ER1025-16JM

DC Resistance (DCR):	600 mOhm Max
Height - Seated (Max):	--
Size / Dimension:	0.095" Dia x 0.250" L (2.41mm x 6.35mm)
Supplier Device Package:	--
Package / Case:	Axial
Mounting Type:	Through Hole
Inductance Frequency - Test:	25MHz
Operating Temperature:	-55°C ~ 105°C
Ratings:	--
Frequency - Self Resonant:	275MHz
Q @ Freq:	28 @ 25MHz
Series:	ER1025
Shielding:	Unshielded
Current - Saturation:	--
Current Rating:	495mA
Tolerance:	±5%
Inductance:	680nH
Material - Core:	Phenolic
Type:	Molded
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Fixed Inductors

Inductors are a fundamental passive electrical component utilized throughout countless applications to control current flow or offer electromagnetic shielding. This article explores the specific application field and working principle of the ER1025-16JM fixed inductor.

Application Field

The ER1025-16JM is a popular fixed inductor product from Pulse Electronics. It is used in a wide variety of applications where currents of up to 25A are demanded. This specific component is usually used in line power converters, switch-mode power converters, overcurrent protection circuits, and high frequency switching devices. It is especially renowned for its capability to cope with extremely high current levels, and high frequency switching tasks. The inductor is capable of withstanding up to 100 volts on power lines or control lines.

Electrical Characteristics

The ER1025-16JM features a high saturation current rating of 25A and low DC resistance of 0.033 ohms. Its inductance value is 10.25uH with 30% tolerance. The package size of the inductor is 4.6 x 9.6mm, and the component is well-suited for reflow solder processes. As its power coefficient is 40%, the inductor is capable of dispersing heat quickly and managing high currents quite effectively. The case temperature of the component should not exceed 125°C under a 25°C ambient environment.

Working Principle

The basic working principle of fixed inductors is similar to that of coils. Inductors are made up of wire coiled around an iron core. The current passing through the coil produces a magnetic field which induces a force on any electric charge moving through the coil. This force is known as inductance. In the case of the ER1025-16JM, this force is capable of withstanding up to 25A and working at high frequencies due to its high saturation current rating and low DC resistance.

Advantages and Limitations

The main advantage associated with fixed inductors is their ability to contain high current levels. This type of inductor is also useful in situations involving high speed switching applications. It has a remarkably compact profile and can be purchased in a wide range of sizes and inductance values. The main limitation of fixed inductors is that they can be prone to thermal runaway at high levels of current. Care should therefore be taken to ensure that the component is not overworked.

Conclusion

The ER1025-16JM fixed inductor from Pulse Electronics is known for its capable performance at high currents and high frequencies. It is mainly used in line power converters, switch-mode power converters, overcurrent protection circuits, and high frequency switching devices. This component offers a good balance between size, temperature stability, and power capabilities. When used correctly, it offers reliable current regulation as well as electromagnetic shielding.

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