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Product Detailed Parameters
- Description：OPTOISOLTR 5.3KV 1CH TRANS 4-SMD
- Series：ISP817
- Mfr：Isocom Components 2004 LTD
- Package：Tube
- Number of Channels：1
- Voltage - Isolation：5300Vrms
- Current Transfer Ratio (Min)：50% @ 5mA
- Current Transfer Ratio (Max)：600% @ 5mA
- Turn On / Turn Off Time (Typ)：-
- Rise / Fall Time (Typ)：4µs, 3µs
- Input Type：DC
- Output Type：Transistor
- Voltage - Output (Max)：80V
- Current - Output / Channel：50mA
- Voltage - Forward (Vf) (Typ)：1.2V
- Current - DC Forward (If) (Max)：50 mA
- Vce Saturation (Max)：200mV
- Operating Temperature：-55°C ~ 110°C
- Mounting Type：Surface Mount
- Package / Case：4-SMD (0.300", 7.62mm)
- Supplier Device Package：4-SMD
- Grade：-
- Qualification：-
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Overview
The ISP817XDSM is a surface-mount, single-channel phototransistor optocoupler from Isocom Components. It features a 4-pin SMD-4 package with DC input and NPN phototransistor output. Key electrical parameters include a maximum forward voltage of 1.4V, a typical rise time of 4μs, and a typical fall time of 3μs. The device offers an isolation voltage of 5300Vrms and operates within a temperature range of -55°C to 125°C.
Feature Summary
- Provides high-density mounting via a compact surface-mount package design.
- Delivers robust signal isolation through a 5300Vrms dielectric barrier between input and output circuits.
- Features fast switching characteristics suitable for digital signal transmission applications.
Applications
- Industrial control systems requiring galvanic isolation
- Power supply feedback loops
- Signal isolation in communication interfaces
Procurement Notes
Verify the specific suffix 'DSM' against official datasheets to confirm the exact lead frame configuration and reel packaging specifications. Ensure the component meets required UL or VDE recognition standards for your target market. Cross-reference pinout diagrams to guarantee compatibility with existing PCB footprints before finalizing procurement orders.
Selection Notes
Select this component when a surface-mount solution is required for single-channel isolation with high speed. Compare the CTR and isolation voltage against alternatives if higher current transfer ratios are needed. Consider thermal dissipation limits within the small SMD-4 package during circuit design to ensure reliable operation under continuous load conditions.
Part Context
This part belongs to the ISP817 series of high-density phototransistor optocouplers manufactured by Isocom Components. The series is designed to replace standard DIP packages with equivalent performance in a smaller footprint. It utilizes infrared LED technology coupled with an NPN phototransistor for efficient optical signal transmission across isolated barriers.
Replacement Considerations
Direct substitutes may include other 4-pin SMD phototransistor optocouplers with matching 5300Vrms isolation and similar pin configurations. Verify that replacement parts maintain identical CTR ranges and switching speeds to ensure circuit functionality remains unchanged without redesigning surrounding components.
