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Product Detailed Parameters
- Description：OPTOISOLATOR TRANS
- Series：*
- Mfr：Toshiba Semiconductor and Storage
- Package：Tube
- Number of Channels：-
- Voltage - Isolation：-
- Current Transfer Ratio (Min)：-
- Current Transfer Ratio (Max)：-
- Turn On / Turn Off Time (Typ)：-
- Rise / Fall Time (Typ)：-
- Input Type：-
- Output Type：-
- Voltage - Output (Max)：-
- Current - Output / Channel：-
- Voltage - Forward (Vf) (Typ)：-
- Current - DC Forward (If) (Max)：-
- Vce Saturation (Max)：-
- Operating Temperature：-
- Mounting Type：-
- Package / Case：-
- Supplier Device Package：-
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Overview
The 4N35(SHORT-LF1,F) is a single-channel transistor output optocoupler manufactured by Toshiba Semiconductor and Storage. It integrates an infrared emitting diode with an NPN silicon phototransistor in a compact 6-pin DIP package. The device provides electrical isolation between input and output circuits, rated at 2500 Vrms insulation voltage. Key electrical characteristics include a minimum collector-emitter breakdown voltage of 30 V and a maximum forward current of 60 mA. The unit supports a wide operating temperature range from -55 °C to +100 °C and features a nominal current transfer ratio of 100%.
Feature Summary
- Provides high-voltage electrical isolation between input and output circuits
- Integrates an infrared LED with an NPN phototransistor for signal transmission
- Offers reliable performance across a wide industrial temperature range
Applications
- Signal isolation in microprocessor systems
- Solid-state relay driver circuits
- Switching power supply feedback loops
Procurement Notes
Verify the specific suffix SHORT-LF1,F against official Toshiba documentation to confirm pin configuration and lead-free compliance status. Ensure the ordering code matches the exact package variant required for your PCB layout. Cross-reference the manufacturer's latest datasheet to validate RoHS directives and UL recognition numbers before finalizing procurement specifications.
Selection Notes
Select this component when a standard transistor-output optocoupler is required for general-purpose isolation applications. Consider the 30 V collector-emitter breakdown voltage limit for low-voltage switching tasks. Evaluate the thermal management requirements given the 100 °C maximum junction temperature rating. Confirm that the 6-pin DIP footprint aligns with existing board designs or manufacturing capabilities.
Part Context
This part belongs to the widely used 4N35 family of optocouplers, which are industry-standard components for basic isolation needs. Toshiba offers various packaging and suffix variations within this series to accommodate different mounting styles and regulatory requirements. The SHORT-LF1,F designation indicates a specific lead configuration and environmental compliance status within the broader product line.
Replacement Considerations
Publicly confirmed substitute part numbers for this specific Toshiba variant are not available in the provided reference data. Verify compatibility with generic 4N35 equivalents only if their electrical parameters meet or exceed the original specifications.
