1008HS-151EJFS Equivalent & Substitute Parts Reference

Part Overview

The 1008HS-151EJFS is a 150 nH unshielded drum core wirewound inductor manufactured by Delta Electronics/Components, rated for 1.2 A continuous current with 150 mOhm DC resistance. This surface mount component is designed for high-frequency applications with a self-resonant frequency of 800 MHz and operates across the -40°C to 85°C temperature range.

The 1008HS-151EJFS is classified as obsolete. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications utilizing this inductance value and package format.

Substiute Parts

1008HS-151EJFS

Delta Electronics/ComponentsIn Stock: 10991008HS-151EJFS Datasheet

Current PartRFQ

NLV25T-R15J-EF

TDK CorporationIn Stock: 4441NLV25T-R15J-EF Datasheet

SimilarRFQ

NLV25T-R15J-EFD

TDK CorporationIn Stock: 1757NLV25T-R15J-EFD Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 1008HS-151EJFS must satisfy the following electrical and mechanical criteria:

Mandatory Matching Parameters:

• Inductance: 150 nH
• Tolerance: ±5%
• Package / Case: 1008 (2520 Metric)
• Core Type: Ferrite Drum Core
• Shielding: Unshielded
• Mounting Type: Surface Mount
• Inductance Test Frequency: 25.2 MHz
• Q @ 25.2 MHz: 30

Allowable Variations:

• Current Rating: Substitute parts may have lower current ratings than the original 1.2 A specification, provided the application does not exceed the substitute's rated current
• DC Resistance (DCR): Substitute parts may have higher DCR values, which affects power dissipation and thermal performance
• Operating Temperature Range: Substitute parts may have extended upper temperature limits
• Self-Resonant Frequency: Substitute parts may have different SRF values due to manufacturing variations
• Product Status: Active status substitutes are preferred over obsolete parts for long-term availability

The identified substitute parts NLV25T-R15J-EF and NLV25T-R15J-EFD, both manufactured by TDK Corporation, meet all mandatory matching parameters and are classified as active products.

Parameter Comparison

Engineering Selection Recommendations

NLV25T-R15J-EF (TDK Corporation): This substitute part is active and maintains full electrical equivalence for inductance, tolerance, and core characteristics. The part is ROHS3 compliant and carries unlimited moisture sensitivity rating. Selection of this part is appropriate for applications where the current requirement does not exceed 500 mA and where the increased DCR of 350 mOhm maximum is acceptable for the thermal budget.

NLV25T-R15J-EFD (TDK Corporation): This substitute part is active and functionally equivalent to NLV25T-R15J-EF with the addition of AEC-Q200 automotive qualification. This part is suitable for applications requiring automotive-grade reliability and extended operating temperature range to 105°C. The AEC-Q200 rating provides additional process control and quality assurance documentation. Selection of this part is recommended for automotive and mission-critical applications where the current requirement does not exceed 500 mA.

Current Rating Consideration: Both TDK substitutes are rated for 500 mA maximum continuous current, compared to the original 1.2 A rating. Applications operating at currents exceeding 500 mA are not suitable for these substitutes. Circuit designs must be reviewed to confirm operating current remains within the 500 mA limit.

DC Resistance Impact: The substitute parts specify 350 mOhm maximum DCR compared to the original 150 mOhm specification. This represents a 2.33× increase in series resistance. Power dissipation will increase proportionally with the square of the operating current. Thermal analysis is required to confirm the substitute part remains within acceptable temperature limits in the target application.

Frequently Asked Questions (FAQ)

Q: Can NLV25T-R15J-EF or NLV25T-R15J-EFD be used as direct replacements for 1008HS-151EJFS?

A: Both TDK parts are electrically and mechanically compatible for applications where the operating current does not exceed 500 mA. The identical inductance value (150 nH), tolerance (±5%), core type (ferrite drum core), package format (1008/2520 Metric), and Q factor (30 @ 25.2 MHz) ensure functional equivalence. However, the reduced current rating and increased DCR must be evaluated against circuit requirements.

Q: What is the impact of the higher DC resistance in the substitute parts?

A: The substitute parts specify 350 mOhm maximum DCR versus 150 mOhm for the original part. At 500 mA operating current, the substitute part will dissipate approximately 87.5 mW (0.5 A² × 0.35 Ω) compared to 30 mW for the original part at the same current. Circuit thermal design must accommodate this increased power dissipation.

Q: Are the TDK substitutes available in the same packaging format?

A: Yes. Both NLV25T-R15J-EF and NLV25T-R15J-EFD are supplied in 1008 (2520 Metric) surface mount package format, identical to the original part. Both are available in Tape & Reel (TR) packaging for automated assembly.

Q: What is the difference between NLV25T-R15J-EF and NLV25T-R15J-EFD?

A: Both parts are electrically and mechanically identical. The primary difference is that NLV25T-R15J-EFD carries AEC-Q200 automotive qualification, which includes additional reliability testing, process controls, and quality documentation. NLV25T-R15J-EFD is recommended for automotive applications or where automotive-grade reliability is required.

Q: Can these substitutes operate at the original part's maximum temperature of 85°C?

A: Yes. Both TDK substitutes are rated for -40°C to 105°C operating temperature range, which exceeds the original -40°C to 85°C specification. The substitutes are suitable for the original operating temperature range and provide additional margin for higher ambient temperatures.

Q: What is the self-resonant frequency difference between the original and substitute parts?

A: The original 1008HS-151EJFS specifies 800 MHz self-resonant frequency, while both TDK substitutes specify 550 MHz. This difference reflects manufacturing variations in the ferrite core and winding geometry. For applications operating below 550 MHz, this difference is not significant. Applications requiring operation near or above 550 MHz should verify the substitute part's performance characteristics.

Q: Are both substitute parts RoHS compliant?

A: Yes. Both NLV25T-R15J-EF and NLV25T-R15J-EFD are ROHS3 compliant and carry unlimited moisture sensitivity level (MSL 1), matching the original part's environmental compliance status.