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
ABSOLUTE MAXIMUM RATINGS*
APPROVALS
High input-to-output isolation package (5000 Vrms)
Low input power consumption
High stability
Miniature 4 pin DIP package
CTR Range 50-600%
Registers, copiers, Automatic Vending Machines
System appliances, measuring instruments
Computer terminals, PLCs
Telecommunications, telephones
Home Appliances
Digital logic inputs
Microprocessor inputs
Switching power supply
.04" (10.16mm) lead spacing (VDE0884)
-H
Surface Mount Option
-S
Tape and Reel Option
-TR
NOTE: Suffixes listed above are not included in marking on
device for part number identification.
PARAMETER
UNIT
MIN
TYP
MAX
Storage Temperature
C
-55
125
Operating Temperature
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
*The values indicated are absolute stress ratings. Functional operation of the
device is not implied at these or any conditions in excess of those defined in
electrical characteristics section of this document. Exposure to Absolute
Ratings may cause permanent damage to the device and may adversely
affect reliability.
1
2
4
3
+ Input
- Input
Collector
Emitter
UL and C-UL Approved, File #E201932
VDE Approved, Lic # 40011227
2004 Solid State Optronics San Jos, CA
www.ssousa.com +1.408.293.4600
Page 1 of
6
SDT400
rev 1.40 (10/25/2004)
SDT400
DC Input
Optocoupler
ELECTRICAL CHARACTERISTICS - 25C
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, Vcc = 2V, Rc = 100 ohms
s
Fall Time
3
Ic = 2mA, Vcc = 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
2004 Solid State Optronics San Jos, CA
www.ssousa.com +1.408.293.4600
Page 2 of
6
SDT400
rev 1.40 (10/25/2004)
SDT400
DC Input
Optocoupler
PERFORMANCE DATA
SDT400
Collector-Emitter Saturation Voltage vs. Forward Current
N = 100, Ambient Temperature = 25C
SDT400
Current Transfer Ratio vs. Forward Current
N = 100, Ambient Temperature = 25C
SDT400
Collector Power Dissipation vs. Ambient Temperature
N = 100
SDT400
Collector Dark Current vs. Ambient Temperature
N = 100
0
10
20
30
40
60
63
66
69
72
75
78
81
Breakdow n Voltage (V)
D
e
v
i
c
e
C
ount
SDT400
Typical Vceo Distribution
N = 100, Ambient Temperature = 25C
SDT400
Forward Current vs. Ambient Temperature
2004 Solid State Optronics San Jos, CA
www.ssousa.com +1.408.293.4600
Page 3 of
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SDT400
rev 1.40 (10/25/2004)
Forward Current I
F
(mA)
Collector-emitter Saturation V
oltage Vce (V)
Forward Current I
F
(mA)
Current transfer ratio CTR (%)
Ambient Temperature Ta (C)
Collector Power Dissipation Pc (mW)
Ambient Temperature Ta (C)
Collector Dark Current Iceo (A)
N = 100, Ambient Temperature = 25C
Ambient Temperature Ta (C)
Forward Current I
F
(mA)
SDT400
DC Input
Optocoupler
PERFORMANCE DATA
SDT400
Collector Current
vs.
Collector-Emitter Voltage
N = 100, Ambient Temperature = 25C
SDT400
Forward Current vs. Forward Voltage
N = 100, Ambient Temperature = 25C
SDT400
Rise Time vs. Load Resistance
N = 100
, Ambient Termperature = 25C
SDT400
Fall Time vs. Load Resistance
N = 100, Ambient Temperature = 25C
2004 Solid State Optronics San Jos, CA
www.ssousa.com +1.408.293.4600
Page
4
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SDT400
rev 1.40 (10/25/2004)
Forward Voltage V
F
(V)
Forward Current IF (mA)
Load Resistance R
L
(K ohm)
Response Rise T
ime (us)
Load Resistance R
L
(K ohm)
Response Rise T
ime (us)
Collector-emitter Voltage V
CE
(V)
Collector Current Ic (mA)
SDT400
DC Input
Optocoupler
MECHANICAL DIMENSIONS
2004 Solid State Optronics San Jos, CA
www.ssousa.com +1.408.293.4600
Page
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SDT400
rev 1.40 (10/25/2004)
4 PIN H
TYPE WITH 0.4" LEAD SPACING (SDT400-H)
4 PIN
SURFACE MOUNT DEVICE
(SDT400-
S
)
4 PIN
DUAL IN-LINE PACKAGE
(SDT400)
SDT400
DC Input
Optocoupler
Solid State Optronics (SSO) makes no warranties or representations with regards to the completeness and accuracy of this document. SSO
reserves the right to make changes to product description, specifications at any time without further notice.
SSO shall not assume any liability arising out of the application or use of any product or circuit described herein. Neither circuit patent
licenses nor indemnity are expressed or implied.
Except as specified in SSO's Standard Terms & Conditions, SSO disclaims liability for consequential or other damage, and we make no other
warranty, expressed or implied, including merchantability and fitness for particular use.
DISCLAIMER
LIFE SUPPORT POLICY
SSO does not authorize use of its devices in life support applications wherein failure or malfunction of a device may lead to personal injury or
death. Users of SSO devices in life support applications assume all risks of such use and agree to indemnify SSO against any and all
damages resulting from such use. Life support devices are defined as devices or systems which, (a) are intended for surgical implant into the
body, or (b) support or sustain life, and (c) whose failure to perform when used properly in accordance with instructions for use can be
reasonably expected to result in significant injury to the user, or (d) a critical component in any component of a life support device or system
whose failure can be reasonably expected to cause failure of the life support device or system, or to affect its safety or effectiveness.
2004 Solid State Optronics San Jos, CA
www.ssousa.com +1.408.293.4600
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6
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SDT400
rev 1.40 (10/25/2004)
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