Datasheet

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
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 conven-
tional 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.
Functional Diagram
Schematic
4 3
1 2
PIN NO. AND INTERNAL
CONNECTION DIAGRAM
1. ANODE
2. CATHODE
3. EMITTER
4. COLLECTOR
1
2
ANODE
CATHODE
V
F
+
–
I
F 4
3
COLLECTOR
EMITTER
I
C
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.
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