Product Overview:
ON Semiconductor’s 1SMB5918BT3G Zener diode offers precise voltage regulation capabilities within electronic circuits. Engineered for optimal performance under high-stress conditions, this robust component ensures stability and reliability across various applications.
1SMB5918BT3G Product Label
Key Features:
Voltage Regulation: Provides a steady reference voltage that remains constant even when the input voltage or load conditions vary.
Power Dissipation: Capable of handling up to 3 Watts of power dissipation which enhances overall circuit durability.
Surface-Mount Package: Comes in an SMB (DO-214AA) surface-mount package allowing for efficient use of PCB space and easier manufacturing processes.
Wide Voltage Range Availability: With numerous breakdown voltages available, designers can select the appropriate version tailored to their specific requirements.
Technical Specifications:
Nominal Zener Voltage: 5.6V
Test Current: (20 mA)
Maximum Power Dissipation: (3 W)
Package/Case: SMB (DO‑214AA)
Applications:
This device is particularly well-suited for:
Overvoltage protection circuits where it clamps harmful voltage spikes to safeguard sensitive components.
Precise voltage reference points needed in analog-to-digital converters or other precision circuit elements.
Regulated power supply designs requiring consistent output despite fluctuations in input sources.
Benefits Over Competitors:
When compared against similar products:
The 1SMB5918BT3G provides reliable operation over a wide range of temperatures making it suitable for industrial-grade applications subject to harsh environmental conditions.
It features superior thermal performance due to its enhanced heat dissipation characteristics which ensure longevity even under continuous heavy loads.
As part of ON Semiconductor's portfolio known for quality components designed with rigorous standards — users can trust this Zener diode’s consistency and endurance over time.
1SMB5918BT3G Replacement Model
1SMB5918BT3G
Manufacturer: ON Semiconductor
Zener Voltage: Typically around 5.6V.
Power Dissipation: 3W
Package Type: SMB (Surface Mount Package)
This device is designed to provide voltage regulation with high peak reverse power dissipation capabilities, often used in stabilizing and clipping circuits with high power rating requirements.
Manufacturer: Diodes Incorporated
Zener Voltage: Typically around 18V.
Power Dissipation: 410mW
Package Type: SOD123 (Surface Mount Package)
The BZT52 series is designed to provide voltage regulation while occupying less space on the PCB due to its smaller package size compared to the SMB package of the 1SMB5918BT3G.
Comparison
When comparing these two models, here are some key points:
The most significant difference between them is their Zener breakdown voltage: one is at approximately 5.6 volts while the other is at approximately 18 volts, which means they're not directly interchangeable without considering circuit design implications.
Power Dissipation: The original model has a higher power dissipation capacity (3W) compared to that of its suggested replacement (410mW), indicating that it can handle more energy before overheating.
Package Size: The suggested replacement comes in a smaller package size which could be beneficial for space-constrained applications but might require different handling or mounting techniques during manufacturing processes.