ISO7720DR.B datasheet(10/51 Pages) TI2

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6.6 Insulation Specifications

PARAMETER

TEST CONDITIONS

VALUE

UNIT

DWV

IEC 60664-1

CLR

External clearance(1)

Shortest terminal-to-terminal distance through air

8.5

CPG

External creepage(1)

Shortest terminal-to-terminal distance across the package

surface

8.5

DTI

Distance through the

insulation

Minimum internal gap (internal clearance)

µm

CTI

Comparative tracking index

DIN EN 60112 (VDE 0303-11); IEC 60112; UL 746A

>600

Material Group

According to IEC 60664-1

Overvoltage category per IEC

60664-1

Rated mains voltage ≤ 150 VRMS

I–IV

I-IV

Rated mains voltage ≤ 300 VRMS

I–IV

I-III

Rated mains voltage ≤ 600 VRMS

I–IV

n/a

Rated mains voltage ≤ 1000 VRMS

I-III

n/a

DIN EN IEC 60747-17 (VDE 0884-17)(2)

VIORM

Maximum repetitive peak

isolation voltage

AC voltage (bipolar)

ISO772x

2121

637

VPK

ISO7721B

1414

n/a

VIOWM

Maximum working isolation

voltage

AC voltage; time-dependent dielectric

breakdown (TDDB) test, see Figure 9-6

ISO772x

1500

450

VRMS

ISO7721B

1000

n/a

DC voltage

ISO772x

2121

637

VDC

ISO7721B

1414

n/a

VIOTM

Maximum transient isolation

voltage

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

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

8000

7071

4242

VPK

VIMP

Maximum impulse voltage (3)

Tested in air, 1.2/50-μs waveform per

IEC 62368-1

ISO772x

8000

5000

VPK

ISO7721B

6000

n/a

VIOSM

Maximum surge isolation

voltage(4)

VIOSM ≥ 1.3 x VIMP; Tested in oil

(qualification test),

1.2/50-µs waveform, per IEC 62368-1

ISO772x

12800

10000

VPK

ISO7721B

7800

n/a

VPK

qpd

Apparent charge(5)

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

Vini = VIOTM, tini = 60 s;

Vpd(m) = 1.2 × VIORM , tm = 10 s

≤ 5

Method a: After environmental tests

subgroup 1,

Vini = VIOTM, tini = 60 s;

Vpd(m) = 1.6 x VIORM,

tm = 10 s (ISO772x)

≤ 5

Vpd(m) = 1.3 x VIORM,

tm = 10 s (ISO7721B)

≤ 5

n/a

Method b: At routine test (100% production) and preconditioning

(type test);

Vini = 1.2 x VIOTM, tini = 1 s;

Vpd(m) = 1.875 x VIORM (ISO772x) or Vpd(m) = 1.5 x VIORM

(ISO7721B) , tm = 1 s (method b1) or

Vpd(m) = Vini, tm = tini (method b2)

≤ 5

CIO

Barrier capacitance, input to

output(6)

VIO = 0.4 × sin (2 πft), f = 1 MHz

~0.5

RIO

Isolation resistance(6)

VIO = 500 V, TA = 25°C

> 1012

VIO = 500 V, 100°C ≤ TA ≤ 125°C

> 1011

VIO = 500 V at TS = 150°C

> 109

Pollution degree

Climatic category

55/125/

UL 1577

ISO7720, ISO7721

SLLSEP3G – NOVEMBER 2016 – REVISED MAY 2024

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