📌 Product Overview
The International Rectifier XLCNY17-1 is a phototransistor output optocoupler featuring a gallium arsenide infrared LED and a silicon phototransistor. This component is engineered for high-voltage isolation between input and output circuits, making it essential for applications requiring electrical separation. Its primary design focus is on providing stable signal transmission in feedback loops, ensuring the safety and reliability of control systems in power supplies, industrial automation, and consumer electronics.
🔧 Typical Applications
- Switching power supply feedback control loops for voltage regulation and overload protection.
- Signal isolation in PLCs, motor drives, and sensor interfaces to prevent high-voltage noise interference.
- Isolation in serial communication interfaces like RS-232 to enhance anti-interference capability.
- Lighting control systems, including dimming, smart switching, and wireless control for AC input.
- Consumer electronics such as smart home devices, computers, and peripherals.
⚙️ Key Technical Specifications
| Parameter | Symbol | Test Condition | Value | Unit |
|---|---|---|---|---|
| Current Transfer Ratio | CTR | IF=10mA, VCE=10V | Min. 20 | % |
| Forward Voltage | VF | IF=10mA | Typ. 1.2 | V |
| Collector-Emitter Saturation Voltage | VCE(sat) | IF=50mA, IC=2mA | Max. 0.5 | V |
| Isolation Capacitance | Cf | V=0, f=1MHz | Typ. 1 | pF |
| Response Time (Rise/Fall) | Tr/Tf | VCE=10V, IC=2mA | Typ. 3 | µs |
🔒 Absolute Maximum Ratings & Process Limits
| Parameter | Symbol | Value | Unit |
|---|---|---|---|
| Forward Current | IF | 60 | mA |
| Forward Peak Current | IFP | 1 | A |
| Collector-Emitter Voltage | VCEO | 30 | V |
| Collector Power Dissipation | PC | 300 | mW |
| Isolation Voltage | VISO | 5000 | Vrms |
| Operating Temperature | TOPR | -55 to +100 | °C |
| Soldering Temperature | TSOL | 260 | °C |
📏 Package, Dimensions & Assembly Notes
The XLCNY17-1 is available in two package types: DIP6 (Dual Inline Package) and SMD6 (Surface Mount Device). Both packages use a UL 94V-0 rated molding compound for enhanced safety. Assembly requires careful attention to soldering profiles, with a recommended reflow peak temperature of 260°C for a maximum of 30 seconds or wave soldering at 260°C for 10 seconds to ensure reliability without damaging the component.
🚀 Sourcing & Supply Considerations
- Verify part numbers (XLCNY17-1 for DIP6, XLCNY17-1S for SMD6) to ensure correct packaging and quantity.
- Lead-free and halogen-free options are available, compliant with CQC, UL, and VDE standards.
- Authenticity can be confirmed by checking the unique marking code on each component.
- For high-volume production, confirm lead times with authorized distributors to manage supply chain risk.
❓ FAQ
Q: What does the "CTR" rating of 20% signify?
A: The Current Transfer Ratio (CTR) indicates the minimum efficiency of the optocoupler, stating that at least 20% of the input current (IF) will be transferred as output current (IC) under specified test conditions (IF=10mA, VCE=10V). This is a key parameter for feedback loop design.
Q: What is the difference between the DIP6 and SMD6 packages?
A: The DIP6 (Dual Inline Package) is through-hole, suitable for prototyping and certain industrial applications, while the SMD6 (Surface Mount Device) is designed for automated PCB assembly, enabling higher-density circuit boards.
Q: What is the maximum isolation voltage of this optocoupler?
A: The XLCNY17-1 provides a high isolation voltage of 5000Vrms, which is critical for protecting low-voltage control circuits from high-voltage transients in power and industrial applications.
Q: Is the XLCNY17-1 compliant with environmental and safety standards?
A: Yes, it is an environmentally friendly product compliant with CQC, UL, and VDE requirements, and uses a UL Flammability Classification Rating 94V-0 molding compound for fire safety.
