HCPL-181
Phototransistor Optocoupler SMD Mini-Flat Type
Data Sheet
Lead (Pb) Free
RoHS 6 fully
compliant
RoHS 6 fully compliant options available;
-xxxE denotes a lead-free product
Description
The HCPL-181 contains a light emitting diode optically
coupled to a phototransistor. It is packaged in a 4-pin mini-
at SMD package with a 2.0 mm pro le. The small dimension
of this product allows signi cant space saving. The package
volume is 30% smaller than that of conventional DIP type.
Input-output isolation voltage is 3750 Vrms. Response
time, t
r
, is typically 4 μs and minimum CTR is 50% at input
current of 5 mA.
Schematic
Functional Diagram
CAUTION: It is advised that normal static precautions be taken in handling and assembly
of this component to prevent damage and/or degradation which may be induced by ESD.
Features
Current Transfer Ratio
(CTR: min. 50% at I
F
= 5 mA, V
CE
= 5 V)
High input-output isolation voltage
(V
iso
= 3750 Vrms)
High collector-emitter voltage (V
CEO
= 80 V)
Response time
(t
r
: typ., 4 μs at V
CE
= 2 V, I
C
= 2 mA, R
L
= 100 Ω)
Mini- at package (2.0 mm pro le) in tape and reel
package
UL approved
CSA approved
IEC/EN/DIN EN 60747-5-2 approved
Options available:
– IEC/EN/DIN EN 60747-5-2 approvals (060)
Applications
I/O interfaces for computers
System appliances, measuring instruments
Signal transmission between circuits of di erent
potentials and impedances
Feedback circuit in power supply
1
2
ANODE
CATHODE
V
F
+
–
I
F 4
3
COLLECTOR
EMITTER
I
C
4 3
12
PIN NO. AND INTERNAL CONNECTION DIAGRAM
1. ANODE
2. CATHODE
3. EMITTER
4. COLLECTOR
