Optoisolators (Photocouplers)
CNZ3731, CNC7C501, CNZ3734 CNC2S501, CNC7C502, CNC7H501
Optoisolators
Overview
The CNZ3731 series of optoisolators consist of a GaAs infrared LED which is optically coupled with a Si NPN Darlington phototransistor, and housed in a small DIL package. The series provides high I/O isolation voltage and high collector/emitter isolation voltage, as well as a high current transfer ratio (CTR). This opto isolator series also includes the two-channel CNC7C501 and the fourchannel CNZ3734, and A type of these models with increased collector to emitter breakdown voltage (VCEO > 350V).
Features
High collector to emitter breakdown voltage : VCEO > 300 V,
A type : VCEO > 350 V
High current transfer ratio with Darlington phototransistor output : CTR = 4000% (typ.)
High I/O isolation voltage : VISO ³ 5000 Vrms
Small DIL package for saving mounting space
UL listed (UL File No. E79920)
A-type models have a guaranteed internal insulating distance of 0.4 mm
Applications
Telephones
Telephone exchange
FAX
Programmable controllers
Signal transfer between circuits with different potentials and impedances
Pin Connection
CNZ3731 |
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CNZ3734 |
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CNC2S501 |
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CNC7H501 |
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1 |
4 |
1 |
16 |
2 |
3 |
2 |
15 |
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Top View |
3 |
14 |
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CNC7C501 |
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CNC7C502 |
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4 |
13 |
1 |
8 |
5 |
12 |
2 |
7 |
6 |
11 |
3 |
6 |
7 |
10 |
4 |
5 |
8 |
9 |
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Top View |
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Top View |
CNZ3731/CNC2S501 |
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Unit : mm |
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LED Mark |
5.2 max. |
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0.5 min. |
2.54 min. |
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±0.3 |
1 |
4 |
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4.58 |
2 |
3 |
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7.62±0.3 |
+0.15 –0 |
4-0.5±0.1 |
-1.2±0.15 |
0.25 |
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6.2±0.5 |
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3.850.3± |
2.0 |
0.25 |
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4 |
2.54± |
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1: Anode |
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15˚ |
15˚ |
2: Cathode |
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to |
to |
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0 |
0 |
3: Emitter |
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4: Collector |
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CNC7C501/CNC7C502 |
Unit : mm |
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LED Mark |
5.2 max. |
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0.5 min. |
2.54 min. |
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0.3 |
1 |
8 |
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2 |
7 |
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9.66± |
8-0.5±0.1 8-1.2±0.15 2.54±0.25 |
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3 |
6 |
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4 |
5 |
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7.62±0.3 |
+0.15 –0 |
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6.2±0.5 |
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0.3 |
0.25 |
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3.85± |
2.0 |
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1,3: Anodee |
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2,4: Cathode |
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15˚ |
15˚ |
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5,7: Emitter |
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to |
to |
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0 |
0 |
6,8: Collector |
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CNZ3734/CNC7H501 |
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Unit : mm |
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LED Mark |
5.2 max. |
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0.5 min. |
2.54 min. |
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1 |
16 |
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2 |
15 |
16-0.5±0.1 16-1.2±0.15 2.54±0.25 |
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19.82±0.5 |
3 |
14 |
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4 |
13 |
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5 |
12 |
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6 |
11 |
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7 |
10 |
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8 |
9 |
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7.62±0.3 |
+0.15 –0 |
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6.2±0.5 |
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0.3 |
0.25 |
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3.85± |
2.0 |
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1 , 3 , 5 , 7 : Anode |
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2 , 4 , 6 , 8 : Cathode |
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15˚ |
15˚ |
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9,11,13,15: Emitter |
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to |
to |
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0 |
0 |
10,12,14,16: Collector |
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1
CNZ3731, CNC7C501, CNZ3734, CNC2S501, CNC7C502, CNC7H501 Optoisolators (Photocouplers)
Absolute Maximum Ratings (Ta = 25˚C)
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Parameter |
Symbol |
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Ratings |
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Unit |
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CNZ3731 |
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CNC7C501 |
CNC2S501 |
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CNC7C502 |
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CNZ3734 |
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CNC7H501 |
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Reverse voltage (DC) |
VR |
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6 |
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6 |
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V |
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Input (Light |
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Forward current (DC) |
IF |
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50 |
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50 |
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mA |
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emitting diode) |
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Pulse forward current |
IFP*1 |
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1 |
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1 |
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A |
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Power dissipation |
PD*2 |
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75 |
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75 |
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mW |
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Collector current |
IC |
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150 |
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150 |
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mA |
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Output (Photo |
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Collector to emitter voltage |
VCEO |
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300 |
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350 |
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V |
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transistor) |
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Emitter to collector voltage |
VECO |
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0.3 |
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0.3 |
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V |
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Collector power dissipation |
PC*3 |
300 |
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150 |
300 |
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150 |
mW |
Total power dissipation |
PT |
320 |
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200 |
320 |
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200 |
mW |
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Isolation voltage, input to output |
*4 |
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5000 |
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5000 |
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Vrms |
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VISO |
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Operating ambient temperature |
Topr |
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–30 to +100 |
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–30 to +100 |
˚C |
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Storage temperature |
Tstg |
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–55 to +125 |
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–55 to +125 |
˚C |
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*1 Pulse width £ 100 ms, repeat 100 pps |
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*2 Input power derating ratio is 0.75 mW/˚C at Ta ³ 25˚C.
*3 Output power derating ratio is 3.0 mW/˚C at Ta ³ 25˚C (CNZ3731, CNC2S501).
Output power derating ratio is 0.75 mW/˚C at Ta ³ 25˚C (CNC7C501, CNC2S502, CNZ3734, CNC7H501). *4 AC 1min., RH < 60 %
Electrical Characteristics (Ta = 25˚C)
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Parameter |
Symbol |
Conditions |
min |
typ |
max |
Unit |
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Input |
Reverse current (DC) |
IR |
VR = 3V |
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10 |
μA |
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Forward voltage (DC) |
VF |
IF = 50mA |
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1.35 |
1.5 |
V |
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characteristics |
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Capacitance between pins |
Ct |
VR = 0V, f = 1MHz |
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30 |
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pF |
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Output |
Collector cutoff current |
ICEO |
VCE = 200V |
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200 |
nA |
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characteristics |
Collector to emitter capacitance |
CC |
VCE = 10V, f = 1MHz |
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10 |
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pF |
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DC current transfer ratio |
CTR*1 |
VCE = 2V, IF = 1mA |
1000 |
4000 |
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% |
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Isolation capacitance, input to output |
CISO |
f = 1MHz |
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0.7 |
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pF |
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Transfer |
Isolation resistance, input to output |
RISO |
VISO = 500V |
1011 |
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Ω |
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characteristics |
Rise time |
tr*2 |
VCC = 10V, IC = 10mA, |
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40 |
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μs |
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Rt = 100Ω |
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Fall time |
tf*3 |
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15 |
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μs |
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Collector to emitter saturation voltage |
VCE(sat) |
IF = 1mA, IC = 2mA |
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1.0 |
V |
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*1 DC current transfer ratio (CTR) is a ratio of output current against DC input current. |
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CTR = |
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IC |
´ 100 (%) |
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IF |
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*2 tr : Time required for the collector current to increase from 10% to 90% of its final value
*3 tf : Time required for the collector current to decrease from 90% to 10% of its initial value
2