4N35, 4N36, 4N37

Vishay Semiconductors

Optocoupler, Phototransistor Output, with Base Connection

FEATURES
A 1 6 B Isolation test voltage 5000 VRMS
Interfaces with common logic families
C 2 5 C
Input-output coupling capacitance < 0.5 pF

NC 3 4 E
Industry standard dual-in-line 6 pin package
Compliant to RoHS directive 2002/95/EC and in
accordance to WEEE 2002/96/EC
21842

APPLICATIONS
i179004-5
AC mains detection
Reed relay driving
DESCRIPTION Switch mode power supply feedback
Each optocoupler consists of gallium arsenide infrared LED Telephone ring detection
and a silicon NPN phototransistor.
Logic ground isolation
AGENCY APPROVALS Logic coupling with high frequency noise rejection
Underwriters laboratory file no. E52744
BSI: EN 60065:2002, EN 60950:2000
FIMKO; EN 60065, EN 60335, EN 60950 certificate no. 25156

ORDER INFORMATION
PART REMARKS
4N35 CTR > 100 %, DIP-6
4N36 CTR > 100 %, DIP-6
4N37 CTR > 100 %, DIP-6

ABSOLUTE MAXIMUM RATINGS (1)

PARAMETER TEST CONDITION SYMBOL VALUE UNIT

INPUT
Reverse voltage VR 6 V
Forward current IF 50 mA
Surge current t 10 s IFSM 1 A
Power dissipation Pdiss 70 mW
OUTPUT
Collector emitter breakdown voltage VCEO 70 V
Emitter base breakdown voltage VEBO 7 V
IC 50 mA
Collector current
t 1 ms IC 100 mA
Power dissipation Pdiss 70 mW
COUPLER
Isolation test voltage VISO 5000 VRMS
Creepage 7 mm
Clearance 7 mm
Isolation thickness between emitter
0.4 mm
and detector

Document Number: 81181 For technical questions, contact: optocoupleranswers@vishay.com www.vishay.com

Rev. 1.2, 07-Jan-10 153
4N35, 4N36, 4N37
Vishay Semiconductors Optocoupler, Phototransistor Output,
with Base Connection

ABSOLUTE MAXIMUM RATINGS (1)

PARAMETER TEST CONDITION SYMBOL VALUE UNIT

COUPLER
Comparative tracking index DIN IEC 112/VDE 0303, part 1 175
VIO = 500 V, Tamb = 25 C RIO 1012
Isolation resistance
VIO = 500 V, Tamb = 100 C RIO 1011
Storage temperature Tstg - 55 to + 150 C
Operating temperature Tamb - 55 to + 100 C
Junction temperature Tj 100 C
max.10 s dip soldering:
Soldering temperature (2) distance to seating plane Tsld 260 C
1.5 mm
Notes
(1) T
amb = 25 C, unless otherwise specified.
Stresses in excess of the absolute maximum ratings can cause permanent damage to the device. Functional operation of the device is not
implied at these or any other conditions in excess of those given in the operational sections of this document. Exposure to absolute
maximum ratings for extended periods of the time can adversely affect reliability.
(2) Refer to wave profile for soldering condditions for through hole devices (DIP).

ELECTRICAL CHARACTERISTICS (1)

PARAMETER TEST CONDITION PART SYMBOL MIN. TYP. MAX. UNIT
INPUT
Junction capacitance VR = 0 V, f = 1 MHz Cj 50 pF
IF = 10 mA VF 1.3 1.5 V
Forward voltage (2)
IF = 10 mA, Tamb = - 55 C VF 0.9 1.3 1.7 V
Reverse current (2) VR = 6 V IR 0.1 10 A
Capacitance VR = 0 V, f = 1 MHz CO 25 pF
OUTPUT
4N35 BVCEO 30 V
Collector emitter breakdown
IC = 1 mA 4N36 BVCEO 30 V
voltage(2)
4N37 BVCEO 30 V
Emitter collector breakdown
IE = 100 A BVECO 7 V
voltage(2)
OUTPUT
4N35 BVCBO 70 V
Collector base breakdown
IC = 100 A, IB = 1 A 4N36 BVCBO 70 V
voltage (2)
4N37 BVCBO 70 V
4N35 ICEO 5 50 nA
VCE = 10 V, IF = 0
4N36 ICEO 5 50 nA
VCE = 10 V, IF = 0 4N37 ICEO 5 50 nA
Collector emitter leakage current (2)
4N35 ICEO 500 A
VCE = 30 V, IF = 0,
4N36 ICEO 500 A
Tamb = 100 C
4N37 ICEO 500 A
Collector emitter capacitance VCE = 0 CCE 6 pF
COUPLER
Resistance, input output (2) VIO = 500 V RIO 1011
Capacitance, input output f = 1 MHz CIO 0.6 pF
Notes
(1) T
amb = 25 C, unless otherwise specified.
Minimum and maximum values are testing requirements. Typical values are characteristics of the device and are the result of engineering
evaluation. Typical values are for information only and are not part of the testing requirements.
(2) Indicates JEDEC registered value.

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154 Rev. 1.2, 07-Jan-10
 4N35, 4N36, 4N37
Optocoupler, Phototransistor Output, Vishay Semiconductors
with Base Connection

CURRENT TRANSFER RATIO

PARAMETER TEST CONDITION PART SYMBOL MIN TYP. MAX UNIT
4N35 CTRDC 100 %
VCE = 10 V, IF = 10 mA 4N36 CTRDC 100 %
4N37 CTRDC 100 %
DC current transfer ratio (1)
4N35 CTRDC 40 50 %
VCE = 10 V, IF = 10 mA,
4N36 CTRDC 40 50 %
TA = - 55 C to + 100 C
4N37 CTRDC 40 50 %
Note
(1) Indicates JEDEC registered values.

SWITCHING CHARACTERISTICS
PARAMETER TEST CONDITION SYMBOL MIN. TYP. MAX. UNIT
Switching time (1) VCC = 10 V, IC = 2 mA, RL = 100 ton, toff 10 s
Note
(1) Indicates JEDEC registered values.

TYPICAL CHARACTERISTICS
Tamb = 25 C, unless otherwise specied

1.4 1.5
Normalized to:
1.3 VCE = 10 V, IF = 10 mA, TA = 25 C
VF -Forward Voltage (V)

TA = - 55 C
NCTR - Normalized CTR

CTRCE(sat) VCE = 0.4 V

1.2
1.0
TA = 25 C
1.1 TA = 50 C

1.0
0.5
0.9
TA = 85 C NCTR(SAT)
0.8 NCTR

0.7 0.0
0.1 1 10 100 0.1 1 10 100
i4n25_01 IF - Forward Current (mA) i4n25_03 IF - LED Current (mA)

Fig. 1 - Forward Voltage vs. Forward Current Fig. 3 - Normalized Non-Saturated and Saturated CTR vs.
LED Current

1.5 1.5
Normalized to: Normalized to:
VCE = 10 V, IF = 10 mA, TA = 25 C VCE = 10 V, IF = 10 mA, TA = 25 C
NCTR - Normalized CTR

NCTR - Normalized CTR

CTRCE(sat) = 0.4 V CTRCE(sat) VCE = 0.4 V

1.0 1.0
TA = 25 C TA = 70 C

0.5 0.5

NCTR(SAT) NCTR(SAT)
NCTR
NCTR
0.0 0.0
0 1 10 100 0.1 1 10 100
i4n25_02 IF - LED Current (mA) i4n25_04 IF - LED Current (mA)

Fig. 2 - Normalized Non-Saturated and Saturated CTR vs. Fig. 4 - Normalized Non-Saturated and Saturated CTR vs.
LED Current LED Current

Document Number: 81181 For technical questions, contact: optocoupleranswers@vishay.com www.vishay.com

Rev. 1.2, 07-Jan-10 155
4N35, 4N36, 4N37
Vishay Semiconductors Optocoupler, Phototransistor Output,
with Base Connection

1.5 1.5
Normalized to: Normalized to:

NCTRcb - Normalized CTRcb

VCE = 10 V, IF = 10 mA, TA = 25 C VCB = 9.3 V, IF = 10 mA, TA = 25 C
NCTR - Normalized CTR

CTRCE(sat) VCE = 0.4 V

1.0 1.0
TA = 85 C

0.5 0.5
25 C
NCTR(SAT) 50 C
NCTR 70 C

0.0 0.0
0.1 1 10 100 0.1 1 10 100
i4n25_05 IF - LED Current (mA) i4n25_08 IF - LED Current (mA)

Fig. 5 - Normalized Non-Saturated and Saturated CTR vs. Fig. 8 - Normalized CTRcb vs. LED Current and Temperature
LED Current

35 10
Normalized to:
ICE - Collector Current (mA)

30 Normalized Photocurrent IF = 10 mA, TA = 25 C

25
50 C 1
20
70 C
15
25 C 85 C
0.1
10 Nib, TA = - 20 C
Nib, TA = 20 C
5 Nib, TA = 50 C
Nib, TA = 70 C
0 0.01
0 10 20 30 40 50 60 0.1 1 10 100
i4n25_06 IF - LED Current (mA) i4n25_09 IF - LED Current (mA)

Fig. 6 - Collector Emitter Current vs. Fig. 9 - Normalized Photocurrent vs. IF and Temperature
Temperature and LED Current

105 1.2
70 C
ICEO - Collector Emitter (nA)

4
10
NhFE - Normalized hFE

1.0
103 25 C
102 - 20 C
VCE = 10 V 0.8
101 Normalized to:
IB = 20 A, VCE = 10 V,
Typical TA = 25 C
100
0.6
10- 1

10- 2 0.4
- 20 0 20 40 60 80 100 1 10 100 1000
i4n25_10 Ib - Base Current (A)
i4n25_07 Tamb- Ambient Temperature (C)

Fig. 7 - Collector Emitter Leakage Current vs. Temperature Fig. 10 - Normalized Non-Saturated hFE vs.
Base Current and Temperature

www.vishay.com For technical questions, contact: optocoupleranswers@vishay.com Document Number: 81181

156 Rev. 1.2, 07-Jan-10
 4N35, 4N36, 4N37
Optocoupler, Phototransistor Output, Vishay Semiconductors
with Base Connection

1.5
NhFE(sat) - Normalized Saturated hFE

Normalized to: VCC = 5 V

VCE = 10 V, Ib = 20 A
70 C 50 C TA = 25 C
1.0
f = 10 kHz RL
25 C DF = 50 %

- 20 C VO
0.5

VCE = 0.4 V IF = 10 mA

0.0
1 10 100 1000
i4n25_11 Ib - Base Current (A) i4n25_14

Fig. 11 - Normalized hFE vs. Base Current and Temperature Fig. 14 - Switching Schematic

1000 2.5
tPLH- Propagation Delay (s)

IF = 10 mA, TA = 25 C
tPHL - Propagation Delay (s)

VCC = 5.0 V, Vth = 1.5 V

tPHL
100 2.0

10 1.5
tPLH

1 1.0
0.1 1 10 100
i4n25_12 RL - Collector Load Resistor (k)

Fig. 12 - Propagation Delay vs. Collector Load Resistor

IF

tD
VO tR
tPLH

VTH = 1.5 V

tPHL tS tF

i4n25_13

Fig. 13 - Switching Timing

Document Number: 81181 For technical questions, contact: optocoupleranswers@vishay.com www.vishay.com

Rev. 1.2, 07-Jan-10 157
4N35, 4N36, 4N37
Vishay Semiconductors Optocoupler, Phototransistor Output,
with Base Connection

PACKAGE DIMENSIONS in millimeters

7.62 typ.
7.12 0.3

6.5 0.3

3.5 0.3

4.5 0.3

4.5 0.3
2.8 0.15
0.5 0.1

1.2 0.1 0.25

6 5 4
7.62 to 9.5 typ.

14771_2 1 2 3

PACKAGE MARKING
4N35

V YWW 24
21764-24

www.vishay.com For technical questions, contact: optocoupleranswers@vishay.com Document Number: 81181

158 Rev. 1.2, 07-Jan-10
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Revision: 02-Oct-12 1 Document Number: 91000