CDH113NP-220MC Equivalent & Substitute Parts

Part Overview

The CDH113NP-220MC is a 22 µH unshielded wirewound inductor manufactured by Sumida America Components Inc., rated for 1.25 A continuous current with a maximum DC resistance of 98 mOhm. This component is designed for surface mount applications in nonstandard package configurations. The part is currently classified as obsolete, making identification of compatible substitute components essential for ongoing production support and design continuity. Substitute parts must maintain the same inductance value, mounting type, and physical footprint while meeting or exceeding the electrical performance requirements of the original specification.

Substiute Parts

CDH113NP-220MC

Sumida America Components Inc.In Stock: 1103CDH113NP-220MC Datasheet

Current PartRFQ

CDH115NP-220LC

Sumida America Components Inc.In Stock: 857CDH115NP-220LC Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CDH113NP-220MC is based on the following critical parameters that must be maintained or improved:

Mandatory Matching Parameters:

• Inductance value: 22 µH (fixed requirement)
• Mounting type: Surface Mount (fixed requirement)
• Physical footprint: 11.20 mm × 11.00 mm (fixed requirement)
• Shielding classification: Unshielded (fixed requirement)

Allowable Parameter Variations:

• Current rating may be equal to or greater than 1.25 A
• DC resistance may be equal to or less than 98 mOhm
• Inductance tolerance may be tighter (lower percentage) or equal to ±20%
• Operating temperature range may be equal to or wider than -30°C to 100°C
• Product status may transition from obsolete to active

The CDH115NP-220LC qualifies as a substitute because it maintains all mandatory parameters while providing improved electrical performance through higher current rating (2.1 A vs. 1.25 A), lower DC resistance (60 mOhm vs. 98 mOhm), and active product status with continued manufacturing support.

Parameter Comparison

Engineering Selection Recommendations

The CDH115NP-220LC is a direct substitute for the CDH113NP-220MC based on electrical and mechanical compatibility. Both components are ROHS3 compliant and carry MSL Level 1 rating, ensuring equivalent environmental and regulatory compliance.

Primary Advantage: The CDH115NP-220LC is currently in active production status, providing assured supply chain continuity compared to the obsolete CDH113NP-220MC. This eliminates long-term availability risk.

Electrical Performance: The substitute part delivers superior electrical characteristics with 68% lower DC resistance (60 mOhm vs. 98 mOhm) and 68% higher current rating (2.1 A vs. 1.25 A). These improvements reduce power dissipation and thermal stress in the application circuit.

Physical Consideration: The substitute part has a maximum seated height of 5.20 mm compared to 3.70 mm for the original part. PCB layout and component clearance must be verified to accommodate this 1.50 mm height increase. The lateral footprint (11.20 mm × 11.00 mm) remains unchanged.

Tolerance Improvement: The CDH115NP-220LC offers tighter inductance tolerance (±15% vs. ±20%), providing improved circuit performance consistency across production batches.

Frequently Asked Questions (FAQ)

Q: Can the CDH115NP-220LC be used as a direct replacement in existing PCB designs?

A: The CDH115NP-220LC maintains identical lateral dimensions (11.20 mm × 11.00 mm) and inductance value (22 µH), making it mechanically and electrically compatible. However, the increased seated height (5.20 mm vs. 3.70 mm) requires verification of vertical clearance in the PCB assembly. If clearance is available, the part is a direct substitute.

Q: What is the significance of the lower DC resistance in the substitute part?

A: The CDH115NP-220LC has 60 mOhm maximum DC resistance compared to 98 mOhm in the CDH113NP-220MC. Lower DC resistance reduces resistive losses (I²R heating) in the inductor coil, resulting in improved efficiency and reduced thermal generation during operation at rated current levels.

Q: Why is product status (obsolete vs. active) important for component selection?

A: Active product status indicates ongoing manufacturing and supplier support. The CDH115NP-220LC, being active, ensures long-term availability, consistent quality, and predictable lead times. The obsolete CDH113NP-220MC may face supply discontinuation, requiring design migration to active alternatives.

Q: Are there any compliance or certification differences between these parts?

A: Both parts are ROHS3 compliant and carry identical Moisture Sensitivity Level 1 (Unlimited) ratings. No compliance or certification differences exist. Both parts meet the same environmental and regulatory standards.

Q: What does the ±15% inductance tolerance of the substitute mean compared to ±20%?

A: Inductance tolerance defines the acceptable range of actual inductance values around the nominal 22 µH specification. The CDH115NP-220LC tolerance of ±15% results in a range of 18.7 µH to 25.3 µH, while the CDH113NP-220MC tolerance of ±20% results in a range of 17.6 µH to 26.4 µH. Tighter tolerance in the substitute provides more predictable circuit performance.

Q: Is the higher current rating of the substitute part a disadvantage?

A: No. A higher current rating (2.1 A vs. 1.25 A) is not a disadvantage. It indicates the part can safely handle higher current levels without saturation or thermal damage. In applications requiring only 1.25 A, the substitute operates with additional thermal and electrical margin, improving reliability.