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Product Detailed Parameters
- Description：OPTOISO 3.75KV DARL 4-MINI-FLAT
- Series：-
- Mfr：Sharp Microelectronics
- Package：Tape & Reel (TR),Cut Tape (CT)
- Number of Channels：1
- Voltage - Isolation：3750Vrms
- Current Transfer Ratio (Min)：600% @ 1mA
- Current Transfer Ratio (Max)：-
- Turn On / Turn Off Time (Typ)：-
- Rise / Fall Time (Typ)：60µs, 53µs
- Input Type：DC
- Output Type：Darlington
- Voltage - Output (Max)：35V
- Current - Output / Channel：80mA
- Voltage - Forward (Vf) (Typ)：1.2V
- Current - DC Forward (If) (Max)：50 mA
- Vce Saturation (Max)：1V
- Operating Temperature：-30°C ~ 100°C
- Mounting Type：Surface Mount
- Package / Case：4-SMD, Gull Wing
- Supplier Device Package：4-Mini-Flat
- Grade：-
- Qualification：-
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Overview
The PC355N is a single-channel transistor output photocoupler manufactured by Sharp Microelectronics. It features a Darlington phototransistor output and utilizes a Mini-flat package for surface mount installation. The device provides an isolation voltage of 3750 Vrms. Key electrical parameters include a maximum collector-emitter voltage of 35 V, a maximum forward current of 50 mA, and a typical forward voltage of 1.2 V to 1.4 V. The minimum current transfer ratio is 600%. Typical switching times are 60 µs for rise time and 53 µs for fall time. The operating temperature range extends from -30°C to +100°C.
Feature Summary
- Integrates a high-gain Darlington phototransistor output stage for enhanced signal transmission capability.
- Provides robust electrical isolation with a rated insulation voltage of 3750 Vrms between input and output circuits.
- Utilizes a compact Mini-flat surface mount package design suitable for space-constrained applications.
Applications
- Industrial control systems requiring galvanic isolation
- Signal transmission in measurement and testing equipment
- Interface circuits for microprocessor-based logic systems
Procurement Notes
Verify component authenticity through authorized distribution channels due to the presence of obsolete status indicators in some market listings. Confirm RoHS compliance details as specifications may vary by production batch. Ensure the specific suffix matches the required packaging format. Cross-reference datasheet revisions to confirm parameter consistency before integration into final designs.
Selection Notes
Select this component when high current transfer ratio is required for driving loads directly without additional amplification. The Darlington configuration offers superior sensitivity compared to standard phototransistor outputs. Consider the 35 V collector-emitter voltage limit for low-voltage switching applications. Evaluate the thermal performance within the specified -30°C to +100°C operating range for environmental suitability.
Part Context
This component belongs to Sharp's PC355 series of optocouplers, which are designed for general-purpose isolation tasks. The series includes variants with different current transfer ratios and output types. The PC355N specifically denotes the standard Darlington output version in the Mini-flat package. It serves as a legacy solution for isolation requirements where high gain is prioritized over switching speed.
Replacement Considerations
Public documentation indicates the PC355N is obsolete. Potential substitutes include the PC355NJ0000F or PC354N1J000F. Verify pin compatibility and electrical parameter alignment, particularly the current transfer ratio and isolation voltage, before substitution.
