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Product Detailed Parameters
- Description：OPTOISO 4.17KV TRANS W/BASE 6SMD
- Series：-
- Mfr：onsemi
- Package：Tape & Reel (TR),Cut Tape (CT)
- Number of Channels：1
- Voltage - Isolation：4170Vrms
- Current Transfer Ratio (Min)：10% @ 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 4N27SR2M is a single-channel surface-mount transistor output optocoupler featuring an NPN phototransistor with base terminal. It provides electrical isolation between input and output circuits using a gallium arsenide infrared LED. Key electrical parameters include a maximum collector-emitter voltage of 30 V, a forward current rating of 100 mA, and a power dissipation of 250 mW to 270 mW depending on specific revision. The device operates within a temperature range of -55°C to +100°C and offers high isolation voltage capabilities.
Feature Summary
- Integrates a silicon phototransistor with a dedicated base terminal for improved switching performance and storage time control.
- Provides robust galvanic isolation between input and output sections to protect sensitive circuitry from voltage spikes.
- Designed for surface-mount assembly in compact SMD-DIP-6 packages to facilitate automated PCB manufacturing.
Applications
- General-purpose signal isolation in industrial control systems
- Switching power supply feedback loops
- Microcontroller interface circuits requiring electrical separation
Procurement Notes
Verify the specific suffix and revision level against the manufacturer's latest datasheet before procurement. Confirm that the component meets all required insulation and safety certifications for the target application environment. Ensure compatibility with surface-mount reflow soldering profiles specified in the official documentation.
Selection Notes
Select this component when a surface-mount solution is required for general-purpose isolation with a phototransistor output. Consider the base terminal feature if faster turn-off times or higher noise immunity are needed compared to standard variants. Verify package dimensions and thermal characteristics against the design constraints.
Part Context
This part belongs to the 4N27 family of optocouplers, which are widely used for basic isolation tasks. The SR2M suffix indicates a specific surface-mount packaging variant manufactured by onsemi. It serves as a modern replacement for through-hole DIP versions in space-constrained designs while maintaining similar electrical functionality.
Replacement Considerations
The 4N27SD is listed as a related product but may differ in packaging or specific electrical ratings. Verify pinout compatibility and isolation voltage specifications before substituting. Cross-reference with the manufacturer's obsolescence notices for alternative recommendations.
