📌 Product Overview
The XL-PT928-6C is a silicon NPN phototransistor tailored for infrared light sensing and signal transmission. 💡 Encapsulated in a transparent epoxy colloid with compact 4.6x4.5x2.5mm dimensions, it offers high energy efficiency and rapid startup times. Designed strictly for OEM integration, this component is particularly effective in applications requiring precise response to 940nm wavelengths.
Target Applications: This device is engineered for medical equipment (endoscopes, oximeters), industrial control (counters, smart meters), and consumer robotics. Its primary design focus is ensuring reliable signal reception in environments where space constraints and thermal stability are critical factors.
🎯 Typical Applications
Based on the XL-PT928-6C's electrical characteristics and spectral sensitivity, the following use cases are optimal:
- Industrial Automation: Implementation in counters, thermal imaging systems, and photoelectric switches where consistent detection is required.
- Medical Devices: Integration into pulse oximeters and endoscopic lighting systems, leveraging the 940nm peak sensitivity.
- Remote Control Systems: Utilized in infrared receivers for consumer electronics and camera monitoring heads.
- Robotics: Essential for line-following and obstacle avoidance sensors in intelligent cars and robotic arms.
- Wireless Communication: Enabling short-range infrared data transmission modules.
📊 Key Technical Specifications
The following table outlines the electro-optical characteristics under standard test conditions (Ta=25°C), helping engineers verify signal performance:
| Parameter | Symbol | Test Condition | Min. | Max. | Unit |
|---|---|---|---|---|---|
| Peak Sensitivity Wavelength | λp | — | — | 940 | nm |
| Spectral Bandwidth | λ0.5 | — | 400 | 1100 | nm |
| Collector-Emitter Saturation Voltage | Vce(SAT) | Ic=2mA, Ee=1mW/cm² | — | 0.4 | V |
| Collector Dark Current | Io | Vce=20V, Ee=0 | — | 100 | nA |
| Rise / Fall Time | Tr / Tf | Vce=5V, Ic=1mA | — | 15 | μs |
| On-State Collector Current | Ic(ON) | Vce=5V, Ee=0.55mW/cm² | 0.513 | 3.433 | mA |
💡 Design Note: The component features selectable rank bins (e.g., 6-1, 7-3) for gain grouping, ensuring consistency in high-sensitivity circuits.
⚠️ Absolute Maximum Ratings & Process Limits
Exceeding these ratings may cause permanent device failure. 👇 Design engineers must ensure that operational derating adheres to these limits to maintain yield rates and reliability.
| Parameter | Symbol | Maximum Rating | Unit | Notes |
|---|---|---|---|---|
| Power Consumption | Pd | 75 | mW | * |
| Collector-Emitter Voltage | VCEO | 30 | V | * |
| Emitter-Collector Voltage | VECO | 5 | V | * |
| Collector Current | IC(ON) | 20 | mA | * |
| Operating Temperature | Topr | -20 to +85 | °C | Ambient |
| Storage Temperature | Tstg | -40 to +85 | °C | Ambient |
| Soldering (Reflow) | Tsol | 260 | °C | ≤6s |
🔒 Critical Limit: Pulse width must be ≤0.1ms with a duty cycle ≤1/10 to prevent thermal overload during peak emission events.
📦 Package, Dimensions & Assembly Notes
Physical Specifications:
- Type: 3mm Through-Hole Technology (THT)
- Dimensions: 4.6 (L) x 4.5 (W) x 2.5 (H) mm
- Tolerance: ±0.30mm (unless specified)
- Packaging: EIA Standard, Moisture Proof, Anti-ESD Foil Bag (MSL Level 3)
Assembly Guidelines:
- Soldering: Manual welding should not exceed 300°C for 3 seconds. Reflow soldering is recommended at a peak of 260°C (≤6s).
- Precautions: ⚠️ Do not apply mechanical stress to the LED during heating. Ensure soldering points are >2.0mm from the colloid bottom to prevent epoxy damage.
- Cleaning: Repair post-soldering is not recommended; if unavoidable, use a double-head soldering iron to minimize thermal shock.
🚀 Sourcing & Supply Considerations
When integrating the XL-PT928-6C into your BOM, consider these supply chain factors to minimize lead time risks:
- Authenticity Verification: Confirm packaging labels match CPN (Batch/Rank) and MPN (Model) data sheets.
- Rank Consistency: For mass production, lock down specific rank bins (e.g., 6-1 vs 7-3) to ensure uniform sensitivity across all units.
- Moisture Sensitivity: Adhere to MSL Level 3 handling procedures; utilize dry packs if storage time exceeds floor life limits.
- Cross-Reference: Verify pin-out compatibility if substituting for alternative 3mm phototransistors to prevent PCB re-spin delays.
❓ FAQ
Q: What is the peak detection wavelength for the XL-PT928-6C? A: The device is optimized for 940nm, which is the standard wavelength for infrared remote controls and many industrial light curtains.
Q: Can this component be used for reflow soldering? A: Yes, it supports reflow soldering up to 260°C for ≤6 seconds. However, manual welding is limited to 300°C for 3 seconds per terminal.
Q: What does the "Rank" or "Bin" (e.g., 6-1, 7-2) indicate? A: The rank indicates the sensitivity grouping (gain) of the phototransistor. Selecting a specific bin ensures consistent output current (Ic) when exposed to the same light intensity.
Q: What is the maximum operating temperature range? A: The XL-PT928-6C operates reliably from -20°C to +85°C, making it suitable for most industrial and indoor medical environments.
Q: How should I handle storage to prevent damage? A: Store in the original anti-static moisture-proof bag. The MSL is Level 3, so components must be mounted within 168 hours of exposure to ambient atmosphere if the bag is opened.
