HCP0703-4R7-R Equivalent & Substitute Parts

Part Overview

The HCP0703-4R7-R is a 4.7 µH shielded drum core wirewound inductor manufactured by Eaton - Electronics Division. This component is rated for 5.5 A continuous current with a maximum DC resistance of 40 mOhm and operates across the temperature range of -55°C to 125°C. The part is classified as obsolete, making equivalent and substitute components necessary for ongoing design support and procurement.

Substitute parts are identified based on matching electrical specifications (inductance value, current rating, DC resistance, saturation current) and mechanical compatibility (surface mount packaging, shielding, operating temperature range, and physical dimensions).

Key Parameters

Parameter	Value	Unit
Inductance	4.7	µH
Inductance Tolerance	±20%	-
Current Rating	5.5	A
Current - Saturation (Isat)	10	A
DC Resistance (DCR) Maximum	40	mOhm
Shielding	Shielded	-
Operating Temperature Range	-55°C to 125°C	-
Mounting Type	Surface Mount	-
Inductance Test Frequency	100	kHz
Moisture Sensitivity Level	1 (Unlimited)	-

Substitute Part Grouping Explanation

Substitute parts for the HCP0703-4R7-R are grouped into two categories based on substitution compatibility:

Direct Equivalent (Highest Compatibility): The HCM0703-4R7-R from Eaton - Electronics Division is a direct equivalent. It maintains identical electrical specifications (4.7 µH, 5.5 A, 40 mOhm DCR, 10 A Isat) and operates within the same temperature range (-55°C to 125°C). The primary difference is product status (active versus obsolete) and packaging format (Tape & Reel). Physical dimensions are comparable (7.10mm × 6.60mm × 3.00mm versus 7.30mm × 7.00mm × 3.00mm).

Functional Equivalents (Compatible Substitutes): The following parts meet the core electrical requirements of 4.7 µH inductance, shielded construction, surface mount packaging, and 100 kHz test frequency. Substitution is valid when the application tolerates minor variations in current rating, DC resistance, saturation current, or operating temperature range:

IHLP2525CZER4R7M01 (Vishay Dale): Molded inductor, 5.5 A, 40 mOhm DCR, -55°C to 125°C
MPLC0730L4R7 (KEMET): Wirewound, 5 A, 41 mOhm DCR, -20°C to 120°C
MPLCG0630L4R7 (KEMET): Drum core wirewound, 5.5 A, 41 mOhm DCR, -40°C to 125°C
MPLCH0740L4R7 (KEMET): Wirewound, 5.8 A, 33 mOhm DCR, -20°C to 120°C
SPM6530T-4R7M (TDK Corporation): Drum core wirewound, 5.6 A, 39.4 mOhm DCR, -40°C to 125°C
SRP7028A-4R7M (Bourns Inc.): Drum core wirewound, 5.5 A, 40 mOhm DCR, -40°C to 150°C

Parameter Comparison

Part Number	Manufacturer	Inductance (µH)	Tolerance	Current Rating (A)	Isat (A)	DCR Max (mOhm)	Shielding	Temp Range (°C)	Product Status
HCP0703-4R7-R	Eaton	4.7	±20%	5.5	10	40	Shielded	-55 to 125	Obsolete
HCM0703-4R7-R	Eaton	4.7	±20%	5.5	10	40	Shielded	-55 to 125	Active
IHLP2525CZER4R7M01	Vishay Dale	4.7	±20%	5.5	10	40	Shielded	-55 to 125	Active
MPLC0730L4R7	KEMET	4.7	±20%	5	5.6	41	Shielded	-20 to 120	Active
MPLCG0630L4R7	KEMET	4.7	±20%	5.5	5.4	41	Shielded	-40 to 125	Active
MPLCH0740L4R7	KEMET	4.7	±20%	5.8	6.5	33	Shielded	-20 to 120	Active
SPM6530T-4R7M	TDK Corporation	4.7	±20%	5.6	6.2	39.4	Shielded	-40 to 125	Active
SRP7028A-4R7M	Bourns Inc.	4.7	±20%	5.5	10	40	Shielded	-40 to 150	Active

Engineering Selection Recommendations

Primary Recommendation: HCM0703-4R7-R

The HCM0703-4R7-R is the recommended first choice for direct replacement of the obsolete HCP0703-4R7-R. Both parts are manufactured by Eaton - Electronics Division and share identical electrical specifications. The HCM0703-4R7-R is active in production with ROHS3 compliance and REACH unaffected status, ensuring long-term availability and regulatory compliance.

Secondary Recommendation: SRP7028A-4R7M

The SRP7028A-4R7M from Bourns Inc. provides an alternative with identical electrical performance (4.7 µH, 5.5 A, 40 mOhm DCR, 10 A Isat). This part extends the operating temperature range to -40°C to 150°C and includes AEC-Q200 automotive qualification. It is ROHS3 compliant and carries an extended temperature rating suitable for demanding applications.

Tertiary Recommendation: IHLP2525CZER4R7M01

The IHLP2525CZER4R7M01 from Vishay Dale matches all critical electrical parameters and operates across the full temperature range (-55°C to 125°C). This molded inductor construction offers an alternative to drum core designs. It is ROHS3 compliant with high inventory availability.

Alternative Selections for Specific Requirements:

MPLCG0630L4R7 (KEMET): Select when low DCR and low loss characteristics are prioritized. Maintains 5.5 A rating and extends temperature range to -40°C to 125°C.
MPLCH0740L4R7 (KEMET): Select when higher current capability (5.8 A) and lower DCR (33 mOhm) are required, accepting reduced saturation current (6.5 A) and narrower temperature range (-20°C to 120°C).
SPM6530T-4R7M (TDK Corporation): Select when extended temperature range (-40°C to 125°C) and high inventory availability are required.

All recommended substitutes are active products with ROHS3 compliance and REACH unaffected status.

Frequently Asked Questions (FAQ)

Q1: Can HCM0703-4R7-R directly replace HCP0703-4R7-R without circuit modification?

A: Yes. The HCM0703-4R7-R is a direct equivalent with identical inductance (4.7 µH), current rating (5.5 A), DC resistance (40 mOhm), saturation current (10 A), and operating temperature range (-55°C to 125°C). The primary difference is product status (active versus obsolete) and packaging format. No circuit modification is required.

Q2: What are the key electrical parameters that determine substitution compatibility?

A: Substitution compatibility is determined by: (1) inductance value and tolerance (4.7 µH ±20%), (2) continuous current rating (minimum 5.5 A), (3) DC resistance (maximum 40 mOhm), (4) saturation current (minimum 10 A), (5) shielded construction, and (6) operating temperature range coverage. All substitute parts listed meet these criteria.

Q3: Are there differences in physical dimensions between substitute parts?

A: Yes. While all parts are surface mount with 3.00 mm maximum height, lateral dimensions vary slightly. HCP0703-4R7-R measures 7.30mm × 7.00mm, while HCM0703-4R7-R measures 7.10mm × 6.60mm. Other substitutes range from 6.86mm × 6.47mm to 7.80mm × 6.70mm. Verify PCB layout compatibility before selection.

Q4: Which substitute offers the widest operating temperature range?

A: The SRP7028A-4R7M from Bourns Inc. extends the operating temperature range to -40°C to 150°C, compared to the original -55°C to 125°C. This part is suitable for high-temperature applications while maintaining all other electrical specifications.

Q5: What is the difference between drum core and molded inductor construction?

A: The HCP0703-4R7-R uses drum core wirewound construction with iron powder core material. The IHLP2525CZER4R7M01 uses molded construction. Both are shielded and meet the same electrical specifications. Molded construction may offer different EMI characteristics and mechanical robustness. Selection depends on application-specific requirements.

Q6: Are all substitute parts ROHS3 compliant?

A: Yes. All active substitute parts listed (HCM0703-4R7-R, IHLP2525CZER4R7M01, MPLC0730L4R7, MPLCG0630L4R7, MPLCH0740L4R7, SPM6530T-4R7M, and SRP7028A-4R7M) are ROHS3 compliant and REACH unaffected.

Q7: Can MPLC0730L4R7 be used as a substitute if the application requires 5.5 A continuous current?

A: MPLC0730L4R7 is rated for 5 A continuous current, which is below the original 5.5 A specification. This part is suitable only if the actual application current does not exceed 5 A. Verify circuit current requirements before selection.

Q8: What is the significance of saturation current (Isat) in inductor selection?

A: Saturation current defines the maximum current at which the inductor maintains its specified inductance value. The HCP0703-4R7-R has 10 A Isat. Substitutes with lower Isat values (such as MPLCG0630L4R7 at 5.4 A) may experience inductance degradation at higher currents. Select substitutes with Isat ratings equal to or greater than the original specification for equivalent performance.

Q9: Is the HCP0703-4R7-R available for new designs?

A: No. The HCP0703-4R7-R is classified as obsolete. For new designs, select from active substitute parts. HCM0703-4R7-R, SRP7028A-4R7M, or IHLP2525CZER4R7M01 are recommended for long-term design support and procurement stability.

Q10: What packaging formats are available for substitute parts?

A: Substitute parts are available in Tape & Reel (TR) and Cut Tape (CT) & Digi-Reel® formats. HCM0703-4R7-R and SRP7028A-4R7M are supplied in Tape & Reel. IHLP2525CZER4R7M01 and SPM6530T-4R7M are supplied in Cut Tape & Digi-Reel®. Verify packaging compatibility with assembly equipment before procurement.

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