HCM0503-R75-R Equivalent & Substitute Parts

Part Overview

The HCM0503-R75-R is a 750 nH shielded drum core wirewound inductor manufactured by Eaton - Electronics Division. This surface mount component is rated for 11.3 A continuous current with a maximum DC resistance of 9.35 mOhm and operates across the temperature range of -55°C to 125°C. The part is RoHS compliant, REACH unaffected, and classified as Active product status with 1124 units in current inventory.

Substitute parts are necessary when the primary component becomes unavailable, when supply chain constraints require alternative sourcing, or when design flexibility permits selection from multiple qualified manufacturers while maintaining electrical and mechanical compatibility.

Substiute Parts

HCM0503-R75-R

Eaton - Electronics DivisionIn Stock: 1180HCM0503-R75-R Datasheet

Current PartRFQ

PA4340.681NLT

Pulse ElectronicsIn Stock: 3220PA4340.681NLT Datasheet

DirectRFQ

IHLP2020CZERR68M01

Vishay DaleIn Stock: 1905IHLP2020CZERR68M01 Datasheet

SimilarRFQ

IHLP2020CZERR82M01

Vishay DaleIn Stock: 1904IHLP2020CZERR82M01 Datasheet

SimilarRFQ

SPM5030T-R75M

TDK CorporationIn Stock: 10452SPM5030T-R75M Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the HCM0503-R75-R is determined by the following critical parameters:

Primary Substitution Criteria:

• Inductance value: 750 nH (±20% tolerance permits 600–900 nH range)
• Current rating: minimum 11.3 A continuous
• DC resistance: maximum 9.35 mOhm
• Shielding: required
• Mounting type: Surface Mount
• Height constraint: maximum 0.118 inches (3.00 mm)
• Operating temperature: minimum -55°C to 125°C coverage

Substitute Classification:

Direct Equivalent (Identical Electrical & Mechanical Specifications):

• SPM5030T-R75M (TDK Corporation): Matches inductance (750 nH), current rating (11.3 A), DCR (9.35 mOhm), and height (3.00 mm). Drum core wirewound construction with metal core material. Operating temperature -40°C to 125°C.

Similar Substitutes (Inductance Variation Within Tolerance):

• IHLP2020CZERR68M01 (Vishay Dale): 680 nH inductance (within ±20% tolerance band), 10.2 A current rating, 8.96 mOhm DCR, 3.00 mm height. Molded construction. Operating temperature -55°C to 125°C.
• IHLP2020CZERR82M01 (Vishay Dale): 820 nH inductance (within ±20% tolerance band), 9.3 A current rating, 11.9 mOhm DCR, 3.00 mm height. Molded construction. Operating temperature -55°C to 125°C.

Conditional Substitute (Reduced Current Rating):

• PA4340.681NLT (Pulse Electronics): 680 nH inductance (within tolerance), 8.5 A current rating (below 11.3 A specification), 12 mOhm DCR, 3.00 mm height. Molded construction. Operating temperature -40°C to 125°C. AEC-Q200 rated.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection: SPM5030T-R75M (TDK Corporation)

The SPM5030T-R75M provides the closest electrical and mechanical match to the HCM0503-R75-R. Both components feature identical inductance (750 nH), current rating (11.3 A), and DC resistance (9.35 mOhm) specifications. Both employ drum core wirewound construction with shielding and maintain the same 3.00 mm seated height. The SPM5030T-R75M is ROHS3 compliant and REACH unaffected. The operating temperature range of -40°C to 125°C covers the majority of industrial applications; selection of this part is appropriate when the lower temperature limit of -40°C satisfies circuit requirements.

Secondary Selection: IHLP2020CZERR68M01 (Vishay Dale)

The IHLP2020CZERR68M01 operates within the ±20% inductance tolerance band at 680 nH and provides a current rating of 10.2 A with superior DC resistance of 8.96 mOhm. This molded construction part maintains full operating temperature coverage (-55°C to 125°C) and is ROHS3 compliant. Selection is appropriate for applications where the lower inductance value and improved DC resistance characteristics are acceptable within circuit design margins.

Tertiary Selection: IHLP2020CZERR82M01 (Vishay Dale)

The IHLP2020CZERR82M01 operates at 820 nH inductance (within tolerance) with a current rating of 9.3 A and DC resistance of 11.9 mOhm. This part maintains full operating temperature coverage (-55°C to 125°C) and is ROHS3 compliant. Selection is appropriate when the higher inductance value and reduced current rating remain within circuit design specifications.

Conditional Selection: PA4340.681NLT (Pulse Electronics)

The PA4340.681NLT is rated for only 8.5 A continuous current, which falls below the 11.3 A specification of the HCM0503-R75-R. This part is suitable only for applications where the actual circuit current demand is confirmed to be 8.5 A or lower. The part carries AEC-Q200 automotive qualification and is ROHS3 compliant. Operating temperature range is -40°C to 125°C.

Frequently Asked Questions (FAQ)

Q: Can the SPM5030T-R75M directly replace the HCM0503-R75-R without circuit modification?

A: The SPM5030T-R75M is electrically and mechanically equivalent to the HCM0503-R75-R with identical inductance, current rating, and DC resistance. Direct substitution is permissible. The operating temperature lower limit of -40°C (versus -55°C for the original part) must be verified against application requirements.

Q: What is the significance of the ±20% inductance tolerance for substitute selection?

A: The ±20% tolerance establishes the acceptable inductance range as 600–900 nH. Substitute parts with inductance values of 680 nH and 820 nH fall within this tolerance band and are electrically equivalent for circuit operation. The tolerance permits component substitution without circuit redesign when the substitute value remains within the specified range.

Q: Why does the PA4340.681NLT have a lower current rating than the HCM0503-R75-R?

A: The PA4340.681NLT is a molded construction inductor with different thermal and electrical characteristics compared to the drum core wirewound design of the HCM0503-R75-R. The 8.5 A rating reflects the maximum continuous current this specific design can safely handle. Substitution requires confirmation that actual circuit current does not exceed 8.5 A.

Q: Are all substitute parts RoHS and REACH compliant?

A: All listed substitute parts are ROHS3 compliant and REACH unaffected, matching the compliance status of the HCM0503-R75-R. All parts carry Moisture Sensitivity Level 1 (Unlimited), indicating no special moisture handling requirements during storage or assembly.

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

A: Drum core wirewound inductors (HCM0503-R75-R and SPM5030T-R75M) use a cylindrical core with wire wound around it, typically offering lower DC resistance and higher current ratings. Molded inductors (Vishay and Pulse parts) encapsulate the core and windings in a molded compound, providing compact form factors and consistent performance. Both construction types are shielded and suitable for surface mount applications.

Q: Can the Vishay IHLP2020CZERR68M01 and IHLP2020CZERR82M01 be used interchangeably?

A: These two Vishay parts have different inductance values (680 nH versus 820 nH) and current ratings (10.2 A versus 9.3 A). They are not interchangeable with each other. Each must be selected based on specific circuit inductance and current requirements. Both fall within the ±20% tolerance band of the original 750 nH specification.

Q: What inventory levels are available for each substitute part?

A: Current inventory levels are: SPM5030T-R75M (TDK) 10,400 units; IHLP2020CZERR68M01 (Vishay) 1,830 units; IHLP2020CZERR82M01 (Vishay) 1,814 units; PA4340.681NLT (Pulse) 3,127 units. The original HCM0503-R75-R has 1,124 units in stock.