HC8LP-R39-R Equivalent & Substitute Parts

Part Overview

The HC8LP-R39-R is a 390 nH unshielded drum core wirewound inductor manufactured by Eaton - Electronics Division. This surface mount component is rated for 20.2 A continuous current with a maximum DC resistance of 2.8 mOhm and operates across the temperature range of -40°C to 155°C. The part is currently active in production and ROHS3 compliant.

Substitute parts are identified when equivalent inductance values, current ratings, and core materials meet the electrical and mechanical requirements of the original specification while maintaining compatibility with surface mount assembly processes.

Substiute Parts

HC8LP-R39-R

Eaton - Electronics DivisionIn Stock: 672HC8LP-R39-R Datasheet

Current PartRFQ

SRP1038A-R39M

Bourns Inc.In Stock: 5633SRP1038A-R39M Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the HC8LP-R39-R is determined by the following critical parameters:

Primary Matching Criteria:

• Inductance value: 390 nH with ±20% tolerance
• Inductance test frequency: 100 kHz
• Mounting type: Surface Mount
• Package classification: Nonstandard
• RoHS compliance: ROHS3 Compliant

Secondary Compatibility Factors:

• Current rating must equal or exceed 20.2 A continuous
• Saturation current (Isat) must equal or exceed 34 A
• DC resistance must not exceed 2.8 mOhm maximum
• Operating temperature range must encompass -40°C to 155°C
• Core type: Drum core wirewound construction

The substitute part SRP1038A-R39M meets these criteria with equivalent inductance and tolerance specifications, higher current ratings (30 A continuous, 60 A saturation), and lower DC resistance (1.3 mOhm maximum). Both parts are surface mount, nonstandard package, ROHS3 compliant, and rated for 100 kHz inductance testing.

Parameter Comparison

Engineering Selection Recommendations

Both the HC8LP-R39-R and SRP1038A-R39M are active production components with ROHS3 compliance and unlimited moisture sensitivity ratings, making them suitable for industrial and commercial applications.

The HC8LP-R39-R remains the primary choice when the original design specification requires an unshielded inductor with the exact Eaton HC8LP series characteristics and the 155°C upper operating temperature limit.

The SRP1038A-R39M serves as a functional substitute when design requirements permit shielded construction, can accommodate the 150°C maximum operating temperature, and benefit from improved current handling (30 A continuous versus 20.2 A) and reduced DC resistance (1.3 mOhm versus 2.8 mOhm maximum). The shielded design of the SRP1038A-R39M provides additional electromagnetic interference mitigation compared to the unshielded HC8LP-R39-R.

Both parts maintain identical inductance values and tolerances at the 100 kHz test frequency, ensuring equivalent performance in circuits designed for this specification.

Frequently Asked Questions (FAQ)

Q: Can SRP1038A-R39M replace HC8LP-R39-R in all applications?

A: Substitution is valid when the circuit design permits shielded inductor construction and operates within the 150°C maximum temperature limit. The SRP1038A-R39M provides superior current handling and lower DC resistance, making it suitable for applications where the HC8LP-R39-R meets minimum requirements.

Q: What is the significance of the shielding difference?

A: The HC8LP-R39-R is unshielded, while the SRP1038A-R39M is shielded. Shielded inductors reduce electromagnetic field radiation and susceptibility to external interference. Selection depends on circuit layout and EMI requirements.

Q: Are the physical dimensions compatible?

A: Both parts are nonstandard package types with similar footprints. HC8LP-R39-R measures 10.90mm L × 10.40mm W × 3.50mm H (seated). SRP1038A-R39M measures 11.00mm L × 10.00mm W × 4.00mm H (seated). PCB layout verification is required for direct substitution.

Q: What is the impact of different core materials?

A: HC8LP-R39-R uses iron powder core material, while SRP1038A-R39M uses carbonyl powder. Both materials support the 390 nH inductance specification at 100 kHz with ±20% tolerance. Core material selection affects frequency response characteristics and thermal performance.

Q: Does the lower DC resistance of SRP1038A-R39M affect circuit performance?

A: Lower DC resistance (1.3 mOhm versus 2.8 mOhm maximum) reduces resistive losses and heat generation. This is advantageous in power delivery and current filtering applications. Circuits designed for the HC8LP-R39-R specifications will function with improved efficiency using the SRP1038A-R39M.

Q: Are both parts suitable for high-temperature applications?

A: HC8LP-R39-R operates to 155°C, supporting extended high-temperature applications. SRP1038A-R39M operates to 150°C. Applications requiring sustained operation above 150°C require the HC8LP-R39-R.