SDT400
DC Input
Optocoupler
DESCRIPTION
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.
FEATURES
APPLICATIONS
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High input-to-output isolation package (5000 Vrms)
Low input power consumption
High stability
Miniature 4 pin DIP package
CTR Range 50-600%
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Registers, copiers, Automatic Vending Machines
System appliances, measuring instruments
Computer terminals, PLCs
Telecommunications, telephones
Home Appliances
Digital logic inputs
Microprocessor inputs
Switching power supply
OPTIONS/SUFFIXES*
ABSOLUTE MAXIMUM RATINGS*
PARAMETER
Storage Temperature
Operating Temperature
Input Forward Current
Input Peak Forward
Current
Reverse Input Control
Voltage
UNIT
ºC
ºC
mA
A
V
mW
MIN
-55
-40
TYP
MAX
125
100
50
1
6
200
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-H
-S
-TR
.04" (10.16mm) lead spacing (VDE0884)
Surface Mount Option
Tape and Reel Option
NOTE: Suffixes listed above are not included in marking on
device for part number identification.
SCHEMATIC DIAGRAM
1
+ Input
4
Collector
Total Power Dissipation
2
- Input
3
Emitter
*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.
APPROVALS
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UL and C-UL Approved, File #E201932
VDE Approved, Lic # 40011227
© 2004 Solid State Optronics • San José, CA
www.ssousa.com • +1.408.293.4600
Page 1 of
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SDT400
rev 1.40 (10/25/2004)
SSOUSA [ SOLID STATE OPTRONIC ]
