1008HC-822EKFS Equivalent & Substitute Parts Reference

Part Overview

The 1008HC-822EKFS is an 8.2 µH unshielded drum core wirewound inductor manufactured by Delta Electronics/Components, rated for 350 mA with 1.3Ohm DC resistance in a 1008 (2520 Metric) surface mount package. This component is classified as obsolete, necessitating identification of active equivalent alternatives that maintain electrical and mechanical compatibility for ongoing production and repair applications.

Substiute Parts

1008HC-822EKFS

Delta Electronics/ComponentsIn Stock: 7891008HC-822EKFS Datasheet

Current PartRFQ

744758382A

Würth ElektronikIn Stock: 1305744758382A Datasheet

DirectRFQ

NLV25T-8R2J-EF

TDK CorporationIn Stock: 1860NLV25T-8R2J-EF Datasheet

SimilarRFQ

NLV25T-8R2J-EFD

TDK CorporationIn Stock: 5810NLV25T-8R2J-EFD Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 1008HC-822EKFS is determined by the following critical parameters:

Primary Matching Criteria:

• Inductance value: 8.2 µH (exact match required)
• Package/Case: 1008 (2520 Metric) surface mount (exact match required)
• Core material: Ferrite, unshielded drum core (exact match required)
• Operating temperature range: Minimum -40°C ~ 85°C coverage required

Secondary Compatibility Parameters:

• Current rating: Substitute must equal or exceed 350 mA
• DC resistance: Lower or equal values preferred; higher values acceptable if circuit design permits
• Tolerance: ±5% or ±10% acceptable
• RoHS3 compliance: Required for regulatory alignment

Substitute parts are grouped into two categories based on current rating capability relative to the original specification.

Parameter Comparison

Engineering Selection Recommendations

744758382A (Würth Elektronik WE-RFH Series)

This substitute provides the closest electrical performance match to the 1008HC-822EKFS. The current rating of 320 mA represents a 91% retention of the original 350 mA specification, suitable for applications where the design margin accommodates this reduction. The increased DC resistance of 2.6Ohm (versus 1.3Ohm) results in proportionally higher power dissipation and must be evaluated against thermal design constraints. The part maintains identical package dimensions, operating temperature range, and RoHS3 compliance. Active product status ensures long-term availability and supply chain stability.

NLV25T-8R2J-EF and NLV25T-8R2J-EFD (TDK Corporation NLV Series)

Both TDK variants are electrically identical with 160 mA current rating and 3.05Ohm maximum DC resistance. These parts are suitable only for applications where the circuit design operates at significantly reduced current levels or where the higher DCR is acceptable. The extended operating temperature range (-40°C ~ 105°C) provides additional thermal margin. NLV25T-8R2J-EFD includes AEC-Q200 automotive qualification, appropriate for automotive and high-reliability applications. Both maintain 1008 package compatibility and ROHS3 compliance. The NLV25T-8R2J-EFD variant offers superior inventory availability (5721 units) and is recommended for new designs requiring automotive-grade components.

Selection Priority:

1. 744758382A for direct replacement in existing designs with minimal circuit modification
2. NLV25T-8R2J-EFD for new designs, automotive applications, or where AEC-Q200 qualification is required
3. NLV25T-8R2J-EF as secondary option when NLV25T-8R2J-EFD is unavailable

Frequently Asked Questions (FAQ)

Q: Can the 744758382A directly replace the 1008HC-822EKFS without circuit modification?

A: The 744758382A is mechanically and electrically compatible for most applications. The 30 mA current rating reduction (320 mA vs. 350 mA) requires verification that the circuit operates below 320 mA. The doubled DC resistance (2.6Ohm vs. 1.3Ohm) increases power dissipation by approximately 3 mW at rated current; thermal impact must be assessed for high-temperature environments.

Q: Why do the TDK NLV parts have lower current ratings?

A: The NLV25T-8R2J-EF and NLV25T-8R2J-EFD are designed for lower current applications and represent a different product line within the 8.2 µH 1008 package category. These parts are suitable only when circuit current requirements are 160 mA or below.

Q: What is the difference between NLV25T-8R2J-EF and NLV25T-8R2J-EFD?

A: Both parts are electrically identical with matching inductance, tolerance, current rating, and DC resistance. The NLV25T-8R2J-EFD includes AEC-Q200 automotive qualification and is recommended for automotive, medical, and high-reliability applications. Inventory availability is significantly higher for the EFD variant (5721 units vs. 1763 units).

Q: Are all substitute parts RoHS3 compliant?

A: Yes. The 1008HC-822EKFS and all three substitute parts (744758382A, NLV25T-8R2J-EF, NLV25T-8R2J-EFD) are ROHS3 compliant, ensuring regulatory alignment for EU and equivalent markets.

Q: Can I use these substitutes in applications requiring the full 350 mA rating?

A: The 744758382A supports 320 mA and may be used in applications with design margins accommodating this 30 mA reduction. The TDK NLV parts rated at 160 mA are not suitable for 350 mA applications and will saturate at higher currents, causing inductor failure.

Q: What is the impact of increased DC resistance on circuit performance?

A: Higher DC resistance increases I²R power dissipation. At 350 mA, the 1008HC-822EKFS dissipates 0.159 W; the 744758382A dissipates 0.292 W; the TDK NLV parts dissipate 0.074 W at their 160 mA rating. Circuit thermal design and PCB copper area must accommodate this increased dissipation.

Q: Are the physical dimensions identical across all parts?

A: All parts use the 1008 (2520 Metric) package. The 1008HC-822EKFS measures 0.115" L × 0.110" W × 0.083" H max. The 744758382A measures 0.102" L × 0.083" W × 0.075" H max. The TDK NLV parts measure 0.098" L × 0.079" W × 0.075" H max. While all fit the 1008 footprint, the smaller physical dimensions of substitute parts may provide additional PCB layout flexibility.