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FODM121CR4V
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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)：100% @ 5mA
- Current Transfer Ratio (Max)：200% @ 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 FODM121CR4V is a single-channel transistor output optocoupler manufactured by onsemi. It features an NPN phototransistor output and operates within a temperature range of -40°C to +100°C. Key electrical parameters include a maximum collector-emitter voltage of 80 V, a maximum collector current of 80 mA, and a forward current of 50 mA. The device provides an isolation voltage of 3750 Vrms and has a typical current transfer ratio of 200%. It is housed in a 4-pin Mini-Flat (SMD-4) package with full pitch leads.
Feature Summary
- Provides high-voltage electrical isolation between input and output circuits
- Utilizes an NPN phototransistor for digital signal transmission
- Designed for surface-mount assembly in compact applications
Applications
- General-purpose digital signal isolation
- Microcontroller interface circuits
- Power supply feedback loops
Procurement Notes
Verify the specific suffix CR4V corresponds to the required tape-and-reel packaging configuration. Confirm that the component meets all relevant safety certification requirements for your target market. Ensure compatibility with standard surface-mount reflow soldering profiles during integration.
Selection Notes
Select this component when a single-channel transistor output isolator is required with a 3750 Vrms isolation rating. Consider the 80 V collector-emitter voltage limit for load switching applications. Verify that the Mini-Flat package dimensions fit the available PCB real estate constraints.
Part Context
This part belongs to the HMA121/FODM121 family of transistor output optocouplers from onsemi. These devices are designed for general-purpose isolation tasks where cost-effective, reliable signal transfer across isolated boundaries is necessary. The family typically offers consistent performance characteristics across various packaging options.
Replacement Considerations
The FODM121A is a related variant within the same product family offering similar electrical specifications. Verify pinout compatibility and insulation clearance requirements before substituting.
