HCM1104-1R0-R Equivalent & Substitute Parts

Part Overview

The HCM1104-1R0-R is a 1 µH shielded drum core wirewound inductor manufactured by Eaton - Electronics Division. This surface mount component is rated for 18 A continuous current with a maximum DC resistance of 3.3 mOhm and operates across the temperature range of -55°C to 125°C. The part is RoHS Compliant and carries an MSL rating of 1 (Unlimited), indicating suitability for standard storage and handling conditions.

The HCM1104-1R0-R maintains Active product status with 2882 pieces in current inventory. Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be achieved within the specified parameter tolerances, allowing for design flexibility and supply chain optimization.

Substiute Parts

HCM1104-1R0-R

Eaton - Electronics DivisionIn Stock: 2937HCM1104-1R0-R Datasheet

Current PartRFQ

PA4342.102NLT

Pulse ElectronicsIn Stock: 2676PA4342.102NLT Datasheet

DirectRFQ

SRP1038A-1R0M

Bourns Inc.In Stock: 6691SRP1038A-1R0M Datasheet

DirectRFQ

IHLP4040DZER1R0M01

Vishay DaleIn Stock: 18272IHLP4040DZER1R0M01 Datasheet

SimilarRFQ

IHLP4040DZER1R0M11

Vishay DaleIn Stock: 6776IHLP4040DZER1R0M11 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the HCM1104-1R0-R are classified based on strict alignment with the following critical parameters:

Primary Substitution Criteria:

• Inductance value: 1 µH (±20% tolerance)
• Current rating: 18 A minimum continuous rating
• DC resistance: 3.3 mOhm maximum
• Shielding: Shielded construction required
• Mounting: Surface mount, nonstandard package
• Height: 4.00 mm seated maximum
• Test frequency: 100 kHz

Direct Substitutes maintain all primary electrical and mechanical parameters within specification limits. These parts are functionally interchangeable in applications where the HCM1104-1R0-R is specified.

Similar Substitutes meet the core inductance, current, and shielding requirements but may exhibit variations in secondary parameters such as saturation current, DCR tolerance, or operating temperature range. Selection of similar substitutes requires verification that application-specific requirements accommodate these parameter differences.

Parameter Comparison

Engineering Selection Recommendations

PA4342.102NLT (Pulse Electronics) - Direct Substitute

The PA4342.102NLT is a direct electrical and mechanical equivalent to the HCM1104-1R0-R. Both parts share identical inductance (1 µH), current rating (18 A), and maximum DCR (3.3 mOhm). The PA4342.102NLT uses molded construction versus the HCM1104-1R0-R's drum core design, but maintains equivalent shielding and thermal performance within the overlapping temperature range (-40°C to 125°C). The part carries ROHS3 Compliant status with 2659 pieces in inventory. Selection is appropriate for applications where the lower temperature limit of -40°C is acceptable.

SRP1038A-1R0M (Bourns Inc.) - Direct Substitute

The SRP1038A-1R0M meets all primary substitution criteria with 1 µH inductance, 18 A current rating, and 3.3 mOhm maximum DCR. This drum core wirewound inductor shares the same core material category as the HCM1104-1R0-R and provides extended operating temperature range (-40°C to 150°C). The part includes AEC-Q200 automotive qualification and provides measured Q factor (20 @ 100kHz) and self-resonant frequency (47MHz) data. ROHS3 Compliant status applies. Inventory availability is 6600 pieces. This part is suitable for applications requiring automotive-grade reliability or extended high-temperature operation.

IHLP4040DZER1R0M01 (Vishay Dale) - Similar Substitute

The IHLP4040DZER1R0M01 maintains 1 µH inductance and shielded molded construction but exhibits a reduced current rating of 17.5 A and increased maximum DCR of 4.1 mOhm compared to the HCM1104-1R0-R. This part is suitable for applications where the 17.5 A rating is sufficient and the higher DCR is acceptable. Operating temperature range (-55°C to 125°C) matches the HCM1104-1R0-R. ROHS3 Compliant status applies. Inventory availability is 18254 pieces.

IHLP4040DZER1R0M11 (Vishay Dale) - Similar Substitute

The IHLP4040DZER1R0M11 provides 1 µH inductance with enhanced current rating of 25 A and reduced maximum DCR of 2.5 mOhm. However, the saturation current (Isat) is specified at 20 A, which is lower than the HCM1104-1R0-R's 28 A rating. This part is applicable to applications requiring lower DCR and higher continuous current capacity but where saturation current limitations do not constrain performance. Operating temperature range (-55°C to 125°C) matches the HCM1104-1R0-R. ROHS3 Compliant status applies. Inventory availability is 6695 pieces.

Frequently Asked Questions (FAQ)

Q: Can the PA4342.102NLT replace the HCM1104-1R0-R in all applications?

A: The PA4342.102NLT is electrically and mechanically equivalent for applications operating within the temperature range -40°C to 125°C. Applications requiring operation below -40°C must use the HCM1104-1R0-R or alternative parts with extended low-temperature ratings.

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

A: Drum core inductors use a cylindrical ferrite or powder core with wire wound around it, while molded inductors encapsulate the core and windings in a molded compound. Both constructions achieve shielding and meet the specified electrical parameters. Selection between types depends on application-specific thermal management and mechanical mounting requirements.

Q: Is the SRP1038A-1R0M suitable for automotive applications?

A: Yes. The SRP1038A-1R0M carries AEC-Q200 automotive qualification, making it suitable for automotive-grade applications. The HCM1104-1R0-R does not specify automotive qualification.

Q: Why does the IHLP4040DZER1R0M11 have a lower saturation current than the HCM1104-1R0-R?

A: The IHLP4040DZER1R0M11 is optimized for lower DCR (2.5 mOhm) and higher continuous current capacity (25 A), which results in a different core design with lower saturation current (20 A). Applications must verify that peak current demands do not exceed the saturation limit.

Q: Are all substitute parts RoHS compliant?

A: Yes. The HCM1104-1R0-R is RoHS Compliant, and all listed substitute parts carry either RoHS Compliant or ROHS3 Compliant status, ensuring regulatory compliance across all options.

Q: What is MSL rating and why is it important?

A: MSL (Moisture Sensitivity Level) rating indicates the component's sensitivity to moisture during storage and handling. All listed parts carry MSL 1 (Unlimited), meaning they can be stored and handled under standard conditions without special moisture control measures.

Q: Can I use IHLP4040DZER1R0M01 if my application requires 18 A continuous current?

A: The IHLP4040DZER1R0M01 is rated for 17.5 A continuous current, which is 0.5 A below the HCM1104-1R0-R specification. Use of this part in applications requiring 18 A continuous current is not recommended. Direct substitutes (PA4342.102NLT or SRP1038A-1R0M) are appropriate for this requirement.

Q: What is the significance of Q factor and self-resonant frequency data?

A: Q factor (quality factor) and self-resonant frequency are secondary performance parameters that characterize inductor behavior at specific frequencies. The SRP1038A-1R0M provides these values (Q = 20 @ 100kHz, SRF = 47MHz), while other parts do not specify them. These parameters are relevant for high-frequency applications or noise filtering circuits where inductor performance beyond basic inductance is critical.