HCM1707-4R7-R Equivalent & Substitute Parts

Part Overview

The HCM1707-4R7-R is a 4.7 µH shielded drum core wirewound inductor manufactured by Eaton - Electronics Division. This surface mount component is rated for 27 A continuous current with a maximum DC resistance of 4.72 mOhm and operates across the temperature range of -55°C to 125°C. The part is classified as Active product status with full RoHS3 compliance and unlimited moisture sensitivity rating (MSL 1).

Substitute parts are identified when equivalent electrical performance can be achieved within the specified parameter tolerances while maintaining compliance with applicable standards and certifications. The HCM1707-4R7-R has been qualified with one direct substitute in the Pulse Electronics PA4344 series.

Substiute Parts

HCM1707-4R7-R

Eaton - Electronics DivisionIn Stock: 853HCM1707-4R7-R Datasheet

Current PartRFQ

PA4344.472NLT

Pulse ElectronicsIn Stock: 863PA4344.472NLT Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the HCM1707-4R7-R is determined by the following parameters:

Inductance Value: The substitute part must maintain the 4.7 µH inductance specification at the 100 kHz test frequency.

Current Rating: The substitute must support a minimum continuous current rating of 27 A. Parts with lower current ratings do not qualify as direct substitutes.

DC Resistance: The substitute's maximum DC resistance must not exceed 4.72 mOhm to maintain equivalent power dissipation characteristics.

Shielding: The substitute must be shielded to maintain electromagnetic compatibility in the application circuit.

Mounting Type: The substitute must be surface mount compatible with nonstandard package dimensions suitable for the application footprint.

Environmental Compliance: The substitute must maintain RoHS3 compliance and MSL 1 rating for manufacturing and storage compatibility.

Operating Temperature: The substitute must support operation within the -55°C to 125°C range or a subset thereof that includes the application's operating conditions.

The PA4344.472NLT from Pulse Electronics meets these substitution criteria with the exception of current rating, which is specified at 25 A versus the 27 A rating of the primary part. This represents a 7.4% reduction in continuous current capacity.

Parameter Comparison

Engineering Selection Recommendations

Primary Part (HCM1707-4R7-R): Select this Eaton component when the application requires the full 27 A continuous current rating and extended low-temperature operation down to -55°C. This part is Active status with established supply availability (783 pcs in stock) and carries full RoHS3 compliance with AEC-Q200 automotive qualification implied by the product series.

Substitute Part (PA4344.472NLT): The Pulse Electronics PA4344.472NLT qualifies as a substitute when the application current requirement does not exceed 25 A continuous operation and the minimum operating temperature requirement is -40°C or higher. This part carries explicit AEC-Q200 automotive qualification and RoHS3 compliance. The substitute exhibits higher saturation current (41 A versus 24 A), which provides improved headroom against saturation-induced inductance collapse. However, the DC resistance is 0.78 mOhm higher, resulting in approximately 16.5% greater resistive losses at rated current.

Both parts are Active status with unlimited moisture sensitivity (MSL 1), indicating compatibility with standard manufacturing and storage environments without special handling requirements.

Frequently Asked Questions (FAQ)

Q: Can the PA4344.472NLT be used as a direct replacement for the HCM1707-4R7-R in all applications?

A: The PA4344.472NLT is not a direct replacement for all applications. The substitute part has a 25 A current rating versus 27 A for the primary part. Applications operating at or above 25 A continuous current require the HCM1707-4R7-R. Additionally, applications requiring operation below -40°C must use the primary part, which is rated to -55°C.

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

A: The PA4344.472NLT exhibits 5.5 mOhm maximum DC resistance compared to 4.72 mOhm for the HCM1707-4R7-R. At 25 A continuous current, this results in approximately 0.34 W additional power dissipation in the substitute part. Thermal management and circuit design must account for this difference.

Q: Are both parts qualified for automotive applications?

A: The PA4344.472NLT carries explicit AEC-Q200 qualification. The HCM1707-4R7-R is part of the Eaton HCM1707 series, which is established in automotive supply chains, though AEC-Q200 status is not explicitly stated in the provided data.

Q: What are the physical dimension differences between these parts?

A: The HCM1707-4R7-R measures 17.20mm L x 16.85mm W x 7.00mm H. The PA4344.472NLT measures 17.70mm L x 17.20mm W x 7.00mm H. Both parts have identical seated height. The substitute is approximately 0.5mm larger in length and 0.35mm larger in width. PCB layout verification is required before substitution.

Q: Do both parts have the same packaging format?

A: No. The HCM1707-4R7-R is supplied in Cut Tape (CT) packaging, while the PA4344.472NLT is supplied in Tape & Reel (TR) packaging. Manufacturing process compatibility and component handling equipment must be verified before substitution.

Q: What is the saturation current difference, and does it matter?

A: The HCM1707-4R7-R has a saturation current (Isat) of 24 A, while the PA4344.472NLT has 41 A. The substitute part provides significantly greater margin before saturation-induced inductance degradation occurs. However, both parts are rated for continuous operation below their saturation points, so this difference is relevant only in transient or fault-current scenarios.

Q: Are both parts RoHS3 compliant?

A: Yes. Both the HCM1707-4R7-R and PA4344.472NLT are RoHS3 compliant with REACH Unaffected status and ECCN EAR99 classification.