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FODM121F
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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 FODM121F is a high-speed optocoupler featuring an AlGaAs LED coupled to a high-speed integrated logic gate output. It operates with a propagation delay of typically 300 ns and offers a common-mode transient immunity of 15 kV/µs minimum. The device supports a data rate up to 1 Mbps and functions within a supply voltage range of 4.5 V to 5.5 V. It utilizes a standard 6-pin DIP package, providing electrical isolation between input and output circuits while maintaining signal integrity for digital communication applications.
Feature Summary
- High-speed operation with low propagation delay for efficient digital signal transmission
- Robust common-mode transient immunity ensuring reliable performance in noisy environments
- Integrated logic gate output simplifies interface design with microprocessors and logic circuits
Applications
- Digital isolation in industrial control systems
- Signal coupling between microprocessors and peripheral devices
- Isolation barriers in data communication interfaces
Procurement Notes
Verify the specific suffix 'F' indicates tape and reel packaging when ordering. Confirm the datasheet revision matches the required specifications for propagation delay and isolation voltage. Ensure compatibility with existing PCB footprint standards for 6-pin DIP packages during integration planning.
Selection Notes
Select this component when high-speed digital isolation is required alongside robust noise immunity. Consider the 1 Mbps data rate limit and 5 V logic compatibility. Evaluate the need for through-hole mounting versus surface-mount alternatives if space constraints exist in the final assembly design.
Part Context
This part belongs to onsemi's family of high-speed optocouplers designed for digital isolation. It complements other models offering varying speed or isolation levels. The FODM121F specifically targets applications requiring fast response times and reliable signal transfer across isolated boundaries in electronic systems.
Replacement Considerations
Check for direct pin-compatible substitutes from onsemi such as the FODM2121 series for similar performance characteristics. Verify that alternative components meet the same 15 kV/µs common-mode transient immunity requirement and 1 Mbps data rate specification.
