LHLP12NB101KB Equivalent & Substitute Parts

Part Overview

The LHLP12NB101KB is a 100 µH shielded inductor manufactured by Taiyo Yuden, rated for 1.6 A continuous current with a maximum DC resistance of 160 mOhm. This through-hole radial component features a ferrite core and operates across the temperature range of -25°C to 105°C. The part is classified as obsolete, making identification of equivalent substitutes necessary for ongoing design support and procurement continuity.

Substiute Parts

LHLP12NB101KB

Taiyo YudenIn Stock: 893LHLP12NB101KB Datasheet

Current PartRFQ

7447471101

Würth ElektronikIn Stock: 11747447471101 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LHLP12NB101KB is based on the following critical parameters:

Primary Matching Criteria:

• Inductance value: 100 µH (exact match required)
• Current rating: 1.6 A minimum (equal or greater)
• Shielding: Shielded configuration
• Core material: Ferrite
• Mounting type: Through hole
• Package configuration: Radial, vertical cylinder

Secondary Compatibility Factors:

• DC resistance within acceptable operating limits
• Operating temperature range coverage
• RoHS3 compliance for regulatory alignment

The substitute part 7447471101 (Würth Elektronik WE-TIS series) satisfies all primary matching criteria. While tolerance and DC resistance specifications differ from the original part, these variations remain within acceptable engineering parameters for equivalent functionality in the target application.

Parameter Comparison

Engineering Selection Recommendations

The LHLP12NB101KB is obsolete and no longer available from the original manufacturer. The substitute part 7447471101 from Würth Elektronik is an active product with equivalent electrical specifications and maintains ROHS3 compliance.

Selection Basis:

The 7447471101 provides functional equivalence through matching inductance (100 µH), current rating (1.6 A), shielding configuration, ferrite core material, and through-hole radial mounting. The substitute operates across an extended temperature range (-40°C to 125°C) compared to the original part, providing broader environmental coverage.

DC resistance increases from 160 mOhm to 190 mOhm maximum, representing a 30 mOhm differential. Inductance tolerance widens from ±10% to ±20%. These parameter variations must be evaluated against specific circuit requirements to confirm suitability for the target application.

Both parts maintain ROHS3 compliance and are classified as EAR99 for export control purposes.

Frequently Asked Questions (FAQ)

Q: Can the 7447471101 directly replace the LHLP12NB101KB in existing designs?

A: The 7447471101 matches the critical electrical parameters: 100 µH inductance, 1.6 A current rating, shielded ferrite core, and through-hole radial mounting. Physical dimensions differ slightly (11.00 mm diameter vs. 13.00 mm, and 11.50 mm height vs. 16.00 mm), requiring PCB layout verification. DC resistance tolerance and inductance tolerance specifications differ and must be evaluated against circuit performance requirements.

Q: What are the physical dimension differences between these parts?

A: The LHLP12NB101KB measures 0.512" diameter (13.00 mm) with a maximum seated height of 0.630" (16.00 mm). The 7447471101 measures 0.433" diameter (11.00 mm) with a maximum seated height of 0.453" (11.50 mm). The substitute is physically smaller and requires confirmation that PCB footprint and clearance specifications accommodate the reduced dimensions.

Q: How do the DC resistance specifications affect circuit performance?

A: The LHLP12NB101KB specifies 160 mOhm maximum DC resistance, while the 7447471101 specifies 190 mOhm maximum. This 30 mOhm increase results in higher resistive losses in the inductor. Power dissipation and voltage drop calculations must be performed to confirm the substitute remains within acceptable operating parameters for the target application.

Q: Are both parts RoHS compliant?

A: Both the LHLP12NB101KB and 7447471101 are ROHS3 compliant and classified as EAR99 for export control purposes.

Q: What is the significance of the inductance tolerance difference?

A: The LHLP12NB101KB carries ±10% inductance tolerance, while the 7447471101 carries ±20% tolerance. Applications requiring tighter inductance control must account for the wider tolerance band of the substitute part. Circuit designs dependent on precise inductance values require performance validation across the full tolerance range.

Q: Does the extended operating temperature range of the substitute part provide additional benefits?

A: The 7447471101 operates from -40°C to 125°C compared to the LHLP12NB101KB range of -25°C to 105°C. The substitute provides extended low-temperature operation (-40°C vs. -25°C) and extended high-temperature operation (125°C vs. 105°C). Applications operating at temperature extremes benefit from this expanded range, though standard operating conditions must remain within the original part's specifications unless circuit design is modified.