ISO7821 datasheet(9/40 Pages) TI2

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Table 5-2. Insulation Characteristics

PARAMETER

TEST CONDITIONS

SPECIFICATION

UNIT

DWW

DTI

Distance through the insulation

Minimum internal gap (internal clearance)

μm

VIOWM

Maximum working isolation

voltage

Time dependent dielectric breakdown (TDDB) test

1500

2000

VRMS

2121

2828

VDC

DIN V VDE V 0884-10 (VDE V 0884-10):2006-12

VIOTM

Maximum transient isolation

voltage

VTEST = VIOTM

t = 60 sec (qualification)

t= 1 sec (100% production)

8000

VPK

VIOSM Maximum surge isolation voltage

Test method per IEC 60065, 1.2/50 µs waveform,

VTEST = 1.6 × VIOSM = 12800 VPK (1) (qualification)

8000

VPK

VIORM

Maximum repetitive peak isolation

voltage

2121

2828

VPK

VPR

Input-to-output test voltage

Method a, After Input/Output safety test subgroup 2/3,

VPR = VIORM × 1.2, t = 10 s,

Partial discharge < 5 pC

2545

3394

VPK

Method a, After environmental tests subgroup 1,

VPR = VIORM × 1.6, t = 10 s,

Partial Discharge < 5 pC

3394

4525

Method b1,After environmental tests subgroup 1,

VPR = VIORM × 1.875, t = 1 s (100% Production test)

Partial discharge < 5 pC

3977

5303

Isolation resistance

VIO = 500 V at TS

>109

Ω

Pollution degree

Climatic category

55/125/21 55/125/21

UL 1577

VISO

Withstanding isolation voltage

VTEST = VISO = 5700 VRMS, t = 60 sec (qualification);

VTEST = 1.2 × VISO = 6840 VRMS, t = 1 sec (100% production)

5700

VRMS

(1)

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

Table 5-3. Package Insulation and Safety-Related Specifications

(over recommended operating conditions (unless otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP MAX

UNIT

CLR

External clearance

Shortest terminal-to-terminal distance

through air

DW-16

8.15

DWW-16

14.5

15.0

CPG

External creepage

Shortest terminal-to-terminal distance

across the package surface

DW-16

8.15

DWW-16

14.5

15.0

CTI

Comparative tracking index

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

600

RIO

Isolation resistance, input to output(1)

VIO = 500 V, TA = 25°C

1012

Ω

VIO = 500 V, 100°C ≤ TA ≤ max

1011

Ω

CIO

Barrier capacitance, input to output(1) VIO = 0.4 x sin (2πft), f = 1 MHz

Input capacitance(2)

VI = VCC/2 + 0.4 x sin (2πft), f = 1 MHz, VCC = 5 V

(1)

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

(2)

Measured from input pin to ground.

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ISO7821, ISO7821F

SLLSEM2H – NOVEMBER 2014 – REVISED NOVEMBER 2024

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