1008HC-183EJFS Equivalent & Substitute Parts Reference

Part Overview

The 1008HC-183EJFS is a fixed surface mount inductor manufactured by Delta Electronics/Components, featuring an 18 µH inductance value with 200 mA current rating and 2.6 Ohm DC resistance. This component is classified as an unshielded drum core wirewound inductor in the 1008 (2520 Metric) package format. The part is currently listed as obsolete, necessitating identification of functionally equivalent alternatives for ongoing design support and procurement continuity.

Substiute Parts

1008HC-183EJFS

Delta Electronics/ComponentsIn Stock: 10611008HC-183EJFS Datasheet

Current PartRFQ

NLV25T-180J-EF

TDK CorporationIn Stock: 2015NLV25T-180J-EF Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 1008HC-183EJFS is determined by the following critical parameters:

Primary Matching Criteria:

• Inductance value: 18 µH (±5% tolerance acceptable)
• Package format: 1008 (2520 Metric) surface mount
• Core material: Ferrite drum core, unshielded configuration
• Inductance test frequency: 2.52 MHz

Secondary Compatibility Factors:

• Current rating must equal or exceed application requirements
• DC resistance must be compatible with circuit design specifications
• Operating temperature range must encompass application environment
• Regulatory compliance (RoHS3, REACH status) must meet procurement standards

The substitute part NLV25T-180J-EF from TDK Corporation matches the primary criteria of inductance value, package format, core type, and test frequency. Differences in current rating, DC resistance, and operating temperature range represent trade-offs that must be evaluated against specific application requirements.

Parameter Comparison

Engineering Selection Recommendations

Primary Consideration: Product Status

The 1008HC-183EJFS is classified as obsolete. The NLV25T-180J-EF is an active product from TDK Corporation, ensuring ongoing availability and manufacturing support.

Regulatory Compliance

Both parts maintain ROHS3 compliance. The NLV25T-180J-EF carries REACH Affected status, while the original part is REACH Unaffected. Applications subject to REACH regulations must account for this distinction during component qualification.

Current Rating Differential

The original part supports 200 mA operation; the substitute supports 130 mA. Selection of the NLV25T-180J-EF requires confirmation that circuit current demands do not exceed 130 mA. Applications requiring the full 200 mA rating cannot use this substitute without circuit redesign.

DC Resistance Impact

The substitute exhibits higher DC resistance (4.8 Ohm maximum versus 2.6 Ohm). This increases power dissipation and voltage drop across the inductor. Thermal and voltage margin analysis is required for applications sensitive to these parameters.

Temperature Range Extension

The NLV25T-180J-EF operates to 105°C versus 85°C for the original part, providing extended high-temperature capability for applications requiring this performance envelope.

Frequently Asked Questions (FAQ)

Q: Can the NLV25T-180J-EF directly replace the 1008HC-183EJFS in all applications?

A: Direct replacement is not universal. The substitute part has a lower current rating (130 mA versus 200 mA) and higher DC resistance (4.8 Ohm maximum versus 2.6 Ohm). Replacement is valid only when circuit current remains below 130 mA and the higher DC resistance does not violate design specifications for voltage drop or thermal dissipation.

Q: What is the significance of the different physical dimensions between these parts?

A: The 1008HC-183EJFS measures 0.115" L x 0.110" W x 0.083" H (seated). The NLV25T-180J-EF measures 0.098" L x 0.079" W x 0.075" H (seated). Both conform to the 1008 (2520 Metric) package specification. The dimensional difference reflects different internal construction. PCB footprints designed for the 1008 package accommodate both parts, though the smaller substitute may provide marginal clearance benefits in dense layouts.

Q: How do the Q factor differences affect circuit performance?

A: The NLV25T-180J-EF exhibits higher Q (25 @ 2.52 MHz versus 20 @ 2.52 MHz), indicating lower losses at the test frequency. The higher self-resonant frequency (24 MHz versus 20 MHz) extends the usable frequency range. These characteristics may improve filter performance or reduce noise in RF and switching applications, but do not affect DC or low-frequency inductor behavior.

Q: Are there packaging format differences between these parts?

A: The 1008HC-183EJFS is supplied in standard packaging. The NLV25T-180J-EF is supplied in Tape & Reel (TR) format. Both are surface mount components compatible with automated assembly equipment. Tape & Reel packaging is standard for high-volume production and does not affect electrical performance or PCB mounting.

Q: What compliance considerations apply to the REACH status difference?

A: The original part carries REACH Unaffected status; the substitute carries REACH Affected status. For applications or supply chains subject to REACH regulations, the substitute part requires compliance documentation and may be subject to additional regulatory requirements. Procurement teams must verify applicability to their specific regulatory environment.

Q: Can the extended operating temperature range of the substitute create compatibility issues?

A: The NLV25T-180J-EF operates to 105°C versus 85°C for the original part. This represents an advantage for high-temperature applications. No compatibility issues arise from the extended range; applications operating within the original -40°C to 85°C envelope experience no adverse effects from the substitute's broader temperature capability.