Introduction of UDZLVTE-1791
Ⅰ. Product overview of UDZLVTE-1791
The UDZLVTE-1791 is a compact high-voltage Zener diode from ROHM Semiconductor, featuring a nominal Zener voltage of 91V. It is mainly designed for voltage regulation, voltage limiting, and circuit protection. Its small SOD-323FL surface-mount package makes it suitable for space-constrained electronic designs.
Ⅱ. UDZLVTE-1791 Core parameter
Category: Discrete Semiconductor Products Diodes Zener Single Zener Diodes
Current - Reverse Leakage @ Vr: 200 nA @ 69 V
Mfr: Rohm Semiconductor
Operating Temperature: 150°C
Packaging: Tape & Reel (TR) Cut Tape (CT) Digi-Reel®
Mounting Type: Surface Mount
Part Status: Active
Package / Case: SC-90, SOD-323F
Voltage - Zener (Nom) (Vz): 91 V
Supplier Device Package: SOD-323FL
Power - Max: 200 mW
Base Product Number: UDZLVTE
Ⅲ. UDZLVTE-1791 Main characteristics
High-voltage Zener regulation: The device is a high-voltage Zener diode with a nominal 91V Zener voltage, making it suitable for voltage limiting and regulation on relatively high-voltage nodes. Unlike low-voltage Zener diodes, its selection should focus on the circuit's operating voltage and the required Zener voltage range.
Compact surface-mount design: The UDZLVTE-1791 uses a compact SOD-323FL surface-mount package, making it suitable for PCB designs where board space is limited. Its SMD construction is also well suited to automated PCB assembly.
Voltage limiting capability: One of the key functions of a Zener diode is voltage limiting. When the reverse voltage reaches the Zener operating region, the device can help prevent the voltage from increasing further. This makes Zener diodes useful for voltage clamping and circuit protection.
Low-power discrete semiconductor: The device has a maximum power dissipation of 200mW, making it more suitable for low-power voltage control, reference, and limiting applications. The actual circuit power dissipation should remain within the device's specified limit.
Small single-diode configuration: The UDZLVTE-1791 is a single Zener diode rather than a diode array. For component procurement, this distinction is important when matching a customer's BOM or replacement requirement.
Ⅳ. UDZLVTE-1791 Application field
Voltage regulation: It can be used in simple Zener-based voltage regulation circuits, where its reverse-breakdown characteristic helps maintain a relatively stable voltage at a specific circuit node.
Overvoltage limiting: The device can be used for overvoltage limiting. When the voltage exceeds the designed threshold, the Zener diode enters its breakdown region and helps limit the voltage at the protected node.
Voltage reference: The 91V Zener voltage can serve as a reference voltage in certain simple circuits, particularly where extremely high reference accuracy is not required.
Circuit protection: It can be applied to circuit nodes where abnormal voltage needs to be limited, including power-related circuits, control circuits, and other relatively high-voltage nodes.
Industrial electronic equipment: With its high-voltage Zener characteristics and compact SMD package, this type of device can be used in voltage control and protection circuits within various industrial electronic systems.
Ⅴ. Summary
Overall, the UDZLVTE-1791 is a 91V high-voltage Zener diode designed mainly for voltage regulation, voltage limiting, and circuit protection. For electronic component procurement, the key classification is Zener Diode, rather than a standard rectifier diode or a TVS diode.