SDD450
DC Input
Optocoupler
The SDD450 consists of a Photo Darlington transistor optically coupled to a light emitting diode. Optical coupling between the input LED
and output Photo Darlington allows for high isolation levels while maintaining low-level DC signal control capability. The SDD450 provides
an optically isolated method of controlling many interface applications such as telecommunications, industrial control and instrumentation
circuitry.
DESCRIPTION
FEATURES
APPLICATIONS
OPTIONS/SUFFIXES
SCHEMATIC DIAGRAM
MAXIMUM RATINGS
APPROVALS
High current transfer ratio (CTR:MIN 1000%)
High input-to-output isolation voltage (3750 Vrms)
Mini-flat package
System appliances, measuring instruments
Industrial robots
Copiers, automated vending machines
Signal transmission between varying circuits
Telephone sets
Fax machines
Interface with various power supply circuits
Numerical control machines
Tape and Reel
-TR
PARAMETER
UNIT
MIN
TYP
MAX
Storage Temperature
C
-40
125
Operating Temperature
C
-40
100
Continuous Input Current
mA
50
Transient Input Current
A
1
Reverse Input Control
Voltage
V
6
Output Power Dissipation
mW
170
UL and C-UL Approved, File #E201932
rev 1.0
Solid State Optronics, Inc.
1.888.377.4776
www.ssousa.com
1. Anode
2. Cathode
3. Emitter
4. Collector
SDD450
1.888.377.4776
www.ssousa.com
Fig.2 Collector Power Dissipation vs.
Ambient Temperature
Ambient temperature Ta (C)
Collector power dissipation Pc (mW)
Fig.1 Forward Current vs. Ambient
Temperature
Ambient temperature Ta (C)
Forward current I
F
(mA)
Fig.3 Peak Forward Current vs. Duty
Ratio
Duty ratio
Peak forward current I
FM
(mA)
Fig.5 Current Transfer Ratio vs.
Forward Current
Forward current I
F
(mA)
Current transfer ratio CTR (%)
Fig.6 Collector Current vs. Collector-
emitter Voltage
Collector-emitter voltage V
CE
(V)
Collector current Ic (mA)
Fig.8 Collector-emitter Saturation
Voltage vs. Ambient
Temperature
Ambient Temperature Ta (C)
Collector-emitter saturation voltage V
CE
(SA
T) (V)
Fig.9 Collector Dark Current vs.
Ambient Temperature
Ambient Temperature Ta (C)
Collector dark current I
CEO
(A)
Fig.11 Frequency Response
Frequency f (KHz)
V
oltage gain A
v
(dB)
Fig.4 Forward Current vs. Forward
Voltage
Forward voltage V
F
(V)
Forward current I
F
(mA)
Fig.7 Relative Current Transfer Ratio
vs. Ambient Temperature
Ambient Temperature Ta (C)
Relative current transfer ratio (%)
Fig.10 Response Time vs. Load
Resistance
Load resistance R
L
(K ohm)
Response T
ime (us)
Fig.12 Collector- emitter Saturation
Voltage vs. Forward current
Ambient temprature Ta (C)
Collector-emitter saturation voltage V
CE
(SA
T) (V)
MECHANICAL DIMENSIONS
4 PIN SMALL OUTLINE PACKAGE
rev 1.0
Solid State Optronics, Inc.
1.888.377.4776
www.ssousa.com
END VIEW
TOP VIEW
BACK VIEW
.275" 0.015"
(6.985 0.4mm)
.80" 0.005"
(1.96 0.13mm)
.170" 0.010"
(4.165 0.3mm)
SDD450
DC Input
Optocoupler
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