XL-C4040PDC is a side-view infrared receiver (phototransistor) in 4040 package (4.0×4.0×3.5 mm) with clear encapsulation. Featuring a side-mount design with the light-sensitive surface oriented laterally, it is suitable for SMT automated production and reflow soldering processes.
This NPN phototransistor has a peak sensitivity wavelength of 940 nm and a spectral response range of 730–1000 nm, providing excellent matching with most infrared emitters (e.g., 940 nm type). RoHS compliant with moisture sensitivity level MSL 3, it is ideal for non-visible light detection applications including light barriers, photoelectric switches, smoke detection and infrared sensing.
Optical Characteristics
Peak Sensitivity Wavelength (λp): 940 nm
Spectral Response Range (Δλ): 730–1000 nm (covers mainstream infrared bands)
Collector Photocurrent (ICE): 300–600 μA (typical, VCE=5 V, Ee=1 mW/cm²)
Photocurrent Binning: Available in 0.3–0.6 mA bins for consistent mass production
Side-view package with lateral light-receiving surface, ideal for space-constrained side-sensing designs
Electrical Parameters (Ta=25℃)
Collector-Emitter Breakdown Voltage (BVCEO): ≥30 V (IC=100 μA, dark condition)
Emitter-Collector Breakdown Voltage (BVECO): ≥1.2 V (IE=100 μA, dark condition)
Collector Dark Current (ICEO): ≤100 nA (VCE=5 V, dark condition; low dark current ensures high signal-to-noise ratio)
Collector-Emitter Saturation Voltage (VCE(sat)): ≤6.5 V (IC=2 mA, Ee=1 mW/cm²)
Environmental & Reliability Specifications
Operating Temperature: -35℃ ~ +85℃
Storage Temperature: -40℃ ~ +85℃
Soldering Conditions: Reflow soldering at 260℃ for ≤6 s; manual soldering at 300℃ for ≤3 s
Passed reliability tests including 1000-hour operating life, high-temperature high-humidity and temperature cycling (see datasheet page 7 for details)
Additional Features
Standard EIA tape-and-reel packaging for high-speed SMT assembly
Moisture-proof and anti-static sealed packaging; recommended to be used within 7 days after opening
Complete application notes and soldering guidelines provided
Smart Devices & Home Appliances: Iris recognition, smart door locks, proximity sensing
Light Barriers / Optical Interrupters: Object detection, position sensing, counting
Floppy Disk Drives: Disk rotation detection, write-protect sensing
Photoelectric Switches: Industrial automation, security detection
Smoke Detectors: Photoelectric smoke alarms
Infrared Sensors: PIR sensor complement, infrared communication
Sensor Switches: Automatic faucets, automatic doors, intelligent lighting
