📌 Product Overview
The XL-ITR20403 from XINGLIGHT is a transmissive photointerrupter integrating a 940nm Gallium Arsenide infrared emitter and a silicon NPN phototransistor detector. This component is engineered to provide non-contact object detection with high reliability and fast response switching speeds. 💡 It is specifically designed for applications requiring precise positional sensing and discrete signal generation in compact electronic assemblies.
Target applications primarily include office automation and gaming devices, such as fax machines, scanners, and slot machines. The design focus for this model emphasizes low power consumption and high radiant intensity, ensuring sufficient signal output while maintaining compatibility with standard low-voltage drive circuits. 🔒 Its construction supports automated assembly processes, making it suitable for high-volume production environments.
🎯 Typical Applications
Based on its technical specifications, particularly the 940nm peak wavelength and fast rise/fall times, the XL-ITR20403 is optimized for the following scenarios:
- Gaming and Amusement: 🎰 Critical for coin detection mechanisms in slot machines where precision and longevity are required to withstand frequent actuation.
- Office Automation: Used in fax machines and scanners to detect paper presence, document end, and home positioning for print heads.
- Consumer Electronics: 💡 Integration into small home appliances for safety interlocks or door closure detection (e.g., microwave ovens).
- Industrial Automation: Deployment in automatic sensors for limit switching or non-contact safety relays in light machinery.
📊 Key Technical Specifications
| Parameter | Symbol | Test Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| Forward Voltage | $V_F$ | $I_F$ = 20mA | - | 1.2 | 1.5 | V |
| Peak Wavelength | $\lambda_p$ | $I_F$ = 20mA | - | 940 | - | nm |
| Collector Current | $I_{C(on)}$ | $V_{CE}$ = 5V, $I_F$ = 20mA | 0.2 | - | 5.0 | mA |
| Rise Time | $t_r$ | $V_{CE}$ = 5V, $R_L$ = 1kΩ | - | 15 | - | μs |
| Fall Time | $t_f$ | $V_{CE}$ = 5V, $R_L$ = 1kΩ | - | 15 | - | μs |
| Saturation Voltage | $V_{CE(sat)}$ | $I_C$ = 2mA | - | - | 0.4 | V |
| Dark Current | $I_{CEO}$ | $V_{CE}$ = 20V | - | 1 | 100 | nA |
💡 Note: Voltage grading codes (R2-4) and Current Transfer Ratio (CTR) codes (IC9-24) are available for tighter binning requirements.
⚠️ Absolute Maximum Ratings & Process Limits
Exceeding these ratings may cause permanent damage to the device. Stress beyond these limits for extended periods affects reliability.
| Parameter | Symbol | Ratings | Unit |
|---|---|---|---|
| Input Emitter | |||
| Power Dissipation | $P_D$ | 75 | mW |
| Continuous Forward Current | $I_F$ | 50 | mA |
| Peak Forward Current | $I_F$ | 1 | A |
| Reverse Voltage | $V_R$ | 5 | V |
| Output Detector | |||
| Power Dissipation | $P_D$ | 75 | mW |
| Collector-Emitter Voltage | $V_{CEO}$ | 30 | V |
| Collector Current | $I_C$ | 20 | mA |
| Thermal & Mechanical | |||
| Operating Temperature | $T_{opr}$ | -20 to +85 | ℃ |
| Storage Temperature | $T_{stg}$ | -40 to +85 | ℃ |
| Lead Soldering Temp | $T_{sol}$ | 260 | ℃ |
🔒 Critical Process Limit: Soldering must be completed within 5 seconds at 260°C, maintaining a distance of at least 2mm from the epoxy body to prevent degradation.
📦 Package, Dimensions & Assembly Notes
- Package Type: The XL-ITR20403 features a standard transmissive slot-in housing.
- Dimensions: 📏 Unit is in millimeters (mm). Standard tolerance is ±0.3mm unless otherwise noted.
- Assembly Guidelines:
- Moisture Sensitivity: The component is classified as MSL 2. Floor life is < 1 year. If the moisture barrier bag is exceeded, baking is required before reflow to prevent popcorning.
- Soldering: 🚀 Use a low-temperature soldering profile to protect the internal optical alignment. Ensure the slot is free from flux residue after wave soldering to prevent blocking the optical path.
📈 Sourcing & Supply Considerations
When sourcing the XL-ITR20403 for new designs or BOM optimization, consider the following supply chain factors:
- Grade Selection: Verify the voltage grading (R2-4) and CTR binning (IC9-24) matches your circuit design thresholds.
- Authenticity: 🔒 Procure through authorized channels to ensure RoHS compliance and MSL 2 integrity.
- Sample Evaluation: Request samples for optical characterization if integrating into new slot machine or sensor platforms.
- Lead Time: Check availability for high-volume demands to prevent production bottlenecks.
❓ FAQ
Q: What is the detection wavelength of the XL-ITR20403?
A: The sensor operates at a peak wavelength of 940nm (Infrared), making it ideal for applications where visible light interference needs to be minimized.
Q: Can the XL-ITR20403 withstand lead-free soldering processes?
A: Yes, the absolute maximum rating for lead soldering temperature is 260°C. However, the duration should be strictly limited to 5 seconds, and the iron must be kept 2mm away from the device body.
Q: What is the response speed of this sensor?
A: The typical rise and fall times ($t_r / t_f$) are both 15μs under standard test conditions ($V_{CE}=5V, R_L=1k\Omega$).
Q: What does "MSL 2" mean for storage?
A: MSL (Moisture Sensitivity Level) 2 means the components can be exposed to the factory floor for up to 1 year (at <30°C/60% RH) before soldering without requiring a pre-bake.
Q: Is this component RoHS compliant?
A: Yes, the XL-ITR20403 is manufactured using lead-free materials and is fully RoHS compliant.
