Murata Power Solutions 42652C Equivalent & Substitute Parts

Part Overview

The Murata Power Solutions 42652C is a 6.5 µH unshielded toroidal surface mount inductor rated for 12.4 A continuous current with 6mOhm maximum DC resistance. Designed for high-current applications requiring compact form factors, this component operates across -40°C to 125°C. The part is classified as obsolete, necessitating identification of active equivalent alternatives that maintain electrical and mechanical compatibility for ongoing production and repair applications.

Key Parameters

Parameter	Value
Inductance	6.5 µH
Current Rating	12.4 A
DC Resistance (DCR)	6mOhm Max
Type	Toroidal
Shielding	Unshielded
Mounting Type	Surface Mount
Operating Temperature Range	-40°C ~ 125°C
Frequency - Self Resonant	57 MHz
Size / Dimension	0.740" L x 0.740" W (18.80mm x 18.80mm)
Height - Seated (Max)	0.390" (9.90mm)
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution eligibility for the 42652C is determined by the following critical parameters:

Primary Electrical Criteria:

Inductance value: 6.5 µH (exact match required)
Current rating: minimum 12.4 A
DC resistance: maximum 6mOhm to 6.6mOhm range
Mounting type: Surface Mount (SMD)
Package type: Nonstandard toroidal form factor

Secondary Compatibility Factors:

Toroidal core construction
Operating temperature range overlap with application requirements
Self-resonant frequency characteristics suitable for intended frequency band

Two active alternatives meet these substitution criteria: the API Delevan HCTR-501 and the iNRCORE PL8170NLT. Both maintain the 6.5 µH inductance specification and support the required 12+ A current rating. The HCTR-501 introduces shielding (iron powder core) while the PL8170NLT preserves the unshielded topology of the original part.

Parameter Comparison

Parameter	42652C (Murata)	HCTR-501 (API Delevan)	PL8170NLT (iNRCORE)
Inductance	6.5 µH	6.5 µH	6.5 µH
Current Rating (Amps)	12.4 A	12 A	12.4 A
DC Resistance (DCR)	6mOhm Max	6.6mOhm Max	6.6mOhm Max
Type	Toroidal	Toroidal	Toroidal
Shielding	Unshielded	Shielded	Unshielded
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Operating Temperature Range	-40°C ~ 125°C	-30°C ~ 130°C	-55°C ~ 130°C
Frequency - Self Resonant	57 MHz	55 MHz	Not specified
Size / Dimension	0.740" L x 0.740" W (18.80mm x 18.80mm)	0.740" L x 0.740" W (18.80mm x 18.80mm)	0.900" L x 0.690" W (22.86mm x 17.53mm)
Height - Seated (Max)	0.390" (9.90mm)	0.400" (10.16mm)	0.520" (13.21mm)
Product Status	Obsolete	Active	Active
RoHS Status	Not specified	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

API Delevan HCTR-501: This substitute is recommended for applications where electromagnetic shielding is beneficial or required. The shielded iron powder core construction reduces radiated emissions and susceptibility to external magnetic fields. The part maintains identical footprint dimensions (18.80mm x 18.80mm) with minimal height increase (10.16mm vs. 9.90mm). Operating temperature range extends to 130°C, providing additional thermal margin. ROHS3 compliance and active product status ensure long-term availability and regulatory alignment.

iNRCORE PL8170NLT: This substitute preserves the unshielded topology of the original 42652C, making it suitable for applications where shielding is not required or where electromagnetic coupling is intentional. The part matches the original current rating (12.4 A) exactly and extends the operating temperature range to -55°C, providing superior low-temperature performance. However, the larger footprint (22.86mm x 17.53mm) and increased height (13.21mm) require PCB layout verification. ROHS3 compliance and active status support production continuity.

Both substitutes are REACH Unaffected and carry EAR99 ECCN classification, matching the regulatory profile of the original part.

Frequently Asked Questions (FAQ)

Q: Can the HCTR-501 be used as a direct replacement for the 42652C in all applications?

A: The HCTR-501 is electrically compatible (6.5 µH, 12 A rating, 6.6mOhm DCR). The primary difference is the addition of shielding. Applications sensitive to electromagnetic interference may benefit from this change. The 0.010" height increase (10.16mm vs. 9.90mm) requires verification against PCB clearance constraints. Current rating is 0.4 A lower; verify application does not exceed 12 A continuous.

Q: What are the footprint considerations for the PL8170NLT?

A: The PL8170NLT has a larger footprint (22.86mm x 17.53mm vs. 18.80mm x 18.80mm) and greater height (13.21mm vs. 9.90mm). PCB layout redesign may be necessary. This substitute is suitable only when physical space permits the larger dimensions.

Q: How do the DC resistance values compare?

A: The 42652C specifies 6mOhm maximum. Both substitutes specify 6.6mOhm maximum, representing a 0.6mOhm increase. For high-current applications, this translates to approximately 0.09 W additional power dissipation at 12 A (I²R loss). Thermal design verification is recommended for margin-critical applications.

Q: Are there temperature range implications?

A: The 42652C operates -40°C to 125°C. The HCTR-501 extends to -30°C to 130°C (narrower low-temperature range, higher high-temperature limit). The PL8170NLT extends to -55°C to 130°C (superior low-temperature performance). Select based on application temperature requirements.

Q: What is the significance of the shielding difference?

A: The 42652C and PL8170NLT are unshielded; the HCTR-501 is shielded with iron powder core. Shielding reduces radiated EMI and external magnetic field coupling. Applications in noise-sensitive circuits may require the shielded variant. Unshielded parts are suitable for general-purpose power conversion where EMI is not a primary concern.

Q: Are all substitutes RoHS compliant?

A: Yes. Both the HCTR-501 and PL8170NLT are ROHS3 compliant. The original 42652C RoHS status is not specified in available documentation.

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