AMC1311-Q1
SBAS897C – MARCH 2018 – REVISED JUNE 2022
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6.6 Insulation Specifications
over operating ambient temperature range (unless otherwise noted)
PARAMETER
TEST CONDITIONS
VALUE
UNIT
GENERAL
CLR
External clearance(1)
External creepage(1)
Shortest pin-to-pin distance through air
≥ 8.5
≥ 8.5
mm
mm
CPG
Shortest pin-to-pin distance across the package surface
Minimum internal gap (internal clearance) of the double
insulation
DTI
CTI
Distance through insulation
≥ 0.021
mm
V
Comparative tracking index
Material group
DIN EN 60112 (VDE 0303-11); IEC 60112
According to IEC 60664-1
≥ 600
I
Rated mains voltage ≤ 600 VRMS
Rated mains voltage ≤ 1000 VRMS
I-IV
I-III
Overvoltage category
per IEC 60664-1
DIN EN IEC 60747-17 (VDE 0884-17)(2)
Maximum repetitive peak
VIORM
At AC voltage
2120
VPK
isolation voltage
At AC voltage (sine wave)
1500
2120
7000
8400
9800
VRMS
VDC
Maximum-rated isolation
VIOWM
working voltage
At DC voltage
VTEST = VIOTM, t = 60 s (qualification test)
VTEST = 1.2 × VIOTM, t = 1 s (100% production test)
Tested in air, 1.2/50-µs waveform per IEC 62368-1
Maximum transient
VIOTM
VPK
isolation voltage
VIMP
Maximum impulse voltage(3)
VPK
VPK
Maximum surge
Tested in oil (qualification test),
1.2/50-µs waveform per IEC 62368-1
VIOSM
12800
≤ 5
isolation voltage(4)
Method a, after input/output safety test subgroups 2 and 3,
Vini = VIOTM, tini = 60 s, Vpd(m) = 1.2 × VIORM, tm = 10 s
Method a, after environmental tests subgroup 1,
Vini = VIOTM, tini = 60 s, Vpd(m) = 1.6 × VIORM, tm = 10 s
≤ 5
qpd
Apparent charge(5)
pC
Method b1, at routine test (100% production) and
preconditioning (type test), Vini = VIOTM, tini = 1 s, Vpd(m) = 1.875
× VIORM, tm = 1 s
≤ 5
Barrier capacitance,
input to output(6)
CIO
RIO
VIO = 0.5 VPP at 1 MHz
~1.5
pF
Ω
VIO = 500 V at TA = 25°C
> 1012
> 1011
> 109
Insulation resistance,
input to output(6)
VIO = 500 V at 100°C ≤ TA ≤ 125°C
VIO = 500 V at TS = 150°C
Pollution degree
Climatic category
2
55/125/21
UL1577
VTEST = VISO = 5000 VRMS, t = 60 s (qualification),
VTEST = 1.2 × VISO = 6000 VRMS, t = 1 s (100% production test)
VISO
Withstand isolation voltage
5000
VRMS
(1) Apply creepage and clearance requirements according to the specific equipment isolation standards of an application. Care must 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 (PCB) do not reduce this distance. Creepage and clearance on a PCB become equal in certain cases. Techniques
such as inserting grooves, ribs, or both on a PCB are used to help increase these specifications.
(2) This coupler is suitable for safe 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 to determine the surge immunity of the package.
(4) Testing is carried in oil to determine the intrinsic surge immunity of the isolation barrier.
(5) Apparent charge is electrical discharge caused by a partial discharge (pd).
(6) All pins on each side of the barrier are tied together, creating a two-pin device.
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