onsemi,1N5340B

onsemi, 1N5340B

The onsemi 1N5340B is a high-quality Zener diode designed for applications requiring precise voltage regulation and dependable performance. As part of onsemi’s trusted portfolio of discrete semiconductors, the 1N5340B stands out for its stability, ruggedness, and suitability for a variety of industrial and commercial uses.

At its core, the 1N5340B is a Zener voltage regulator diode with a nominal Zener voltage of 7.5V and a power dissipation rating of 5 watts. This combination makes it ideal for medium-power regulation tasks, where maintaining a consistent voltage under varying load and input conditions is critical. Unlike smaller signal diodes, the 1N5340B is built to handle higher current levels while keeping the regulated voltage within a tight tolerance.

Structurally, the device is packaged in the DO-201 axial-lead style, providing mechanical strength and straightforward integration into through-hole PCB designs or custom assemblies. Its robust glass-passivated junction construction gives it excellent thermal stability, allowing it to function reliably in environments with fluctuating temperatures or moderate thermal stress.

Key Electrical Specifications of the onsemi 1N5340B:

• Zener Voltage (Vz): 7.5V ±5% at specified test current
• Power Dissipation (Pmax): 5W
• Test Current (Iz): Generally set around 68mA for accurate voltage measure
• Reverse Leakage Current (Ir): Minimal, enabling efficient regulation with low wasted current
• Operating Temperature Range: -65°C to 200°C junction temperature limit

Applications The 1N5340B’s main role is in voltage regulation, but it can be found in a wide range of tasks:

• Power supplies: Clamping and regulating output voltage for DC supplies
• Protection circuits: Acting as an overvoltage safeguard in sensitive electronic systems
• Reference voltage generation: Serving as a stable voltage point in measurement and control equipment
• Industrial electronics: Used in motor control systems, automation panels, and instrumentation for reliable voltage control

One of the appealing aspects of the 1N5340B is its proven reliability in scenarios where cheaper or low-power Zener options fail over time. The 5W dissipation rating means it can act as both a regulator and a protective device in circuits with larger transient loads without quickly succumbing to thermal stress.

For designers, working with the 1N5340B is straightforward—its DO-201 form factor provides easy soldering and robust mechanical connection. In prototyping, engineers often pair it with series resistors to fine-tune current flow, ensuring the Zener operates within its specified limits.

From a sourcing perspective, onsemi’s manufacturing standards guarantee consistent batch quality and compliance with industry norms. As an authorized distributor, we supply the 1N5340B with full traceability and datasheets to assist engineers and purchasing managers in making informed choices.

Whether you need dependable voltage regulation in your next design or a rugged protective component, the onsemi 1N5340B remains an enduring choice in the electronics industry—combining stability, high power handling, and proven performance.

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