1008HC-333EKFS Equivalent & Substitute Parts Reference

Part Overview

The 1008HC-333EKFS is a 33 µH unshielded drum core wirewound inductor manufactured by Delta Electronics/Components, rated for 180 mA continuous current with 3.5Ω DC resistance. This surface mount component is designed for applications requiring fixed inductance in compact 1008 (2520 Metric) package format.

The 1008HC-333EKFS carries an Obsolete product status. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications utilizing this inductor specification.

Substiute Parts

1008HC-333EKFS

Delta Electronics/ComponentsIn Stock: 12481008HC-333EKFS Datasheet

Current PartRFQ

NLCV25T-330K-EF

TDK CorporationIn Stock: 1080NLCV25T-330K-EF Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 1008HC-333EKFS are identified based on the following critical parameters that determine functional equivalence:

Primary Matching Criteria:

• Inductance value: 33 µH (±10% tolerance band)
• Package / Case: 1008 (2520 Metric) surface mount
• Core material: Ferrite drum core, unshielded configuration
• Inductance test frequency: 2.52 MHz

Secondary Compatibility Factors:

• Current rating: Substitute must support minimum 180 mA continuous operation
• DC resistance: Acceptable range determined by circuit design requirements
• Operating temperature: Minimum -40°C to 85°C overlap required
• Compliance: RoHS3 and REACH status alignment

The NLCV25T-330K-EF from TDK Corporation meets the primary matching criteria and maintains functional compatibility within the specified parameter envelope.

Parameter Comparison

Engineering Selection Recommendations

Substitution Feasibility:

The NLCV25T-330K-EF is a functional equivalent for the 1008HC-333EKFS in applications where the current requirement does not exceed 120 mA. Both components share identical inductance values, tolerance specifications, core material, package format, and self-resonant frequency characteristics.

Key Considerations:

1. Current Rating Differential: The 1008HC-333EKFS supports 180 mA continuous current, while the NLCV25T-330K-EF is rated for 120 mA. Circuit designs operating above 120 mA require the original part or alternative sources with higher current ratings.

2. DC Resistance Variance: The NLCV25T-330K-EF exhibits higher DC resistance (5.46Ω maximum) compared to the 1008HC-333EKFS (3.5Ω). This difference affects power dissipation and thermal performance. Applications sensitive to resistive losses require evaluation of this parameter.

3. Product Status and Supply: The 1008HC-333EKFS is obsolete, while the NLCV25T-330K-EF maintains active production status. The TDK component offers superior long-term availability and supply chain reliability.

4. Compliance Alignment: Both components maintain ROHS3 compliance, REACH unaffected status, and MSL 1 moisture sensitivity rating, ensuring regulatory and environmental compatibility.

5. Physical Dimensions: The NLCV25T-330K-EF exhibits slightly smaller physical dimensions and lower seated height, providing potential PCB layout advantages in space-constrained applications.

6. Temperature Operating Range: The NLCV25T-330K-EF supports extended upper temperature operation to 105°C, compared to 85°C for the original part, offering thermal margin in elevated-temperature environments.

Frequently Asked Questions (FAQ)

Q: Can the NLCV25T-330K-EF directly replace the 1008HC-333EKFS in all applications?

A: Direct substitution is valid only for applications where continuous current does not exceed 120 mA. Applications requiring the full 180 mA rating of the original part require alternative sourcing or design modification.

Q: What impact does the higher DC resistance of the NLCV25T-330K-EF have on circuit performance?

A: The NLCV25T-330K-EF exhibits 5.46Ω maximum DC resistance versus 3.5Ω for the 1008HC-333EKFS. This increases resistive power dissipation proportionally to the square of the operating current. Circuit designs with tight power budgets or thermal constraints require detailed analysis of this parameter.

Q: Are the physical dimensions of the NLCV25T-330K-EF compatible with PCB layouts designed for the 1008HC-333EKFS?

A: Both components use the 1008 (2520 Metric) package format and surface mount configuration. The NLCV25T-330K-EF exhibits smaller footprint dimensions (2.50mm x 2.00mm versus 2.92mm x 2.79mm) and lower seated height (1.90mm versus 2.10mm). PCB layouts designed for the original part accommodate the substitute without modification, though the smaller footprint may provide additional routing flexibility.

Q: What is the significance of the Q factor difference between these components?

A: The NLCV25T-330K-EF exhibits Q of 30 at 2.52 MHz, compared to Q of 20 for the 1008HC-333EKFS. Higher Q indicates lower losses at the test frequency. This difference reflects manufacturing variations and core material characteristics but does not affect basic inductance equivalence for most applications.

Q: Are there compliance or regulatory differences between these parts?

A: Both components maintain identical RoHS3 compliance, REACH unaffected status, and MSL 1 moisture sensitivity ratings. No regulatory or compliance barriers exist to substitution from an environmental or safety perspective.

Q: Why is the 1008HC-333EKFS marked as obsolete?

A: Obsolete status indicates the manufacturer has discontinued production. The NLCV25T-330K-EF, maintained in active production by TDK, provides a path to continued supply for equivalent inductance requirements.