1008HS-102EKFS Equivalent & Substitute Parts Reference

Part Overview

The 1008HS-102EKFS is a 1 µH unshielded drum core wirewound inductor manufactured by Delta Electronics/Components, rated for 600 mA continuous current with 500 mOhm DC resistance in a 1008 (2520 Metric) surface mount package. This part is classified as obsolete, necessitating identification of active equivalent alternatives that maintain functional compatibility for new designs and production continuity.

Substiute Parts

1008HS-102EKFS

Delta Electronics/ComponentsIn Stock: 8201008HS-102EKFS Datasheet

Current PartRFQ

CW252016-1R0J

Bourns Inc.In Stock: 3944CW252016-1R0J Datasheet

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NLV25T-1R0J-EF

TDK CorporationIn Stock: 5507NLV25T-1R0J-EF Datasheet

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NLV25T-1R0J-EFD

TDK CorporationIn Stock: 1759NLV25T-1R0J-EFD Datasheet

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PM1008-1R0K-RC

Bourns Inc.In Stock: 4052PM1008-1R0K-RC Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 1008HS-102EKFS is determined by the following critical parameters:

Primary Matching Criteria:

• Inductance value: 1 µH (exact match required)
• Package / Case: 1008 (2520 Metric) (exact match required)
• Mounting Type: Surface Mount (exact match required)
• Core Material: Ferrite (exact match required)
• Shielding: Unshielded (exact match required)

Secondary Compatibility Parameters:

• Current Rating: Must equal or exceed 600 mA
• DC Resistance: Lower values preferred for reduced power dissipation
• Operating Temperature Range: Must encompass -40°C to 85°C minimum
• RoHS Compliance: ROHS3 Compliant required

All four substitute parts (CW252016-1R0J, NLV25T-1R0J-EF, NLV25T-1R0J-EFD, PM1008-1R0K-RC) meet the primary matching criteria. However, all substitute parts have current ratings below the original 600 mA specification, requiring circuit-level evaluation for applications demanding the full original current capacity.

Parameter Comparison

Engineering Selection Recommendations

For Active Production Designs:

The NLV25T-1R0J-EFD from TDK Corporation is the preferred substitute when automotive-grade reliability is required. This part carries AEC-Q200 qualification, operates across -40°C to 105°C, and maintains ROHS3 compliance with REACH affected status. The ±5% inductance tolerance provides tighter specification control compared to the original ±10% tolerance.

For General Commercial Applications:

The CW252016-1R0J and PM1008-1R0K-RC from Bourns Inc. are functionally equivalent alternatives. Both support extended operating temperatures to 125°C, exceed the minimum temperature range requirement, and maintain ROHS3 compliance with REACH unaffected status. The CW252016-1R0J offers ±5% tolerance; the PM1008-1R0K-RC matches the original ±10% tolerance.

For Temperature-Constrained Applications:

The NLV25T-1R0J-EF from TDK Corporation operates to 105°C and provides ±5% tolerance specification. REACH affected status applies to this variant.

Critical Design Consideration:

All substitute parts have current ratings (245–330 mA) below the original 600 mA specification. Applications requiring the full 600 mA current capacity must be re-evaluated. The substitute parts exhibit higher DC resistance (1.1–1.75 Ohm) compared to the original 500 mOhm, resulting in increased power dissipation at equivalent current levels.

Frequently Asked Questions (FAQ)

Q: Can the 1008HS-102EKFS be directly replaced with any of these substitute parts?

A: Direct replacement is possible only if the circuit design does not require the full 600 mA current capacity of the original part. All substitutes are rated for 245–330 mA maximum. Circuit analysis is required to confirm compatibility with actual operating current levels.

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

A: The substitute parts exhibit DC resistance values of 1.1–1.75 Ohm compared to the original 500 mOhm. At equivalent current levels, power dissipation increases proportionally. For example, at 300 mA, the original part dissipates 45 mW while substitutes dissipate 330–525 mW. Thermal management and circuit performance must be re-evaluated.

Q: Are all substitute parts suitable for automotive applications?

A: Only the NLV25T-1R0J-EFD carries AEC-Q200 qualification for automotive use. The other three substitutes lack automotive-grade certification and should not be used in automotive applications without additional qualification.

Q: Do the substitute parts maintain the same package footprint?

A: All substitute parts use the 1008 (2520 Metric) package. Physical dimensions vary slightly: the original part measures 0.115" L × 0.110" W × 0.083" H; substitutes measure 0.098" L × 0.079" W with heights of 0.071"–0.075". PCB layout compatibility should be verified, though the smaller footprint of substitutes typically presents no placement issues.

Q: What is the difference between NLV25T-1R0J-EF and NLV25T-1R0J-EFD?

A: Both parts are electrically identical with 1 µH inductance, 245 mA current rating, and 1.1 Ohm maximum DC resistance. The primary difference is that NLV25T-1R0J-EFD carries AEC-Q200 automotive qualification while NLV25T-1R0J-EF does not. The EFD variant is preferred for automotive and safety-critical applications.

Q: Are these parts available in quantities sufficient for production?

A: Current inventory levels are: CW252016-1R0J (3,899 pcs), NLV25T-1R0J-EF (5,433 pcs), NLV25T-1R0J-EFD (1,658 pcs), and PM1008-1R0K-RC (3,961 pcs). All substitutes are in active production status with established supply chains.

Q: What compliance certifications apply to each substitute?

A: All four substitutes are ROHS3 compliant. CW252016-1R0J and PM1008-1R0K-RC have REACH unaffected status. NLV25T-1R0J-EF and NLV25T-1R0J-EFD have REACH affected status. The NLV25T-1R0J-EFD additionally carries AEC-Q200 automotive qualification.