Overview
The Sharp PC3H4AJ0000F is a single-channel photocoupler optoisolator engineered for high-reliability applications requiring galvanic isolation between input and output circuits. This component combines an AC-input infrared LED optically coupled to a phototransistor, delivering robust 2.5kV RMS isolation voltage in a compact 4-pin mini-flat SMD package. Designed to meet industrial and consumer-grade switching and signal isolation needs, the PC3H4AJ0000F excels in AC input sensing, power supply control, and fault detection circuits.
Key Features
- 2.5kV RMS input-to-output isolation voltage
- AC input type with single transistor output channel
- Compact 4-mini-flat (SO-4) SMD package for space-constrained applications
- 50mA maximum input current with 4mA maximum collector output
- Current Transfer Ratio (CTR) 20–400% at ±1mA input
- Operating temperature range –30°C to +100°C with 18µs rise/fall time
Technical Specifications
- Isolation Voltage (Viso RMS): 2.5kV
- Input Type: AC 50mA
- Output Type: Transistor (NPN phototransistor)
- Collector-to-Emitter Breakdown Voltage (VCEO): 80V
- Output Current Ic (Max): 4mA
- Output Current Ic (Min): 0.2mA
- Current Transfer Ratio (CTR): 20% to 400%
- Forward Voltage (Vf Max): 1.4V
- Rise / Fall Time: 18µs typical
- Operating Temperature: –30°C to +100°C
- Package Style: 4-pin mini-flat half-pitch (lead pitch 1.27mm)
- Dimensions: 4.4mm × 2mm × 2.6mm
- Power Dissipation: 170mW
- Packaging Format: Tape & Reel (TR), 2000 units per reel
- Approvals: UL Recognized, VDE
Typical Applications
The Sharp PC3H4AJ0000F is ideal for:
- AC-input photoelectric sensors and detector circuits
- Zero-crossing detection and phase-angle control in AC power switching
- Isolated gate-drive and PWM signal transmission to switching power supplies
- Fault signal isolation in industrial control and motor-drive systems
- Touch-panel and capacitive-sensing interfaces requiring galvanic isolation
- Medical and instrumentation equipment with high isolation requirements
Compatibility & Replacements
Compatible With
- AC-input optoisolator socket applications in industrial control systems
- PCB layouts designed for 4-pin SO-4 mini-flat package footprint
- Power supply feedback circuits and isolated signal conditioning
- Standard surface-mount assembly processes (reflow and wave soldering)
Replaces / Drop-In Replacement For
- Sharp PC3H4A (standard 2.5kV AC-input optoisolator)
- Legacy or obsolete single-channel 2.5kV photocoupler variants in SO-4 package
- Similar specifications: Verify footprint and lead pitch compatibility (1.27mm row pitch)
Works With
- Power supply design and feedback-control circuits
- Microcontroller and PLC isolated input modules
- Gate-drive optoisolator arrays in IGBT and MOSFET switching applications
- AC power-line monitoring and zero-crossing detection systems
- Standard surface-mount reflow soldering and wave-soldering processes
