IHSM4825ER220L: Description, Features, and Applications

What is an IHSM4825ER220L?

The IHSM4825ER220L is a high-current surface mount inductor manufactured by Vishay Dale. It offers an inductance of 22 μH with a tolerance of ±15% and is designed for surface mount applications. This inductor features high current capability and superior environmental protection due to its completely encapsulated winding, providing excellent moisture resistance.

It utilizes a flame-retardant encapsulant rated UL 94 V-0 and is RoHS compliant, with a lead-free tin (Sn) plating finish. The operating temperature ranges from -55°C to +125°C without load, and from -55°C to +85°C at full rated current. The IHSM4825ER220L is ideal for power line noise filters, switching regulated power supply filters, DC/DC converters, SCR and triac controls, and RFI suppression.

IHSM4825ER220L Dimensions

Key Features of IHSM4825ER220L

The IHSM4825ER220L is a high current, surface mount inductor with several key features:

Electrical Specifications

• Inductance: 22 μH with a tolerance of ±15%
• Rated Current: 1.7 A maximum
• DC Resistance: 152 mΩ maximum
• Saturation Current: 1.02 A

Physical Characteristics

• Package: Surface mount design
• Size: 0.540" L x 0.250" W (13.72 mm x 6.35 mm)
• Core Material: High resistivity ferrite core
• Encapsulation: Epoxy encapsulant

Environmental Specifications

• Operating Temperature Range: -55°C to +125°C (no load); -55°C to +85°C (at full rated current)
• Environmental Protection: Completely encapsulated winding for superior protection against moisture and environmental factors

Compliance and Safety

• RoHS Compliance: Yes, RoHS compliant
• Lead-Free: Totally lead-free with tin (Sn) plating finish
• Flame Retardant: Uses a flame retardant encapsulant rated UL 94 V-0

Additional Features

• Moisture Sensitivity Level (MSL): Floor Life-Unlimited
• Series: Part of the IHSM-4825 series

These features make the IHSM4825ER220L suitable for various applications, including power line noise filters, DC/DC converters, and RFI suppression in demanding electronic designs where high current capability and environmental robustness are required.

IHSM4825ER220L Specifications

Advantages of Using IHSM4825ER220L

The IHSM4825ER220L inductor, manufactured by Vishay Intertechnology, offers several key advantages that make it suitable for various applications:

Electrical Performance:

High Current Handling: This inductor has excellent saturation current handling capability, allowing it to support larger currents. This makes it ideal for applications requiring efficient energy transfer.

Low DC Resistance: The IHSM4825ER220L features very low DC resistance (DCR), which helps reduce power consumption and improve overall circuit efficiency. This is particularly beneficial in power management and voltage regulation applications.

Design and Construction:

Shielded Design: The inductor's shielded construction effectively reduces electromagnetic interference (EMI), making it suitable for use in noise-sensitive environments such as communication equipment and medical devices.

Compact Size: With a package size of 4825 (12.3 mm x 12.3 mm), this inductor is compact enough to be easily integrated into space-constrained circuit boards.

Environmental Protection: The IHSM4825ER220L features a completely encapsulated winding, providing superior environmental protection and moisture resistance.

Reliability and Compliance:

High Reliability: This inductor is designed to maintain stable performance in harsh environments and can operate across a wide temperature range from -55°C to +125°C, making it suitable for industrial and automotive applications.

RoHS and Halogen-Free: The IHSM4825ER220L is RoHS-compliant and halogen-free, meeting high environmental standards.

Manufacturing and Integration:

Reflow Soldering Compatible: This inductor is compatible with both infrared and conventional reflow soldering methods, facilitating easy integration into manufacturing processes.

Pick and Place Compatible: The design allows for automated pick-and-place assembly, improving manufacturing efficiency.

Tape and Reel Packaging: The inductor is available in tape and reel packaging, further enhancing its suitability for automated handling and assembly.

By combining these advantages, the IHSM4825ER220L proves to be a versatile and reliable choice for various applications, including power management, DC-DC converters, AC-DC power supplies, LED drivers, communication equipment, industrial control systems, and automotive electronics.

IHSM4825ER220L Applications

The IHSM4825ER220L is a high-current surface mount inductor manufactured by Vishay Dale with several key applications:

Power Management

This inductor is commonly used in power management circuits, particularly in:

• DC-DC converters
• Voltage regulators
• Switching power supplies
• LED drivers

Its high current handling capability (rated for 1.7A) and low DC resistance make it well-suited for efficient energy transfer in power circuits.

Filtering

The IHSM4825ER220L can be utilized for:

• Noise suppression
• EMI filtering
• Signal conditioning

Its shielded design helps reduce electromagnetic interference, making it suitable for noise-sensitive applications.

Signal Processing

This inductor finds applications in various signal-processing circuits, including:

• Oscillators
• Inductive coupling circuits
• Voltage transformation

Specific Industry Applications

• Communications Equipment: The inductor's EMI shielding and compact size make it suitable for use in communication devices.
• Automotive Electronics: With an operating temperature range of -55°C to +125°C, it can withstand harsh automotive environments.
• Industrial Control Systems: Its high reliability and performance over a wide frequency range suit industrial applications.
• Medical Devices: The shielded design is beneficial for noise-sensitive medical equipment.

Working Principle of IHSM4825ER220L

The IHSM4825ER220L operates based on the fundamental principle of electromagnetic induction. When current flows through the inductor's coil, it generates a magnetic field. This magnetic field stores energy, which can be released back into the circuit when the current changes.

Key Functions:

Energy Storage: The inductor temporarily stores electrical energy in its magnetic field.

Current Smoothing: It resists rapid changes in current, helping to smooth out fluctuations in power supply circuits.

Voltage Regulation: In combination with other components, it aids in maintaining stable voltage levels.

Specifications and Characteristics:

The IHSM4825ER220L has the following key specifications:

• Inductance: 22μH with a tolerance of ±15%1
• Maximum DC Resistance: 152 mOhms6
• Saturation Current: 1.3 A6
• Operating Temperature Range: -55°C to +125°C

Applications:

This power inductor is commonly used in various electronic circuits, particularly in:

• DC-DC converters
• AC-DC power supplies
• Voltage regulators
• In these applications, the IHSM4825ER220L helps with energy storage, filtering, and maintaining stable power output.

Design Considerations:

When incorporating the IHSM4825ER220L into a circuit design, engineers should consider:

• The required inductance value for the specific application
• Maximum current handling capability
• DC resistance to minimize power losses
• Operating temperature range to ensure reliability in the intended environment

By leveraging its energy storage and current smoothing capabilities, the IHSM4825ER220L plays a crucial role in optimizing power management and voltage regulation in electronic systems.

IHSM4825ER220L compared to other inductors in the same series

IHSM4825ER220L Equivalents

Key Considerations for IHSM4825ER220L Equivalents

When looking for equivalents to the IHSM4825ER220L, consider the following factors:

• Inductance value (22μH)
• Tolerance (±15%)
• Current rating (1.7A max DC current, 1.3A saturation current)
• DC resistance (152 mOhm max)
• Package dimensions (13.72mm x 6.35mm x 5.72mm)
• Operating temperature range (-55°C to +125°C)
• Core material (Ferrite)
• Shielding (Unshielded)
• Mounting type (Surface Mount)

The most direct equivalents are the IHSM4825PJ220L, IHSM4825RE220L, and IHSM4825EB220L, as they match the key specifications of the IHSM4825ER220L. For applications with different inductance requirements, the IHSM4825ER101L (100μH) or IHSM4825ER221L (220μH) could be considered, keeping in mind the differences in current handling and DC resistance.

IHSM4825ER220L Datasheet

IHSM4825ER220L Datasheet