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FODM121BR2
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Product Detailed Parameters
- Description：OPTOISO 3.75KV 1CH TRANS 4-MFP
- Series：-
- Mfr：Fairchild Semiconductor
- Package：Bulk
- 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-MFP
- Grade：-
- Qualification：-
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Overview
The FODM121BR2 is a single-channel transistor output optocoupler housed in a 4-pin Mini-Flat Package (MFP). It features a DC input configuration with a phototransistor output. Key electrical parameters include a minimum isolation voltage of 3750 Vrms, a collector-emitter breakdown voltage of 80 V, and a maximum forward current of 50 mA. The device operates within a temperature range of -40°C to 100°C or 110°C depending on specific variant ratings, with a nominal Current Transfer Ratio of 150%.
Feature Summary
- Provides high-voltage isolation between input and output circuits
- Compact surface-mount package design for space-constrained applications
- Compatible with standard digital logic and microprocessor interfaces
Applications
- Digital logic inputs
- Microprocessor inputs
- Power supply monitor circuits
- Twisted pair line receivers
- Telephone line receivers
Procurement Notes
Verify the specific suffix BR2 indicates reel packaging when sourcing. Confirm the manufacturer origin, as Fairchild Semiconductor assets were acquired by onsemi. Ensure the component meets required environmental standards such as RoHS compliance before integration into final assemblies.
Selection Notes
Select this component for applications requiring galvanic isolation in compact form factors. The transistor output type suits general-purpose switching and signal transmission tasks. Evaluate thermal dissipation requirements against the specified operating temperature limits during system design.
Part Context
This part belongs to the FODM121 series of transistor output optocouplers. It shares the same physical footprint and basic functionality with related models like the FODM121EV. The series is designed to replace older through-hole components with modern surface-mount solutions while maintaining similar electrical performance characteristics.
Replacement Considerations
Direct substitutes include other parts from the FODM121 series. Verify pinout compatibility and insulation voltage ratings when considering alternative manufacturers' equivalents.
