BSPM4480HLGR

The BSPM4480HLGR is an AC/DC metal oxide varistor (MOV) from Littelfuse which provides semiconductor transient voltage suppression. It is a surface mount varistor designed primarily for applications where a wide operating voltage range (clamping voltage) of 5.4 to 44 Volts is required. This versatile component can be used in a wide variety of applications as long as it meets the surge ratings and electrical performance desired. In this article, we will discuss the application field and working principle of this particular MOV.

The BSPM4480HLGR belongs to the class of Varistors - MOVs. A varistor is a semiconductor component that is similar to a diode, except it has two electrodes instead of one. It is also known as a voltage-dependent resistor (VDR). MOVs transform high energy voltage surges into a lower energy level, and can be used in various electronic components to prevent electrical damage due to over-voltage or over-current. As such, they are also known as surge protectors. The protection provided by MOVs is proportional to the size of the surge, and the voltage range in which they operate is known as the clamping voltage.

The BSPM4480HLGR is designed for AC/DC applications that require wide operating voltage range and therefore has a wide clamping voltage range of 5.4 to 44V. This versatility allows it to be used in many types of applications, such as mobile communications, automotive electronics, AC/DC adapters, industrial equipment, and computer systems, among others.

The BSPM4480HLGR supports an energy rating of 1.34 Joules, which is sufficient for many applications. It is also available in a wide range of package sizes, making it suitable for a variety of uses. Additionally, it has a low thermal resistance, which allows it to dissipate heat quickly and remain stable.

In terms of its working principle, the BSPM4480HLGR utilizes a combination of a PTC thermistor and a Zener diode to protect the circuit from excessive input voltage or current. It works by forming an electrical bridge between the incoming and outgoing connections. The thermistor is responsible for suppressing the surge voltage, while the Zener diode regulates the current flow to ensure consistent performance. The design of the BSPM4480HLGR ensures that it can provide protection up to 44V AC or DC.

The BSPM4480HLGR is a versatile varistor that can be used in many applications due to its wide operating voltage range, energy rating, and other features. Its combination of a PTC thermistor and a Zener diode provides reliable over-voltage and over-current protection, allowing it to be used in a variety of AC/DC applications. As such, it is a great option for many applications that require a reliable surge protector.