SMD Type Photocoupler

High Density Mounting Type Photocoupler

PC817 Series

Unit:mm
SOP04
Internal connection diagram
■ Features 4 3

● Current transfer ratio

( CTR: MIN. 50% at IF = 5mA ,VCE=5V)
1 2
● High isolation voltage between input and output

1 Anode
2 Cathode
3 Emitter
4 Collector

■ Absolute Maximum Ratings Ta = 25℃

Parameter Symbol Rating Unit
Input Reverse voltage VR 6
Collector - Emitter Output Voltage VCEO 35 V
Emitter-Collector Output Voltage VECO 6
Isolation Voltage VISO 5000 Vrms
Input Forward Current IF 50 mA
Input Peak Forward Current (Note.1) IFM 1 A
Collector Current - Continuous IC 50 mA
Input Power Dissipation P 70
Collector Output Power dissipation Pc 150 mW
Total Power Dissipation Ptot 200
Junction Temperature TJ 125
Soldering temperature Tsol 260
℃
Operating Temperature Topr -30 to 100
Storage Temperature Range Tstg -55 to 125

Note.1:Pulse width≤100ms, Duty ratio : 0.001

1
 SMD Type Photocoupler

High Density Mounting Type Photocoupler

PC817 Series
■ Electrical Characteristics Ta = 25℃
Parameter Symbol Test Conditions Min Typ Max Unit
Input Forward Voltage VF IF= 20 mA 1.4
V
Input Peak Forward Voltage VFM IFM= 500 mA 3
Input Reverse Current IR VR= 4 V 10
uA
Collector- emitter cut-off current ICEO VCE= 20 V , IE= 0 10
Collector-emitter saturation voltage VCE(sat) IF = 20mA, IC = 1mA 0.1 0.2 V
10 11
Isolation resistance RISO DC 500V, 40 to 60% RH 5 x 10 10 Ω
Current Transfer Ratio CTR VCE= 5V, IF= 5mA 50 600 %
Rise time tr 4 18
VCE = 2V, IC = 2mA, RL = 100Ω uS
Fall time tf 3 18
Input Terminal Capacitance Ct 30 250
V= 0V, f=1KHz pF
Floating Capacitance Cf 0.6 1
Cut-off frequency fC VCE= 5V, IC= 2mA,RL=100Ω 80 KHz

■ Classification of CTR(%)
Type PC817A PC817B PC817C PC817D PC817
Range 80-160 130-260 200-400 300-600 50-600

■ Typical Characterisitics

Fig. 1 Forward Current vs.

Ambient Temperature
60

50
Forward current I F ( mA )

40

30

20

10

0
- 25 0 25 50 75 100 125
Ambient temperature Ta ( ˚C)

2
SMD Type Photocoupler

High Density Mounting Type Photocoupler

PC817 Series
■ Typical Characterisitics

Fig. 2 Collector Power Dissipation vs. Fig. 3 Peak Forward Current vs. Duty Ratio
Ambient Temperature
200 10 000
Pulse width <=100 µ s
5 000 T a = 25˚C
Collector power dissipation P C ( mW )

2 000

( mA )
150
1 000

FM
500

Peak forward current I

100 200
100
50
50
20
10

0 5
- 30 0 25 50 75 100 125 5 10 - 3 2 5 10 -2 2 5 10 -1 2 5 1
Ambient temperature T a ( ˚C ) Duty ratio

Fig. 4 Current Transfer Ratio vs. Fig. 5 Forward Current vs. Forward Voltage
Forward Current
200
500
V CE = 5V T a = 75˚C
180
T a = 25˚C 200
50˚C
Current transfer ratio CTR ( % )

160 25˚C
100 0˚C
140
Forward current I F ( mA )

50 - 25˚C
120

100 20

80 10

60 5

40 2
20 1
0
1 2 5 10 20 50 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5
Forward current I F ( mA )
Forward voltage V F ( V)

Fig. 6 Collector Current vs. Fig. 7 Relative Current Transfer Ratio vs.
Collector-emitter Voltage Ambient Temperature
30 150
I F = 30mA T a = 25˚C I F = 5mA
V CE = 5V
25
Relative current transfer ratio ( % )

20mA P C ( MAX. )
Collector current I C ( mA )

20 100

15
10mA

10 50

5mA
5

0 0
0 1 2 3 4 5 6 7 8 9 - 30 0 25 50 75 100
Collector-emitter voltage V CE (V) Ambient temperature T a ( ˚C )

3
 SMD Type Photocoupler

High Density Mounting Type Photocoupler

PC817 Series
■ Typical Characterisitics
Fig. 8 Collector-emitter Saturation Voltage vs. Fig. 9 Collector Dark Current vs.
Ambient Temperature Ambient Temperature
10 -5
0.16
Collector-emitter saturation voltage V CE(sat) ( V )

I F = 20mA V CE = 20V
0.14 -6
10

Collector dark current I CEO ( A)

I C = 1mA
0.12
10 -7
0.10

10 -8
0.08

0.06 -9
10
0.04
10 - 10
0.02

0 10 - 11
- 25 0 25 50 75 100 - 25 0 25 50 75 100
Ambient temperature T a (˚C) Ambient temperature T a ( ˚C )

Fig.10 Response Time vs. Load Resistance Fig.11 Frequency Response

500
V CE = 2V V CE = 2V
200
I C = 2mA I C = 2mA
100 0
Ta = 25˚C T a = 25˚C
50
tr
Voltage gain A v ( dB )
Response time ( µ s )

20
tf 100 Ω
10
1k Ω
5 -10
RL = 10k Ω
td
2
1 ts
0.5
. -20
0.2
0.1
0.1 1 10 0.5 1 2 5 10 20 50 100 200 500

Load resistance R L ( k Ω ) Frequency f ( kHz )

Fig.12 Collector-emitter Saturation

Test Circuit for Response Time Voltage vs. Forward Current
6
Collector-emitter saturation voltage V CE(sat) ( V )

Input T a = 25˚C
VCC
Output 5 I C = 0.5mA
Input RD RL Output 10% 1mA
4 3mA
90%
td ts 5mA
tr tf 3 7mA

Test Circuit for Frepuency Response 2

VCC

RD RL Output 1

0
0 5 10 15
Forward current I F ( mA )

4
4