1008HS-273EKFS Equivalent & Substitute Parts

Part Overview

The 1008HS-273EKFS is a 27 µH unshielded drum core wirewound inductor manufactured by Delta Electronics/Components, designed for surface mount applications in the 1008 (2520 Metric) package. This component operates at 180 mA current rating with 3.5Ω DC resistance and is characterized by a self-resonant frequency of 17 MHz.

The 1008HS-273EKFS has reached obsolete product status. Identifying equivalent 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-273EKFS

Delta Electronics/ComponentsIn Stock: 11671008HS-273EKFS Datasheet

Current PartRFQ

NLV25T-270J-EF

TDK CorporationIn Stock: 2407NLV25T-270J-EF Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 1008HS-273EKFS are identified based on the following critical parameters that determine functional equivalence:

Primary Matching Criteria:

• Inductance value: 27 µH (within tolerance specifications)
• Package / Case: 1008 (2520 Metric) surface mount
• Core material: Ferrite, unshielded drum core configuration
• Inductance test frequency: 2.52 MHz

Secondary Compatibility Parameters:

• Current rating: Must support minimum 180 mA operation
• DC resistance: Lower or equivalent values acceptable for thermal performance
• Operating temperature range: Minimum -40°C to 85°C coverage
• RoHS3 compliance and MSL rating

The substitute part NLV25T-270J-EF from TDK Corporation meets the primary matching criteria with identical inductance, package, core type, and test frequency. Differences in current rating (115 mA vs. 180 mA) and DC resistance (6.3Ω vs. 3.5Ω) represent trade-offs that must be evaluated against specific application requirements.

Parameter Comparison

Engineering Selection Recommendations

NLV25T-270J-EF Substitution Criteria:

The NLV25T-270J-EF from TDK Corporation is an active product with confirmed availability (2300 pcs in stock) and represents a viable substitute for the obsolete 1008HS-273EKFS based on the following factors:

1. Identical Inductance and Package: Both components specify 27 µH inductance in the 1008 (2520 Metric) surface mount package, ensuring mechanical and electrical compatibility at the inductance level.

2. Compliance Alignment: Both parts maintain ROHS3 compliance and MSL Level 1 (Unlimited) moisture sensitivity rating, supporting equivalent environmental and regulatory requirements.

3. Extended Operating Temperature: The NLV25T-270J-EF supports -40°C to 105°C operation, exceeding the original -40°C to 85°C range and providing additional thermal margin.

4. Improved Tolerance and Q Factor: The substitute part offers ±5% inductance tolerance (vs. ±10%) and Q factor of 25 @ 2.52 MHz (vs. 20), indicating superior frequency response characteristics.

5. Current Rating Consideration: The NLV25T-270J-EF current rating of 115 mA is lower than the original 180 mA specification. This parameter requires application-level verification to confirm compatibility with circuit current demands.

6. DC Resistance Trade-off: The substitute part specifies 6.3Ω maximum DC resistance compared to 3.5Ω in the original component. Higher DC resistance results in increased power dissipation and thermal generation, requiring thermal analysis for applications with sustained current operation.

Frequently Asked Questions (FAQ)

Q1: Can the NLV25T-270J-EF directly replace the 1008HS-273EKFS in all applications?

A: Direct replacement is possible for applications where circuit current does not exceed 115 mA. Applications requiring the full 180 mA current rating of the original component require alternative solutions or circuit redesign. The increased DC resistance (6.3Ω vs. 3.5Ω) must be evaluated for thermal impact in the specific application.

Q2: What is the significance of the inductance tolerance difference (±10% vs. ±5%)?

A: The NLV25T-270J-EF provides tighter inductance tolerance (±5%), resulting in more consistent component performance across production batches. This is advantageous for applications with strict inductance specifications. The original ±10% tolerance is less stringent and may be acceptable for less critical applications.

Q3: Are both components physically compatible in the same PCB footprint?

A: Both components use the 1008 (2520 Metric) package for surface mount assembly. However, physical dimensions differ slightly: the 1008HS-273EKFS measures 0.115" L × 0.110" W × 0.083" H, while the NLV25T-270J-EF measures 0.098" L × 0.079" W × 0.075" H. The substitute part is smaller and will fit within the original footprint with clearance margin.

Q4: What is the impact of the higher self-resonant frequency in the substitute part?

A: The NLV25T-270J-EF exhibits a self-resonant frequency of 21 MHz compared to 17 MHz in the original component. This higher SRF extends the usable frequency range and reduces parasitic resonance effects at lower frequencies, generally providing improved high-frequency performance.

Q5: How does the extended operating temperature range of the substitute part affect selection?

A: The NLV25T-270J-EF supports operation to 105°C (vs. 85°C maximum for the original). This extended range provides additional thermal margin and is beneficial for applications in elevated ambient temperature environments or with significant self-heating.

Q6: What packaging format is available for the NLV25T-270J-EF?

A: The NLV25T-270J-EF is supplied in Tape & Reel (TR) packaging format, suitable for automated assembly processes. Verify packaging compatibility with your procurement and assembly requirements.

Q7: Are there regulatory or compliance differences between the two parts?

A: Both components are ROHS3 compliant with MSL Level 1 rating. The NLV25T-270J-EF carries REACH Affected status, while the original 1008HS-273EKFS is REACH Unaffected. Verify REACH compliance requirements for your specific application and end-use market.