5

Isolation

Table 6. Isolation and safety-related specifications

Parameter

Symbol

Value

Unit

Conditions

Clearance (Minimum External Air

Gap)

CLR

8

mm

Measured from input terminals to output terminals,

shortest distance through air

Creepage (*)

(Minimum External Tracking)

CPG

8

mm

Measured from input terminals to output terminals,

shortest distance path along body

Comparative Tracking

Index (Tracking Resistance)

CTI

≥ 400

V

DIN IEC 112/VDE 0303 Part 1

Isolation Group

-

II

-

Material Group (DIN VDE 0110, 1/89, Table 1)

Table 7. Isolation characteristics

Parameter

Symbol

Test Conditions

Characteristic

Unit

Maximum Working Isolation Voltage

VIORM

-

1200

VPEAK

Input to Output test voltage

In accordance with VDE 0884-11

VPR

Method a, Type test

1920

VPEAK

VPR = VIORM ×1.6, tm = 10 s

Partial discharge < 5 pC

Method b1, 100 % Production test

2250

VPEAK

VPR = VIORM×1.875, tm = 1 s

Partial discharge < 5 pC

Transient Overvoltage (Highest

Allowable Overvoltage)

VIOTM

tini = 60 s Type test

6000

VPEAK

Maximum Surge TestVoltage

VIOSM

Type test

6000

VPEAK

Isolation Resistance

RIO

VIO = 500 V; Type test

>109

Ω

Table 8. Isolation voltage as per UL 1577

Parameter

Symbol

Characteristic

Unit

Isolation Withstand Voltage, 1min (Type test)

VISO

3535/5000

VRMS/VPEAK

Isolation TestVoltage, 1sec (100% production)

VISOtest

4242/6000

VRMS/VPEAK

Recognized under the UL 1577 Component Recognition Program - file number E362869

STGAP2SICS

Isolation

DS13402 - Rev 4

page 7/22