HCM1104-100-R Equivalent & Substitute Parts

Part Overview

The HCM1104-100-R is a 10 µH shielded drum core wirewound inductor manufactured by Eaton - Electronics Division. This surface mount component is rated for 7.5 A continuous current with a maximum DC resistance of 30 mOhm and operates across the temperature range of -55°C to 125°C. The part is RoHS compliant and classified as Active product status. Substitute parts are identified when equivalent electrical and mechanical specifications are required due to inventory constraints, supply chain considerations, or design flexibility within the allowed parameter tolerances.

Key Parameters

Parameter	Value	Unit
Inductance	10	µH
Inductance Tolerance	±20%	—
Current Rating	7.5	A
DC Resistance (DCR) Maximum	30	mOhm
Saturation Current (Isat)	8.5	A
Shielding	Shielded	—
Operating Temperature Range	-55 to 125	°C
Mounting Type	Surface Mount	—
Package Type	Nonstandard	—
Inductance Test Frequency	100	kHz
RoHS Status	RoHS Compliant	—
Moisture Sensitivity Level	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitute parts for the HCM1104-100-R are classified into two categories based on electrical parameter alignment:

Direct Substitutes meet all critical electrical specifications: 10 µH inductance at ±20% tolerance, 7.5 A current rating, and 30 mOhm maximum DC resistance. These parts maintain identical functional performance within the specified parameter window.

Similar Substitutes share the core inductance value of 10 µH and shielded construction but exhibit variations in one or more of the following parameters: current rating (6.5 A to 7.5 A), DC resistance (30.5 mOhm to 36.5 mOhm), or saturation current (7.1 A to 12 A). These parts are suitable when the application tolerates the specified parameter deviations.

The substitution logic is based strictly on:

Inductance value: 10 µH
Inductance tolerance: ±20%
Shielding requirement: Shielded
Mounting type: Surface Mount
Package class: Nonstandard
Inductance test frequency: 100 kHz

Parameter Comparison

Manufacturer Part Number	Manufacturer	Type	Inductance (µH)	Current Rating (A)	DCR Max (mOhm)	Isat (A)	Temp Range (°C)	RoHS Status	Substitution Category
HCM1104-100-R	Eaton - Electronics Division	Drum Core, Wirewound	10	7.5	30	8.5	-55 to 125	RoHS Compliant	Reference Part
PA4342.103NLT	Pulse Electronics	Molded	10	7.5	30	12	-40 to 125	ROHS3 Compliant	Direct Substitute
SRP1038A-100M	Bourns Inc.	Drum Core, Wirewound	10	7.5	30	12	-40 to 150	ROHS3 Compliant	Direct Substitute
IHLP4040DZER100M01	Vishay Dale	Molded	10	6.8	36.5	12	-55 to 125	ROHS3 Compliant	Similar Substitute
IHLP4040DZER100M11	Vishay Dale	Molded	10	7.5	30.5	7.1	-55 to 125	ROHS3 Compliant	Similar Substitute
IHLP4040DZER100M1A	Vishay Dale	Metal Composite	10	7.5	30.5	7.1	-55 to 125	ROHS3 Compliant	Similar Substitute
IHLP4040DZER100M51	Vishay Dale	Molded	10	6.5	33.06	8.5	-55 to 125	ROHS3 Compliant	Similar Substitute
IHLP4040DZER100M5A	Vishay Dale	Molded	10	6.5	33.06	8.5	-55 to 125	ROHS3 Compliant	Similar Substitute
IHLP4040DZER100MA1	Vishay Dale	Metal Composite	10	6.8	36.5	12	-55 to 125	ROHS3 Compliant	Similar Substitute

Engineering Selection Recommendations

Direct Substitutes PA4342.103NLT and SRP1038A-100M are functionally equivalent to the HCM1104-100-R within the specified electrical parameters. Both parts maintain 10 µH inductance, 7.5 A current rating, and 30 mOhm maximum DC resistance. PA4342.103NLT is manufactured by Pulse Electronics and carries ROHS3 compliance with operating temperature range of -40°C to 125°C. SRP1038A-100M is manufactured by Bourns Inc., carries ROHS3 compliance and AEC-Q200 rating, with extended operating temperature range of -40°C to 150°C.

Similar Substitutes from Vishay Dale (IHLP4040DZER100M series) are suitable when parameter deviations are acceptable within the application design margins. IHLP4040DZER100M11 and IHLP4040DZER100M1A maintain the 7.5 A current rating with DCR of 30.5 mOhm, representing minimal deviation from the reference part. IHLP4040DZER100M01 and IHLP4040DZER100MA1 operate at 6.8 A with DCR of 36.5 mOhm. IHLP4040DZER100M51 and IHLP4040DZER100M5A operate at 6.5 A with DCR of 33.06 mOhm. All Vishay Dale variants carry ROHS3 compliance and operate within the -55°C to 125°C temperature range matching the reference part.

Selection should prioritize parts with Active product status and compliance certifications matching the application requirements. SRP1038A-100M includes AEC-Q200 rating for automotive applications. IHLP4040DZER100M1A and IHLP4040DZER100M5A include AEC-Q200 rating.

Frequently Asked Questions (FAQ)

Q: Can PA4342.103NLT replace HCM1104-100-R in all applications?

A: PA4342.103NLT meets all electrical specifications of the HCM1104-100-R: 10 µH inductance, 7.5 A current rating, and 30 mOhm maximum DC resistance. The operating temperature range differs (-40°C to 125°C versus -55°C to 125°C). Substitution is valid when the application does not require operation below -40°C.

Q: What is the difference between Direct and Similar substitutes?

A: Direct substitutes (PA4342.103NLT and SRP1038A-100M) maintain identical electrical specifications: 10 µH, 7.5 A, and 30 mOhm DCR. Similar substitutes deviate in current rating (6.5 A to 6.8 A) or DCR (30.5 mOhm to 36.5 mOhm) while maintaining the 10 µH inductance value. Similar substitutes are suitable when the application design accommodates these parameter variations.

Q: Is SRP1038A-100M suitable for automotive applications?

A: SRP1038A-100M carries AEC-Q200 rating and is manufactured by Bourns Inc. with ROHS3 compliance. This part is suitable for automotive applications requiring the specified electrical parameters and compliance certifications.

Q: What is the significance of the Isat (saturation current) parameter?

A: Saturation current indicates the current level at which the inductor begins to lose inductance due to core saturation. The HCM1104-100-R has Isat of 8.5 A. Direct substitutes PA4342.103NLT and SRP1038A-100M have higher Isat values (12 A), providing greater margin. Similar substitutes vary from 7.1 A to 12 A. Selection should ensure Isat exceeds the maximum current expected in the application.

Q: Can IHLP4040DZER100M51 be used if the application requires 7.5 A continuous current?

A: IHLP4040DZER100M51 is rated for 6.5 A continuous current, which is below the 7.5 A requirement of the HCM1104-100-R. This part is not suitable for applications requiring 7.5 A continuous operation. Use Direct substitutes or Similar substitutes rated for 7.5 A (IHLP4040DZER100M11 or IHLP4040DZER100M1A).

Q: What does the ±20% inductance tolerance mean?

A: The ±20% tolerance indicates that the actual inductance value may vary from 8 µH to 12 µH while still meeting the specification. All listed substitute parts share this tolerance, ensuring compatibility within the specified inductance window.

Q: Are all substitute parts RoHS compliant?

A: Yes. The reference part HCM1104-100-R is RoHS Compliant. All Direct and Similar substitute parts carry ROHS3 Compliant status, meeting current RoHS requirements.

Q: What is the package size difference between HCM1104-100-R and IHLP4040DZER100M series?

A: HCM1104-100-R dimensions are 0.437" L x 0.394" W x 0.157" H (11.10mm x 10.00mm x 4.00mm). IHLP4040DZER100M series dimensions are 0.425" L x 0.400" W x 0.157" H (10.80mm x 10.16mm x 4.00mm). Both are classified as Nonstandard package type with identical height. Dimensional differences are minimal and should be verified against PCB layout constraints.

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