1008HS-472EKFS Equivalent & Substitute Parts Reference

Part Overview

The 1008HS-472EKFS is a 4.7 µH unshielded drum core wirewound inductor manufactured by Delta Electronics/Components, rated for 300 mA continuous current with 1.28Ohm DC resistance. This surface mount component operates across -40°C to 85°C and is housed in a 1008 (2520 Metric) package footprint.

The 1008HS-472EKFS carries an obsolete product status. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications utilizing this inductor specification.

Substiute Parts

1008HS-472EKFS

Delta Electronics/ComponentsIn Stock: 11651008HS-472EKFS Datasheet

Current PartRFQ

744758347A

Würth ElektronikIn Stock: 1592744758347A Datasheet

DirectRFQ

NLV25T-4R7J-EF

TDK CorporationIn Stock: 2216NLV25T-4R7J-EF Datasheet

SimilarRFQ

NLV25T-4R7J-EFD

TDK CorporationIn Stock: 6275NLV25T-4R7J-EFD Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 1008HS-472EKFS is determined by the following critical parameters:

Primary Matching Criteria:

• Inductance value: 4.7 µH (fixed specification)
• Package / Case: 1008 (2520 Metric) (physical compatibility requirement)
• Core type: Ferrite, unshielded (electromagnetic performance baseline)
• Mounting type: Surface Mount (assembly compatibility)
• RoHS3 compliance (regulatory requirement)

Secondary Compatibility Parameters:

• Current rating: Minimum 300 mA (functional requirement)
• DC resistance: Acceptable range determined by circuit design margins
• Operating temperature: Minimum -40°C ~ 85°C coverage
• Moisture sensitivity: MSL 1 (unlimited) preferred for supply chain flexibility

The substitute parts listed below maintain the primary matching criteria. Variations in current rating, DC resistance, and operating temperature range reflect different design approaches within the same package footprint and inductance specification.

Parameter Comparison

Engineering Selection Recommendations

744758347A (Würth Elektronik WE-RFH Series)

This part qualifies as a direct substitute. It maintains identical inductance (4.7 µH), package footprint (1008), and operating temperature range (-40°C ~ 85°C). The 744758347A provides superior current handling (400 mA versus 300 mA) and improved inductance tolerance (±5% versus ±10%). DC resistance increases to 1.65Ohm maximum, representing a 29% increase from the original specification. The part carries active product status with ROHS3 compliance and REACH unaffected designation. Tape & Reel packaging supports automated assembly processes.

NLV25T-4R7J-EF (TDK Corporation NLV-EF Series)

This part maintains core electrical specifications (4.7 µH inductance, 1008 package) with active product status. The NLV25T-4R7J-EF operates across an extended temperature range (-40°C ~ 105°C) and delivers superior Q factor (30 @ 7.96MHz). Current rating reduces to 175 mA, representing a 42% decrease from the original 300 mA specification. DC resistance increases to 2.3Ohm maximum. REACH affected status applies. This configuration suits applications with lower current requirements and higher temperature tolerance needs.

NLV25T-4R7J-EFD (TDK Corporation NLV-EFD Series)

This variant matches the NLV25T-4R7J-EF electrical and thermal specifications with identical 175 mA current rating and 2.3Ohm maximum DC resistance. The NLV25T-4R7J-EFD includes AEC-Q200 automotive qualification rating, distinguishing it for automotive and high-reliability applications. Extended temperature range (-40°C ~ 105°C) and superior Q factor (30 @ 7.96MHz) apply. REACH affected status and Tape & Reel packaging are consistent with the NLV-EF variant. Higher inventory availability (6237 pieces) supports sustained supply.

Selection Basis:

• 744758347A is recommended for direct replacement in applications requiring the original 300 mA current specification with minimal design modification.
• NLV25T-4R7J-EFD is recommended for new designs and applications requiring automotive-grade reliability (AEC-Q200) or extended operating temperature coverage.
• NLV25T-4R7J-EF serves as an alternative where automotive qualification is not required.

All three substitutes maintain ROHS3 compliance, MSL 1 moisture sensitivity, and identical package footprint compatibility.

Frequently Asked Questions (FAQ)

Q: Can 744758347A directly replace 1008HS-472EKFS in existing designs?

A: Yes. The 744758347A maintains identical inductance (4.7 µH), package footprint (1008), and operating temperature range (-40°C ~ 85°C). The higher current rating (400 mA versus 300 mA) and improved tolerance (±5% versus ±10%) provide design margin. DC resistance increases from 1.28Ohm to 1.65Ohm maximum; circuit performance impact depends on application-specific impedance requirements.

Q: What is the current rating limitation for TDK NLV25T-4R7J series substitutes?

A: Both NLV25T-4R7J-EF and NLV25T-4R7J-EFD are rated for 175 mA continuous current, representing a 42% reduction from the original 1008HS-472EKFS 300 mA specification. These parts are suitable only for applications where circuit current does not exceed 175 mA. Exceeding this rating causes inductor saturation and performance degradation.

Q: What is the difference between NLV25T-4R7J-EF and NLV25T-4R7J-EFD?

A: Both parts share identical electrical specifications (4.7 µH, 175 mA, 2.3Ohm DCR) and thermal range (-40°C ~ 105°C). The NLV25T-4R7J-EFD includes AEC-Q200 automotive qualification rating, making it suitable for automotive and high-reliability applications. The NLV25T-4R7J-EF lacks this certification. Inventory availability differs: NLV25T-4R7J-EFD (6237 pieces) versus NLV25T-4R7J-EF (2200 pieces).

Q: Are all substitute parts RoHS3 compliant?

A: Yes. The 1008HS-472EKFS, 744758347A, NLV25T-4R7J-EF, and NLV25T-4R7J-EFD all carry ROHS3 compliance certification, meeting EU Directive 2011/65/EU requirements.

Q: What packaging formats are available for these substitutes?

A: The original 1008HS-472EKFS is supplied in bulk packaging. All three substitute parts (744758347A, NLV25T-4R7J-EF, NLV25T-4R7J-EFD) are available in Tape & Reel (TR) format, supporting automated pick-and-place assembly processes.

Q: How does DC resistance variation affect circuit performance?

A: DC resistance increases across all substitutes: 744758347A (1.65Ohm max), NLV25T-4R7J-EF (2.3Ohm max), and NLV25T-4R7J-EFD (2.3Ohm max) versus the original 1.28Ohm. Higher DCR increases power dissipation and reduces circuit efficiency. Circuit design must account for this resistance increase through thermal analysis and impedance calculations specific to the application.

Q: Which substitute is recommended for automotive applications?

A: NLV25T-4R7J-EFD is the designated choice for automotive applications, carrying AEC-Q200 qualification. This certification confirms compliance with automotive reliability and quality standards. Current rating limitation (175 mA) must be verified against application requirements.

Q: What is the REACH status significance for these parts?

A: The original 1008HS-472EKFS carries REACH unaffected status. Substitutes 744758347A also maintains REACH unaffected status. TDK parts (NLV25T-4R7J-EF and NLV25T-4R7J-EFD) carry REACH affected status, indicating potential substance of concern presence. Applications subject to REACH compliance requirements must account for this designation in supply chain documentation.