HC7-1R5-R Equivalent & Substitute Parts

Part Overview

The HC7-1R5-R is a 1.5 µH unshielded drum core wirewound inductor manufactured by Eaton - Electronics Division. This surface mount component is rated for 14.2 A continuous current with a maximum DC resistance of 4.3 mOhm and operates across the temperature range of -40°C to 155°C. The part maintains Active product status and is RoHS Compliant.

Substitute parts are identified when equivalent electrical performance can be achieved within the specified parameter tolerances while maintaining surface mount compatibility and similar thermal operating ranges. The HC7-1R5-R has one qualified substitute in the PG0077 series from Pulse Electronics.

Substiute Parts

HC7-1R5-R

Eaton - Electronics DivisionIn Stock: 988HC7-1R5-R Datasheet

Current PartRFQ

PG0077.142NLT

Pulse ElectronicsIn Stock: 2811PG0077.142NLT Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the HC7-1R5-R is determined by the following criteria:

Inductance Value: The substitute part must fall within the ±20% tolerance band of 1.5 µH, establishing an acceptable range of 1.2 µH to 1.8 µH at the 100 kHz test frequency.

Current Handling: The substitute must support the application's continuous current requirements. The HC7-1R5-R is rated for 14.2 A continuous current; substitute parts with equal or higher current ratings maintain thermal compatibility.

DC Resistance: Lower or equivalent DCR values ensure comparable power dissipation characteristics and efficiency performance.

Saturation Current (Isat): The substitute's saturation current must be sufficient to prevent inductance collapse under peak current conditions in the application.

Operating Temperature Range: The substitute must cover the application's thermal operating window. The HC7-1R5-R operates from -40°C to 155°C; substitutes with narrower ranges may be acceptable if the application operates within the substitute's specified limits.

Mounting and Shielding: Surface mount configuration and unshielded construction must be maintained for mechanical and electromagnetic compatibility.

Regulatory Compliance: RoHS and REACH compliance status must align with application requirements.

Parameter Comparison

Engineering Selection Recommendations

Primary Consideration - Temperature Range: The PG0077.142NLT operates to a maximum of 95°C, compared to the HC7-1R5-R's 155°C upper limit. Selection of the substitute is contingent upon the application's maximum operating temperature not exceeding 95°C. If the application requires sustained operation above 95°C, the HC7-1R5-R must be retained.

Electrical Performance: The PG0077.142NLT provides superior electrical characteristics within the acceptable substitution window. The 27 A continuous current rating exceeds the HC7-1R5-R's 14.2 A specification, and the 2.1 mOhm maximum DCR is substantially lower than the 4.3 mOhm specification, resulting in reduced power dissipation and improved thermal performance in the application circuit.

Inductance Equivalence: The 1.4 µH inductance of the PG0077.142NLT falls within the ±20% tolerance band of the HC7-1R5-R's 1.5 µH specification. At the 100 kHz test frequency, both parts meet the functional inductance requirement.

Saturation Performance: Both parts exhibit equivalent saturation current ratings (28.8 A versus 28 A), ensuring comparable behavior under peak current transients.

Regulatory Compliance: Both parts maintain RoHS compliance. The PG0077.142NLT carries ROHS3 Compliant status and is REACH Unaffected, meeting current regulatory requirements.

Physical Compatibility: The substitute part dimensions are nearly identical to the HC7-1R5-R, with a 1.0 mm height difference (6.50 mm versus 5.50 mm). PCB layout and assembly clearance must be verified to accommodate the increased height.

Product Status: Both parts maintain Active product status, ensuring continued availability and supply chain stability.

Frequently Asked Questions (FAQ)

Q: Can the PG0077.142NLT be used as a direct replacement for the HC7-1R5-R in all applications?

A: The PG0077.142NLT is electrically compatible within the specified parameter tolerances. However, substitution is conditional upon the application's maximum operating temperature not exceeding 95°C. If the application requires operation above 95°C, the HC7-1R5-R must be used. Additionally, the 1.0 mm height difference must be verified against PCB assembly clearance requirements.

Q: What is the significance of the inductance difference between 1.5 µH and 1.4 µH?

A: Both values fall within the ±20% tolerance specification established for this product category. At the 100 kHz test frequency, the 1.4 µH value of the PG0077.142NLT is within the acceptable range of 1.2 µH to 1.8 µH. The 0.1 µH difference represents approximately 6.7% deviation from the HC7-1R5-R nominal value and is within normal manufacturing tolerance.

Q: Why does the PG0077.142NLT have a lower maximum operating temperature?

A: The operating temperature range is determined by the component's core material, winding construction, and insulation system. The PG0077.142NLT is specified for -40°C to 95°C operation. This specification reflects the manufacturer's thermal design and testing. Applications requiring operation above 95°C must use the HC7-1R5-R.

Q: How does the lower DC resistance of the PG0077.142NLT affect circuit performance?

A: The PG0077.142NLT's 2.1 mOhm maximum DCR is substantially lower than the HC7-1R5-R's 4.3 mOhm maximum. Lower DCR reduces resistive power dissipation (I²R losses) in the inductor, resulting in improved efficiency and reduced thermal generation within the component. This is a performance advantage in applications where power dissipation is a design consideration.

Q: Are there any PCB layout considerations when substituting the PG0077.142NLT?

A: The PG0077.142NLT is 1.0 mm taller than the HC7-1R5-R (6.50 mm versus 5.50 mm seated height). PCB assembly clearance, including proximity to other components, conformal coating processes, and enclosure constraints, must be verified. The length and width dimensions are nearly identical (14.00 x 13.00 mm versus 13.80 x 13.00 mm), so footprint compatibility is maintained.

Q: Do both parts have the same moisture sensitivity rating?

A: Yes. Both the HC7-1R5-R and PG0077.142NLT carry MSL 1 (Unlimited) ratings, indicating no moisture sensitivity restrictions. Standard handling and storage procedures apply to both parts.

Q: What is the saturation current behavior of each part?

A: The HC7-1R5-R has a saturation current (Isat) of 28.8 A, while the PG0077.142NLT is rated at 28 A. Both values are equivalent for practical circuit design purposes. Saturation current defines the maximum current level before inductance begins to degrade significantly. Both parts maintain saturation performance within 0.8 A of each other.