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Product Detailed Parameters
- Description：OPTOISO 1.5KV TRANS W/BASE 6-DIP
- Series：4N2X
- Mfr：Lite-On Inc.
- Package：Tube
- Number of Channels：1
- Voltage - Isolation：1500Vrms
- Current Transfer Ratio (Min)：20% @ 10mA
- Current Transfer Ratio (Max)：-
- Turn On / Turn Off Time (Typ)：-
- Rise / Fall Time (Typ)：3µs, 3µs
- Input Type：DC
- Output Type：Transistor with Base
- Voltage - Output (Max)：30V
- Current - Output / Channel：100mA
- Voltage - Forward (Vf) (Typ)：1.2V
- Current - DC Forward (If) (Max)：80 mA
- Vce Saturation (Max)：500mV
- Operating Temperature：-55°C ~ 100°C
- Mounting Type：Through Hole
- Package / Case：6-DIP (0.300", 7.62mm)
- Supplier Device Package：6-DIP
- Grade：-
- Qualification：-
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Overview
The Lite-On Inc. 4N26 is a single-channel transistor output optocoupler featuring an infrared LED and silicon NPN phototransistor with base terminal. It provides electrical isolation with a maximum insulation voltage of 1500 Vrms and a collector-emitter breakdown voltage of 30 V. The device supports a nominal current transfer ratio of 100% at 10 mA forward current, with a maximum forward current of 80 mA. Operating temperature ranges from -55 °C to +100 °C, housed in a standard 6-pin DIP package.
Feature Summary
- Integrates a gallium arsenide infrared LED coupled with a silicon NPN phototransistor for signal transmission
- Provides high-voltage isolation between input and output circuits
- Includes a dedicated base terminal on the phototransistor for improved switching speed control
Applications
- I/O interfaces for computers
- Signal transmission between circuits of different potentials
- System appliances and measuring instruments
Procurement Notes
Verify that the specific ordering suffix matches the required insulation voltage rating and compliance standards. Confirm lead times and availability directly with authorized distributors, as stock levels vary by region. Ensure the component meets the necessary UL recognition requirements for your specific application safety standards.
Selection Notes
Select this component when a low-cost, general-purpose optoisolator with a base terminal is required. Consider the 1500 Vrms isolation limit and 30 V collector-emitter voltage constraints. Evaluate the 3 µs rise/fall time against system speed requirements compared to faster logic output alternatives.
Part Context
The 4N26 belongs to the industry-standard 4N2X series of phototransistor couplers, which includes variants like the 4N25, 4N27, and 4N28. These devices share similar physical dimensions and pinouts, facilitating drop-in replacements in existing designs while offering variations in current transfer ratio and switching characteristics.
Replacement Considerations
Direct substitutes include the Toshiba 4N26(LF2) and generic equivalents from manufacturers such as Everlight or onsemi (e.g., PC123 series). Verify that replacement parts maintain the same DIP-6 package and electrical parameters.
