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Product Detailed Parameters
- Description：OPTOISOLATOR 5KV 1CH TRANS 4-SMD
- Series：SFH628A-2
- Mfr：Isocom Components 2004 LTD
- Package：Tape & Reel (TR)
- Number of Channels：1
- Voltage - Isolation：5000Vrms
- Current Transfer Ratio (Min)：63% @ 1mA
- Current Transfer Ratio (Max)：200% @ 1mA
- Turn On / Turn Off Time (Typ)：-
- Rise / Fall Time (Typ)：4µs, 3µs
- Input Type：AC, DC
- Output Type：Transistor
- Voltage - Output (Max)：55V
- Current - Output / Channel：50mA
- Voltage - Forward (Vf) (Typ)：1.5V (Max)
- Current - DC Forward (If) (Max)：50 mA
- Vce Saturation (Max)：400mV
- Operating Temperature：-30°C ~ 100°C
- Mounting Type：Surface Mount
- Package / Case：4-SMD, Gull Wing
- Supplier Device Package：4-SMD
- Grade：-
- Qualification：-
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Overview
The SFH628A-2SMT&R is a surface-mount AC input-transistor output optocoupler manufactured by Isocom Components. It features a single element with 5300V isolation voltage and operates within a temperature range of -55°C to 100°C. The device utilizes inverse parallel infrared LEDs and NPN silicon phototransistors, supporting a maximum forward current of 100mA and a nominal current transfer ratio of 10%. It is housed in a 6-pin plastic surface-mount package and complies with RoHS standards.
Feature Summary
- AC input capability via inverse parallel infrared LED configuration
- High isolation voltage rating for safety-critical applications
- Surface-mount packaging for automated assembly integration
Applications
- Switch-mode power supply feedback loops
- Solid-state relay driver circuits
- Microcontroller interface isolation
Procurement Notes
Verify the specific suffix 'R' indicates reel packaging if required for SMD placement equipment. Confirm RoHS compliance status matches project environmental regulations. Ensure the 6-pin SOP package footprint aligns with PCB design constraints. Validate that the 5300Vrms isolation rating meets system safety standards such as UL or IEC requirements for the intended application environment.
Selection Notes
Select this component when AC line sensing is required without external rectification. The inverse parallel LED structure simplifies circuit design for AC inputs. Consider the 10% minimum CTR for low-drive applications. Verify thermal dissipation capabilities within the 0.3W power limit. Ensure the surface-mount form factor fits the available board space compared to through-hole alternatives.
Part Context
This part belongs to the SFH628A series of optically coupled isolators. The series combines infrared emitters with NPN phototransistors for signal transmission across isolation barriers. The SMT variant offers compact sizing suitable for modern electronics manufacturing. It serves as a direct replacement for similar AC-input optocouplers in industrial and consumer power systems.
Replacement Considerations
Check pinout compatibility with existing designs. Verify equivalent isolation voltage and CTR specifications. Ensure package dimensions match the current footprint. Confirm lead-free status aligns with regulatory requirements.
