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FODM121FV
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Product Detailed Parameters
- Description：OPTOISO 3.75KV 1CH TRANS 4-SMD
- Series：-
- Mfr：onsemi
- Package：Box
- Number of Channels：1
- Voltage - Isolation：3750Vrms
- Current Transfer Ratio (Min)：50% @ 5mA
- Current Transfer Ratio (Max)：600% @ 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
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Overview
The FODM121FV is a single-channel transistor output optocoupler manufactured by onsemi. It provides electrical isolation with a rated voltage of 3750Vrms. The device features an NPN phototransistor output capable of handling a maximum collector-emitter voltage of 80V and a collector current of 80mA. Key electrical parameters include a typical rise and fall time of 3µs, a forward voltage of 1.3V (maximum), and a DC forward current limit of 50mA. The collector-emitter saturation voltage is specified at a maximum of 400mV. It operates within a temperature range of -40°C to 110°C and is housed in a 4-SMD surface-mount package.
Feature Summary
- Provides high-voltage electrical isolation between input and output circuits
- Utilizes infrared LED and phototransistor for signal transmission
- Designed for digital logic transmission and impedance transformation
Applications
- Digital logic signal transmission and level shifting
- Power supply control and switching circuits
- Electrical insulation between circuit stages or systems
Procurement Notes
Verify the specific suffix 'FV' against official datasheets to confirm tape-and-reel packaging requirements. Ensure compatibility with surface-mount assembly processes. Confirm RoHS compliance status through manufacturer documentation prior to procurement.
Selection Notes
Select this component when high isolation voltage is required for low-speed digital signals. Consider the 80mA output current capability and 3µs switching speed for application timing constraints. Verify that the 4-SMD package fits the available PCB footprint.
Part Context
This part belongs to the FODM121 series of transistor output optocouplers from onsemi. It is functionally similar to variants like FODM121A and FODM121V, differing primarily in packaging configuration. The series is designed for general-purpose isolation applications requiring robust performance.
Replacement Considerations
Check for direct pin-compatible substitutes such as FODM121A or FODM121V if packaging differences are acceptable. Verify that replacement parts meet the same 3750Vrms isolation and 80mA output current specifications.
