1008HC-562EKFS Equivalent & Substitute Parts

Part Overview

The 1008HC-562EKFS is a 5.6 µH unshielded drum core wirewound inductor manufactured by Delta Electronics/Components, rated for 400 mA continuous current with 1.05Ohm 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 part is classified as obsolete, necessitating identification of active equivalent alternatives that maintain functional compatibility within specified electrical and mechanical parameters.

Key Parameters

Parameter	Value
Inductance	5.6 µH
Current Rating	400 mA
DC Resistance (DCR)	1.05Ohm
Tolerance	±10%
Core Type	Ferrite, Unshielded Drum Core
Mounting Type	Surface Mount
Package / Case	1008 (2520 Metric)
Operating Temperature	-40°C ~ 85°C
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the 1008HC-562EKFS is determined by the following critical parameters:

Mandatory Matching Parameters:

Inductance value: 5.6 µH
Package / Case: 1008 (2520 Metric)
Core type: Ferrite, unshielded drum core
Mounting type: Surface mount
RoHS3 compliance
MSL rating: 1 (Unlimited)

Allowable Variation Parameters:

Current rating: Substitute must equal or exceed 400 mA
DC resistance: Substitute must not exceed 1.05Ohm (lower DCR preferred for reduced losses)
Tolerance: ±5% or ±10% acceptable
Operating temperature: Substitute must cover minimum -40°C ~ 85°C range
Q factor and self-resonant frequency: Variations acceptable within application requirements

The three substitute parts listed below satisfy the mandatory matching criteria while presenting trade-offs in current rating and DC resistance characteristics.

Parameter Comparison

Parameter	1008HC-562EKFS (Main)	744758356A (Würth)	NLV25T-5R6J-EF (TDK)	NLV25T-5R6J-EFD (TDK)
Manufacturer	Delta Electronics	Würth Elektronik	TDK Corporation	TDK Corporation
Product Status	Obsolete	Active	Active	Active
Inductance	5.6 µH	5.6 µH	5.6 µH	5.6 µH
Tolerance	±10%	±5%	±5%	±5%
Current Rating (Amps)	400 mA	370 mA	170 mA	170 mA
DC Resistance (DCR)	1.05Ohm	1.8Ohm Max	2.5Ohm Max	2.5Ohm Max
Q @ Freq	22 @ 7.96MHz	20 @ 7.96MHz	25 @ 7.96MHz	25 @ 7.96MHz
Frequency - Self Resonant	42MHz	80MHz	42MHz	42MHz
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 105°C	-40°C ~ 105°C
Package / Case	1008 (2520 Metric)	1008 (2520 Metric)	1008 (2520 Metric)	1008 (2520 Metric)
Size / Dimension	0.115" L x 0.110" W (2.92mm x 2.79mm)	0.102" L x 0.083" W (2.60mm x 2.10mm)	0.098" L x 0.079" W (2.50mm x 2.00mm)	0.098" L x 0.079" W (2.50mm x 2.00mm)
Height - Seated (Max)	0.083" (2.10mm)	0.075" (1.90mm)	0.075" (1.90mm)	0.075" (1.90mm)
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected	REACH Affected	REACH Affected
Ratings	-	-	-	AEC-Q200

Engineering Selection Recommendations

744758356A (Würth Elektronik WE-RFH Series)

This substitute is an active product with ROHS3 compliance and REACH unaffected status. The 744758356A maintains the same 5.6 µH inductance and 1008 package footprint. Current rating is 370 mA, which represents a 7.5% reduction from the original 400 mA specification. DC resistance is 1.8Ohm maximum, representing a 71% increase over the original 1.05Ohm. This part is suitable for applications where current requirements do not exceed 370 mA and where the elevated DC resistance is acceptable for the circuit function.

NLV25T-5R6J-EF (TDK Corporation NLV-EF Series)

This substitute is an active product with ROHS3 compliance and REACH affected status. The NLV25T-5R6J-EF maintains the same 5.6 µH inductance and 1008 package footprint. Current rating is 170 mA, representing a 57.5% reduction from the original 400 mA specification. DC resistance is 2.5Ohm maximum, representing a 138% increase over the original 1.05Ohm. Operating temperature range extends to 105°C. This part is suitable only for applications with current requirements not exceeding 170 mA.

NLV25T-5R6J-EFD (TDK Corporation NLV-EFD Series)

This substitute is an active product with ROHS3 compliance, REACH affected status, and AEC-Q200 automotive qualification. The NLV25T-5R6J-EFD maintains the same 5.6 µH inductance and 1008 package footprint. Current rating is 170 mA, representing a 57.5% reduction from the original 400 mA specification. DC resistance is 2.5Ohm maximum, representing a 138% increase over the original 1.05Ohm. Operating temperature range extends to 105°C. This part is suitable for automotive applications with current requirements not exceeding 170 mA and where AEC-Q200 qualification is required.

Frequently Asked Questions (FAQ)

Q: Can the 744758356A directly replace the 1008HC-562EKFS in all applications?

A: The 744758356A is a direct mechanical and electrical substitute for applications where the circuit current requirement does not exceed 370 mA. The reduced current rating and increased DC resistance must be evaluated against circuit specifications. Both parts share identical inductance value, package dimensions, and operating temperature range.

Q: What are the limitations of the TDK NLV25T-5R6J-EF and NLV25T-5R6J-EFD substitutes?

A: Both TDK parts have a maximum current rating of 170 mA, which is 57.5% lower than the original 1008HC-562EKFS. These parts are suitable only for low-current applications. The DC resistance of 2.5Ohm maximum is significantly higher than the original 1.05Ohm, resulting in greater power dissipation. These parts are not suitable for applications requiring the full 400 mA current capacity of the original part.

Q: What is the difference between NLV25T-5R6J-EF and NLV25T-5R6J-EFD?

A: Both parts are electrically and mechanically identical with respect to inductance, current rating, DC resistance, and package dimensions. The primary difference is that the NLV25T-5R6J-EFD carries AEC-Q200 automotive qualification, making it suitable for automotive applications. The NLV25T-5R6J-EF lacks this qualification.

Q: Are all substitute parts physically compatible with the original PCB layout?

A: All substitute parts use the 1008 (2520 Metric) package. However, the Würth 744758356A and both TDK parts have smaller physical dimensions than the original 1008HC-562EKFS. The original part measures 0.115" L x 0.110" W with 0.083" maximum height, while substitutes measure 0.098" to 0.102" L x 0.079" to 0.083" W with 0.075" maximum height. These dimensional differences allow substitutes to fit within the original footprint with clearance margin.

Q: What compliance certifications apply to each substitute?

A: All four parts (original and three substitutes) are ROHS3 compliant and carry MSL rating 1 (Unlimited). The original 1008HC-562EKFS and Würth 744758356A are REACH unaffected. The TDK NLV25T-5R6J-EF and NLV25T-5R6J-EFD are REACH affected. The NLV25T-5R6J-EFD additionally carries AEC-Q200 automotive qualification.

Q: How does DC resistance affect circuit performance?

A: DC resistance directly impacts power dissipation and voltage drop across the inductor. The original 1008HC-562EKFS has 1.05Ohm DCR. The Würth 744758356A increases this to 1.8Ohm maximum (71% increase), while both TDK parts increase this to 2.5Ohm maximum (138% increase). Higher DC resistance results in greater I²R losses and reduced circuit efficiency. Applications sensitive to power dissipation or voltage drop must account for these differences.

Q: Can the 1008HC-562EKFS be used in automotive applications?

A: The original 1008HC-562EKFS does not carry AEC-Q200 qualification. For automotive applications requiring AEC-Q200 compliance, the NLV25T-5R6J-EFD is the appropriate substitute, provided the 170 mA current rating and 2.5Ohm DCR are acceptable for the circuit design.

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