1008HC-562EJFS Equivalent & Substitute Parts

Part Overview

The 1008HC-562EJFS 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 electrical and mechanical compatibility for ongoing production and repair applications.

Key Parameters

Parameter	Value	Unit
Inductance	5.6	µH
Current Rating	400	mA
DC Resistance (DCR)	1.05	Ohm
Tolerance	±5%	—
Core Material	Ferrite	—
Shielding	Unshielded	—
Package / Case	1008 (2520 Metric)	—
Mounting Type	Surface Mount	—
Operating Temperature	-40°C ~ 85°C	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

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

Mandatory Matching Criteria:

Inductance value: 5.6 µH (±5% tolerance)
Package / Case: 1008 (2520 Metric)
Core type: Ferrite, unshielded drum core wirewound
Mounting type: Surface mount
RoHS compliance: ROHS3 Compliant

Conditional Compatibility Criteria:

Current rating must equal or exceed the application requirement
DC resistance must be compatible with circuit design specifications
Operating temperature range must encompass the application environment
Frequency characteristics (self-resonant frequency, Q factor) must support the intended operating frequency

The substitute parts listed below maintain identical inductance values, package dimensions, and core material specifications. However, variations in current rating and DC resistance introduce trade-offs that must be evaluated against specific circuit requirements.

Parameter Comparison

Parameter	1008HC-562EJFS (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	±5%	±5%	±5%	±5%
Current Rating	400 mA	370 mA	170 mA	170 mA
DC Resistance (DCR)	1.05 Ohm	1.8 Ohm Max	2.5 Ohm Max	2.5 Ohm Max
Q @ Freq	22 @ 7.96MHz	20 @ 7.96MHz	25 @ 7.96MHz	25 @ 7.96MHz
Frequency - Self Resonant	42 MHz	80 MHz	42 MHz	42 MHz
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)
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Ratings	—	—	—	AEC-Q200
REACH Status	REACH Unaffected	REACH Unaffected	REACH Affected	REACH Affected

Engineering Selection Recommendations

744758356A (Würth Elektronik WE-RFH Series)

This substitute maintains the closest electrical performance to the original 1008HC-562EJFS. The 370 mA current rating represents a 7.5% reduction from the original 400 mA specification, while the 1.8Ohm maximum DC resistance introduces a 71% increase over the original 1.05Ohm value. The part is active in production with ROHS3 compliance and REACH unaffected status. The higher self-resonant frequency (80 MHz versus 42 MHz) provides extended frequency margin. This option is suitable for applications where the reduced current rating and elevated DC resistance are acceptable within circuit design tolerances.

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

This active TDK alternative provides a 170 mA current rating, representing a 57.5% reduction from the original specification. The 2.5Ohm maximum DC resistance is 138% higher than the original. The extended operating temperature range (-40°C to 105°C) exceeds the original specification. The higher Q factor (25 versus 22) indicates improved efficiency at the test frequency. REACH affected status requires compliance verification for regulated applications. This option is applicable only to circuits designed for significantly lower current levels.

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

This variant is electrically identical to the NLV25T-5R6J-EF but includes AEC-Q200 automotive qualification. Current rating and DC resistance specifications remain at 170 mA and 2.5Ohm maximum respectively. The AEC-Q200 rating qualifies this part for automotive applications requiring formal component qualification. REACH affected status applies. Selection of this variant is restricted to applications requiring automotive-grade component certification.

Frequently Asked Questions (FAQ)

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

A: The 744758356A maintains identical inductance, package, and core specifications. However, the reduced current rating (370 mA versus 400 mA) and increased DC resistance (1.8Ohm maximum versus 1.05Ohm) require circuit-level evaluation. Applications operating at or near 400 mA continuous current cannot use this substitute without design modification.

Q: What is the primary limitation of the TDK NLV25T-5R6J series substitutes?

A: Both TDK alternatives (NLV25T-5R6J-EF and NLV25T-5R6J-EFD) are rated for only 170 mA continuous current, representing a 57.5% reduction from the original 400 mA specification. These parts are suitable only for low-current applications. The 2.5Ohm maximum DC resistance is also significantly elevated compared to the original 1.05Ohm value.

Q: Are all substitute parts available in the same package dimensions?

A: All substitute parts use the 1008 (2520 Metric) package. However, physical dimensions vary slightly. The Würth 744758356A measures 0.102" L x 0.083" W with 0.075" maximum height, while the TDK variants measure 0.098" L x 0.079" W with 0.075" maximum height. The original 1008HC-562EJFS measures 0.115" L x 0.110" W with 0.083" maximum height. These dimensional variations may affect PCB layout compatibility.

Q: Which substitute part has the best compliance status?

A: The Würth 744758356A maintains REACH unaffected status, identical to the original part. Both TDK alternatives carry REACH affected status, requiring compliance documentation for regulated markets. The NLV25T-5R6J-EFD additionally includes AEC-Q200 automotive qualification, making it the only option for automotive applications.

Q: How do the frequency characteristics compare between the main part and substitutes?

A: The original 1008HC-562EJFS has a self-resonant frequency of 42 MHz with Q factor of 22 at 7.96 MHz. The Würth 744758356A exhibits a higher self-resonant frequency of 80 MHz with Q factor of 20, providing extended frequency margin but slightly lower efficiency. Both TDK variants match the original self-resonant frequency of 42 MHz but offer improved Q factor of 25, indicating better efficiency at the test frequency.

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

A: Increased DC resistance directly increases power dissipation and voltage drop across the inductor. The Würth substitute with 1.8Ohm maximum DCR dissipates approximately 71% more power than the original at equivalent current levels. The TDK substitutes with 2.5Ohm maximum DCR dissipate approximately 138% more power. Circuit designs must account for this additional power loss through thermal analysis and component derating calculations.

Q: Can the NLV25T-5R6J-EFD be used in non-automotive applications?

A: Yes. The NLV25T-5R6J-EFD is electrically and mechanically identical to the NLV25T-5R6J-EF. The AEC-Q200 qualification is an additional certification that does not restrict use in non-automotive applications. However, the 170 mA current rating limitation remains applicable regardless of application domain.

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