1008HS-392EKFS Equivalent & Substitute Parts

Part Overview

The 1008HS-392EKFS is a 3.9 µH unshielded drum core wirewound inductor manufactured by Delta Electronics/Components, designed for surface mount applications in the 1008 (2520 Metric) package. This component operates at 310 mA with a DC resistance of 1.25 Ohm and is rated for -40°C to 85°C operating temperature range.

The 1008HS-392EKFS is classified as obsolete. 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

1008HS-392EKFS

Delta Electronics/ComponentsIn Stock: 11821008HS-392EKFS Datasheet

Current PartRFQ

NLV25T-3R9J-EF

TDK CorporationIn Stock: 2190NLV25T-3R9J-EF Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 1008HS-392EKFS are identified based on the following critical parameters:

Mandatory Matching Criteria:

• Inductance value: 3.9 µH
• Package / Case: 1008 (2520 Metric)
• Core type: Drum core, wirewound, ferrite
• Shielding configuration: Unshielded
• Mounting type: Surface mount

Allowable Parameter Variations:

• Current rating may be lower than the original part, provided the substitute meets the application's maximum current requirement
• DC resistance may vary within acceptable limits for the application
• Operating temperature range may be extended
• Tolerance specifications may differ
• RoHS and regulatory compliance status may differ

The NLV25T-3R9J-EF from TDK Corporation meets the mandatory matching criteria and is classified as an active product, providing improved supply availability compared to the obsolete 1008HS-392EKFS.

Parameter Comparison

Engineering Selection Recommendations

Substitution Feasibility:

The NLV25T-3R9J-EF is a direct substitute for the 1008HS-392EKFS when the application current requirement does not exceed 180 mA. Both components share identical inductance values, package dimensions within the 1008 (2520 Metric) specification, and ferrite drum core construction.

Key Considerations:

1. Current Rating Limitation: The NLV25T-3R9J-EF has a maximum current rating of 180 mA, compared to 310 mA for the original part. Substitution is valid only if the application operates at or below 180 mA.

2. DC Resistance: The substitute part exhibits higher DC resistance (2.1 Ohm Max versus 1.25 Ohm). This parameter difference must be evaluated against circuit performance requirements, particularly in applications sensitive to resistive losses.

3. Product Status: The NLV25T-3R9J-EF is an active product from TDK Corporation, ensuring ongoing availability and supply chain support, whereas the 1008HS-392EKFS is obsolete.

4. Regulatory Compliance: Both components are ROHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity ratings, supporting equivalent handling and storage requirements.

5. Physical Dimensions: The NLV25T-3R9J-EF is physically smaller in length and width, with lower seated height. PCB layout verification is required to confirm mechanical compatibility.

6. Temperature Range: The NLV25T-3R9J-EF supports an extended operating temperature range (-40°C to 105°C) compared to the original part (-40°C to 85°C).

Frequently Asked Questions (FAQ)

Q: Can the NLV25T-3R9J-EF directly replace the 1008HS-392EKFS in all applications?

A: No. The NLV25T-3R9J-EF is suitable only for applications where the circuit current does not exceed 180 mA. If the original design requires the full 310 mA current capability, this substitute is not appropriate.

Q: What is the impact of the higher DC resistance in the NLV25T-3R9J-EF?

A: The NLV25T-3R9J-EF has a maximum DC resistance of 2.1 Ohm compared to 1.25 Ohm in the original part. This increases resistive losses and heat dissipation. Circuit analysis is required to determine if this parameter change affects performance specifications such as impedance, insertion loss, or thermal management.

Q: Are the physical dimensions compatible?

A: Both components conform to the 1008 (2520 Metric) package specification. However, the NLV25T-3R9J-EF has smaller length and width dimensions (2.50mm x 2.00mm versus 2.92mm x 2.79mm) and lower seated height (1.90mm versus 2.10mm). PCB layout and component placement must be verified to ensure mechanical fit.

Q: What is the difference in inductance tolerance?

A: The NLV25T-3R9J-EF has ±5% tolerance compared to ±10% for the original part. This represents improved tolerance control and may benefit applications requiring tighter inductance specifications.

Q: Are there any regulatory or compliance differences?

A: Both components are ROHS3 compliant and carry identical MSL 1 ratings. No compliance barriers exist for substitution from a regulatory perspective.

Q: Why is the NLV25T-3R9J-EF recommended despite lower current rating?

A: The NLV25T-3R9J-EF is an active product with assured supply availability, whereas the 1008HS-392EKFS is obsolete. For applications operating within the 180 mA current limit, the substitute provides supply chain continuity and long-term availability assurance.