LHLP16NB331K Equivalent & Substitute Parts

Part Overview

The LHLP16NB331K is a 330 µH shielded inductor manufactured by Taiyo Yuden, rated for 1.3 A continuous current with a maximum DC resistance of 310mOhm. 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, necessitating identification of equivalent alternatives for ongoing design requirements and procurement needs.

Substiute Parts

LHLP16NB331K

Taiyo YudenIn Stock: 784LHLP16NB331K Datasheet

Current PartRFQ

RCP1317NP-331L

Sumida America Components Inc.In Stock: 809RCP1317NP-331L Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LHLP16NB331K is determined by the following critical parameters:

Primary Matching Criteria:

• Inductance value: 330 µH (exact match required)
• Core material: Ferrite (electromagnetic performance consistency)
• Shielding: Shielded (EMI containment requirement)
• Mounting type: Through Hole (PCB assembly compatibility)
• Package configuration: Radial, Vertical Cylinder (mechanical fit)

Secondary Compatibility Criteria:

• Current rating: Substitute must equal or exceed 1.3 A
• DC resistance: Substitute must not exceed 310mOhm significantly to maintain circuit performance
• Operating temperature range: Substitute must cover or exceed the -25°C to 105°C range
• RoHS compliance: ROHS3 Compliant status required for regulatory alignment

The RCP1317NP-331L from Sumida America Components Inc. qualifies as a substitute based on matching inductance, core material, shielding, mounting type, and package configuration. The substitute exhibits higher current rating (1.5 A) and saturation current (1.6 A), providing design margin. However, the DC resistance is elevated at 360mOhm maximum, and the operating temperature range is -40°C to 100°C, which differs from the original specification.

Parameter Comparison

Engineering Selection Recommendations

The RCP1317NP-331L is an active product with confirmed availability, addressing the obsolescence status of the LHLP16NB331K. Both components maintain ROHS3 compliance, satisfying regulatory requirements for new designs and procurement.

The substitute provides increased current rating (1.5 A versus 1.3 A) and defined saturation current (1.6 A), offering operational margin in current-limited applications. The elevated DC resistance (360mOhm versus 310mOhm) represents a 16% increase, which may impact power dissipation characteristics in circuits sensitive to inductor losses.

Physical dimensions differ between the two components. The RCP1317NP-331L is smaller in diameter (13.50mm versus 17.00mm) and height (17.50mm versus 19.00mm), potentially enabling PCB layout optimization or space reduction. PCB footprint verification is necessary to confirm mechanical compatibility.

The operating temperature range of the substitute (-40°C to 100°C) does not fully encompass the original specification (-25°C to 105°C). Applications requiring operation at temperatures above 100°C or below -40°C require evaluation against actual circuit thermal requirements.

Frequently Asked Questions (FAQ)

Q: Can the RCP1317NP-331L directly replace the LHLP16NB331K in existing designs?

A: Direct replacement is possible for applications where the 360mOhm DC resistance and -40°C to 100°C operating range are acceptable. PCB footprint verification is required due to dimensional differences. The smaller package size may require layout adjustment.

Q: What is the significance of the 50mOhm increase in DC resistance?

A: The increase from 310mOhm to 360mOhm represents a 16% rise in series resistance. In circuits where inductor losses contribute significantly to thermal budget or efficiency calculations, this difference must be evaluated against design margins.

Q: Are both components suitable for new designs?

A: The RCP1317NP-331L is classified as active and is the appropriate choice for new designs. The LHLP16NB331K is obsolete and should not be specified for new development.

Q: How do the inductance tolerances affect circuit performance?

A: The LHLP16NB331K specifies ±10% tolerance, while the RCP1317NP-331L specifies ±15% tolerance. Circuits with tight inductance requirements must account for the wider tolerance band of the substitute.

Q: What are the packaging differences between these components?

A: The LHLP16NB331K is supplied in standard packaging, while the RCP1317NP-331L is supplied in Tape & Reel (TR) format. Tape & Reel packaging is standard for automated assembly processes and does not affect component electrical performance.

Q: Is the smaller physical size of the RCP1317NP-331L a limitation?

A: The smaller dimensions (13.50mm diameter, 17.50mm height versus 17.00mm diameter, 19.00mm height) represent a design advantage for space-constrained applications. PCB layout must accommodate the different footprint, but no electrical limitation exists.

Q: Do both components meet current environmental and compliance standards?

A: Both components are ROHS3 compliant and suitable for applications requiring environmental compliance. The RCP1317NP-331L, as an active product, receives ongoing compliance verification from the manufacturer.