4
Insulation and Safety Related Specications
Parameter Symbol Value Units Conditions
Minimum External Air
Gap (Clearance)
L(I01) >5 mm Measured from input terminals to output terminals,
shortest distance through air.
Minimum External
Tracking (Creepage)
L(I02) >5 mm Measured from input terminals to output terminals,
shortest distance path along body.
Minimum Internal Plastic
Gap (Internal Clearance)
0.08 mm Insulation thickness between emitter and detector;
also known as distance through insulation.
Tracking Resistance
(Comparative Tracking Index)
CTI >175 V DIN IEC 112/VDE 0303 Part 1
Isolation Group IIIa Material Group (DIN VDE 0109)
IEC/EN/DIN EN 60747-5-5 Insulation Related Characteristics
Description Symbol
ACPL-M71T/
ACPL-M72T Units
Maximum Working Insulation Voltage V
IORM
567 V
PEAK
Input to Output Test Voltage, Method b
†
V
IORM
x 1.875 = V
PR
, 100% Production
Test with t
m
= 1 sec, Partial Discharge < 5 pC
V
PR
1063 V
PEAK
Input to Output Test Voltage, Method a
†
V
IORM
x 1.6 = V
PR
, Type and Sample Test,
t
m
= 10 sec, Partial Discharge < 5 pC
V
PR
907 V
PEAK
Highest Allowable Overvoltage
†
(Transient Overvoltage, t
ini
= 60 sec)
V
IOTM
6000 V
PEAK
Safety Limiting Values
(Maximum values allowed in the event of a failure,
also see Thermal Derating curve, Figure 11.)
Case Temperature T
s
150 °C
Input Current I
s, INPUT
150 mA
Output Power P
s,OUTPUT
600 mW
Insulation Resistance at T
S
, V
IO
= 500 V R
IO
≥10
9
Ω