7.6 Insulation Specifications

PARAMETER

TEST CONDITIONS

SPECIFICATIONS

UNIT

DW-16

IEC 60664-1

CLR

External clearance (1)

Side 1 to side 2 distance through air

>8

mm

CPG

External creepage (1)

Side 1 to side 2 distance across package surface >8

mm

DTI

Distance through the insulation

Minimum internal gap (internal clearance)

>17

µm

CTI

Comparative tracking index

IEC 60112; UL 746A

>600

V

Material Group

According to IEC 60664-1

I

Overvoltage category

Rated mains voltage ≤ 600 VRMS

I-IV

Rated mains voltage ≤ 1000 VRMS

I-III

DIN VDE V 0884-11:2017-01(2)

VIORM

Maximum repetitive peak isolation voltage AC voltage (bipolar)

1500

VPK

VIOWM

Maximum working isolation voltage

AC voltage (sine wave); time-dependent dielectric

breakdown (TDDB) test; see Figure 10-7

1060

VRMS

DC voltage

1500

VDC

VIOTM

Maximum transient isolation voltage

VTEST = VIOTM , t = 60 s (qualification); VTEST =

1.2 × VIOTM, t = 1 s (100% production)

7071

VPK

VIOSM

Maximum surge isolation voltage

ISO141x (3)

Test method per IEC 62368-1, 1.2/50 µs

waveform, VTEST = 1.6 × VIOSM = 10000 VPK

(qualification)

6250

VPK

Maximum surge isolation voltage

ISO141xB (3)

Test method per IEC 62368-1, 1.2/50 µs

waveform, VTEST = 1.3 × VIOSM = 6000 VPK

(qualification)

4615

VPK

qpd

Apparent charge (4)

Method a: After I/O safety test subgroup 2/3, Vini

= VIOTM, tini = 60 s; Vpd(m) = 1.2 × VIORM , tm = 10

s

≤ 5

pC

Method a: After environmental tests subgroup 1,

Vini = VIOTM, tini = 60 s;

ISO14xx: Vpd(m) = 1.6 × VIORM , tm = 10 s

ISO14xxB: Vpd(m) = 1.2 × VIORM , tm = 10 s

≤ 5

Method b1: At routine test (100% production) and

preconditioning (type test), Vini = VIOTM, tini = 1 s;

ISO14xx: Vpd(m) = 1.875 × VIORM , tm = 1 s

ISO14xxB: Vpd(m) = 1.5 × VIORM , tm = 1 s

≤ 5

CIO

Barrier capacitance, input to output (5)

VIO = 0.4 × sin (2 πft), f = 1 MHz

1

pF

RIO

Insulation resistance, input to output (5)

VIO = 500 V, TA = 25°C

> 1012

Ω

VIO = 500 V, 100°C ≤ TA ≤ 150°C

> 1011

VIO = 500 V at TS = 150°C

> 109

Pollution degree

2

Climatic category

40/125/21

UL 1577

VISO

Withstand isolation voltage

VTEST = VISO , t = 60 s (qualification);

VTEST = 1.2 × VISO , t = 1 s (100% production)

5000

VRMS

(1)

Creepage and clearance requirements should be applied according to the specific equipment isolation standards of an application.

Care should be taken to maintain the creepage and clearance distance of a board design to ensure that the mounting pads of the

isolator on the printed-circuit board do not reduce this distance. Creepage and clearance on a printed-circuit board become equal

in certain cases. Techniques such as inserting grooves, ribs, or both on a printed circuit board are used to help increase these

specifications.

(2)

ISO14xx is suitable for safe electrical insulation and ISO14xxB is suitable for basic electrical insulation only within the safety ratings.

Compliance with the safety ratings shall be ensured by means of suitable protective circuits.

(3)

Testing is carried out in air or oil to determine the intrinsic surge immunity of the isolation barrier.

(4)

Apparent charge is electrical discharge caused by a partial discharge (pd).

(5)

All pins on each side of the barrier tied together creating a two-pin device.

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SLLSF22H – APRIL 2018 – REVISED JUNE 2024

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