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Product Detailed Parameters
- Description：OPTOISO 1.768KV 4CH TRANS 10-SMD
- Series：-
- Mfr：Vishay Semiconductor Opto Division
- Package：Tape & Reel (TR)
- Number of Channels：4
- Voltage - Isolation：1768Vrms
- Current Transfer Ratio (Min)：100% @ 1mA
- Current Transfer Ratio (Max)：320% @ 1mA
- Turn On / Turn Off Time (Typ)：2.6µs, 2.8µs
- Rise / Fall Time (Typ)：3µs, 3.1µs
- Input Type：DC
- Output Type：Transistor
- Voltage - Output (Max)：70V
- Current - Output / Channel：10mA
- Voltage - Forward (Vf) (Typ)：1.25V
- Current - DC Forward (If) (Max)：3 mA
- Vce Saturation (Max)：-
- Operating Temperature：-55°C ~ 100°C
- Mounting Type：Surface Mount
- Package / Case：SOT-223-10
- Supplier Device Package：10-SMD
Download product information
Overview
The SFH6943A-3T is a quad-channel mini-optocoupler from Vishay, designed for high-density PCB applications. It features four independent phototransistor outputs within a single SOT-223-10 package. Key electrical parameters include a maximum DC forward current of 3 mA and a typical output current of 10 mA per channel. The device operates with a typical forward voltage of 1.25 V and supports an operating temperature range from -55°C to 100°C.
Feature Summary
- Integrates four isolated channels in a compact surface-mount package
- Suitable for high-density printed circuit board layouts
- Provides galvanic isolation between input and output circuits
Applications
- High-density digital signal isolation
- Multi-channel data transmission interfaces
- Industrial control system isolation
Procurement Notes
Verify the specific suffix '3T' corresponds to the required tape-and-reel packaging configuration. Confirm that the SOT-223-10 footprint matches the target PCB design constraints. Ensure the supplier provides documentation confirming compliance with RoHS standards as indicated in public listings.
Selection Notes
Select this component when multiple isolated channels are required in a limited space. The quad-channel architecture reduces board area compared to discrete single-channel units. Verify that the 3 mA forward current limit meets the driving circuit capabilities and that the 10 mA output current suffices for the load requirements.
Part Context
This part belongs to the SFH series of optocouplers by Vishay Semiconductor Opto Division. It utilizes phototransistor technology for signal transmission. The SOT-223-10 package distinguishes it from standard DIP or smaller SMD variants, offering a balance between pin count and thermal performance for multi-channel designs.
Replacement Considerations
Publicly confirmed substitute part numbers are not available in the provided source material. Engineers should consult official Vishay documentation for direct replacements or evaluate similar quad-channel optocouplers based on package and electrical parameter compatibility.
