Fairchild Phototransistor Optocouplers Data Handbook
Summary
These phototransistor optocouplers are essential components for providing robust electrical signal isolation in electronic systems. Available in multiple models, they feature a gallium arsenide infrared emitter driving a silicon phototransistor. This manual offers comprehensive deep-dive technical documentation, including absolute maximum ratings, detailed DC/AC transfer characteristics, and standardized soldering profiles. It is the definitive resource for electrical engineers and system designers utilizing these devices in applications such as power regulators, digital logic interfacing, and microprocessor inputs requiring reliable signal separation.
Page 1 Text Content
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PHOTOTRANSISTOR OPTOCOUPLERS
MCT2 MCT2E MCT210 MCT271 MCT2200 MCT2201 MCT2202
WHITE PACKAGE (-M SUFFIX) BLACK PACKAGE (NO -M SUFFIX)
DESCRIPTION The MCT2XXX series optoisolators consist of a gallium arsenide infrared emitting diode driving a silicon phototransistor in a 6-pin dual in-line package.
FEATURES UL recognized (File # E90700) VDE recognized (File # 94766) – Add option V for white package (e.g., MCT2V-M) – Add option 300 for black package (e.g., MCT2.300) MCT2 and MCT2E are also available in white package by specifying -M suffix, eg. MCT2-M
APPLICATIONS Power supply regulators Digital logic inputs Microprocessor inputs
SCHEMATIC
PIN 1. ANODE 2. CATHODE 3. NO CONNECTION 4. EMITTER 5. COLLECTOR 6. BASE
© 2005 Fairchild Semiconductor Corporation Page 1 of 15 6/15/05
Page Summary Contents For Fairchild Phototransistor Optocouplers Data Handbook
Manual Details
| Brand | Fairchild |
|---|---|
| Pages | 15 |
| File Size | 615.57 KB |
| Published | July 07, 2026 |
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Frequently Asked Questions
What is the difference between black and white packages?
Add option -M suffix for a white package (e.g., MCT2V-M); use option 300 for a black package (e.g., MCT2.300).
What are the absolute maximum operating temperature limits?
The Operating Temperature (OPR) range is all listed devices from -55 to +100 °C.
Can this component be used in life support systems?
No, Fairchild requires express written approval for its use as a critical component in life support devices or systems.
What are the recommended reflow profiles for potting?
For white package (-M suffix): Peak reflow temperature is 260°C. For black package (no suffix): Use 250-225°C peak.