LHLP12NB151KB Equivalent & Substitute Parts

Part Overview

The LHLP12NB151KB is a 150 µH shielded inductor manufactured by Taiyo Yuden, rated for 1.3 A continuous current with a maximum DC resistance of 240 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

LHLP12NB151KB

Taiyo YudenIn Stock: 1179LHLP12NB151KB Datasheet

Current PartRFQ

RCP1317NP-151L

Sumida America Components Inc.In Stock: 1124RCP1317NP-151L Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LHLP12NB151KB is determined by the following critical parameters:

Primary Matching Criteria:

• Inductance value: 150 µH (exact match required)
• Core material: Ferrite (electromagnetic performance equivalence)
• Shielding: Shielded (EMI containment requirement)
• Mounting type: Through Hole (mechanical compatibility)
• Package configuration: Radial, Vertical Cylinder (PCB footprint compatibility)

Secondary Compatibility Criteria:

• Current rating: Substitute must equal or exceed 1.3 A
• DC resistance: Substitute must not exceed 240 mOhm to maintain circuit performance
• Operating temperature range: Substitute must cover or exceed the specified range
• RoHS compliance: ROHS3 certification required for regulatory alignment

The RCP1317NP-151L from Sumida America Components Inc. satisfies all primary matching criteria and exceeds secondary compatibility requirements, qualifying it as a direct substitute.

Parameter Comparison

Engineering Selection Recommendations

The RCP1317NP-151L qualifies as a direct substitute for the LHLP12NB151KB based on the following engineering factors:

Electrical Equivalence: Both components provide 150 µH inductance with ferrite core construction and shielded configuration. The substitute's superior current rating (1.9 A versus 1.3 A) and lower DC resistance (195 mOhm versus 240 mOhm) provide improved performance margins without circuit modification.

Mechanical Compatibility: Identical mounting type (through-hole) and package configuration (radial, vertical cylinder) ensure PCB footprint compatibility. Physical dimensions differ slightly (0.531" diameter and 0.689" height for substitute versus 0.512" diameter and 0.630" height for original), requiring verification of available board space in constrained layouts.

Regulatory Compliance: Both components maintain ROHS3 certification, satisfying environmental and regulatory requirements.

Product Lifecycle: The substitute's active product status ensures long-term availability and manufacturing support, addressing the obsolescence of the original component.

Temperature Consideration: The substitute's upper operating temperature limit is 5°C lower (100°C versus 105°C). Applications requiring sustained operation above 100°C require thermal analysis or alternative component selection.

Frequently Asked Questions (FAQ)

Q: Can the RCP1317NP-151L be used as a direct replacement for the LHLP12NB151KB without circuit modification?

A: Yes, for applications operating within the substitute's temperature range (-40°C to 100°C). The substitute's superior electrical performance (higher current rating and lower DC resistance) requires no circuit redesign. Physical dimensions must be verified for PCB layout compatibility.

Q: What is the significance of the different inductance tolerances (±10% versus ±15%)?

A: The original component maintains tighter tolerance (±10%), while the substitute allows ±15% variation. For circuits sensitive to inductance precision, measure the substitute's actual value during qualification. Most applications tolerate the wider tolerance without performance degradation.

Q: Are there packaging differences between these components?

A: The original LHLP12NB151KB uses standard through-hole packaging, while the RCP1317NP-151L is supplied in Tape & Reel format. This affects procurement and assembly processes but does not impact electrical or mechanical compatibility.

Q: How do the physical dimensions affect PCB design?

A: The substitute is slightly larger (0.531" diameter and 0.689" height versus 0.512" diameter and 0.630" height). Verify clearance in confined board areas, particularly near adjacent components or heat-generating elements.

Q: What is the saturation current specification for the substitute?

A: The RCP1317NP-151L specifies a saturation current (Isat) of 2.4 A. This parameter indicates the current level at which inductance begins to degrade. The original component does not provide this specification.

Q: Does the 5°C difference in maximum operating temperature affect component selection?

A: Applications operating continuously above 100°C require thermal analysis or alternative component selection. For most industrial and consumer applications operating at or below 100°C, this difference is not limiting.

Q: Are both components RoHS compliant?

A: Yes, both the LHLP12NB151KB and RCP1317NP-151L are ROHS3 compliant, meeting environmental and regulatory standards for restricted substance use.