FAIRCHILD SEMICONDUCTOR FOD814 Series, FOD617 Series, FOD817 Series 4-_pin High Operating Temperature Phototransistor Optocouplers
Summary
These high-performance phototransistor optocouplers are designed for demanding applications requiring superior electrical signal isolation, such as AC line monitoring, digital logic interfacing, and power supply regulation. Built with robust materials, they maintain performance at elevated operating temperatures while guaranteeing up to 5000Vrms input-output isolation. This document provides comprehensive technical specifications, including detailed transfer characteristics, absolute maximum ratings, and response times, making it an essential resource for hardware engineers designing reliable industrial or microprocessor control systems.
Page 1 Text Content
814 S eries, F 617 S eries, F 817 S eries 4-P in ig eratin Tem eratu re P to tran sisto r O to co lers
May 2006
FOD814 Series, FOD617 Series, FOD817 Series
4-Pin High Operating Temperature Phototransistor Optocouplers Features Description AC input response (FOD814 only) The FOD814 consists of two gallium arsenide infrared
Applicable to Pb-free IR reflow soldering emitting diodes, connected in inverse parallel, driving a silicon phototransistor output in a 4-pin dual in-line
Compact 4-pin package
package. The FOD617/817 Series consists of a gallium
Current transfer ratio in selected groups:
arsenide infrared emitting diode driving a silicon
FOD617A: 40–80% FOD817: 50–600%
phototransistor in a 4-pin dual in-line package.
FOD617B: 63–125% FOD817A:80–160% FOD617C:100–200% FOD817B: 130–260% FOD617D:160–320% FOD817C:200–400% FOD814: 20–300% FOD817D:300–600% FOD814A: 50–150% C-UL, UL and VDE approved High input-output isolation voltage of 5000Vrms Minimum BV of 70V guaranteed
Higher operating temperatures (versus H11AXXX counterparts)
Applications FOD814 Series AC line monitor Unknown polarity DC sensor Telephone line interface FOD617 and FOD817 Series Power supply regulators Digital logic inputs Microprocessor inputs
Functional Block Diagram
1ANODE, CATHODE COLLECTOR
COLLECTORANODE
3CATHODE, ANODE EMITTER
CATHODE EMITTER
FOD814 FOD617/817
©2006 Fairchild Semiconductor Corporation www.fairchildsemi.com FOD814 Series, FOD617 Series, FOD817 Series Rev. 1.0.5
Page Summary Contents For FAIRCHILD SEMICONDUCTOR FOD814 Series, FOD617 Series, FOD817 Series 4-_pin High Operating Temperature Phototransistor Optocouplers
Manual Details
| Brand | Fairchild |
|---|---|
| Pages | 12 |
| File Size | 579.34 KB |
| Published | May 19, 2026 |
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Frequently Asked Questions
What is the high input-output isolation voltage offered by these optocouplers?
The devices feature a high input-output isolation voltage of 5000Vrms.
What are the maximum operating temperature ratings for this product family?
The FOD617/817 series have an operational temperature range of -55 to +110°C, while the FOD814 supports -55 to +105°C.
Are these optocouplers compatible with modern soldering standards?
Yes, they are applicable in Pb-free IR reflow soldering silicon phototransistor output in a 4-pin dual in-line package.
What distinct applications are suitable for the FOD814 series?
The FOD814 can be used for AC line monitoring, unknown polarity DC sensing, and telephone line interface applications.