74476402 Equivalent & Substitute Parts

Part Overview

The Würth Elektronik 74476402 is a 2.2 µH unshielded drum core wirewound inductor rated for 320 mA with 1Ohm maximum DC resistance in a 1210 (3225 Metric) surface mount package. This component is active and widely used in filtering, energy storage, and signal conditioning applications. Equivalent parts may be required due to supply chain constraints, regional availability, or specific application requirements such as shielding characteristics or operating temperature ranges.

Substiute Parts

74476402

Würth ElektronikIn Stock: 186274476402 Datasheet

Current PartRFQ

CMH322522-2R2KL

Bourns Inc.In Stock: 4698CMH322522-2R2KL Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 74476402 is determined by the following critical parameters:

• Inductance value: 2.2 µH (±10% tolerance acceptable)
• Current rating: minimum 320 mA
• DC resistance: maximum 1Ohm
• Package: 1210 (3225 Metric) surface mount
• Core material: Ferrite drum core wirewound construction
• Physical dimensions: 0.126" L x 0.098" W (3.20mm x 2.50mm), height 0.094" max

The Bourns CMH322522-2R2KL meets all critical electrical and mechanical parameters. The primary difference is shielding configuration (shielded vs. unshielded) and extended operating temperature range (-55°C ~ 125°C vs. -40°C ~ 105°C), which represents an enhancement rather than a limitation for substitution purposes.

Parameter Comparison

Engineering Selection Recommendations

Both components are active products with identical RoHS3 compliance and REACH unaffected status, ensuring regulatory compatibility. The CMH322522-2R2KL substitute provides an extended operating temperature range (-55°C to 125°C) compared to the original part (-40°C to 105°C), making it suitable for applications requiring broader thermal performance. The shielded configuration of the substitute may provide electromagnetic interference mitigation benefits in noise-sensitive circuits. Selection between these parts should be based on application-specific requirements for shielding characteristics and thermal operating conditions.

Frequently Asked Questions (FAQ)

Q: Can the Bourns CMH322522-2R2KL directly replace the Würth Elektronik 74476402?

A: Yes. Both components share identical inductance (2.2 µH), current rating (320 mA), DC resistance (1Ohm max), tolerance (±10%), and physical package dimensions (1210/3225 Metric). Electrical performance at the specified test frequency (7.96 MHz) is equivalent.

Q: What is the difference between shielded and unshielded configurations?

A: The original 74476402 is unshielded, while the CMH322522-2R2KL substitute is shielded. Shielding reduces electromagnetic field radiation and susceptibility to external interference. Selection depends on circuit layout and EMI requirements.

Q: Are there temperature range limitations for substitution?

A: The substitute part operates across -55°C to 125°C, which encompasses the original part's -40°C to 105°C range. The extended range is compatible with applications requiring the original temperature specification.

Q: Do both parts have the same self-resonant frequency?

A: No. The 74476402 has a self-resonant frequency of 100MHz, while the CMH322522-2R2KL is rated at 75MHz. This difference should be evaluated for high-frequency applications above 75MHz.

Q: Are both parts RoHS and REACH compliant?

A: Yes. Both components are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.

Q: What is the moisture sensitivity level for these inductors?

A: Both parts are rated MSL 1 (Unlimited), indicating no moisture sensitivity restrictions for storage or handling.