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Product Detailed Parameters
- Description：OPTOISOLATOR 5KV 1CH TRANS 4-SMD
- Series：-
- Mfr：Sharp Microelectronics
- Package：Tube
- Number of Channels：1
- Voltage - Isolation：5000Vrms
- Current Transfer Ratio (Min)：-
- Current Transfer Ratio (Max)：-
- Turn On / Turn Off Time (Typ)：-
- Rise / Fall Time (Typ)：4µs, 5µs
- Input Type：DC
- Output Type：Transistor
- Voltage - Output (Max)：350V
- Current - Output / Channel：50mA
- Voltage - Forward (Vf) (Typ)：1.2V
- Current - DC Forward (If) (Max)：50 mA
- Vce Saturation (Max)：300mV
- Operating Temperature：-25°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 PC851XI is a transistor output optoisolator manufactured by Sharp Microelectronics. It features a 4-SMD gull wing package and provides electrical isolation with a 5kV rating between input and output circuits. The device utilizes a photovoltaic output configuration, designed for signal transmission across isolated boundaries in electronic systems.
Feature Summary
- Provides high-voltage electrical isolation between input and output circuits
- Utilizes a compact surface-mount 4-SMD gull wing package design
- Employs a transistor output configuration for signal switching applications
Applications
- General purpose signal isolation in industrial control systems
- Microcontroller interface circuits requiring galvanic separation
- Power supply feedback loops for voltage regulation
Procurement Notes
Verify the exact part marking against the official Sharp Microelectronics datasheet to confirm the PC851XI designation. Ensure the package type matches the required 4-SMD gull wing form factor. Check for any specific ordering suffixes that may indicate tape-and-reel packaging versus bulk quantities, as these affect handling procedures.
Selection Notes
Select this component when a low-cost, general-purpose optoisolator with moderate isolation voltage is required. Consider the CTR (Current Transfer Ratio) specifications if precise gain is needed. Verify that the 5kV isolation rating meets the safety standards of the target application environment.
Part Context
This component belongs to Sharp's family of transistor output optocouplers. These devices are commonly used where simple on/off signaling or analog signal transmission across isolated domains is necessary. The PC851XI variant specifically denotes the standard through-hole or surface-mount compatible version within this product line.
Replacement Considerations
Consult official Sharp Microelectronics documentation for direct cross-reference data. Generic replacements must match the pinout, isolation voltage, and package dimensions. Verify compatibility with existing circuit biasing conditions before substitution.
