CD43NP-150MC Equivalent & Substitute Parts

Part Overview

The CD43NP-150MC is a 15 µH unshielded surface mount inductor manufactured by Sumida America Components Inc. This fixed inductor is designed for applications requiring 850 mA current handling capability with a maximum DC resistance of 235 mOhm. The component operates across the temperature range of -40°C to 100°C and is RoHS3 compliant. As an active product with established supply availability, equivalent parts may be required for design flexibility, supply chain optimization, or specific application performance requirements.

Substiute Parts

CD43NP-150MC

Sumida America Components Inc.In Stock: 1050CD43NP-150MC Datasheet

Current PartRFQ

SDR0403-150ML

Bourns Inc.In Stock: 16192SDR0403-150ML Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CD43NP-150MC is determined by strict equivalence across the following critical parameters:

Inductance Value: 15 µH with ±20% tolerance is the primary functional requirement. Substitute parts must match this specification exactly.

Current Rating: The main part supports 850 mA. Substitute parts must maintain equal or greater current handling capability to ensure safe operation under rated conditions.

DC Resistance: Maximum 235 mOhm establishes the upper limit for resistive losses. Substitute parts with equal or lower DCR values are acceptable.

Physical Package: Surface mount nonstandard package with dimensions 4.50mm x 4.00mm x 3.50mm (L x W x H) must be maintained for PCB layout compatibility.

Core Material: Ferrite core construction is specified. Substitute parts must use ferrite material to maintain electromagnetic performance characteristics.

Shielding Configuration: Unshielded design is required. Substitute parts must be unshielded to match the original electromagnetic profile.

Environmental Compliance: RoHS3 compliance and MSL Level 1 are mandatory for regulatory and manufacturing process compatibility.

The SDR0403-150ML from Bourns Inc. meets all these substitution criteria and is classified as a direct equivalent.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection: CD43NP-150MC remains the specified component for applications where Sumida supply chain integration is established and inventory availability is confirmed.

Substitute Selection: SDR0403-150ML from Bourns Inc. is a qualified equivalent for applications requiring alternative sourcing. The substitute part provides enhanced performance margins in current rating (920 mA vs. 850 mA) and extended operating temperature range (-40°C to 125°C vs. -40°C to 100°C). DC resistance remains within acceptable tolerance (240 mOhm vs. 235 mOhm maximum).

Both parts maintain active product status and full RoHS3 compliance, ensuring regulatory alignment and long-term availability. Selection between these parts should be based on supply chain requirements, inventory positioning, and established vendor relationships rather than functional performance differences.

Frequently Asked Questions (FAQ)

Q: Can SDR0403-150ML be used as a direct replacement for CD43NP-150MC?

A: Yes. Both parts share identical inductance values (15 µH), tolerance (±20%), core material (ferrite), shielding configuration (unshielded), package dimensions (4.50mm x 4.00mm x 3.50mm), and mounting type (surface mount). DC resistance and current ratings are within acceptable substitution parameters.

Q: What are the differences in current handling capability?

A: The CD43NP-150MC is rated for 850 mA, while the SDR0403-150ML supports 920 mA. The substitute part exceeds the original specification, providing additional current margin. Applications designed for 850 mA operation remain fully compatible with the substitute part.

Q: How do the DC resistance values compare?

A: CD43NP-150MC specifies 235 mOhm maximum, while SDR0403-150ML specifies 240 mOhm maximum. This 5 mOhm difference represents a 2.1% variance and falls within acceptable engineering tolerance for inductor substitution. Both values support equivalent power dissipation characteristics in typical circuit applications.

Q: Are there temperature range differences?

A: Yes. The CD43NP-150MC operates from -40°C to 100°C, while SDR0403-150ML operates from -40°C to 125°C. The substitute part provides extended high-temperature capability. Applications operating within the original -40°C to 100°C range experience no functional difference.

Q: Do both parts meet the same compliance standards?

A: Yes. Both CD43NP-150MC and SDR0403-150ML are RoHS3 compliant with MSL Level 1 (Unlimited) moisture sensitivity rating. Regulatory and manufacturing process compatibility is maintained across both parts.

Q: What is the physical package compatibility?

A: Both parts use identical nonstandard surface mount packages with dimensions of 4.50mm length x 4.00mm width x 3.50mm height (seated). PCB footprints and assembly processes require no modification when substituting between these parts.

Q: Are there differences in core construction?

A: The CD43NP-150MC uses ferrite core construction. The SDR0403-150ML is specified as drum core wirewound with ferrite material. Both configurations deliver equivalent electromagnetic performance for the 15 µH inductance specification and maintain unshielded design characteristics.