Datasheet
4
All Avago data sheets report the creepage and clearance
inherent to the optocoupler component itself. These di-
mensions are needed as a starting point for the equip-
ment designer when determining the circuit insulation re-
quirements. However, once mounted on a printed circuit
board, minimum creepage and clearance requirements
must be met as specied for individual equipment stan-
dards. For creepage, the shortest distance path along the
Insulation and Safety Related Specications
Parameter Symbol Value Units Conditions
Minimum External Air Gap
(Clearance)
L(101) 7.1 mm Measured from input terminals to output terminals, shortest
distance through air.
Minimum External Tracking
(Creepage)
L(102) 7.4 mm Measured from input terminals to output terminals, shortest
distance path along body.
Minimum Internal Plastic Gap
(Internal Clearance)
0.08 mm Through insulation distance conductor to conductor, usually the
straight line distance thickness between the emitter and detector.
Tracking Resistance
(Comparative Tracking Index)
CTI >175 Volts DIN IEC 112/VDE 0303 Part 1
Isolation Group
(DIN VDE0109)
IIIa Material Group (DIN VDE 0110)
surface of a printed circuit board between the solder llets
of the input and output leads must be considered. There
are recommended techniques such as grooves and ribs
which may be used on a printed circuit board to achieve
desired creepage and clearances. Creepage and clearance
distances will also change depending on factors such as
pollution degree and insulation level.
IEC/EN/DIN EN 60747-5-2 Insulation Related Characteristics
Description Symbol ACPL-312T Units
Installation classication per DIN VDE 0110/1.89, Table 1
for rated mains voltage ≤150 V rms
for rated mains voltage ≤300 V rms
for rated mains voltage ≤3450V rms
for rated mains voltage ≤3600V rms
for rated mains voltage ≤1000V rms
I-IV
I-IV
I-III
Climatic Classication 55/125/21
Pollution Degree (DIN VDE 0110/1.89) 2
Maximum Working Insulation Voltage V
IORM
630 V
PEAK
Input to Output Test Voltage, Method b†
V
IORM
x 1.875 = V
PR
, 100% Production
Test t
m
= 1 sec, Partial Discharge < 5 pC
V
PR
1181 V
PEAK
Input to Output Test Voltage, Method a†
V
IORM
x 1.5 = V
PR
, 100% Type and Sample Test
t
m
= 60 sec, Partial Discharge < 5 pC
V
PR
945 V
PEAK
Highest Allowable Overvoltage†
(Transient Overvoltage, t
ini
= 10 sec)
V
IOTM
6000 V
PEAK
Safety Limiting Values
(Maximum values allowed in the event of a failure,
also see Thermal Derating curve, Figure 11.)
Case Temperature
Input Current
Output Power
T
s
I
s, INPUT
Ps
,OUTPUT
175
230
600
°C
mA
mW
Insulation Resistance at T
S
, V
10
= 500 V R
IO
≥10
9
Ω