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FODM124
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Product Detailed Parameters
- Description：OPTOISO 3.75KV 1CH TRANS 4-SMD
- Series：-
- Mfr：onsemi
- Package：Tube
- Number of Channels：1
- Voltage - Isolation：3750Vrms
- Current Transfer Ratio (Min)：100% @ 1mA
- Current Transfer Ratio (Max)：1200% @ 1mA
- 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 FODM124 is a single-channel transistor output optocoupler manufactured by onsemi. It integrates a gallium arsenide infrared emitting diode with an NPN phototransistor in a surface-mount SMD-4 package. 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 device offers a minimum current transfer ratio of 100% and features an isolation voltage of 3750 Vrms. It operates within a temperature range of -40°C to +110°C.
Feature Summary
- Integrates a gallium arsenide infrared LED with an NPN phototransistor for signal transmission
- Provides high-voltage isolation capability suitable for safety-critical circuits
- Designed for surface-mount assembly in compact four-pin configurations
Applications
- General-purpose signal isolation in industrial control systems
- Interface between microcontrollers and power switching stages
- Isolation barriers in measurement and sensing equipment
Procurement Notes
Verify the specific ordering suffix against official datasheets to confirm package type and tape-and-reel specifications. Ensure compliance with RoHS directives as indicated in manufacturer documentation. Confirm lead pitch requirements match PCB layout constraints before finalizing procurement orders.
Selection Notes
Select this component when a single-channel phototransistor output is required with high isolation voltage ratings. Consider the 80 V collector-emitter voltage limit and 50 mA forward current constraints for circuit design. Evaluate the 100% minimum current transfer ratio for logic level compatibility in low-power applications.
Part Context
The FODM124 belongs to onsemi's family of transistor output optocouplers. It serves as a standard solution for galvanic isolation where moderate speed and high reliability are prioritized. The device complements other variants in the series that may offer different output types or packaging options.
Replacement Considerations
Cross-reference with FODM121AV for similar phototransistor output characteristics. Verify pinout compatibility and electrical parameter overlaps before substituting. Consult official substitution guides for confirmed equivalent part numbers.
