📌 Product Overview
The XL-PD3227B is a compact infrared receiving diode housed in a black colloid package with outline dimensions of 3.2 x 2.7 x 1.0 mm. Designed for high energy efficiency and fast startup, this component utilizes EIA standard packaging to facilitate automated Surface Mount Technology (SMT) assembly processes. It is specifically engineered to detect infrared signals at a peak wavelength of 940 nm.
This device is ideally suited for applications requiring precise photodetection and signal transmission. Its design targets consumer electronics, such as infrared remote controllers, as well as more robust industrial environments. 📈 The black epoxy casing minimizes visible light interference, ensuring reliable signal integrity in varying ambient conditions.
🚀 Typical Applications
Based on its technical specifications and environmental ratings, the XL-PD3227B is optimized for the following use cases:
- Industrial Control: Smart meters, thermal imaging systems, and automatic counters.
- Consumer Electronics: Infrared remote controllers for TVs and set-top boxes.
- Robotics: Intelligent cars and autonomous robots for obstacle detection.
- Surveillance: Camera monitoring heads utilizing active IR illumination.
- Wireless Systems: Short-range wireless communication and photoelectric switches.
📊 Key Technical Specifications
The following table outlines the initial electrical and optical characteristics ($T_a=25^\circ\text{C}$).
| Parameter | Symbol | Test Condition | Min / Typ | Unit |
|---|---|---|---|---|
| Open-Circuit Voltage | $V_{OC}$ | $\lambda_P=940\text{nm}, E_e=5\text{mW/cm}^2$ | 0.41 | V |
| Short-Circuit Current | $I_{SC}$ | $\lambda_P=940\text{nm}, E_e=1\text{mW/cm}^2$ | 6.5 | $\mu\text{A}$ |
| Reverse Light Current | $I_L$ | $V_R=5\text{V}, E_e=1\text{mW/cm}^2$ | 6.5 | $\mu\text{A}$ |
| Reverse Dark Current | $I_D$ | $V_R=10\text{V}, E_e=0$ | 10 | nA |
| Total Capacitance | $C_t$ | $V_R=5\text{V}, f=1\text{MHz}$ | 6 | pF |
| Rise/Fall Time | $T_r / T_f$ | $V_R=10\text{V}, R_L=1\text{k}\Omega$ | 10 | $\mu\text{s}$ |
| Peak Wavelength | $\lambda_P$ | - | 940 | nm |
| Spectral Bandwidth | $\lambda_{0.5}$ | - | 730 ~ 1100 | nm |
🔒 Absolute Maximum Ratings & Process Limits
Exceeding these ratings may cause permanent damage to the device. ⚠️ Design engineers must ensure that operational loads stay within these boundaries to maintain yield rates and reliability.
| Parameter | Symbol | Maximum Rating | Unit |
|---|---|---|---|
| Power Consumption | $P_d$ | 150 | mW |
| Reverse Voltage | $V_R$ | 32 | V |
| Operating Temp. | $T_{opr}$ | -20 to +85 | $^\circ\text{C}$ |
| Storage Temp. | $T_{stg}$ | -40 to +85 | $^\circ\text{C}$ |
| Welding Conditions | $T_{sol}$ | 260 | $^\circ\text{C}\le6\text{S}$ |
Note: The recommended maximum welding temperature is 240°C for 6 seconds.
🏗️ Package, Dimensions & Assembly Notes
The XL-PD3227B features a compact outline with dimensional tolerances of $\pm 0.30\text{mm}$ unless otherwise specified.
- Dimensions: 3.2mm (L) x 2.7mm (W) x 1.0mm (H).
- Tolerance: Standard dimensional tolerance is $\pm 0.30\text{mm}$.
- Packaging: Moisture Proof and Anti-Electrostatic Foil Bag (MSL Level 3).
Assembly & Soldering Guidelines:
- Soldering Profile: The recommended maximum temperature is $240^\circ\text{C}$ for 6 seconds.
- Reflow: It is recommended to perform reflow soldering only once.
- Mechanical Stress: Do not apply pressure to the LED during heating.
- PCB Warping: Ensure the circuit board does not warp after soldering.
📦 Sourcing & Supply Considerations
- Compliance: The product is RoHS compliant, adhering to environmental protection standards.
- Packaging Standard: Utilizes EIA standard packaging for compatibility with high-volume automated pick-and-place machines.
- Moisture Sensitivity: Classified as MSL Level 3; ensure proper handling and baking before reflow if exposed to ambient humidity.
- Authenticity: Verify sourcing channels to ensure correct binning and spectral sensitivity characteristics for critical applications.
❓ Frequently Asked Questions
Q: What is the peak detection wavelength for the XL-PD3227B? A: The XL-PD3227B has a peak sensitivity wavelength ($\lambda_P$) of 940 nm, making it compatible with standard IR emitter technologies.
Q: What are the storage temperature limits for this component? A: The storage ambient temperature range ($T_{stg}$) is -40°C to +85°C. Storage outside this range may degrade the black colloid or internal connections.
Q: Can this device be used for hand soldering repairs? A: While hand soldering is possible, it is not recommended after the unit is soldered to the board. If unavoidable, use a soldering iron tip temperature below 300°C for less than 3 seconds with a capacity under 25W.
Q: What is the Moisture Sensitivity Level (MSL) for the XL-PD3227B? A: The component is classified as MSL Level 3. This requires specific handling procedures to prevent moisture-induced damage during the reflow soldering process.
Q: What is the maximum reverse voltage this diode can withstand? A: The Absolute Maximum Rating for Reverse Voltage ($V_R$) is 32 V. Exceeding this voltage risks reverse breakdown and permanent device failure.
