LHLP10NB221KB Equivalent & Substitute Parts

Part Overview

The LHLP10NB221KB is a 220 µH shielded inductor manufactured by Taiyo Yuden, designed for through-hole mounting applications requiring moderate current handling and compact radial geometry. This component features a ferrite core with 700mOhm maximum DC resistance and supports currents up to 630 mA across an operating temperature range of -25°C to 105°C.

The LHLP10NB221KB is classified as obsolete. Locating equivalent or substitute components is necessary to support ongoing production requirements, field repairs, and design continuity where this inductor was originally specified.

Substiute Parts

LHLP10NB221KB

Taiyo YudenIn Stock: 1047LHLP10NB221KB Datasheet

Current PartRFQ

7447471221

Würth ElektronikIn Stock: 11377447471221 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LHLP10NB221KB is determined by the following critical parameters:

Primary Matching Criteria:

• Inductance value: 220 µH (exact match required)
• Shielding: Shielded configuration
• Core material: Ferrite
• Mounting type: Through hole
• Package geometry: Radial, vertical cylinder with 0.433" (11.00mm) diameter

Secondary Compatibility Factors:

• Current rating must equal or exceed 630 mA
• DC resistance must not exceed 700mOhm
• Operating temperature range must encompass the original specification or be compatible with application requirements
• RoHS3 compliance maintained

The substitute part 7447471221 (Würth Elektronik WE-TIS series) satisfies all primary matching criteria and exceeds the current rating specification, making it a valid functional equivalent for the obsolete LHLP10NB221KB.

Parameter Comparison

Engineering Selection Recommendations

LHLP10NB221KB (Taiyo Yuden) – Original Specification

Status: Obsolete. This component is no longer in active production. Continued sourcing is limited to existing inventory stocks.

7447471221 (Würth Elektronik WE-TIS Series) – Active Substitute

Status: Active production. This substitute provides functional equivalence with the following advantages:

• Current rating of 1.3 A exceeds the original 630 mA specification, providing design margin
• DC resistance of 320mOhm is significantly lower than the 700mOhm maximum of the original, resulting in reduced power dissipation
• Extended operating temperature range (-40°C to 125°C) provides broader environmental compatibility
• Identical inductance value (220 µH) and shielded ferrite core configuration
• Identical radial, vertical cylinder package geometry with 11.00mm diameter
• Height difference of 0.020" (0.50mm) is negligible for most through-hole PCB applications
• ROHS3 compliance maintained

The 7447471221 is suitable for direct substitution in applications where the original LHLP10NB221KB was specified, provided that the 0.50mm height increase does not create mechanical constraints in the target assembly.

Frequently Asked Questions (FAQ)

Q: Can the 7447471221 be used as a direct replacement for the LHLP10NB221KB?

A: Yes. Both components share identical inductance (220 µH), shielding configuration, core material (ferrite), mounting type (through hole), and package geometry (radial, vertical cylinder with 11.00mm diameter). The 7447471221 exceeds the current rating and provides lower DC resistance, making it functionally compatible.

Q: What is the significance of the current rating difference (630 mA vs. 1.3 A)?

A: The substitute part has a higher current rating, which provides design margin and reduces thermal stress during operation. If the application draws 630 mA or less, the substitute will operate with lower temperature rise due to its lower DC resistance (320mOhm vs. 700mOhm).

Q: Does the 0.50mm height difference affect PCB compatibility?

A: The LHLP10NB221KB has a seated height of 0.433" (11.00mm), while the 7447471221 has a seated height of 0.453" (11.50mm). This 0.020" (0.50mm) difference is negligible for most through-hole applications. Verify clearance in applications with tight vertical constraints, such as stacked PCB assemblies or enclosures with minimal internal height.

Q: What is the difference in inductance tolerance between these parts?

A: The LHLP10NB221KB has ±10% tolerance, while the 7447471221 has ±20% tolerance. For applications requiring tighter inductance control, the original specification should be verified. However, both tolerances are within typical ranges for ferrite inductor applications.

Q: Are both components RoHS3 compliant?

A: Yes. Both the LHLP10NB221KB and 7447471221 are ROHS3 compliant, ensuring compatibility with environmental and regulatory requirements.

Q: What is the operating temperature range difference?

A: The LHLP10NB221KB operates from -25°C to 105°C, while the 7447471221 operates from -40°C to 125°C. The substitute provides a wider temperature envelope, supporting applications in more extreme thermal environments.

Q: How does DC resistance affect circuit performance?

A: The 7447471221 has significantly lower DC resistance (320mOhm max vs. 700mOhm max). In circuits where the inductor carries continuous current, lower DCR reduces I²R losses and heat generation. This is advantageous for efficiency-sensitive applications.