1008HC-333EJFS Equivalent & Substitute Parts Reference

Part Overview

The 1008HC-333EJFS 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-333EJFS 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-333EJFS

Delta Electronics/ComponentsIn Stock: 9981008HC-333EJFS Datasheet

Current PartRFQ

NLV25T-330J-EF

TDK CorporationIn Stock: 4612NLV25T-330J-EF Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 1008HC-333EJFS is determined by the following critical parameters:

Mandatory Matching Criteria:

• Inductance value: 33 µH (±5% tolerance)
• Package / Case: 1008 (2520 Metric)
• Core type: Ferrite drum core, unshielded
• Mounting type: Surface mount
• Inductance test frequency: 2.52 MHz

Allowable Parameter Variations: Substitute parts may differ in current rating, DC resistance, operating temperature range, and self-resonant frequency, provided the application circuit design accommodates these variations. The NLV25T-330J-EF from TDK Corporation meets all mandatory matching criteria while operating within compatible electrical and thermal specifications.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: NLV25T-330J-EF (TDK Corporation)

The NLV25T-330J-EF is the qualified equivalent for the obsolete 1008HC-333EJFS. Both components share identical inductance specifications, package format, and core construction. The TDK part carries active product status, ensuring long-term supply availability and manufacturing continuity.

Compliance and Certification Alignment: Both parts maintain ROHS3 compliance and MSL Level 1 (unlimited moisture sensitivity). The NLV25T-330J-EF extends the operating temperature range to 105°C, providing enhanced thermal margin for applications operating at elevated ambient conditions.

Circuit Design Considerations: Applications must account for the reduced current rating of the NLV25T-330J-EF (110 mA versus 180 mA) and increased DC resistance (7.1Ω maximum versus 3.5Ω). Circuit designs operating at or near the 180 mA specification of the original part require verification that the substitute part's 110 mA rating remains within acceptable operating margins. The higher DCR will increase power dissipation proportionally to the square of the operating current.

Frequently Asked Questions (FAQ)

Q: Can the NLV25T-330J-EF directly replace the 1008HC-333EJFS in all applications?

A: Direct replacement is possible for applications operating at currents below 110 mA. Applications requiring the full 180 mA rating of the original part must be re-evaluated. The increased DC resistance of the substitute part will result in higher power dissipation and voltage drop across the inductor.

Q: What is the physical size difference between these parts?

A: Both parts use the 1008 (2520 Metric) package. The 1008HC-333EJFS measures 0.115" L × 0.110" W × 0.083" H maximum. The NLV25T-330J-EF measures 0.098" L × 0.079" W × 0.075" H maximum. The TDK part is physically smaller and will fit within the same PCB footprint.

Q: Are there differences in inductance frequency testing?

A: Both parts are tested at 2.52 MHz. The NLV25T-330J-EF exhibits a higher self-resonant frequency (20 MHz versus 16 MHz) and superior Q factor (25 versus 20 at 2.52 MHz), indicating lower losses at the test frequency.

Q: What packaging formats are available for the NLV25T-330J-EF?

A: The NLV25T-330J-EF is supplied in Tape & Reel (TR) format. The 1008HC-333EJFS packaging format is not specified in the provided data.

Q: Are both parts RoHS compliant?

A: Both the 1008HC-333EJFS and NLV25T-330J-EF are ROHS3 compliant. The NLV25T-330J-EF is REACH Affected, while the 1008HC-333EJFS is REACH Unaffected. Applications subject to REACH regulations should confirm compliance requirements with the TDK part.