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Product Detailed Parameters
- Description：OPTOISO 4.17KV DARL W/BASE 6-SMD
- Series：-
- Mfr：onsemi
- Package：Tape & Reel (TR),Cut Tape (CT)
- Number of Channels：1
- Voltage - Isolation：4170Vrms
- Current Transfer Ratio (Min)：500% @ 10mA
- Current Transfer Ratio (Max)：-
- Turn On / Turn Off Time (Typ)：5µs, 100µs (Max)
- Rise / Fall Time (Typ)：-
- Input Type：DC
- Output Type：Darlington with Base
- Voltage - Output (Max)：30V
- Current - Output / Channel：150mA
- Voltage - Forward (Vf) (Typ)：1.2V
- Current - DC Forward (If) (Max)：80 mA
- Vce Saturation (Max)：1V
- 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 4N32SR2M is a surface-mount transistor output optocoupler featuring a single channel with a Darlington phototransistor output. It provides high isolation voltage of 4170 Vrms and operates within a temperature range of -40°C to +100°C. The device accepts DC input with a maximum forward current of 80 mA and a typical forward voltage of 1.5 V. Key electrical parameters include a collector-emitter saturation voltage of 1 V, reverse voltage of 3 V, and power dissipation of 270 mW. It utilizes a 6-pin SMD package.
Feature Summary
- Integrates an infrared emitting diode with a high-gain Darlington phototransistor for enhanced signal transfer.
- Provides robust electrical isolation between input and output circuits via a 4170 Vrms dielectric barrier.
- Designed for surface-mount assembly using a compact 6-lead plastic dual in-line package.
Applications
- Industrial control systems requiring galvanic isolation
- Signal interfacing between microcontrollers and high-voltage loads
- Power supply feedback loops
Procurement Notes
Verify the specific suffix SR2M confirms the tape-and-reel packaging format required for automated surface-mount assembly processes. Ensure the component meets RoHS compliance standards if applicable to your manufacturing environment. Cross-reference the manufacturer part number against official distributor catalogs to confirm availability and lead times prior to finalizing procurement orders.
Selection Notes
Select this component when high current transfer ratio is necessary due to the Darlington output configuration compared to standard phototransistors. Consider the surface-mount footprint constraints and the specific isolation voltage requirements of the application circuit. Evaluate thermal management needs given the 270 mW power dissipation rating in enclosed environments.
Part Context
This device belongs to the 4N32 series of optocouplers, which are widely used for general-purpose isolation tasks. The 4N32SR2M variant specifically adapts the traditional through-hole design into a surface-mount form factor, maintaining similar electrical characteristics while enabling modern PCB assembly techniques.
Replacement Considerations
Direct replacements may include other 4N32 series variants such as the 4N32SM or 4N32M, provided they match the surface-mount package and pinout configuration. Verify that substitute components offer equivalent isolation voltage and current transfer ratio specifications.
