HC7-R47-R Equivalent & Substitute Parts Reference

Part Overview

The HC7-R47-R is a 470 nH unshielded drum core wirewound inductor manufactured by Eaton - Electronics Division. This surface mount component is rated for 23.4 A continuous current with a maximum DC resistance of 1.6 mOhm and operates across the temperature range of -40°C to 155°C. The part is RoHS Compliant and carries an MSL rating of 1 (Unlimited), indicating no moisture sensitivity restrictions. The HC7-R47-R maintains Active product status with 982 units currently in stock.

Equivalent and substitute parts are identified when alternative inductors meet the core electrical and mechanical requirements for the application while maintaining compatibility with surface mount assembly processes and environmental specifications.

Substiute Parts

HC7-R47-R

Eaton - Electronics DivisionIn Stock: 1083HC7-R47-R Datasheet

Current PartRFQ

PG0077.401NLT

Pulse ElectronicsIn Stock: 1664PG0077.401NLT Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the HC7-R47-R are identified based on strict alignment with the following critical parameters:

Inductance Value: The substitute must fall within the ±20% tolerance band of 470 nH, establishing an acceptable range of 376 nH to 564 nH at the 100 kHz test frequency.

Current Rating: The substitute must support a minimum continuous current rating equal to or exceeding 23.4 A to ensure safe operation under specified load conditions.

DC Resistance: The substitute's maximum DC resistance must not exceed 1.6 mOhm to maintain equivalent power dissipation and thermal characteristics.

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

Shielding Configuration: The substitute must maintain unshielded construction to preserve EMI behavior and board layout compatibility.

Operating Temperature Range: The substitute must support the full -40°C to 155°C operating window or a subset thereof that covers the application's thermal requirements.

Mounting and Package: The substitute must be surface mount compatible with nonstandard package dimensions that fit the PCB footprint and height constraints.

Regulatory Compliance: The substitute must maintain RoHS compliance status and MSL rating of 1 or better.

Parameter Comparison

Engineering Selection Recommendations

PG0077.401NLT Substitution Criteria

The PG0077.401NLT from Pulse Electronics qualifies as a functional equivalent to the HC7-R47-R based on the following engineering parameters:

Electrical Compatibility: The 450 nH inductance of the PG0077.401NLT falls within the ±20% tolerance specification of the HC7-R47-R (acceptable range 376–564 nH), representing a 4.3% deviation. Both parts are tested at 100 kHz. The substitute's current rating of 45 A exceeds the 23.4 A requirement, providing operational margin. The DC resistance of 0.8 mOhm is superior to the 1.6 mOhm maximum, resulting in lower power dissipation.

Thermal and Environmental Considerations: The PG0077.401NLT operates across -40°C to 95°C, which is narrower than the HC7-R47-R range of -40°C to 155°C. Applications requiring operation above 95°C must retain the HC7-R47-R. For applications with maximum operating temperatures at or below 95°C, the substitute is thermally compatible.

Physical Integration: Both parts are surface mount, unshielded, nonstandard package inductors. The PG0077.401NLT is 0.008" (0.20mm) longer and 0.039" (1.00mm) taller than the HC7-R47-R. PCB layout and clearance verification is required to confirm footprint compatibility.

Regulatory and Compliance Status: The PG0077.401NLT carries ROHS3 Compliant status, meeting or exceeding the RoHS Compliant requirement of the HC7-R47-R. Both parts maintain MSL 1 (Unlimited) ratings, eliminating moisture sensitivity concerns.

Product Availability: The PG0077.401NLT is Active status with 1556 units in stock, providing supply continuity.

Frequently Asked Questions (FAQ)

Q: Can the PG0077.401NLT replace the HC7-R47-R in all applications?

A: The PG0077.401NLT is electrically and mechanically compatible for applications operating at temperatures up to 95°C. Applications requiring operation above 95°C must use the HC7-R47-R or verify that the substitute's reduced temperature range is acceptable. Physical footprint differences (0.20mm length, 1.00mm height) require PCB layout verification.

Q: What is the inductance tolerance impact of substitution?

A: Both parts carry ±20% tolerance at 100 kHz. The PG0077.401NLT nominal value of 450 nH is 4.3% lower than the HC7-R47-R nominal value of 470 nH. This difference falls within the combined tolerance band and is acceptable for most filter and impedance matching applications. Circuit-critical applications should perform SPICE simulation or bench testing to confirm performance.

Q: How do the DC resistance values affect circuit performance?

A: The PG0077.401NLT DC resistance of 0.8 mOhm is 50% lower than the HC7-R47-R maximum of 1.6 mOhm. This results in lower I²R power dissipation and reduced thermal generation. For high-current applications (near 23.4 A), the substitute provides improved thermal performance. No circuit redesign is required; the substitute is a direct drop-in from a resistance perspective.

Q: Are there physical mounting constraints with the PG0077.401NLT?

A: The PG0077.401NLT is 0.008" (0.20mm) longer and 0.039" (1.00mm) taller than the HC7-R47-R. Both dimensions are within typical PCB design tolerances. Verify that the increased height does not violate component-to-component clearance or conformal coating requirements. The width dimension is identical.

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

A: The HC7-R47-R has Isat of 51.9 A versus 48 A for the PG0077.401NLT. Both exceed the 23.4 A continuous rating by more than 2×, providing adequate margin for transient current spikes. The 3.9 A difference is negligible for standard power supply and filtering applications. Applications with extreme transient currents should verify the substitute's saturation margin.

Q: Are both parts RoHS compliant?

A: Yes. The HC7-R47-R is RoHS Compliant, and the PG0077.401NLT is ROHS3 Compliant. ROHS3 represents an updated compliance standard and meets or exceeds RoHS requirements. Both parts are suitable for regulated markets requiring RoHS certification.

Q: What is the moisture sensitivity level, and does it affect storage?

A: Both parts carry MSL 1 (Unlimited), indicating no moisture sensitivity. These inductors can be stored at room temperature and humidity without desiccant packaging or baking requirements prior to assembly. Standard warehouse storage conditions are acceptable.