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Product Detailed Parameters
- Description:OPTOISO 3.75KV 1CH TRANS 4-SMD
- Series:-
- Mfr:onsemi
- Package:Tape & Reel (TR),Cut Tape (CT)
- Number of Channels:1
- Voltage - Isolation:3750Vrms
- Current Transfer Ratio (Min):50% @ 5mA
- Current Transfer Ratio (Max):600% @ 5mA
- Turn On / Turn Off Time (Typ):-
- Rise / Fall Time (Typ):3µs, 3µs
- Input Type:DC
- Output Type:Transistor
- Voltage - Output (Max):80V
- Current - Output / Channel:80mA
- Voltage - Forward (Vf) (Typ):1.3V (Max)
- Current - DC Forward (If) (Max):50 mA
- Vce Saturation (Max):400mV
- Operating Temperature:-40°C ~ 110°C
- Mounting Type:Surface Mount
- Package / Case:4-SMD, Gull Wing
- Supplier Device Package:4-SMD
- Grade:-
- Qualification:-
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Overview
The FODM121R2 is a single-channel phototransistor output optocoupler manufactured by onsemi. It features a DC input type and utilizes a surface-mount 4-SMD,鸥翼 (gull-wing) package. The device provides an isolation voltage of 3750Vrms. Key electrical parameters include a maximum collector-emitter voltage of 80V and a peak output current of 80mA per channel. The typical rise and fall times are both 3µs. The operating temperature range spans from -40°C to 110°C. The component is RoHS compliant and has a moisture sensitivity level of 1.
Feature Summary
- Provides high-voltage electrical isolation between input and output circuits using phototransistor technology.
- Designed for surface-mount assembly in compact electronic applications.
- Capable of handling DC input signals with standard phototransistor output characteristics.
Applications
- General-purpose signal isolation in industrial control systems
- Interface circuits for microcontrollers and logic devices
- Power supply feedback loops requiring galvanic isolation
Procurement Notes
Verify the specific suffix 'R2' corresponds to the reel packaging configuration when ordering. Confirm that the 4-SMD gull-wing package matches the PCB footprint requirements. Ensure the 3750Vrms isolation rating meets the safety standards of the target application environment. Check for any recent product change notices regarding assembly or material declarations.
Selection Notes
Select this component when a single-channel transistor output is required for cost-effective isolation. Consider the 3µs switching speed for moderate-speed digital signal transmission. Evaluate the 80V output voltage limit against the load requirements. Compare against other onsemi FODM121 variants if different packaging or specific current transfer ratios are needed.
Part Context
This part belongs to the FODM121 family of phototransistor optocouplers from onsemi. It shares functional similarities with parts like the FODM121AR2V but differs in packaging and specific parameter tolerances. The series is designed for general-purpose isolation applications where space constraints favor surface-mount technologies.
Replacement Considerations
Public confirmed substitute part numbers: FODM121A, FODM121AR2V.
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