4
Table 3. Insulation and Safety Related Speci cations
Parameter Symbol Value Unit Conditions
Minimum External Air Gap
(External Clearance)
L(101) 8.0 mm Measured from input terminals to output terminals,
shortest distance through air
Minimum External
Tracking (External Creepage)
L(102) 8.0 mm Measured from input terminals to output terminals,
shortest distance path along body
Minimum Internal Plastic Gap
(Internal Clearance)
0.5 mm Through insulation distance, conductor to conductor,
usually the direct distance between the photoemitter
and photodetector inside the optocoupler cavity
Tracking Resistance
(Comparative Tracking Index)
CTI > 175 V DIN IEC 112/VDE 0303 Part 1
Isolation Group IIIa Material Group (DIN VDE 0110, 1/89, Table 1)
Table 4. IEC/EN/DIN EN 60747-5-5 Insulation Characteristics
[1]
Description Symbol Value Units
Installation classi cation per DIN VDE 0110/1.89, Table 1
for rated mains voltage ≤ 150 Vrms
for rated mains voltage ≤ 300 Vrms
for rated mains voltage ≤ 450 V rms
for rated mains voltage ≤ 600 Vrms
for rated mains voltage ≤ 1000 Vrms
I-IV
I-IV
I-IV
I-IV
I-III
Climatic Classi cation 55/105/21
Pollution Degree (DIN VDE 0110/1.89) 2
Maximum Working Insulation Voltage (Pending Quali cation) V
IORM
1414 Vpeak
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
2652 Vpeak
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
2262 Vpeak
Highest Allowable Overvoltage (Transient Overvoltage, t
ini
= 60 sec) V
IOTM
8000 Vpeak
Safety-limiting values (Maximum values allowed in the event of a failure)
Case Temperature
Input Current
[2]
Output Power
[2]
T
S
I
S,INPUT
P
S,OUTPUT
175
230
600
°C
mA
mW
Insulation Resistance at T
S
, V
IO
= 500 V R
S
≥ 10
9
Notes:
1. Insulation characteristics are guaranteed only within the safety maximum ratings, which must be ensured by protective circuits within the
application.