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FODM121BR2
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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)：150% @ 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 FODM121BR2 is a single-channel phototransistor output optocoupler manufactured by onsemi. It provides electrical isolation with an insulation voltage of 3750 Vrms. The device features an NPN phototransistor output and operates within a temperature range of -40°C to 110°C. Key electrical parameters include a maximum collector-emitter voltage of 80 V, a maximum forward current of 50 mA, and a typical rise time of 3 µs. The unit is housed in a compact SMD-4 package.
Feature Summary
- Provides reliable signal transmission through optical isolation between input and output circuits
- Features a phototransistor output configuration for efficient switching applications
- Designed for surface mount installation to support automated assembly processes
Applications
- General-purpose signal isolation in industrial control systems
- Input/output interface isolation in microcontroller-based designs
- Power supply feedback loop isolation
Procurement Notes
Verify the specific suffix BR2 against the manufacturer's latest datasheet to confirm pinout compatibility and packaging details. Ensure that the required isolation voltage rating meets the safety standards of the target application. Cross-reference the component marking with official documentation to prevent counterfeit substitution during sourcing.
Selection Notes
Select this component when a single channel of high-voltage isolation is required in a small footprint. Consider the 3750 Vrms insulation rating for safety compliance. Evaluate the 3 µs rise time against the system's switching speed requirements. Confirm that the SMD-4 package dimensions fit the available PCB space constraints.
Part Context
This part belongs to the FODM121B series of transistor output optocouplers from onsemi. These devices are designed for general-purpose isolation tasks where moderate speed and high reliability are necessary. The series offers various package options to accommodate different board layout requirements while maintaining consistent electrical performance characteristics.
Replacement Considerations
Publicly confirmed substitute part numbers are not available in the provided source material. Verify functional equivalence with other single-channel transistor output optocouplers having similar isolation ratings and package types before substitution.
