CDH74NP-220LC Equivalent & Substitute Parts

Part Overview

The CDH74NP-220LC is a 22 µH unshielded drum core wirewound inductor manufactured by Sumida America Components Inc. This surface mount component is rated for 1.7 A continuous current with a maximum DC resistance of 130 mOhm and operates across the temperature range of -40°C to 100°C. The part is Active in product status and ROHS3 compliant, making it suitable for modern electronic applications requiring fixed inductance in compact form factors. Equivalent and substitute parts are identified to provide design flexibility, inventory alternatives, and sourcing options when the primary part becomes unavailable or when design requirements permit parameter variations within acceptable engineering tolerances.

Substiute Parts

CDH74NP-220LC

Sumida America Components Inc.In Stock: 1158CDH74NP-220LC Datasheet

Current PartRFQ

SDR7045-220M

Bourns Inc.In Stock: 2104SDR7045-220M Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the CDH74NP-220LC is determined by strict alignment of the following critical parameters:

Primary Substitution Criteria:

• Inductance value: 22 µH (exact match required)
• Core type: Ferrite drum core, wirewound (exact match required)
• Shielding configuration: Unshielded (exact match required)
• Mounting technology: Surface mount (exact match required)

Secondary Compatibility Parameters:

• Current rating: Substitute must meet or exceed 1.7 A minimum
• DC resistance: Substitute must not exceed 130 mOhm maximum
• Operating temperature range: Substitute must cover or exceed -40°C to 100°C
• RoHS compliance: ROHS3 compliant status required
• Package classification: Nonstandard drum core format

The SDR7045-220M from Bourns Inc. satisfies all primary substitution criteria and maintains compatibility across secondary parameters with documented electrical and thermal specifications.

Parameter Comparison

Engineering Selection Recommendations

CDH74NP-220LC Selection Criteria: Select the CDH74NP-220LC when the application requires the full 1.7 A current rating and the specified physical dimensions are mandatory for PCB layout. This part is Active in production status with established supply chain availability (1087 Pcs in stock). ROHS3 compliance and MSL 1 rating confirm suitability for standard manufacturing and storage conditions.

SDR7045-220M Selection Criteria: The SDR7045-220M from Bourns Inc. is substitutable when the application current requirement does not exceed 1.4 A and the smaller footprint (7.00mm x 7.00mm versus 8.00mm x 7.30mm) provides design advantage. The lower maximum DC resistance (125 mOhm versus 130 mOhm) and extended operating temperature range (-40°C to 125°C versus -40°C to 100°C) represent performance improvements. This part is also Active in production status with higher inventory availability (2048 Pcs in stock). ROHS3 compliance and MSL 1 rating match the primary part specifications.

Substitution Feasibility: Substitution is feasible when circuit design permits operation at 1.4 A maximum current and when the reduced physical footprint does not conflict with PCB layout constraints. Both parts maintain identical inductance value, core material, shielding configuration, and mounting technology. Compliance certifications and moisture sensitivity ratings are equivalent.

Frequently Asked Questions (FAQ)

Q: Can the SDR7045-220M replace the CDH74NP-220LC in all applications?

A: Substitution is valid only when the application current requirement does not exceed 1.4 A. The CDH74NP-220LC is rated for 1.7 A continuous current, while the SDR7045-220M is rated for 1.4 A. If the circuit design operates at or above 1.5 A, the SDR7045-220M is not suitable. For applications operating below 1.4 A, substitution is permissible.

Q: What are the physical dimension differences between these parts?

A: The CDH74NP-220LC measures 8.00mm length × 7.30mm width × 5.20mm height (seated). The SDR7045-220M measures 7.00mm length × 7.00mm width × 4.80mm height (seated). The Bourns part is smaller in all three dimensions, which may provide PCB layout advantages in space-constrained designs.

Q: Are the inductance tolerances compatible?

A: The CDH74NP-220LC has ±15% tolerance, while the SDR7045-220M has ±20% tolerance. Both parts are specified at 22 µH nominal. The wider tolerance of the substitute part is acceptable in applications where the ±15% tolerance of the primary part is not a strict requirement. Circuit designs requiring tighter inductance tolerance should verify that the ±20% specification of the substitute meets performance criteria.

Q: Do both parts have identical RoHS and moisture sensitivity compliance?

A: Yes. Both the CDH74NP-220LC and SDR7045-220M are ROHS3 compliant and rated MSL 1 (Unlimited). They meet identical environmental and regulatory requirements for modern electronics manufacturing.

Q: What is the DC resistance difference between these inductors?

A: The CDH74NP-220LC has a maximum DC resistance of 130 mOhm, while the SDR7045-220M has a maximum DC resistance of 125 mOhm. The Bourns part exhibits lower resistance, which results in reduced power dissipation and improved efficiency in the circuit.

Q: Can the SDR7045-220M operate at the full temperature range of the CDH74NP-220LC?

A: The SDR7045-220M operates across -40°C to 125°C, which exceeds the CDH74NP-220LC operating range of -40°C to 100°C. The substitute part is suitable for applications requiring the full -40°C to 100°C range and provides additional thermal margin for higher temperature environments.

Q: Are both parts available in Tape & Reel packaging?

A: Yes. Both the CDH74NP-220LC and SDR7045-220M are supplied in Tape & Reel (TR) packaging, suitable for automated assembly processes.