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ISO7340-Q1, ISO7341-Q1, ISO7342-Q1

SLLSEK5A – JULY 2015 – REVISED AUGUST 2016

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(1)

Production tested

7.7 Safety-Related Certifications

VDE

CSA

UL

CQC

Certified according to DIN V VDE V 0884-10

(VDE V 0884-10):2006-12 and DIN EN 61010-

1 (VDE 0411-1):2011-07

Approved under CSA Component

Acceptance Notice 5A, IEC 60950-1, and

IEC 61010-1

Recognized component under

UL 1577

Certified according to

GB4943.1-2011

Basic Insulation;

Maximum Repetitive Peak Isolation Voltage,

Reinforced Insulation working voltage per

CSA 60950-1-07+A1+A2 and IEC 60950-1

2nd Ed.+A1+A2;

per CSA 61010-1-12 and IEC 61010-1 3rd

Ed.

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Reinforced Insulation, Altitude

≤

5000 m, Tropical Climate, 250

Certificate number: 40016131

Master contract number: 220991

File number: E181974

Certificate number:

CQC15001121716

7.8 Safety Limiting Values

Safety limiting intends to minimize potential damage to the isolation barrier upon failure of input or output circuitry. A failure of

the I/O can allow low resistance to ground or the supply and, without current limiting, dissipate sufficient power to overheat

the die and damage the isolation barrier, potentially leading to secondary system failures.

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Safety input, output, or supply

current

see Figure 1

290

mA

see Figure 1

443

Safety temperature

150

The safety-limiting constraint is the maximum junction temperature specified in the data sheet. The power

dissipation and junction-to-air thermal impedance of the device installed in the application hardware determines

the junction temperature. The assumed junction-to-air thermal resistance in the Thermal Information table is that

of a device installed on a high-K test board for leaded surface-mount packages. The power is the recommended

maximum input voltage times the current. The junction temperature is then the ambient temperature plus the

power times the junction-to-air thermal resistance.