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FODM121CR2V
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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 FODM121CR2V is a single-channel transistor output optocoupler manufactured by onsemi. It features an NPN phototransistor output and an MFP input configuration housed in a compact SMD-4 package. The device provides an isolation voltage of 3750 Vrms, ensuring robust signal transmission across isolated circuits. Key electrical parameters include a maximum collector-emitter voltage of 80 V, a maximum collector current of 80 mA, and a forward current rating of 50 mA. The typical rise time is 3 µs, with a current transfer ratio ranging from 100% to 200%. Operating temperatures span from -40°C to 110°C.
Feature Summary
- Provides high-voltage isolation between input and output circuits for noise immunity
- Utilizes a compact surface-mount package suitable for space-constrained designs
- Features fast switching characteristics with a typical rise time of 3 microseconds
Applications
- Industrial control systems requiring galvanic isolation
- Power supply feedback loops for voltage regulation
- Signal transmission in noisy electromagnetic environments
Procurement Notes
Verify the specific suffix CR2V against official datasheets to confirm packaging and reel specifications. Ensure compatibility with RoHS directives if required by the target market. Cross-reference the manufacturer part number with authorized distributors to avoid counterfeit components. Confirm that the 4-SMD footprint matches the PCB design constraints before finalizing procurement orders.
Selection Notes
Select this component when a single-channel isolation barrier is needed with moderate speed requirements. The NPN phototransistor output is suitable for interfacing with digital logic inputs. Consider the 3750 Vrms isolation rating for safety compliance in mains-connected applications. Evaluate the thermal performance within the specified operating temperature range during system integration.
Part Context
This component belongs to the FODM121 family of optocouplers from onsemi. It shares functional similarities with variants like the FODM121A but differs in packaging and specific ordering suffixes. The family is designed for general-purpose isolation tasks in industrial and consumer electronics. Understanding the distinction between MFP and standard SMD packages is critical for proper board layout and assembly processes.
Replacement Considerations
The FODM121A is a related variant within the same product family. Verify pinout compatibility and package dimensions before substitution. Ensure that any replacement meets the same isolation voltage and current transfer ratio specifications.
