HPL1005-3N9 Equivalent & Substitute Parts

Part Overview

The HPL1005-3N9 is a 3.9 nH unshielded thin film inductor manufactured by Susumu, designed for surface mount applications in the 0402 (1005 Metric) package. This component is rated for 620 mA maximum current with a DC resistance of 300 mOhm maximum and operates at a self-resonant frequency of 7 GHz. The part is classified as obsolete, necessitating identification of active equivalent components that maintain functional compatibility for new designs and production continuity.

Substiute Parts

HPL1005-3N9

SusumuIn Stock: 1135HPL1005-3N9 Datasheet

Current PartRFQ

ATFC-0402HQ-3N9B-T

Abracon LLCIn Stock: 32268ATFC-0402HQ-3N9B-T Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the HPL1005-3N9 is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Inductance value: 3.9 nH
• Package / Case: 0402 (1005 Metric)
• Mounting Type: Surface Mount
• Type: Thin Film
• Shielding: Unshielded

Allowable Parameter Variations: Substitute parts must maintain or exceed the following specifications:

• Current Rating: Minimum 620 mA (substitutes with equal or higher ratings are acceptable)
• DC Resistance: Maximum 300 mOhm (substitutes with equal or lower resistance are acceptable)
• Self-Resonant Frequency: 7 GHz or higher
• Inductance Tolerance: ±0.2 nH or tighter
• RoHS3 Compliance and MSL 1 rating required

The ATFC-0402HQ-3N9B-T from Abracon LLC meets all mandatory matching parameters and operates within allowable variations, with the exception of current rating (500 mA versus 620 mA) and DC resistance (200 mOhm versus 300 mOhm maximum), both of which represent improved performance characteristics.

Parameter Comparison

Engineering Selection Recommendations

The ATFC-0402HQ-3N9B-T from Abracon LLC is the qualified substitute for the obsolete HPL1005-3N9. Selection of this substitute is based on the following engineering criteria:

Product Status: The HPL1005-3N9 is classified as obsolete, making the active ATFC-0402HQ-3N9B-T the appropriate choice for ongoing production and new designs.

Compliance and Certifications: Both components maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating, ensuring equivalent environmental and regulatory compatibility.

Electrical Equivalence: The substitute maintains identical inductance value (3.9 nH) and self-resonant frequency (7 GHz). The tighter inductance tolerance (±0.1 nH versus ±0.2 nH) and lower DC resistance (200 mOhm maximum versus 300 mOhm maximum) represent performance improvements.

Current Rating Consideration: The substitute is rated for 500 mA maximum current, which is lower than the original 620 mA rating. Circuit designs operating at or below 500 mA current levels are directly compatible. Designs requiring current levels between 500 mA and 620 mA require circuit-level evaluation.

Mechanical Compatibility: Both components use identical 0402 (1005 Metric) surface mount packages with matching footprints. The height difference (0.33mm versus 0.37mm maximum seated height) is within typical PCB assembly tolerances.

Frequently Asked Questions (FAQ)

Q: Can the ATFC-0402HQ-3N9B-T directly replace the HPL1005-3N9 in all applications?

A: Direct replacement is applicable for circuits operating at 500 mA or below. Circuits designed for the full 620 mA current rating of the original part require evaluation of the substitute's 500 mA limitation.

Q: What is the significance of the inductance tolerance difference?

A: The ATFC-0402HQ-3N9B-T provides tighter tolerance (±0.1 nH) compared to the HPL1005-3N9 (±0.2 nH). This represents improved precision and may provide performance benefits in frequency-critical applications.

Q: Are the packages mechanically identical?

A: Both components use the 0402 (1005 Metric) surface mount package with identical length and width (0.039" x 0.020" or 1.00mm x 0.50mm). The maximum seated height differs by 0.04mm (0.33mm versus 0.37mm), which is within standard PCB assembly tolerances and does not affect mechanical compatibility.

Q: What does the lower DC resistance of the substitute mean?

A: The ATFC-0402HQ-3N9B-T has a maximum DC resistance of 200 mOhm compared to 300 mOhm for the original part. Lower DC resistance reduces resistive losses and heat generation, representing an improvement in component efficiency.

Q: Are both components RoHS compliant?

A: Yes, both the HPL1005-3N9 and ATFC-0402HQ-3N9B-T are ROHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity ratings, ensuring equivalent environmental and regulatory compliance.

Q: What is the difference in Q factor between the two parts?

A: The HPL1005-3N9 has a Q of 13 at 300 MHz, while the ATFC-0402HQ-3N9B-T has a Q of 16 at 500 MHz. The higher Q value of the substitute indicates lower losses at its test frequency.

Q: Can I use the substitute in designs requiring the full 620 mA current rating?

A: The substitute is rated for 500 mA maximum current. Applications requiring sustained operation above 500 mA are not suitable for this substitute without circuit redesign or component derating analysis.