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ISO7220A-Q1
ISO7221A-Q1
ISO7221C-Q1
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IEC PACKAGE CHARACTERISTICS
DEVICE INFORMATION
SLLS965C – JULY 2009 – REVISED MAY 2012
L(I01)
PARAMETER
Minimum air gap (clearance)
TEST CONDITIONS
Shortest terminal-to-terminal distance through air
MIN
4.8
TYP
MAX
UNIT
mm
L(I02)
CTI
Minimum external tracking
(creepage)
Tracking resistance
(comparative tracking index)
Minimum internal gap (internal
clearance)
Shortest terminal-to-terminal distance across the
package surface
DIN IEC 60112 / VDE 0303 Part 1
Distance through the insulation
SOIC-8
4.3
≥ 175
0.008
mm
V
mm
>10
R IO
C IO
C I
Isolation resistance
Barrier capacitance input to
output
Input capacitance to ground
Input to output, V IO = 500 V, all pins on each side of the barrier
tied together creating a two-terminal device, T A < 100°C
Input to output, V IO = 500 V, 100°C ≤ T A ≤ max
V I = 0.4 sin (4E6 π t)
V I = 0.4 sin (4E6 π t)
>10 12
11
1
1
?
?
pF
pF
NOTE: 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 according to the measurement techniques
shown in the Isolation Glossary . Techniques such as inserting grooves and/or ribs on a printed circuit board are
used to help increase these specifications.
IEC 60664-1 RATINGS TABLE
PARAMETER
Basic isolation group
Installation classification
TEST CONDITIONS
Material group
Rated mains voltage ≤ 150 VRMS
Rated mains voltage ≤ 300 VRMS
Rated mains voltage ≤ 400 VRMS
SPECIFICATION
IIIa
I-IV
I-III
I-II
IEC 60747-5-2 INSULATION CHARACTERISTICS (1)
PARAMETER
TEST CONDITIONS
SPECIFICATION
UNIT
V IORM
Maximum working insulation voltage
560
V
Method b1, V PR = V IORM × 1.875,
V PR
Input to output test voltage
100% Production test with t = 1 s,
1050
V
Partial discharge <5 pC
V IOTM
R S
Transient overvoltage
Insulation resistance
t = 60 s
V IO = 500 V at T S
4000
>10 9
V
?
Pollution degree
2
(1)
Climatic Classification 40/125/21
Copyright ? 2009–2012, Texas Instruments Incorporated
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ISO7221C
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