LHL08TB331KSS Equivalent & Substitute Parts

Part Overview

The LHL08TB331KSS is a 330 µH unshielded inductor manufactured by Taiyo Yuden, rated for 440 mA with a maximum DC resistance of 970mOhm. This through-hole radial component operates across a temperature range of -25°C to 105°C and is designed for applications requiring fixed inductance in compact form factors.

The LHL08TB331KSS is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain reliability, and support ongoing production or repair requirements for systems utilizing this component.

Substiute Parts

LHL08TB331KSS

Taiyo YudenIn Stock: 851LHL08TB331KSS Datasheet

Current PartRFQ

RLB0914-331KL

Bourns Inc.In Stock: 1485RLB0914-331KL Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LHL08TB331KSS is determined by the following critical parameters:

Primary Matching Criteria:

• Inductance value: 330 µH (±10% tolerance)
• Inductance test frequency: 796 kHz
• Core material: Ferrite
• Shielding configuration: Unshielded
• Mounting type: Through hole
• Package configuration: Radial, vertical cylinder

Secondary Compatibility Criteria:

• Current rating must equal or exceed 440 mA
• DC resistance must not exceed 970mOhm
• Operating temperature range must encompass -25°C to 105°C
• RoHS3 compliance required

The RLB0914-331KL from Bourns Inc. satisfies all primary matching criteria and exceeds secondary compatibility requirements, making it a direct functional substitute for the obsolete LHL08TB331KSS.

Parameter Comparison

Engineering Selection Recommendations

The RLB0914-331KL is the qualified substitute for the obsolete LHL08TB331KSS based on the following engineering factors:

Functional Equivalence: Both components share identical inductance values (330 µH), tolerance specifications (±10%), core materials (ferrite), and package configurations (radial, vertical cylinder through-hole). Both are tested at 796 kHz and maintain unshielded construction.

Performance Enhancement: The RLB0914-331KL provides superior current handling capacity (740 mA versus 440 mA) and lower DC resistance (760 mOhm versus 970 mOhm), resulting in reduced power dissipation and improved thermal performance in the application circuit.

Compliance and Availability: The RLB0914-331KL holds active product status with ROHS3 compliance and REACH unaffected designation, ensuring long-term supply chain stability and regulatory compliance. The LHL08TB331KSS, classified as obsolete, presents supply constraints and potential regulatory discontinuation risks.

Temperature Performance: The substitute component extends the lower operating temperature limit to -40°C, providing broader environmental operating capability compared to the original -25°C minimum.

Physical Considerations: The RLB0914-331KL exhibits slightly smaller diameter (8.70 mm versus 9.00 mm) but greater height (13.00 mm versus 9.50 mm). PCB layout verification is required to confirm mechanical fit within the application's spatial constraints.

Frequently Asked Questions (FAQ)

Q: Can the RLB0914-331KL directly replace the LHL08TB331KSS in existing designs?

A: The RLB0914-331KL is functionally equivalent for inductance value, tolerance, core material, and package type. Physical dimensions differ slightly; the substitute is narrower but taller. PCB layout and component clearance must be verified before implementation.

Q: What are the key differences between these two inductors?

A: Both components provide 330 µH inductance with ±10% tolerance in ferrite core, unshielded, through-hole radial packages. The RLB0914-331KL offers higher current rating (740 mA versus 440 mA), lower DC resistance (760 mOhm versus 970 mOhm), and extended lower temperature limit (-40°C versus -25°C). The LHL08TB331KSS exhibits higher Q factor (25 versus 20) and higher self-resonant frequency (3.2 MHz versus 2 MHz).

Q: Why is the LHL08TB331KSS classified as obsolete?

A: The LHL08TB331KSS is listed as obsolete by Taiyo Yuden, indicating discontinued production and end-of-life status. This classification necessitates identification of active substitute components to maintain design continuity and ensure supply availability.

Q: Are both components RoHS compliant?

A: Yes. Both the LHL08TB331KSS and RLB0914-331KL are ROHS3 compliant, meeting current environmental and regulatory requirements for electronic component manufacturing and use.

Q: What is the impact of the lower Q factor in the substitute component?

A: The RLB0914-331KL exhibits a Q factor of 20 at 796 kHz compared to 25 for the LHL08TB331KSS. This represents a 20% reduction in quality factor. Applications sensitive to inductor losses or operating near resonant frequencies require circuit analysis to confirm acceptable performance with the substitute component.

Q: Does the lower self-resonant frequency of the RLB0914-331KL affect circuit operation?

A: The RLB0914-331KL has a self-resonant frequency of 2 MHz compared to 3.2 MHz for the original component. Applications operating at frequencies approaching or exceeding 2 MHz require verification that the substitute's resonant characteristics do not introduce unintended impedance effects or circuit instability.

Q: What are the packaging differences between these inductors?

A: Both components use through-hole radial, vertical cylinder packages. The RLB0914-331KL has a smaller diameter (8.70 mm versus 9.00 mm) but greater height (13.00 mm versus 9.50 mm). Component spacing and clearance on the PCB must be evaluated for the taller substitute.

Q: Is the RLB0914-331KL available in higher quantities?

A: The RLB0914-331KL is listed as active product status with 1,474 pieces in stock, compared to 790 pieces for the obsolete LHL08TB331KSS. Active product status indicates ongoing manufacturing and supply availability.