1008HS-222EJFS Equivalent & Substitute Parts Reference

Part Overview

The 1008HS-222EJFS is a 2.2 µH unshielded drum core wirewound inductor manufactured by Delta Electronics/Components, rated for 500 mA continuous current with 950mOhm DC resistance. This surface mount component operates across -40°C to 85°C and is housed in a 1008 (2520 Metric) package. The part is classified as obsolete, necessitating identification of active equivalent alternatives that maintain electrical and mechanical compatibility for ongoing production and repair applications.

Substiute Parts

1008HS-222EJFS

Delta Electronics/ComponentsIn Stock: 7661008HS-222EJFS Datasheet

Current PartRFQ

744758322A

Würth ElektronikIn Stock: 3310744758322A Datasheet

DirectRFQ

NLV25T-2R2J-EF

TDK CorporationIn Stock: 1127NLV25T-2R2J-EF Datasheet

SimilarRFQ

NLV25T-2R2J-EFD

TDK CorporationIn Stock: 2778NLV25T-2R2J-EFD Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 1008HS-222EJFS is determined by the following critical parameters:

Primary Compatibility Criteria:

• Inductance value: 2.2 µH (±5% tolerance)
• Package / Case: 1008 (2520 Metric)
• Core material: Ferrite, unshielded drum core
• Mounting type: Surface mount
• RoHS3 compliance
• MSL rating: 1 (Unlimited)

Secondary Compatibility Criteria:

• Current rating: minimum 500 mA
• DC resistance: acceptable range based on circuit requirements
• Operating temperature: minimum -40°C ~ 85°C
• Self-resonant frequency: suitable for intended frequency range

The substitute parts listed below maintain the primary compatibility criteria. Variations in current rating and DC resistance reflect different design approaches by alternative manufacturers while preserving the core electrical function and physical form factor.

Parameter Comparison

Engineering Selection Recommendations

744758322A (Würth Elektronik WE-RFH Series)

This part is the primary direct substitute for the 1008HS-222EJFS. It maintains identical inductance, tolerance, and package specifications while offering superior current rating (520 mA vs. 500 mA) and improved self-resonant frequency (160 MHz vs. 105 MHz). The part is active in production with substantial inventory availability (3300 Pcs). DC resistance is marginally higher (1.1Ohm Max vs. 950mOhm), which may require circuit verification in applications sensitive to resistive losses. ROHS3 compliance and MSL 1 rating ensure compatibility with standard manufacturing processes.

NLV25T-2R2J-EFD (TDK Corporation NLV-EFD Series)

This part provides an alternative substitute with identical inductance and package specifications. The current rating (200 mA) is significantly lower than the original specification, restricting use to applications with reduced current requirements. DC resistance is higher (1.55Ohm Max), introducing greater resistive losses. The extended operating temperature range (-40°C ~ 105°C) and AEC-Q200 rating provide advantages for automotive and high-reliability applications. Tape & Reel packaging supports high-volume production. REACH Affected status requires compliance verification for specific end-use applications.

NLV25T-2R2J-EF (TDK Corporation NLV-EF Series)

This variant is functionally equivalent to the NLV25T-2R2J-EFD with identical electrical specifications. Cut Tape & Digi-Reel® packaging accommodates lower-volume requirements. The same current rating limitation (200 mA) and DC resistance characteristics apply. REACH Affected status requires the same compliance considerations as the EFD variant.

Selection Criteria:

• For direct replacement in existing designs: 744758322A (Würth Elektronik)
• For automotive or high-reliability applications: NLV25T-2R2J-EFD (TDK)
• For applications with current requirements below 200 mA: NLV25T-2R2J-EF or NLV25T-2R2J-EFD (TDK)

Frequently Asked Questions (FAQ)

Q: Can the 744758322A directly replace the 1008HS-222EJFS without circuit modification?

A: The 744758322A maintains identical inductance (2.2 µH ±5%), package (1008/2520 Metric), core type (ferrite unshielded), and operating temperature range (-40°C ~ 85°C). The higher current rating (520 mA vs. 500 mA) and improved self-resonant frequency (160 MHz vs. 105 MHz) are compatible with the original specification. DC resistance is marginally higher (1.1Ohm Max vs. 950mOhm), which may require verification in circuits sensitive to resistive losses. No circuit modification is required for standard applications.

Q: Why do the TDK NLV25T-2R2J series parts have lower current ratings?

A: The NLV25T-2R2J-EF and NLV25T-2R2J-EFD parts are rated for 200 mA continuous current, compared to the original 500 mA specification. These parts are suitable only for applications where the actual circuit current does not exceed 200 mA. Current rating is a critical parameter that cannot be exceeded without risk of component failure or performance degradation.

Q: What is the difference between NLV25T-2R2J-EF and NLV25T-2R2J-EFD?

A: Both parts are electrically identical with the same inductance, tolerance, current rating, DC resistance, and operating temperature range. The primary difference is packaging: NLV25T-2R2J-EF is supplied in Cut Tape (CT) & Digi-Reel® format, while NLV25T-2R2J-EFD is supplied in Tape & Reel (TR) format. Selection depends on production volume and assembly equipment compatibility.

Q: Are all substitute parts RoHS3 compliant?

A: Yes, all listed substitute parts (744758322A, NLV25T-2R2J-EF, and NLV25T-2R2J-EFD) are ROHS3 compliant. The original 1008HS-222EJFS is also ROHS3 compliant. All parts have MSL 1 (Unlimited) moisture sensitivity ratings.

Q: What does "REACH Affected" mean for the TDK parts?

A: REACH Affected status indicates that the part may contain substances of concern under the REACH regulation (Registration, Evaluation, Authorization and Restriction of Chemicals). Compliance verification is required for specific end-use applications, particularly in the European Union. The Würth 744758322A is REACH Unaffected, which may be advantageous for certain regulatory environments.

Q: Can I use the TDK NLV25T-2R2J series in a design originally specified for 500 mA?

A: No. The TDK NLV25T-2R2J series is rated for 200 mA maximum continuous current. Using this part in a circuit requiring 500 mA operation will exceed the component's current rating and result in failure. The 744758322A (520 mA rating) is the appropriate substitute for 500 mA applications.

Q: What is the significance of the self-resonant frequency difference?

A: The 1008HS-222EJFS has a self-resonant frequency of 105 MHz, while the 744758322A is rated at 160 MHz. Higher self-resonant frequency indicates better high-frequency performance characteristics. For applications operating below 105 MHz, both parts are suitable. For applications approaching or exceeding 105 MHz, the 744758322A provides additional frequency margin.

Q: Are there any size or dimensional differences between the substitute parts?

A: All parts conform to the 1008 (2520 Metric) package specification. Minor dimensional variations exist within the package tolerance: the 1008HS-222EJFS measures 0.115" L x 0.110" W (2.92mm x 2.79mm), while the 744758322A measures 0.102" L x 0.083" W (2.60mm x 2.10mm), and the TDK parts measure 0.098" L x 0.079" W (2.50mm x 2.00mm). These variations remain within the 1008 package specification and do not affect PCB footprint compatibility.