OPTEK reserves the right to make changes at any time in order to improve design and to supply the best product possible.
OPTEK Technology Inc. — 1645 Wallace Drive, Carrollton, Texas 75006
Phone: (972) 323-2200 or (800) 341-4747 FAX: (972) 323-2396 sensors@optekinc.com www.optekinc.com
Issue A.3 11/09
Page 1 of 5
Hi-Reliability Optically Coupled Isolator
3C91C, 3C92C, 3N243, 3N244, 3N245, 3N261, 3N262, 3N263
(TX, TXV)
Description:
Each device is a high reliability optically coupled isolator that consists of an infrared emitting diode and a NPN
silicon phototransistor which are mounted in a hermetically sealed TO-72 package. The 3C291C and 3C292C
have a 935 nm wavelength, whereas the 3N243, 3N244, 3N245, 3N261, 3N262 and 3N263 have an 880 nm
wavelength. All devices have 0.50” (12.70 mm) leads. Electrical characteristics vary. The 3N261TX, 3N262TX
and 3N263TX devices are similar to JEDEC registered optically coupled isolators.
TX and TXV devices are processed to OPTEK’s military screening program patterned after MIL-PRF-195 00.
Please refer to Application Bulletins 208 and 210 for additional design information and reliability (degradation) data.
Contact your local representative or OPTEK for more information.
Features:
• TO-72 hermetically sealed package
• 1 kVDC electrical isolation
• High current transfer ratio
• TX and TXV devices processed to MIL-PRF-19500
Part
Number
LED
Peak
Wavelength
Sensor
Isolation
Voltage
(,000)
CTR
Min / Max
IF (mA)
Typ / Max
VCE (V)
Typ /
Max
Lead
Length
3C91C (TX, TXV) 935 nm
Transistor 1
10 / 50 10 / 50
0.50"
3C92C (TX, TXV)
3N243 (TX, TXV)
880 nm
0.15 / NA
3 / 40 10 / 30 3N244 (TX, TXV) 0.3 / NA
3N245 (TX, TXV) 0.6 / NA
3N261 (TX, TXV) .05 / NA
1 / 40 5 / 30
3N262 (TX, TXV) 1.0 / 5.0
3N263 (TX, TXV) 2.0 / 10.0
0.3 / 2.0
Pin # 3C91 3C9 2 3N2XX
1 Cathode Cathode Emitter
2 Collector Emitter Cathode
3 Emitter Collector Collector
4 Anode Anode Anode
Applications:
• High-voltage isolation
between input and output
• Electrical isolation in dirty
environments
• Industrial equipment
• Medical equipment
• Office equipment
DIMENSIONS ARE IN:
INCHES
[ MILLIMETERS]
4
2
3
1
3C91
4
3
2
1
3C92
4
3
1
2
3N2XX
Phototransistor Collector is connected to the Header-Base-Case for ALL versions
Bottom
View
OPTEK reserves the right to make changes at any time in order to improve design and to supply the best product possible.
OPTEK Technology Inc. — 1645 Wallace Drive, Carrollton, Texas 75006
Phone: (972) 323-2200 or (800) 341-4747 FAX: (972) 323-2396 sensors@optekinc.com www.optekinc.com
Issue A.3 11/09
Page 2 of 5
Hi-Reliability Optically Coupled Isolator
3C91C, 3C92C, 3N243, 3N244, 3N245, 3N261, 3N262, 3N263
(TX, TXV)
Notes:
1. Measured with input leads shorted together and output leads shorted together.
2. RMA flux is recommended. Duration can be extended to 10 seconds maximum when flow soldering.
3. Derate linearly 2.0 mW/° C above 25° C.
4. Derate linearly 0.60 mW/° C above 65° C.
Absolute Maximum Ratings (TA = 25° C unless otherwise noted)
Operating Temperature Range -55o C to +125o C
Storage Temperature Range -65o C to +150o C
Input to Output Isolation Voltage ± 1 kVDC(1)
Lead Soldering Temperature [1/16 inch (1.6 mm) from case for 5 seconds with soldering iron] 260° C(2)
Input Diode
Forward DC Current 40 mA
Reverse Voltage 2.0 V
Power Dissipation 60 mW(3)
Continuous Collector Current 30 mA
Collector-Emitter Voltage 30 V
Emitter-Collector Voltage 5.0 V
Power Dissipation 200 mW(4)
Output Phototransistor
I
C(ON)
vs T
A
0.0
0.5
1.0
1.5
2.0
2.5
-55 -35 -15 +5 +25 +45 +65 +85 +105 +125 +135
T
A
(°C)
I
C(ON)
(mA)
I
F
= 20mA
I
F
= 50mA
Normalized @ 20 mA and 25° C
OPTEK reserves the right to make changes at any time in order to improve design and to supply the best product possible.
OPTEK Technology Inc. — 1645 Wallace Drive, Carrollton, Texas 75006
Phone: (972) 323-2200 or (800) 341-4747 FAX: (972) 323-2396 sensors@optekinc.com www.optekinc.com
Issue A.3 11/09
Page 3 of 5
Hi-Reliability Optically Coupled Isolator
3C91C, 3C92C, 3N243, 3N244, 3N245, 3N261, 3N262, 3N263
(TX, TXV)
Electrical Characteristics (TA = 25°C unless otherwise noted)
SYMBOL PARAMETER MIN TYP MAX UNITS TEST CONDITIONS
Input Diode
VF
Forward Voltage
3C91C, 3C92C (TX, TXV)
3C91C, 3C92C (TX, TXV)
3N243, 3N244, 3N245 (TX, TXV)
3N243, 3N244, 3N245 (TX, TXV)
3N243, 3N244, 3N245 (TX, TXV)
3N261, 3N262, 3N263 (TX, TXV)
3N261, 3N262, 3N263 (TX, TXV)
3N261, 3N262, 3N263 (TX, TXV)
-
-
0.8
1.0
0.7
0.8
1.0
0.7
-
-
-
-
-
-
-
-
1.2
1.5
1.3
1.5
1.2
1.5
1.7
1.3
V
IF = 2 mA
IF = 50 mA
IF = 10 mA
IF = 10 mA, TA = -55° C
IF = 10 mA, TA = -100° C
IF = 10 mA
IF = 10 mA, TA = -55° C
IF = 10 mA, TA = -100° C
VR Reverse Voltage
3C91C, 3C92C (TX, TXV)
7
-
- V
IR = 0.1 mA
IR
Reverse Current
3C91C, 3C92C (TX, TXV)
3N243, 3N244, 3N245 (TX, TXV)
3N261, 3N262, 3N263 (TX, TXV)
-
-
-
-
-
-
1
100
100
µA
VR= 3.0 V
VR= 2.0 V
VR= 2.0 V
CIN Diode Capacitance
3C91C, 3C92C (TX, TXV)
-
25
- pF
V = 0, f = 1 MHz
V(BR)CEO
Collector-Emitter Breakdown Voltage
3C91C, 3C92C (TX, TXV)
3N243, 3N244, 3N245 (TX, TXV)
3N261, 3N262, 3N263 (TX, TXV)
50
30
40
-
-
-
-
-
-
V
IC = 10.0 mA
I
C = 1.0 mA
I
C = 1.0 mA
V(BR)ECO
Emitter-Collector Breakdown Voltage
3C91C, 3C92C (TX, TXV)
3N243, 3N244, 3N245 (TX, TXV)
3N261, 3N262, 3N263 (TX, TXV)
7
5
7
-
-
-
-
-
-
V
IC = 10 µA
IE = 100 µA
IE = 100 µA
ICEO
Collector Dark Current
3C91C, 3C92C (TX, TXV)
3C91C, 3C92C (TX, TXV)
3N243, 3N244, 3N245 (TX, TXV)
3N243, 3N244, 3N245 (TX, TXV)
3N261, 3N262, 3N263 (TX, TXV)
3N261, 3N262, 3N263 (TX, TXV)
-
-
-
-
-
-
-
-
-
-
-
-
10
50
100
100
100
100
nA
nA
nA
µA
µA
µA
VCE = 5 V
VCE = 50 V
VCE = 10.0 V
VCE = 10.0 V, TA = 100° C
VCE = 10.0 V
VCE = 10.0 V, TA = 100° C
Output Phototransistor
OPTEK reserves the right to make changes at any time in order to improve design and to supply the best product possible.
OPTEK Technology Inc. — 1645 Wallace Drive, Carrollton, Texas 75006
Phone: (972) 323-2200 or (800) 341-4747 FAX: (972) 323-2396 sensors@optekinc.com www.optekinc.com
Issue A.3 11/09
Page 4 of 5
Hi-Reliability Optically Coupled Isolator
3C91C, 3C92C, 3N243, 3N244, 3N245, 3N261, 3N262, 3N263
(TX, TXV)
Electrical Characteristics (TA = 25°C unless otherwise noted)
SYMBOL PARAMETER MIN TYP MAX UNITS TEST CONDITIONS
Coupled
IC(ON)
On-State Collector Current
3C91C, 3C92C (TX, TXV)
3C91C, 3C92C (TX, TXV)
3N243 (TX, TXV)
3N243 (TX, TXV)
3N243 (TX, TXV)
3N243 (TX, TXV)
3N244 (TX, TXV)
3N244 (TX, TXV)
3N244 (TX, TXV)
3N244(TX, TXV)
3N245 (TX, TXV)
3N245 (TX, TXV)
3N245(TX, TXV)
3N245(TX, TXV)
3N261(TX, TXV)
3N261 (TX, TXV)
3N261 (TX, TXV)
3N262 (TX, TXV)
3N262(TX, TXV)
3N262 (TX, TXV)
3N263 (TX, TXV)
3N263(TX, TXV)
3N263(TX, TXV)
4.0
3.0
1.5
0.3
0.5
0.5
3.0
0.8
1.0
1.0
6.0
1.5
1.5
1.5
0.5
0.7
0.5
1.0
1.4
1.0
2.0
2.8
2.0
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
20
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
5
-
-
10
-
-
mA
IF = 10 mA , VCE = 5 V
IF = 10 mA , VCE = 0.4 V
IF = 10 mA , VCE = 10.0 V
IF = 3 mA , VCE = 10.0 V
IF = 10 mA , VCE = 10.0 V, TA = 55° C
IF = 10 mA , VCE = 10.0 V, TA = 100° C
IF = 10 mA , VCE = 10.0 V
IF = 3 mA , VCE = 10.0 V
IF = 10 mA , VCE = 10.0 V, TA = 55° C
IF = 10 mA , VCE = 10.0 V, TA = 100° C
IF = 10 mA , VCE = 10.0 V
IF = 3 mA , VCE = 10.0 V
IF = 10 mA , VCE = 10.0 V, TA = 55° C
IF = 10 mA , VCE = 10.0 V, TA = 100°
IF = 1 mA , VCE = 5.0 V
IF = 2.0 mA , VCE = 5.0 V, TA = 55° C
IF = 2.0 mA , VCE = 5.0 V, TA = 100° C
IF = 1 mA , VCE = 5.0 V
IF = 2.0 mA , VCE = 5.0 V, TA = 55° C
IF = 2.0 mA , VCE = 5.0 V, TA = 100° C
IF = 1 mA , VCE = 5.0 V
IF = 2.0 mA , VCE = 5.0 V, TA = 55° C
IF = 2.0 mA , VCE = 5.0 V, TA = 100° C
VCE(SAT)
Collector-Emitter Saturation Voltage
3C91C, 3C92C (TX, TXV)
3N243, 3N244, 3N245 (TX, TXV)
3N243, 3N244, 3N245 (TX, TXV)
3N243, 3N244, 3N245 (TX, TXV)
3N261, 3N262, 3N263 (TX, TXV)
3N261, 3N262, 3N263 (TX, TXV)
3N261, 3N262, 3N263 (TX, TXV)
-
-
-
-
-
-
-
-
-
-
-
-
-
-
0.4
0.3
0.3
0.3
0.3
0.3
0.3
V
IF = 50 mA , IC = 10 mA
IF = 20 mA , IC = 1.50 mA
IF = 20 mA , IC = 3.0 mA
IF = 20 mA , IC = 6.0 mA
IF = 2.0 mA , IC = 0.50 mA
IF = 2.0 mA , IC = 1.0 mA
IF = 2.0 mA , IC = 2.0 mA
tON Turn-on Time
3C91C, 3C92C (TX, TXV)
-
-
9 µs
VCC = 5 V, IC = 2 mA, RL = 100 Ω
tIOFF Turn-off Time
3C91C, 3C92C (TX, TXV))
-
-
6 µs
VCC = 5 V, IC = 2 mA, RL = 100 Ω
OPTEK reserves the right to make changes at any time in order to improve design and to supply the best product possible.
OPTEK Technology Inc. — 1645 Wallace Drive, Carrollton, Texas 75006
Phone: (972) 323-2200 or (800) 341-4747 FAX: (972) 323-2396 sensors@optekinc.com www.optekinc.com
Issue A.3 11/09
Page 5 of 5
Hi-Reliability Optically Coupled Isolator
3C91C, 3C92C, 3N243, 3N244, 3N245, 3N261, 3N262, 3N263
(TX, TXV)
Electrical Characteristics (TA = 25°C unless otherwise noted)
SYMBOL PARAMETER MIN TYP MAX UNITS TEST CONDITIONS
Coupled
CIO
Input-to-Output Capacitance
3C91C, 3C92C (TX, TXV)
3N243, 3N244, 3N245 (TX, TXV)
3N261, 3N262, 3N263 (TX, TXV)
-
-
-
2
-
-
2.5
5.0
5.0
pF
f = 1 MHz
VIO = 0 V, f = 1.00 MHz(1)
VIO = 0 V, f = 1.00 MHz(1)
IIO
Leakage Input -to-Output
3N243, 3N244, 3N245 (TX, TXV)
3N261, 3N262, 3N263 (TX, TXV)
-
-
-
-
100
10
nA
VIO = ± 1.00 kVDC(1)
VIO = ± 1.00 kVDC(1)
RIO Isolation Resistance
3C91C, 3C92C (TX, TXV)
109
-
- Ω
VIO = +1 kV
tr
Output Rise Time
3N243, 3N244, 3N245 (TX, TXV)
3N261, 3N262 (TX, TXV)
3N263 (TX, TXV)
-
-
-
-
-
-
10
20
25
µs
VCC = 10.0 V, IF = 10.0 mA, RL = 100 Ω(2)
VCC = 10.0 V, IF = 5.0 mA, RL = 100 Ω(2)
VCC = 10.0 V, IF = 5.0 mA, RL = 100 Ω(2)
tf
Output Fall Time
3N243, 3N244, 3N245 (TX, TXV)
3N261, 3N262 (TX, TXV)
3N263 (TX, TXV)
-
-
-
-
-
-
10
10
25
µs
VCC = 10.0 V, IF = 10.0 mA, RL = 100 Ω(2)
VCC = 10.0 V, IF = 5.0 mA, RL = 100 Ω(2)
VCC = 10.0 V, IF = 5.0 mA, RL = 100 Ω(2)
Notes:
1. Measured with input leads shorted together and output leads shorted together.
2. The input waveform is supplied by a generator with the following characteristics:
ZOUT = 50 Ω, tr ≤ 15 ns, duty cycle ~ 1%, pulse width ~ 100 ms
VF vs IF vs TA
0.50
0.60
0.70
0.80
0.90
1.00
1.10
1.20
1.30
1.40
1.50
0 1020304050
I
F
(mA)
V
F
(V)
-55
-35
-15
+5
+25
+45
+65
+85
+105
+125
+135
I
C(ON)
vs I
F
vs T
A
0.0
0.5
1.0
1.5
2.0
2.5
0 1020304050
I
F
(mA)
I
C(ON)
(mA)
-55
-35
-15
+5
+25
+45
+65
+85
+105
+125
+135
Normalized @ 20 mA and 25° C
