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Product Detailed Parameters
- Description：OPTOISO 5.3KV DARL W/BASE 6-SMD
- Series：4N31
- Mfr：Isocom Components 2004 LTD
- Package：Tape & Reel (TR)
- Number of Channels：1
- Voltage - Isolation：5300Vrms
- Current Transfer Ratio (Min)：-
- Current Transfer Ratio (Max)：-
- Turn On / Turn Off Time (Typ)：5µs, 40µs (Max)
- Rise / Fall Time (Typ)：-
- Input Type：DC
- Output Type：Darlington with Base
- Voltage - Output (Max)：30V
- Current - Output / Channel：5mA
- Voltage - Forward (Vf) (Typ)：1.2V
- Current - DC Forward (If) (Max)：80 mA
- Vce Saturation (Max)：1.2V
- Operating Temperature：-55°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 4N31SMT&R is a surface-mount optocoupler manufactured by Isocom Components 2004 LTD. It features one channel with a Darlington transistor output and includes a base connection for improved switching speed. The device provides an isolation voltage of 5.3 kVrms and supports a maximum forward current of 80 mA. It is housed in a 6-pin SMD package.
Feature Summary
- Integrates a Darlington phototransistor output stage to provide high current transfer ratios
- Includes a dedicated base terminal on the phototransistor to facilitate faster turn-off times
- Offers robust electrical isolation capability rated at 5.3 kVrms between input and output circuits
Applications
- Industrial control systems requiring signal isolation
- Power supply feedback loops
- Solid-state relay driver circuits
Procurement Notes
Verify that the specific suffix 'R' corresponds to the required tape-and-reel packaging format, as standard bulk or tube variations may exist under different suffixes. Confirm RoHS compliance status and SVHC declarations against the latest manufacturer documentation before finalizing procurement orders.
Selection Notes
Select this component when a high-current Darlington output is necessary alongside rapid switching performance. The integrated base pin allows for external discharge control, making it suitable for applications where standard phototransistor turn-off delays are insufficient. Ensure the 6-pin surface mount footprint fits the design constraints.
Part Context
This part belongs to the 4N31 series family, which utilizes a Darlington configuration within a single-channel optocoupler architecture. It serves as a surface-mount alternative to through-hole DIP variants, maintaining similar electrical characteristics while adapting to automated assembly processes for modern electronic manufacturing.
Replacement Considerations
Cross-reference with other 6-pin surface-mount Darlington optocouplers offering comparable 5.3 kVrms isolation and base-connected outputs. Verify pinout compatibility and thermal dissipation requirements before substituting with equivalent parts from other manufacturers.
