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FOD785ASD
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Product Detailed Parameters
- Description：OPTOISO 5KV 1CH TRANS 4-PDIP-GW
- Series：-
- Mfr：onsemi
- Package：Tape & Reel (TR),Cut Tape (CT)
- Number of Channels：1
- Voltage - Isolation：5000Vrms
- Current Transfer Ratio (Min)：80% @ 5mA
- Current Transfer Ratio (Max)：160% @ 5mA
- Turn On / Turn Off Time (Typ)：-
- Rise / Fall Time (Typ)：18µs, 18µs (Max)
- Input Type：DC
- Output Type：Transistor
- Voltage - Output (Max)：80V
- 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：Surface Mount
- Package / Case：4-SMD, Gull Wing
- Supplier Device Package：4-PDIP-GW
- Grade：-
- Qualification：-
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Overview
The FOD785ASD is a single-channel transistor output optocoupler manufactured by onsemi. It features an NPN phototransistor output with a maximum collector-emitter voltage of 80 V and a continuous collector current of 50 mA. The device provides 5000 Vrms isolation voltage and operates within a temperature range of -55°C to +110°C. Key electrical parameters include a forward current of 50 mA, a forward voltage of 1.4 V, and a reverse voltage rating of 6 V. The current transfer ratio ranges from 80% to 160%, with typical rise and fall times of 18 µs. Power dissipation is rated at 100 mW.
Feature Summary
- Provides high-voltage electrical isolation between input and output circuits
- Utilizes an NPN phototransistor for digital signal transmission
- Designed for surface-mount installation in compact applications
Applications
- General-purpose digital signal isolation
- Microcontroller interface circuits
- Industrial control systems requiring galvanic isolation
Procurement Notes
Verify the specific suffix 'SD' against the official datasheet to confirm package type and tape-and-reel specifications. Ensure the procurement source provides valid RoHS compliance documentation. Cross-reference the manufacturer part number with authorized distributor catalogs to confirm authenticity and traceability before finalizing orders.
Selection Notes
Select this component when a single-channel transistor output optocoupler with 5000 Vrms isolation is required. Consider the 80 V collector-emitter voltage limit and 50 mA current capacity for load compatibility. Evaluate the 18 µs switching speed against system timing requirements. Confirm that the surface-mount package format aligns with the printed circuit board design constraints.
Part Context
This component belongs to the FOD785 series of transistor output optocouplers from onsemi. The series is designed for general-purpose isolation applications. The FOD785ASD variant specifically denotes the surface-mount packaging configuration. It shares core electrical characteristics with other members of the family while differing in physical form factor.
Replacement Considerations
Consult official substitution guides for compatible alternatives. Verify pinout compatibility and electrical parameter equivalence for any cross-referenced parts.
