output leads shorted together.
General Note
TT Electronics reserves the right to make changes in product specification without
notice or liability. All information is subject to TT Electronics’ own data and is
considered accurate at time of going to print.
© TT electronics plc
OPTEK Technology, Inc.
1645 Wallace Drive, Carrollton, TX 75006|Ph: +1 972 323 2200
www.optekinc.com | www.ttelectronics.com
Issue D 07/2016 Page 4


4N23A (TT)
Hi-Reliability Optically Coupled Isolator

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Hi-Reliability Optically
Coupled Isolator
4N22, 4N23, 4N24 [A] (TX, TXV)
4N47, 4N48, 4N49 [A] (TX, TXV)
Electrical CharacterisƟcs (TA = 25°C unless otherwise noted)
SYMBOL
PARAMETER
MIN TYP MAX UNITS
TEST CONDITIONS
Coupled
Output Rise Time
4N22A (TX, TXV)
4N23A (TX, TXV)
TR 4N24A (TX, TXV)
4N47 (TX. TXV)
4N48 (TX. TXV)
4N49 (TX. TXV)
Output Fall Time
4N22A (TX, TXV)
4N23A (TX, TXV)
TF 4N24A (TX, TXV)
4N47 (TX. TXV)
4N48 (TX. TXV)
4N49 (TX. TXV)
‐ ‐ 15
VCC = 10.0 V , IF = 10.0 mA, RL = 100 mA
‐ ‐ 15
VCC = 10.0 V , IF = 10.0 mA, RL = 100 mA
‐ ‐ 20 µs VCC = 10.0 V , IF = 10.0 mA, RL = 100 mA
‐ ‐ 20
‐ ‐ 20
‐ ‐ 25
VCC = 10.0 V , IF = 5.0 mA, RL = 100 Ω
VCC = 10.0 V , IF = 5.0 mA, RL = 100 Ω
VCC = 10.0 V , IF = 5.0 mA, RL = 100 Ω
‐ ‐ 15
VCC = 10.0 V , IF = 10.0 mA, RL = 100 Ω
‐ ‐ 15
VCC = 10.0 V , IF = 10.0 mA, RL = 100 Ω
‐ ‐ 20 µs VCC = 10.0 V , IF = 10.0 mA, RL = 100 Ω
‐ ‐ 20
VCC = 10.0 V , IF = 5.0 mA, RL = 100 Ω
‐ ‐ 20
VCC = 10.0 V , IF = 5.0 mA, RL = 100 Ω
‐ ‐ 25
VCC = 10.0 V , IF = 5.0 mA, RL = 100 Ω
Typical Performance Curves
1.5
1.4
1.3
1.2
1.1
1.0
0.9
0.8
0
Forward Voltage vs Forward Current vs Temperature
5 10 15 20
IF - Forward Current (mA)
25
-55°
-35°
-15°
+5°
+25°
+45°
+65°
+85°
+105°
+125°
General Note
TT Electronics reserves the right to make changes in product specification without
notice or liability. All information is subject to TT Electronics’ own data and is
considered accurate at time of going to print.
© TT electronics plc
OPTEK Technology, Inc.
1645 Wallace Drive, Carrollton, TX 75006|Ph: +1 972 323 2200
www.optekinc.com | www.ttelectronics.com
Issue D 07/2016 Page 5


4N23A (TT)
Hi-Reliability Optically Coupled Isolator

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Hi-Reliability Optically
Coupled Isolator
4N22, 4N23, 4N24 [A] (TX, TXV)
4N47, 4N48, 4N49 [A] (TX, TXV)
Typical Performance Curves
700%
600%
500%
Collector Current vs Forward Current vs Temperature
Normalized at +25°C
IF = 1 mA and VCE = 5
V
400%
300%
200%
100%
0%
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5
IF - Forward current (mA)
5.0
-55°
-35°
-15°
+5°
+25°
+45°
+65°
+85°
+105°
+125°
Normalized Collector Current Vs Temperature
140%
120%
100%
Nor malized at +25°C
IF=1mA and VCE=5 V
80%
IF =1mA
60%
40%
20%
0%
- 55° -35° - 15°
+5° +25° +45° +65° +85° +105° +125°
Temperature (°C)
Normalized Collector Current Vs Temperature
140%
120%
100%
Nor malized at +25°C
IF=2 mA and VCE=5 V
80%
IF =2mA
60%
40%
20%
0%
- 55°
- 35° - 15°
+5° +25° +45° +65° +85° +105° +125°
Temperature (°C)
General Note
TT Electronics reserves the right to make changes in product specification without
notice or liability. All information is subject to TT Electronics’ own data and is
considered accurate at time of going to print.
© TT electronics plc
OPTEK Technology, Inc.
1645 Wallace Drive, Carrollton, TX 75006|Ph: +1 972 323 2200
www.optekinc.com | www.ttelectronics.com
Issue D 07/2016 Page 6




4N23A.pdf
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