SDT400
DC Input
Optocoupler
The SDT400 consists of a phototransistor optically coupled to a light emitting diode. Optical coupling between the input LED and output
phototransistor allows for high isolation levels while maintaining low-level DC signal control capability. The SDT400 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 input-to-output isolation package (5000 Vrms)
Low input power consumption
High stability
Miniature 4 pin DIP package
CTR (CTR:MIN 50% at If=5mA Vce=5V)
Registers, copiers, Automatic Vending Machines
System appliances, measuring instruments
Computer terminals, PLCs
Telecommunications, telephones
Home Appliances
Digital logic inputs
Microprocessor inputs
Switching power supply, laser beam printers, etc.
Surface Mount Option
-S
Tape and Reel Option
-TR
PARAMETER
UNIT
MIN
TYP
MAX
Storage Temperature
C
-55
125
Operating Temperatu
re C
-40
100
Input Forward Current
mA
50
Input Peak Forward
Current
A
1
Reverse Input Control
Voltage
V
6
Total Power Dissipation
mW
200
1
2
4
3
+ Input
- Input
Collector
Emitter
UL and C-UL Approved, File #E201932
rev 1.0
Solid State Optronics, Inc.
1.888.377.4776
www.ssousa.com
SDT400
DC Input
Optocoupler
ELECTRICAL CHARACTERISTICS - 25
PARAMETER
UNIT
MIN
TYP
MAX TEST CONDITIONS
INPUT SPECIFICATIONS
Forward Voltage
V
1.2
1.4
If = 20mA
Reverse Current
10
Vr = 4V
A
OUTPUT SPECIFICATIONS
Collector-Emitter Breakdown Voltage
V
60
Ic = 10uA
Emitter-Collector Breakdown Voltage
V
6
Ie = 10uA
Dark Current
0.1
Vce = 20V
A
Floating Capacitance
p
0.6
1
V = 0, f=1MHz
F
Saturation Voltage
V
0.1
0.2
If = 20mA, Ic = 1mA
Current Transfer Ratio
%
50
600
If = 5mA, Vce = 5V
Rise Time
4
Ic = 2mA, Vc
e = 2V, Rc = 100 ohms
s
Fall Time
3
Ic = 2mA, Vc
e = 2V, Rc = 100 ohms
s
COUPLED SPECIFICATIONS
Isolation Voltage
V
5000
T = 1 minute
Isolation Resistance
G
50
CTR CLASSIFICATION
-A
%
60
160
-B
%
130
260
-C
%
200
400
-D
%
300
600
-E
%
50
600
rev 1.0
Solid State Optronics, Inc.
1.888.377.4776
www.ssousa.com
SDT400
DC Input
Optocoupler
PERFORMANCE DATA
rev 1.0
Solid State Optronics, Inc.
1.888.377.4776
www.ssousa.com
Fig.
2
Current Transfer Ratio vs.
Forward Current
Forward Current I
F
(mA)
Current transfer ratio CTR (%)
Fig.
3
Collector Power Dissipation vs.
Ambient Temperature
Ambient Temperature Ta (C)
Collector Power Dissipation Pc (mW)
Fig.
5
Forward Current vs. Ambient
Temperature
Ambient Temperature Ta (C)
Forward Current I
F
(mA)
Fig.
6
Forward Current vs. Forward
Voltage
Forward Voltage V
F
(V)
Forward Current IF (mA)
Fig.
4
Collector Dark Current vs.
Ambient Temperature
Ambient Temperature Ta (C)
Collector Dark Current Iceo (A)
Fig.
7
Collector Current vs. Collector-
emitter Voltage
Collector-emitter Voltage V
CE
(V)
Collector Current Ic (mA)
Fig.
1
Collector-emitter Saturation
Voltage vs. Forward Current
Forward Current I
F
(mA)
Collector-emitter Saturation V
oltage Vce (V)
Fig.
8
Response Time vs. Load
Resistance
Load Resistance R
L
(K ohm)
Response Rise T
ime (us)
Fig.
9
Response Time vs. Load
Resistance
Load Resistance R
L
(K ohm)
Response Rise T
ime (us)
SDT400
DC Input
Optocoupler
MECHANICAL DIMENSIONS
4 PIN DUAL IN-LINE PACKAGE
4 PIN SURFACE MOUNT DEVICE
END VIEW
END VIEW
TOP VIEW
TOP VIEW
BOTTOM VIEW
BOTTOM VIEW
rev 1.0
Solid State Optronics, Inc.
1.888.377.4776
www.ssousa.com
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