HCM1707-150-R Equivalent & Substitute Parts

Part Overview

The HCM1707-150-R is a 15 µH shielded drum core wirewound inductor manufactured by Eaton - Electronics Division. This surface mount component is rated for 12 A continuous current with a maximum DC resistance of 15.5 mOhm and operates across the temperature range of -55°C to 125°C. The part is currently active in production with 722 pieces available in new original stock.

Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained within the specified parameter tolerances. The HCM1707-150-R has one qualified substitute in the PA4344 series from Pulse Electronics, which provides comparable inductance, current handling, and shielding characteristics while meeting the same RoHS3 compliance requirements.

Substiute Parts

HCM1707-150-R

Eaton - Electronics DivisionIn Stock: 774HCM1707-150-R Datasheet

Current PartRFQ

PA4344.153NLT

Pulse ElectronicsIn Stock: 2684PA4344.153NLT Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the HCM1707-150-R is determined by strict adherence to the following electrical and mechanical parameters:

Inductance Value: The substitute part must provide exactly 15 µH inductance at the 100 kHz test frequency. This is the primary functional specification and cannot deviate.

Current Handling: The substitute must support a minimum continuous current rating of 12 A. Parts with higher current ratings (such as 12.5 A) are acceptable as they provide equal or greater capacity without derating requirements.

DC Resistance: The substitute's maximum DC resistance must not exceed the original specification of 15.5 mOhm. Higher DCR values increase power dissipation and thermal load, potentially affecting circuit performance.

Shielding: Both the main part and substitute must be shielded to maintain electromagnetic containment and prevent interference with adjacent circuit elements.

Mounting and Package: Surface mount configuration and nonstandard package dimensions must be compatible. Physical dimensions (length, width, height) must fit within the PCB layout constraints of the original design.

Operating Temperature Range: The substitute's temperature rating must encompass the application's thermal requirements. The original part operates from -55°C to 125°C; substitutes with equal or broader ranges are acceptable.

Regulatory Compliance: RoHS3 compliance and REACH unaffected status must be maintained to ensure regulatory conformity in target markets.

Parameter Comparison

Engineering Selection Recommendations

Primary Part - HCM1707-150-R (Eaton): This part is the specified component and remains the first choice for new designs and production runs. It is active in production with adequate inventory (722 pieces) and meets all regulatory requirements including RoHS3 compliance and REACH unaffected status. The operating temperature range extends to -55°C, providing coverage for extended low-temperature applications.

Substitute Part - PA4344.153NLT (Pulse Electronics): This part qualifies as a direct substitute when HCM1707-150-R availability is constrained. The PA4344.153NLT maintains the same 15 µH inductance and shielded surface mount configuration. Key advantages include higher current saturation (23 A versus 13 A) and higher continuous current rating (12.5 A versus 12 A), providing additional design margin. The part is also RoHS3 compliant and REACH unaffected.

Substitution Constraints: The PA4344.153NLT operating temperature range begins at -40°C rather than -55°C. Applications requiring operation below -40°C must retain the HCM1707-150-R. The substitute's DC resistance is 20.5 mOhm maximum, compared to 15.5 mOhm for the original part, resulting in approximately 32% higher resistive losses. For thermally sensitive applications, this difference must be evaluated. Physical dimensions differ slightly (17.70mm x 17.20mm versus 17.20mm x 16.85mm); PCB layout verification is required before substitution.

Both parts are active products with current production status and adequate inventory availability.

Frequently Asked Questions (FAQ)

Q: Can PA4344.153NLT be used as a direct replacement for HCM1707-150-R in all applications?

A: The PA4344.153NLT is electrically compatible for inductance and current handling. However, three factors require evaluation: (1) Operating temperature range—the substitute begins at -40°C rather than -55°C; (2) DC resistance—the substitute is 5 mOhm higher, increasing power dissipation; (3) Physical dimensions—the substitute is slightly larger and requires PCB layout verification.

Q: What is the significance of the higher DC resistance in the substitute part?

A: DC resistance directly affects power loss in the inductor. At 12 A, the HCM1707-150-R dissipates 2.23 W (12² × 0.0155), while the PA4344.153NLT dissipates 2.95 W (12² × 0.0205). This 32% increase in losses generates additional heat. For applications with thermal constraints or high-frequency switching, this difference may be significant.

Q: Are both parts suitable for automotive applications?

A: The PA4344.153NLT carries AEC-Q200 qualification, indicating suitability for automotive environments. The HCM1707-150-R does not list AEC-Q200 certification in the provided specifications. For automotive applications, the PA4344.153NLT may be preferred despite the noted constraints.

Q: What is the difference between drum core and molded construction?

A: The HCM1707-150-R uses drum core wirewound construction with iron powder material. The PA4344.153NLT uses molded construction. Both are shielded and provide equivalent inductance and current handling. Molded construction typically offers better mechanical robustness and consistency in automated assembly environments.

Q: Can these parts be used interchangeably in existing PCB designs?

A: Physical dimensions must be verified. The HCM1707-150-R measures 17.20mm × 16.85mm, while the PA4344.153NLT measures 17.70mm × 17.20mm. Both have identical 7.00 mm seated height. PCB footprint and clearance verification is required before substitution in existing designs.

Q: What inventory considerations apply to these parts?

A: The HCM1707-150-R has 722 pieces in new original stock. The PA4344.153NLT has 2641 pieces available. If supply constraints on the primary part are anticipated, the substitute offers significantly higher inventory availability.

Q: Are there any compliance differences between these parts?

A: Both parts are RoHS3 compliant and REACH unaffected. Both carry MSL 1 (unlimited) moisture sensitivity rating. The PA4344.153NLT additionally carries AEC-Q200 automotive qualification, which the HCM1707-150-R does not list.