1008HS-331EJFS Equivalent & Substitute Parts

Part Overview

The 1008HS-331EJFS is a 330 nH unshielded drum core wirewound inductor manufactured by Delta Electronics/Components, rated for 1.1 A continuous current with 200 mOhm DC resistance. This surface mount component is housed in a 1008 (2520 Metric) package and operates across the temperature range of -40°C to 85°C.

The 1008HS-331EJFS is classified as obsolete. Substitute parts are necessary to maintain design continuity and ensure component availability for new production runs and field replacements. The identified substitute inductors maintain the core electrical specifications while offering active product status and extended availability.

Substiute Parts

1008HS-331EJFS

Delta Electronics/ComponentsIn Stock: 8171008HS-331EJFS Datasheet

Current PartRFQ

NLV25T-R33J-EF

TDK CorporationIn Stock: 14753NLV25T-R33J-EF Datasheet

SimilarRFQ

NLV25T-R33J-EFD

TDK CorporationIn Stock: 1945NLV25T-R33J-EFD Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 1008HS-331EJFS is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Inductance value: 330 nH
• Inductance tolerance: ±5%
• Core type: Ferrite drum core, unshielded
• Package / Case: 1008 (2520 Metric)
• Mounting type: Surface mount
• Q factor @ 25.2 MHz: 30
• Self resonant frequency: 400 MHz
• Inductance test frequency: 25.2 MHz

Allowable Variations:

• Current rating: Substitute parts may have lower current ratings (400 mA vs. 1.1 A) provided the application does not exceed the substitute's current specification
• DC resistance: Substitute parts may have higher DCR (600 mOhm Max vs. 200 mOhm) provided circuit performance tolerates increased losses
• Operating temperature range: Substitute parts may have extended upper temperature limits (-40°C to 105°C vs. -40°C to 85°C)
• Product status: Active substitutes are preferred over obsolete parts
• Compliance certifications: Additional certifications (AEC-Q200) are acceptable enhancements

The identified substitutes NLV25T-R33J-EF and NLV25T-R33J-EFD meet all mandatory matching parameters and are manufactured by TDK Corporation.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: NLV25T-R33J-EFD

The NLV25T-R33J-EFD is the preferred substitute for the obsolete 1008HS-331EJFS. This TDK Corporation inductor maintains all critical electrical and mechanical specifications while offering active product status and extended availability. The NLV25T-R33J-EFD carries AEC-Q200 automotive qualification, providing additional reliability assurance for applications requiring automotive-grade components.

Secondary Substitute: NLV25T-R33J-EF

The NLV25T-R33J-EF is an alternative substitute offering identical electrical performance and package compatibility. This variant is also manufactured by TDK Corporation with active product status. The NLV25T-R33J-EF lacks AEC-Q200 certification but remains suitable for non-automotive applications.

Selection Criteria:

Both substitutes operate at reduced current ratings (400 mA) compared to the original part (1.1 A). Component selection must verify that circuit current requirements do not exceed 400 mA. Both substitutes exhibit higher DC resistance (600 mOhm Max) compared to the original specification (200 mOhm). Circuit designs sensitive to inductor losses must evaluate the impact of increased DCR on overall system performance.

Both substitutes support extended operating temperature ranges (-40°C to 105°C) compared to the original part (-40°C to 85°C), providing thermal margin for high-temperature applications.

Frequently Asked Questions (FAQ)

Q: Can the NLV25T-R33J-EF or NLV25T-R33J-EFD be used as direct replacements for the 1008HS-331EJFS?

A: Both TDK inductors are direct substitutes for the Delta 1008HS-331EJFS in applications where circuit current does not exceed 400 mA. The inductance value, tolerance, core type, package, and mounting type are identical. Applications requiring the original 1.1 A current rating must use an alternative component.

Q: What is the impact of the higher DC resistance in the substitute parts?

A: The substitute parts exhibit 600 mOhm maximum DC resistance compared to the original 200 mOhm specification. This represents a 3x increase in series resistance. In RF and high-frequency circuits, increased DCR reduces Q factor and increases insertion loss. Circuit designers must evaluate whether the 3x DCR increase is acceptable for the intended application.

Q: Are the substitute parts available in the same package dimensions?

A: Both substitute parts use the 1008 (2520 Metric) package. However, physical dimensions differ slightly. The original part measures 0.115" L x 0.110" W x 0.083" H (2.92mm x 2.79mm x 2.10mm). The substitute parts measure 0.098" L x 0.079" W x 0.075" H (2.50mm x 2.00mm x 1.90mm). These dimensional differences may affect PCB layout and component placement in space-constrained designs.

Q: What is the difference between NLV25T-R33J-EF and NLV25T-R33J-EFD?

A: Both parts are electrically and mechanically identical. The primary difference is that NLV25T-R33J-EFD carries AEC-Q200 automotive qualification, while NLV25T-R33J-EF does not. For automotive applications or designs requiring automotive-grade reliability, NLV25T-R33J-EFD is the appropriate selection.

Q: Do the substitute parts support the same operating temperature range?

A: The substitute parts support an extended operating temperature range of -40°C to 105°C compared to the original part's -40°C to 85°C specification. This extended range provides additional thermal margin and is suitable for high-temperature applications.

Q: Are the substitute parts RoHS compliant?

A: Yes, both NLV25T-R33J-EF and NLV25T-R33J-EFD are ROHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity ratings, matching the compliance profile of the original 1008HS-331EJFS.