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Product Detailed Parameters
- Description：OPTOISO 3.75KV 1CH TRANS 6-MFSOP
- Series：-
- Mfr：Toshiba Semiconductor and Storage
- Package：Tape & Reel (TR)
- 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)：3µs, 3µs
- Rise / Fall Time (Typ)：2µs, 3µs
- Input Type：DC
- Output Type：Transistor
- Voltage - Output (Max)：80V
- Current - Output / Channel：50mA
- Voltage - Forward (Vf) (Typ)：1.15V
- Current - DC Forward (If) (Max)：50 mA
- Vce Saturation (Max)：400mV
- Operating Temperature：-55°C ~ 100°C
- Mounting Type：Surface Mount
- Package / Case：6-SMD (4 Leads), Gull Wing
- Supplier Device Package：6-MFSOP, 4 Lead
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Overview
The TLP121(GRL,F) is a single-channel transistor output optocoupler manufactured by Toshiba Semiconductor and Storage. It integrates a gallium arsenide infrared emitting diode with a phototransistor in a compact plastic DIP-4 package. The device provides electrical isolation between input and output circuits. Key electrical parameters include a minimum collector-emitter breakdown voltage of 80 V, a maximum forward current of 50 mA, and a maximum insulation voltage of 3750 Vrms. The GRL rank specifies a minimum current transfer ratio of 200%. The component operates within a temperature range of -25 °C to 85 °C.
Feature Summary
- Integrates a GaAs infrared LED with a phototransistor for signal transmission
- Provides high-voltage electrical isolation via an internal insulating barrier
- Features a small outline plastic DIP-4 package suitable for surface mount assembly
Applications
- AC/DC input modules for programmable controllers
- Office machines such as copiers and printers
- Telecommunication equipment signal interfaces
Procurement Notes
Verify the specific suffix (GRL,F) to confirm the Current Transfer Ratio rank and lead-free status. Confirm that the tin/lead terminal finish meets project requirements if RoHS compliance is mandatory. Check datasheet revisions for updates on insulation voltage ratings and UL recognition file numbers before finalizing design-in.
Selection Notes
Select this component when a low-cost, general-purpose transistor output optocoupler is required for digital signal isolation. The GRL rank offers higher current transfer ratio consistency compared to standard ranks. Ensure the load voltage does not exceed the 80 V collector-emitter breakdown rating and that the input current remains within the 50 mA maximum limit.
Part Context
This part belongs to the TLP121 series of mini flat couplers designed for surface mount applications. The series is widely used in industrial and consumer electronics for isolating control signals from power circuits. Variants differ primarily in CTR ranking and packaging suffixes indicating reel type or environmental compliance.
Replacement Considerations
TLP121(GB,F) and TLP121(F) are direct functional equivalents within the same series, differing mainly in CTR ranking. Verify pinout compatibility and package dimensions when substituting.
