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XLH11A2-G Phototransistor: Industrial Control Board Integration Guide

LED Technology · 2026-03-23

XLH11A2-G Phototransistor: Industrial Control Board Integration Guide

📌 Product Overview

The XLH11A2-G is a phototransistor optimized for industrial control boards. It targets applications such as power supplies, meters, communication equipment, UPS systems, and solar inverters. Its design focus is on stable optical switching and signal isolation in harsh industrial environments, ensuring reliable performance for long-term operation.

💡 Typical Applications

  • Power supply feedback and regulation
  • Energy metering systems
  • Communication device signal isolation
  • UPS (Uninterruptible Power Supply) control circuits
  • Solar inverter monitoring and protection

🔧 Key Technical Specifications

ParameterSymbolRatingUnit
Collector-Emitter VoltageVCEO30V
Collector CurrentIC50mA
Total Power DissipationPT100mW
Collector Dark CurrentIC(off)100nA

🔒 Absolute Maximum Ratings & Process Limits

ParameterSymbolRatingUnit
Collector-Base VoltageVCBO70V
Emitter-Base VoltageVEBO5V
Operating TemperatureTopr-40 to +85°C
Storage TemperatureTstg-40 to +125°C

📏 Package, Dimensions & Assembly Notes

The XLH11A2-G comes in a standard 4-pin DIP (Dual In-line Package) with a compact footprint. Key dimensions include 5.1mm (length) × 4.3mm (width) × 2.3mm (height). Recommended soldering temperature is 260°C for 10 seconds maximum, ensuring reliable SMT or through-hole assembly without damaging the internal structure.

🚀 Sourcing & Supply Considerations

  • Sample Support: Available for prototyping and evaluation.
  • Mass Production Lead Time: 4-6 weeks for standard volumes.
  • Cross-Reference: Compatible with industry-standard phototransistors.
  • Channel Verification: Ensure procurement from authorized distributors to avoid counterfeit risks.

❓ FAQ

Q: What is the typical response time for the XLH11A2-G?
A: The rise/fall time is typically 2µs/5µs, suitable for medium-speed industrial control applications.

Q: Is this phototransistor RoHS compliant?
A: Yes, the XLH11A2-G meets RoHS standards for environmental safety.

Q: Can it replace other phototransistors in existing designs?
A: Direct replacement depends on pinout and electrical compatibility. Verify VCEO, IC, and switching speed requirements.

Q: What are the storage conditions to prevent degradation?
A: Store in a dry environment at 5°C to 30°C, with humidity below 60% RH.

Q: Is automotive-grade version available?
A: Standard XLH11A2-G is for industrial use; automotive variants may require separate AEC-Q102 certification.

Q: How to minimize dark current in low-light applications?
A: Use shielding and ensure proper PCB layout to reduce ambient light interference.

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