Diode Arrays
Diode arrays are semiconductor devices that integrate multiple diodes into a single package and achieve multifunctional circuit integration through compact design.
1. What are the Core Principles and Characteristics of Diode Arrays?
Working Principle
Based on the photoelectric effect or avalanche multiplication effect of the PN junction, optical signals or currents are converted into electrical signals. The array structure can detect multiple signals simultaneously, significantly improving the detection accuracy and efficiency.
Key Parameters
Include response speed (nanosecond level), sensitivity (photocurrent/irradiance), dark current (leakage current when there is no light), spectral response range (such as ultraviolet to infrared band), and withstand voltage level (such as a TVS array can reach 600V).
2. What are the Main Types and Application Scenarios of Diode Arrays?
|
Type |
Structural Features |
Typical Application Scenarios |
|
Photodiode Array |
PIN structure enhances sensitivity |
Spectral analysis, digital imaging system |
|
TVS Protection Array |
Integrated overvoltage/overcurrent protection |
Ethernet port, high-speed data line protection |
|
Avalanche Diode Array |
Avalanche zone achieves current multiplication |
Weak light detection, LiDAR |
3. What are the Technical Advantages and Development of Diode Arrays?
Efficient Integration: Optimize PCB layout through streamlined packaging (such as D2PAK, LCC) to reduce high-frequency signal loss.
Protection Performance: TVS array can withstand ±30kV electrostatic discharge (IEC 61000-4-2) and 35A lightning surge (8/20μs).
Trend Direction: Towards low capacitance (<3pF), high withstand voltage (1200V GaN/SiC devices), and multi-functional integration.
4. Typical Products and Manufacturers of Diode Arrays
Photoelectric Arrays: High-sensitivity imaging modules of Hamamatsu and OSI Optoelectronics.
TVS Array: SP4031 series (10/100/1000BaseT protection), supports 3.3V low operating voltage.
Power Device: 900V withstand voltage MOSFET with integrated super junction technology.
Note: Diode arrays have become core components for high-speed communications, precision detection, and power electronics by balancing speed, protection, and integration through customized design.
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