4

Insulation and Safety Related Specifications

Parameter

Symbol

Value

Units

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)

Description

Symbol

Value

Units

Installation classification 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 Classification

55/100/21

Pollution Degree (DIN VDE 0110/1.89)

2

Maximum Working Insulation Voltage

1414

Input to Output Test Voltage, Method b

Partial Discharge < 5 pC

2652

Input to Output Test Voltage, Method a

Partial Discharge < 5 pC

2262

8000

Safety-limiting values

(Maximum values allowed in the event of a failure)

Case Temperature

175

230

600

°C

mA

mW

Ω

Notes:

1. Insulation characteristics are guaranteed only within the safety maximum ratings, which must be ensured by protective circuits within the

application.