CD75NP-221KC Equivalent & Substitute Parts

Part Overview

The CD75NP-221KC is a 220 µH unshielded surface mount inductor manufactured by Sumida America Components Inc. This fixed inductor is designed for applications requiring 490 mA current rating with a maximum DC resistance of 960 mOhm. The component operates across the temperature range of -40°C to 100°C and is RoHS3 compliant. As an active product with established inventory availability, substitute parts may be required for supply chain continuity, design flexibility, or regional sourcing considerations.

Substiute Parts

CD75NP-221KC

Sumida America Components Inc.In Stock: 1490CD75NP-221KC Datasheet

Current PartRFQ

SDR0805-221KL

Bourns Inc.In Stock: 3671SDR0805-221KL Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CD75NP-221KC is determined by strict equivalence across the following critical parameters:

Inductance Value: 220 µH at 1 kHz test frequency with ±10% tolerance is the primary functional requirement.

Current Rating: 490 mA minimum current rating ensures the substitute can handle the same load conditions without saturation or thermal stress.

DC Resistance: 960 mOhm maximum DCR maintains electrical performance and power dissipation characteristics within the original design envelope.

Core Material: Ferrite core construction provides consistent magnetic properties and temperature stability.

Shielding Configuration: Unshielded topology must be maintained to preserve electromagnetic coupling and interference characteristics in the target application.

Operating Temperature Range: The substitute must support at least the -40°C to 100°C range specified for the main part.

Surface Mount Packaging: Both components must use surface mount technology for PCB assembly compatibility.

Compliance Standards: RoHS3 compliance and MSL 1 rating ensure regulatory and manufacturing process compatibility.

The SDR0805-221KL from Bourns Inc. meets all these criteria and is classified as a direct substitute.

Parameter Comparison

Engineering Selection Recommendations

The SDR0805-221KL qualifies as a direct substitute for the CD75NP-221KC based on electrical and mechanical parameter equivalence. Both components are active products with RoHS3 compliance and MSL 1 rating, ensuring regulatory alignment and manufacturing process compatibility.

The SDR0805-221KL provides an extended operating temperature range (-40°C to 125°C) compared to the CD75NP-221KC (-40°C to 100°C), offering additional thermal margin for applications operating at elevated temperatures. This extended range does not create incompatibility; it represents a superset of the original specification.

Both inductors maintain identical inductance values, current ratings, and DC resistance specifications at the 1 kHz test frequency. Surface mount packaging and tape & reel delivery format ensure seamless integration into existing PCB assembly processes.

Selection between these components should be based on supplier availability, lead time requirements, and cost considerations, as all critical electrical and mechanical parameters are equivalent.

Frequently Asked Questions (FAQ)

Q: Can the SDR0805-221KL replace the CD75NP-221KC in existing designs without circuit modification?

A: Yes. The SDR0805-221KL meets all electrical specifications of the CD75NP-221KC, including inductance value, current rating, and DC resistance. No circuit modifications are required for direct substitution.

Q: What is the significance of the extended temperature range in the SDR0805-221KL?

A: The SDR0805-221KL operates to 125°C versus 100°C for the CD75NP-221KC. This extended range provides additional thermal margin but does not affect compatibility in applications designed for the original -40°C to 100°C range.

Q: Are the physical dimensions compatible between these two inductors?

A: Both inductors use nonstandard surface mount packages with similar footprints. The CD75NP-221KC measures 0.307" L x 0.276" W x 0.217" H (7.80mm x 7.00mm x 5.50mm). The SDR0805-221KL measures 0.307" Dia x 0.209" H (7.80mm x 5.30mm). Verify PCB layout compatibility with your specific design before implementation.

Q: Do both inductors meet the same compliance standards?

A: Yes. Both the CD75NP-221KC and SDR0805-221KL are RoHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating. Both are classified under ECCN EAR99 for export control purposes.

Q: What is the basis for substitution between these two parts?

A: Substitution is based on strict equivalence of inductance value (220 µH ±10%), current rating (490 mA), DC resistance (960 mOhm maximum), core material (ferrite), shielding configuration (unshielded), and operating temperature range compatibility. Both components are surface mount, tape & reel packaged, and maintain identical electrical performance at the 1 kHz test frequency.

Q: Are there any performance differences in Q factor or self-resonant frequency?

A: The SDR0805-221KL provides specified Q factor (12 @ 796 kHz) and self-resonant frequency (5 MHz) data. The CD75NP-221KC does not include these parameters in the provided specifications. Both inductors are functionally equivalent for the specified 220 µH, 490 mA application.