1008HC-682EJFS Equivalent & Substitute Parts Reference

Part Overview

The 1008HC-682EJFS is a 6.8 µH unshielded drum core wirewound inductor manufactured by Delta Electronics/Components, rated for 400 mA with 1 Ohm DC resistance in a 1008 (2520 Metric) surface mount package. This component is classified as obsolete, necessitating identification of active equivalent alternatives for ongoing production and design requirements. Substitute parts must maintain the same inductance value, package footprint, and core material while accommodating variations in current rating and DC resistance within acceptable application parameters.

Substiute Parts

1008HC-682EJFS

Delta Electronics/ComponentsIn Stock: 9541008HC-682EJFS Datasheet

Current PartRFQ

744758368A

Würth ElektronikIn Stock: 1457744758368A Datasheet

SimilarRFQ

744762368A

Würth ElektronikIn Stock: 1951744762368A Datasheet

SimilarRFQ

NLV25T-6R8J-EF

TDK CorporationIn Stock: 5696NLV25T-6R8J-EF Datasheet

SimilarRFQ

NLV25T-6R8J-EFD

TDK CorporationIn Stock: 903NLV25T-6R8J-EFD Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 1008HC-682EJFS is determined by the following mandatory criteria:

Fixed Parameters (Must Match):

• Inductance: 6.8 µH
• Inductance Tolerance: ±5%
• Core Material: Ferrite
• Shielding: Unshielded
• Package / Case: 1008 (2520 Metric)
• Mounting Type: Surface Mount
• Test Frequency: 7.96 MHz

Variable Parameters (Acceptable Variation):

• Current Rating: Substitute must support minimum 165 mA; original part rated 400 mA
• DC Resistance: Substitute DCR may exceed 1 Ohm; original part rated 1 Ohm
• Operating Temperature: Substitute range may extend beyond -40°C ~ 85°C
• Product Status: Active substitutes preferred over obsolete original

All four identified substitute parts meet the fixed parameter requirements. Substitution suitability depends on application current requirements and thermal performance needs.

Parameter Comparison

Engineering Selection Recommendations

744758368A (Würth Elektronik WE-RFH Series)

This substitute is suitable for applications requiring current ratings up to 360 mA. The 2 Ohm maximum DC resistance represents a 100% increase over the original part. Active product status and ROHS3 compliance support long-term availability. Select this part when application current does not exceed 360 mA and increased DC resistance is acceptable for thermal budget calculations.

744762368A (Würth Elektronik WE-RFI Series)

This substitute is suitable for applications requiring current ratings up to 165 mA. The 2.8 Ohm maximum DC resistance and lower current rating indicate this part is optimized for lower-power circuits. Active product status and ROHS3 compliance ensure supply continuity. Select this part only when application current requirements do not exceed 165 mA.

NLV25T-6R8J-EF (TDK Corporation NLV-EF Series)

This substitute supports current ratings up to 165 mA with 2.7 Ohm maximum DC resistance. Extended operating temperature range (-40°C ~ 105°C) provides thermal margin beyond the original part. Active product status and ROHS3 compliance are confirmed. Select this part for applications requiring extended temperature performance and current ratings up to 165 mA.

NLV25T-6R8J-EFD (TDK Corporation NLV-EFD Series)

This substitute supports current ratings up to 165 mA with 2.7 Ohm maximum DC resistance and includes AEC-Q200 automotive qualification. Extended operating temperature range (-40°C ~ 105°C) and automotive-grade reliability certification distinguish this part. Select this part for automotive applications or designs requiring AEC-Q200 compliance with current ratings up to 165 mA.

Frequently Asked Questions (FAQ)

Q: Can 744758368A replace 1008HC-682EJFS in all applications?

A: 744758368A is a direct substitute only for applications where circuit current does not exceed 360 mA. The original part is rated 400 mA; this substitute provides 90% of that rating. DC resistance increases from 1 Ohm to 2 Ohm maximum, requiring thermal verification in power-sensitive designs.

Q: What is the difference between the two Würth Elektronik substitutes?

A: 744758368A (WE-RFH) supports 360 mA with 2 Ohm DCR. 744762368A (WE-RFI) supports only 165 mA with 2.8 Ohm DCR. Select 744758368A for higher current applications; select 744762368A only when circuit current is limited to 165 mA or below.

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

A: The NLV25T-6R8J-EF and NLV25T-6R8J-EFD are rated 165 mA maximum. These parts are suitable only for applications where circuit current does not exceed 165 mA. If your application requires the full 400 mA rating of the original part, use 744758368A (360 mA) as the closest alternative.

Q: What is AEC-Q200 and why does NLV25T-6R8J-EFD have it?

A: AEC-Q200 is an automotive industry qualification standard for passive components. NLV25T-6R8J-EFD carries this certification, making it suitable for automotive applications. If your design is not automotive-qualified, NLV25T-6R8J-EF provides equivalent electrical performance without automotive certification.

Q: Are all substitutes physically compatible with the original PCB footprint?

A: All substitutes use the 1008 (2520 Metric) package. However, physical dimensions vary: the original part is 2.92 x 2.79 mm with 2.10 mm height; substitutes are 2.50-2.60 x 2.00-2.10 mm with 1.90 mm height. Substitutes are smaller and will fit the original footprint with clearance margin. Verify PCB layout constraints for height-sensitive applications.

Q: Which substitute has the best high-frequency performance?

A: NLV25T-6R8J-EF and NLV25T-6R8J-EFD both have Q factor of 25 @ 7.96 MHz, compared to 22 for the original part. 744758368A and 744762368A have Q factor of 20. For high-frequency applications, TDK parts provide superior Q performance.

Q: Can I use these substitutes interchangeably?

A: No. Substitution depends on application current requirements. For circuits drawing up to 165 mA, all four substitutes are eligible. For circuits drawing 165-360 mA, only 744758368A is suitable. For circuits drawing 360-400 mA, no direct substitute exists; design modification is required.

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

A: Increased DC resistance causes higher power dissipation and voltage drop across the inductor. Original part: 1 Ohm. Substitutes: 2.0-2.8 Ohm. At 165 mA, power dissipation increases from 27.2 mW (original) to 54.5-74.8 mW (substitutes). Verify thermal budget and circuit performance tolerance before substitution.