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Product Detailed Parameters
- Description：OPTOISOLATOR 5KV 1CH TRANS 4-SMD
- Series：Q817
- Mfr：QT Brightek (QTB)
- Package：Tape & Reel (TR),Cut Tape (CT)
- Number of Channels：1
- Voltage - Isolation：5000Vrms
- Current Transfer Ratio (Min)：130% @ 5mA
- Current Transfer Ratio (Max)：260% @ 5mA
- Turn On / Turn Off Time (Typ)：-
- Rise / Fall Time (Typ)：6µs, 8µs
- Input Type：DC
- Output Type：Transistor
- Voltage - Output (Max)：35V
- Current - Output / Channel：50mA
- Voltage - Forward (Vf) (Typ)：1.24V
- Current - DC Forward (If) (Max)：60 mA
- Vce Saturation (Max)：200mV
- Operating Temperature：-55°C ~ 110°C
- Mounting Type：Surface Mount
- Package / Case：4-SMD, Gull Wing
- Supplier Device Package：4-SMD
- Grade：-
- Qualification：-
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Overview
The Q817BST1 is a single-channel optocoupler manufactured by QT Brightek, featuring a DC input and transistor output configuration. It utilizes a surface-mount package with four pins in a SMD DIP format. The device provides high isolation voltage of 5000Vrms between the input and output circuits. It operates within a temperature range of -55°C to 110°C. The typical forward voltage is 1.24V, with a maximum collector-emitter saturation voltage of 200mV.
Feature Summary
- High isolation voltage capability between input and output circuits
- Surface mount packaging for automated assembly compatibility
- Wide operating temperature range suitable for industrial environments
Applications
- Signal isolation in digital communication interfaces
- Switching control circuits requiring galvanic isolation
- Microcontroller interface protection
Procurement Notes
Verify the specific suffix 'BST1' against the manufacturer's official datasheet to confirm the exact pinout and reel specifications. Ensure the component meets required isolation standards for your application. Cross-reference the part number with authorized distributors to avoid counterfeit components. Confirm RoHS compliance status if mandated by your project requirements.
Selection Notes
Select this component when high isolation voltage is critical for safety or noise immunity. The transistor output type is suitable for switching applications rather than linear signal transmission. Consider the surface mount form factor for space-constrained PCB designs. Evaluate the thermal performance within the specified operating temperature range.
Part Context
This part belongs to the Q817 series of optocouplers from QT Brightek. These devices are designed for general-purpose isolation tasks. The series typically includes various package options and output types. The Q817BST1 specifically denotes the surface mount variant with transistor output.
Replacement Considerations
Check for direct substitutes such as Q817CST1 which shares similar electrical characteristics but may differ in package details. Verify pin compatibility before substitution. Consult manufacturer cross-reference lists for approved alternatives.
