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Product Detailed Parameters
- Description：OPTOISO 4.17KV TRANS W/BASE 6SMD
- Series：-
- Mfr：onsemi
- Package：Tube
- Number of Channels：1
- Voltage - Isolation：4170Vrms
- Current Transfer Ratio (Min)：20% @ 10mA
- Current Transfer Ratio (Max)：-
- Turn On / Turn Off Time (Typ)：2µs, 2µs
- Rise / Fall Time (Typ)：-
- Input Type：DC
- Output Type：Transistor with Base
- Voltage - Output (Max)：30V
- Current - Output / Channel：-
- Voltage - Forward (Vf) (Typ)：1.18V
- Current - DC Forward (If) (Max)：60 mA
- Vce Saturation (Max)：500mV
- Operating Temperature：-40°C ~ 100°C
- Mounting Type：Surface Mount
- Package / Case：6-SMD, Gull Wing
- Supplier Device Package：6-SMD
- Grade：-
- Qualification：-
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Overview
The onsemi 4N26SM is a single-channel phototransistor output optocoupler designed for signal isolation. It features an infrared emitting diode coupled to an NPN phototransistor within a surface-mount SMD-DIP-6 package. Key electrical specifications include a maximum collector-emitter voltage of 30 V, a forward voltage of 1.5 V, and a power dissipation rating of 250 mW. The device provides high insulation voltage of 5300 Vrms between input and output circuits. Operating temperatures range from -55°C to +100°C, ensuring reliability in various industrial environments.
Feature Summary
- Provides galvanic isolation between control and load circuits via optical coupling
- Integrates an infrared LED emitter with an NPN phototransistor for efficient signal transfer
- Utilizes a compact SMD-DIP-6 package suitable for automated surface-mount assembly
Applications
- Industrial automation control systems requiring circuit isolation
- Solid-state relay interfaces for switching applications
- Microcontroller input/output isolation in embedded systems
Procurement Notes
Verify the specific suffix 'SM' confirms the surface-mount SMD-DIP-6 packaging variant distinct from through-hole versions. Confirm current product status as distribution availability may be limited or subject to change. Ensure the selected component meets the required insulation voltage and operating temperature range for the target application environment before finalizing procurement.
Selection Notes
Select this component when surface-mount integration is required for single-channel isolation applications. Compare the 5300 Vrms insulation rating against system safety requirements. Evaluate the 250 mW power dissipation limit relative to thermal management constraints. Consider the 30 V collector-emitter voltage capability to ensure compatibility with downstream logic or transistor loads.
Part Context
The 4N26SM belongs to the broader family of phototransistor output optocouplers manufactured by onsemi. This series is widely utilized for providing electrical isolation in digital communication and power control circuits. The SM designation specifically identifies the surface-mount configuration, differentiating it from traditional leaded packages while maintaining similar functional characteristics within the manufacturer's portfolio.
Replacement Considerations
Cross-reference with other single-channel phototransistor optocouplers offering comparable 5300 Vrms isolation and SMD-DIP-6 footprints. Verify pinout compatibility and electrical parameters such as current transfer ratio and saturation voltage before substitution.
