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FOD817D
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Product Detailed Parameters
- Description：OPTOISOLATOR 5KV 1CH TRANS 4-DIP
- Series：-
- Mfr：onsemi
- Package：Tube
- Number of Channels：1
- Voltage - Isolation：5000Vrms
- Current Transfer Ratio (Min)：300% @ 5mA
- Current Transfer Ratio (Max)：600% @ 5mA
- Turn On / Turn Off Time (Typ)：-
- Rise / Fall Time (Typ)：4µs, 3µs
- Input Type：DC
- Output Type：Transistor
- Voltage - Output (Max)：70V
- Current - Output / Channel：50mA
- Voltage - Forward (Vf) (Typ)：1.2V
- Current - DC Forward (If) (Max)：50 mA
- Vce Saturation (Max)：200mV
- Operating Temperature：-55°C ~ 110°C
- Mounting Type：Through Hole
- Package / Case：4-DIP (0.300", 7.62mm)
- Supplier Device Package：4-DIP
- Grade：-
- Qualification：-
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Overview
The FOD817D is a single-channel transistor output optocoupler from onsemi, featuring a gallium arsenide infrared emitting diode coupled to a silicon phototransistor. It utilizes a 4-pin MDIP package for through-hole mounting. Key electrical parameters include a 5000Vrms isolation voltage, a maximum collector-emitter voltage of 70V, and a peak forward current of 50mA. The device operates within a temperature range of -55°C to +110°C. Typical rise and fall times are specified at 18μs, with a minimum current transfer ratio of 300%.
Feature Summary
- Provides high-voltage electrical isolation between input and output circuits via an infrared LED and phototransistor pair.
- Offers robust signal transmission in industrial environments with wide operating temperature capabilities.
- Features standard pinout compatibility for direct replacement in existing designs.
Applications
- Industrial process control systems requiring galvanic isolation
- Power supply feedback loops for voltage regulation
- Signal interfacing between microcontrollers and high-voltage loads
Procurement Notes
Verify the specific suffix against official datasheets to confirm package type and certification requirements. Ensure the procurement channel provides valid manufacturer traceability documentation. Confirm that the received components match the specified 4-pin DIP configuration and meet the required isolation voltage standards for the intended application safety ratings.
Selection Notes
Select this component when a standard NPN phototransistor output is required for general-purpose isolation. Consider the 5000Vrms isolation rating for safety compliance. Evaluate the 18μs switching speed against system timing requirements. Verify that the 4-DIP package fits the available PCB footprint and assembly constraints compared to surface-mount alternatives.
Part Context
The FOD817D belongs to the FOD817 series, which includes various variants differing by packaging and certification. This specific part number denotes the through-hole DIP version. The series is widely used in legacy and modern designs for basic digital signal isolation. Other variants may offer different current transfer ratios or surface-mount packages.
Replacement Considerations
Compatible substitutes include the FOD817A, FOD817B, and FOD817C, which share the same pinout and basic electrical characteristics but may differ in current transfer ratio ranges. Surface-mount equivalents such as the FOD817D3SD offer identical functionality in an SMD-4 package. Verify isolation voltage and thermal specifications when cross-referencing.
