The DO5040H-104MLD is a shielded power inductor manufactured by Coilcraft. It's engineered for use in a range of power supply applications requiring robust performance and minimal electromagnetic interference (EMI). Its rugged construction allows it to perform reliably in harsh environments.

Applications

• DC-DC Converters: Used in step-up (boost), step-down (buck), and inverting DC-DC converters.
• Power Supplies: Found in switching power supplies, linear regulators, and other power supply designs.
• Filtering Circuits: Employed for filtering noise in power lines and sensitive electronic circuits.
• Voltage Regulators: Used in various voltage regulation circuits to maintain stable voltage outputs.
• LED Drivers: Incorporated in LED driver circuits for efficient power delivery.

Features

• Shielded Construction: Effectively minimizes electromagnetic interference (EMI).
• High Current Handling: Designed to handle significant current levels without core saturation.
• Compact Design: Offers a small footprint, making it suitable for space-constrained applications.
• Low DC Resistance (DCR): Reduces power losses and improves overall efficiency.
• RoHS Compliant: Meets environmental standards for restricted substances.

Benefits

• Reduced Electromagnetic Interference (EMI): The shielded design minimizes EMI, leading to cleaner signal integrity and reduced interference with other components.
• Improved Efficiency: Low DCR reduces power dissipation, increasing the overall efficiency of the power circuit.
• Reliable Operation: Robust construction ensures reliable performance in demanding operating conditions.
• Compact Size: The small footprint allows for integration into compact electronic devices and high-density circuit boards.
• Enhanced Thermal Performance: Good heat dissipation properties allow for higher current handling capabilities.

Specifications

Specific parameters may slightly vary based on the production lot, but the general specifications for the DO5040H series, and specifically relevant to the 104MLD variant are generally as follows:

• Inductance: 100uH (104 represents 10 x 10^4 picohenries, equivalent to 100uH)
• Tolerance: Typically ±10% or ±20%
• Saturation Current: Generally ranges from 0.8A to 2A, depending on the specific test conditions.
• RMS Current: Typically between 0.6A and 1.5A, depending on temperature rise requirements.
• DCR (DC Resistance): Typically in the range of tens to hundreds of milliohms (e.g., 0.1 to 0.3 Ohms).
• Operating Temperature: -40°C to +125°C (including self-heating effects)
• Dimensions: Approximately 5.0mm x 5.0mm x 4.0mm (can vary slightly).

Note: For precise and up-to-date specifications, always refer to the official Coilcraft DO5040H-104MLD datasheet.