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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)：63% @ 1mA
- Current Transfer Ratio (Max)：200% @ 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
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Overview
The SFH6943A-2T is a quad-channel optoisolator manufactured by Vishay Semiconductor Opto Division. It features transistor outputs and provides an isolation voltage of 1768Vrms. The device is housed in a compact 10-SMD SOT-223 package, designed for high-voltage isolation applications requiring multiple independent signal channels within a single component.
Feature Summary
- Quad-channel configuration for independent signal isolation
- Transistor output type for digital switching applications
- High isolation voltage rating of 1768Vrms
- Compact surface-mount SOT-223-10 packaging
Applications
- Industrial control systems requiring multi-channel isolation
- Power supply feedback loops
- Communication interface isolation
- Microcontroller input/output protection
Procurement Notes
Verify the specific suffix -2T against official Vishay documentation to confirm tape-and-reel packaging specifications. Ensure the ordering part number matches the exact isolation voltage and channel count requirements. Cross-reference the datasheet revision date to confirm compliance with current RoHS standards and material declarations before finalizing procurement orders.
Selection Notes
Select this component when multiple isolated channels are required in a space-constrained design. The SOT-223-10 package offers a balance between pin count and board area. Consider the transistor output speed and collector-emitter voltage ratings relative to the load requirements. Verify that the 1768Vrms isolation level meets the safety standards of the target application environment.
Part Context
This part belongs to Vishay's family of quad-channel optocouplers. It shares the same physical footprint and basic functionality as other variants in the SFH6943 series, differing primarily in packaging format or specific electrical tolerances defined by the suffix. It serves as a direct replacement for legacy quad-channel isolators in similar form factors.
Replacement Considerations
Direct substitutes include other Vishay quad-channel optocouplers with matching 10-SMD packages. Verify that alternative parts maintain the 1768Vrms isolation rating and transistor output characteristics. Check for pin-to-pin compatibility if replacing in existing PCB layouts without redesigning traces.
