MPC1040LR36C Equivalent & Substitute Parts

Part Overview

The MPC1040LR36C is a 360 nH shielded inductor manufactured by KEMET, designed for surface mount applications requiring high current handling up to 25.5 A with low DC resistance of 1.05 mOhm maximum. This component features a ferrite core construction in a 2-SMD, J-Lead package measuring 11.50mm × 10.00mm with a maximum seated height of 4.00mm.

The MPC1040LR36C is classified as obsolete. Equivalent and substitute parts are necessary to maintain design continuity and ensure component availability for production and repair applications. Substitute inductors must maintain electrical compatibility across inductance value, current rating, DC resistance, and mechanical form factor while meeting the same regulatory compliance standards.

Substiute Parts

MPC1040LR36C

KEMETIn Stock: 17381MPC1040LR36C Datasheet

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ETQ-P4LR36WFC

Panasonic Electronic ComponentsIn Stock: 2170ETQ-P4LR36WFC Datasheet

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IHLP4040DZERR36M11

Vishay DaleIn Stock: 1737IHLP4040DZERR36M11 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute inductors for the MPC1040LR36C must satisfy the following electrical and mechanical criteria:

Electrical Compatibility Requirements:

• Inductance value of 360 nH at 100 kHz test frequency
• Inductance tolerance of ±20%
• Shielded construction to maintain electromagnetic isolation
• Current rating sufficient to support 25.5 A continuous operation
• DC resistance not exceeding 1.05 mOhm maximum to ensure thermal performance equivalence
• Saturation current (Isat) at or above 30 A

Mechanical Compatibility Requirements:

• Surface mount technology with 2-SMD, J-Lead package configuration
• Physical dimensions of 11.50mm length × 10.00mm width
• Maximum seated height of 4.00mm
• Compatibility with standard PCB assembly processes

Regulatory and Environmental Compliance:

• ROHS3 compliance
• Moisture Sensitivity Level (MSL) of 1 (Unlimited)
• REACH Unaffected status
• ECCN classification of EAR99

The following substitute parts meet these criteria with variations in core material type and active product status.

Parameter Comparison

Engineering Selection Recommendations

ETQ-P4LR36WFC (Panasonic Electronic Components)

The ETQ-P4LR36WFC is an active product offering direct mechanical and electrical compatibility with the MPC1040LR36C. This substitute maintains identical physical dimensions (11.50mm × 10.00mm × 4.00mm maximum height) and package configuration (2-SMD, J-Lead). The inductance value, tolerance, and test frequency are identical. The current rating of 24 A is within acceptable operating margins for applications designed for 25.5 A, with DC resistance of 1.1 mOhm representing a 4.8% increase over the original specification. The metal composite drum core construction provides shielded performance equivalent to ferrite core designs. Full ROHS3 compliance, MSL 1 rating, and REACH Unaffected status ensure regulatory alignment. Active product status ensures long-term availability.

IHLP4040DZERR36M11 (Vishay Dale)

The IHLP4040DZERR36M11 is an active product providing electrical equivalence with enhanced current handling capability. This substitute maintains the 360 nH inductance value, ±20% tolerance, and 100 kHz test frequency. The current rating of 32 A exceeds the original 25.5 A specification, providing design margin. DC resistance of 1.15 mOhm represents a 9.5% increase. Physical dimensions differ slightly (10.80mm × 10.16mm versus 11.50mm × 10.00mm), with identical maximum seated height of 4.00mm. The package classification is listed as nonstandard, requiring verification of PCB footprint compatibility. The molded construction provides shielding equivalent to the original design. Operating temperature range of -55 to 125 °C exceeds the original -20 to 120 °C specification. Full ROHS3 compliance, MSL 1 rating, and REACH Unaffected status are maintained. Active product status ensures availability.

Selection Basis:

Both substitute parts maintain the critical electrical parameters of inductance, tolerance, shielding, and saturation current. The choice between ETQ-P4LR36WFC and IHLP4040DZERR36M11 depends on application-specific requirements: the Panasonic part offers exact mechanical compatibility with minimal DC resistance increase, while the Vishay Dale part provides enhanced current margin and extended temperature range at the cost of dimensional variation and nonstandard package classification.

Frequently Asked Questions (FAQ)

Q: Can the ETQ-P4LR36WFC be used as a direct replacement for the MPC1040LR36C?

A: The ETQ-P4LR36WFC maintains identical physical dimensions, package configuration, inductance value, and tolerance. DC resistance increases by 4.8% (1.1 mOhm versus 1.05 mOhm maximum). Current rating decreases by 1.5 A (24 A versus 25.5 A). These variations are within acceptable engineering tolerances for most applications. PCB footprint compatibility is direct.

Q: What is the significance of the current rating difference between the MPC1040LR36C (25.5 A) and ETQ-P4LR36WFC (24 A)?

A: The current rating represents the maximum continuous current the inductor can carry without exceeding thermal limits. The 1.5 A reduction in the Panasonic part requires verification that the application does not demand sustained operation above 24 A. For applications operating below 24 A, this difference is not operationally significant.

Q: Why does the IHLP4040DZERR36M11 have a nonstandard package classification?

A: The IHLP4040DZERR36M11 uses a molded construction with physical dimensions of 10.80mm × 10.16mm, which differs from the standard 11.50mm × 10.00mm footprint. This variation requires verification of PCB land pattern compatibility and may necessitate footprint adjustment in circuit board design files.

Q: Are all three inductors ROHS3 compliant?

A: Yes. The MPC1040LR36C, ETQ-P4LR36WFC, and IHLP4040DZERR36M11 are all ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating and REACH Unaffected status, ensuring regulatory equivalence across all three parts.

Q: What is the impact of DC resistance variation on circuit performance?

A: DC resistance affects thermal dissipation and voltage drop across the inductor. The MPC1040LR36C specifies 1.05 mOhm maximum, while substitutes range to 1.15 mOhm maximum. At 25.5 A, this represents a voltage drop increase of approximately 2.55 mV maximum. For low-impedance applications, this variation may be negligible; for precision circuits, thermal modeling is recommended.

Q: Can the IHLP4040DZERR36M11 be used in applications requiring the -20 to 120 °C operating range of the original part?

A: The IHLP4040DZERR36M11 specifies an operating temperature range of -55 to 125 °C, which encompasses the original -20 to 120 °C range. This part is suitable for applications within the original temperature specification and provides extended capability for wider temperature environments.

Q: What core material differences exist between the substitute parts?

A: The MPC1040LR36C uses ferrite core construction. The ETQ-P4LR36WFC uses metal composite drum core with wirewound design. The IHLP4040DZERR36M11 uses molded construction with core material not specified. All three designs provide shielded performance suitable for electromagnetic isolation requirements.