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DPC357S-A-TR-V
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Product Detailed Parameters
- Description：OPTOISO 3.75KV 1CH TRANS 4-SOP
- Series：DPC357
- Mfr：Diodes Incorporated
- Package：Tape & Reel (TR)
- Number of Channels：1
- Voltage - Isolation：3750Vrms
- Current Transfer Ratio (Min)：80% @ 5mA
- Current Transfer Ratio (Max)：160% @ 5mA
- Turn On / Turn Off Time (Typ)：-
- Rise / Fall Time (Typ)：18µs, 18µs (Max)
- Input Type：DC
- Output Type：Transistor
- Voltage - Output (Max)：80V
- Current - Output / Channel：50mA
- Voltage - Forward (Vf) (Typ)：1.25V
- 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-SOP
- Grade：-
- Qualification：-
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Overview
The DPC357S-A-TR-V is a single-channel phototransistor output optocoupler manufactured by Diodes Incorporated. It features an infrared emitting diode coupled to an NPN phototransistor in a surface-mount SLM-4 package. The device provides electrical isolation with a rated insulation voltage of 3.75 kV. Key electrical characteristics include a forward voltage of approximately 1.25 V and a collector-emitter saturation voltage of 200 mV. The current transfer ratio (CTR) at a forward current of 5 mA ranges from 80% to 160%. It supports a maximum collector current of 30 mA and a collector-emitter voltage of 35 V.
Feature Summary
- Provides galvanic isolation between input and output circuits using an infrared LED and NPN phototransistor pair.
- Designed for surface-mount assembly in compact SLM-4 packages to facilitate automated PCB placement.
- Offers high current transfer efficiency within the specified CTR range for reliable signal transmission.
Applications
- Signal isolation in industrial control systems
- Interface circuits for microcontrollers and logic gates
- Power supply feedback loops
Procurement Notes
Verify the specific suffix 'A' corresponds to the required Current Transfer Ratio (CTR) bin, as variations exist within the DPC357S family. Confirm that the SLM-4 package dimensions match the target footprint. Ensure the 3.75 kV insulation rating meets the safety requirements of the end application. Check for RoHS compliance status through official manufacturer documentation before finalizing procurement.
Selection Notes
Select this component when a low-cost, single-channel isolation solution is needed for digital signals. The SLM-4 package offers a smaller footprint compared to standard DIP options. Consider the 80-160% CTR range for circuit design margins. Ensure the operating temperature range aligns with system constraints. Compare against other Diodes Incorporated variants if higher speed or different isolation voltages are required.
Part Context
This part belongs to the DPC357S series of optocouplers from Diodes Incorporated. The series includes various output types and packaging options. The 'A' suffix typically denotes a specific CTR binning category. The product line targets general-purpose isolation applications requiring cost-effective solutions. Other variants may offer different insulation ratings or package styles such as SOP-4.
Replacement Considerations
Direct replacements include DPC357S-X-TR-V and DPC357S-Y-TR-V, which share similar physical packages but differ in CTR specifications. Verify pinout compatibility and insulation voltage ratings when substituting. Ensure the replacement part meets the same thermal and electrical performance criteria.
