Overview
The QSB34GR, part of the QSB34 series from Fairchild Semiconductor (now onsemi), is a surface-mount silicon PIN photodiode. This component is designed for various optical sensing applications and is available in different package configurations. The QSB34GR is specifically tailored for over-mount board applications and features a daylight filter, making it suitable for use in environments with varying light conditions.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Operating Temperature | -25 to +85 | °C |
| Storage Temperature | -40 to +85 | °C |
| Soldering Temperature | 260 | °C |
| Reverse Voltage | 32 | V |
| Power Dissipation at 25°C | 150 | mW |
| Peak Sensitivity Wavelength | 940 | nm |
| Reception Angle at 1/2 Power | ±60 | ° |
| Photo Current | 25 - 37 | μA |
| Capacitance | 25 | pF |
| Rise Time | 50 | ns |
| Fall Time | 50 | ns |
| Package Type | PLCC 2 Lead, case 776AX (Pb-Free) | |
| Chip Size | 3 mm x 3 mm | |
| Sensitive Area | 2.55 mm x 2.55 mm |
Key Features
- Daylight Filter (QSB34GR and QSB34ZR only)
- Surface-Mount Packages: QSB34GR / QSB34CGR for Over-Mount Board, QSB34ZR / QSB34CZR for Under-Mount Board
- Fast PIN Photodiode
- Wide Reception Angle: 120°
- Large Chip Size: 3 mm x 3 mm
- Sensitive Area: 2.55 mm x 2.55 mm
- High Sensitivity
- Low Capacitance
- Pb-Free, Halogen Free/BFR Free, and RoHS Compliant
Applications
The QSB34GR is suitable for a variety of optical sensing applications, including:
- Optical communication systems
- Sensor systems requiring high sensitivity and fast response times
- Automotive and industrial automation systems
- Consumer electronics with optical sensing needs
- Medical devices requiring precise optical detection
Q & A
- What is the operating temperature range of the QSB34GR?
The operating temperature range is -25°C to +85°C.
- What is the peak sensitivity wavelength of the QSB34GR?
The peak sensitivity wavelength is 940 nm.
- What is the reception angle at 1/2 power for the QSB34GR?
The reception angle at 1/2 power is ±60°.
- What is the typical photo current of the QSB34GR?
The typical photo current is between 25 μA and 37 μA.
- Is the QSB34GR Pb-Free and RoHS compliant?
- What is the package type of the QSB34GR?
The package type is PLCC 2 Lead, case 776AX (Pb-Free).
- What is the chip size and sensitive area of the QSB34GR?
The chip size is 3 mm x 3 mm, and the sensitive area is 2.55 mm x 2.55 mm.
- What are the rise and fall times of the QSB34GR?
The rise and fall times are both 50 ns.
- What is the recommended soldering profile for the QSB34GR?
The recommended soldering profile includes pre-heating at 180-200°C, a peak temperature of 260°C, and specific time limits for each stage.
- What are some common applications of the QSB34GR?
Common applications include optical communication systems, sensor systems, automotive and industrial automation, consumer electronics, and medical devices.
