CDH113NP-390LC Equivalent & Substitute Parts

Part Overview

The CDH113NP-390LC is a 39 µH unshielded wirewound inductor manufactured by Sumida America Components Inc. This surface mount component is rated for 970 mA continuous current with a maximum DC resistance of 170mOhm. The part operates across a temperature range of -30°C to 100°C and is RoHS3 compliant with MSL 1 rating.

This component is classified as obsolete. Locating equivalent or substitute inductors with matching or superior electrical characteristics is necessary for ongoing design support, production continuity, and long-term component availability.

Substiute Parts

CDH113NP-390LC

Sumida America Components Inc.In Stock: 1002CDH113NP-390LC Datasheet

Current PartRFQ

CDH115NP-390KC

Sumida America Components Inc.In Stock: 882CDH115NP-390KC Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CDH113NP-390LC is evaluated based on the following critical parameters:

Electrical Compatibility Criteria:

• Inductance value: 39 µH (fixed requirement)
• Current rating: Substitute must equal or exceed 970 mA
• DC resistance: Substitute must equal or be lower than 170mOhm
• Inductance tolerance: Substitute tolerance must be acceptable for circuit operation

Mechanical Compatibility Criteria:

• Mounting type: Surface Mount (required)
• Physical dimensions: 11.20mm L x 11.00mm W footprint (required)
• Height constraint: Seated height must not exceed available board space
• Package type: Nonstandard form factor

Environmental & Compliance Criteria:

• Operating temperature range: Substitute must cover or exceed -30°C ~ 100°C
• RoHS3 compliance: Required
• MSL rating: MSL 1 preferred for unlimited moisture sensitivity

The CDH115NP-390KC qualifies as a substitute based on matching inductance value, identical footprint dimensions, superior current rating (1.52 A vs. 970 mA), lower DC resistance (110mOhm vs. 170mOhm), and active product status with full RoHS3 compliance.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: CDH115NP-390KC

The CDH115NP-390KC is the qualified substitute for the obsolete CDH113NP-390LC based on the following engineering factors:

Electrical Performance: The substitute maintains the identical 39 µH inductance value required for circuit operation. The current rating of 1.52 A exceeds the original 970 mA specification, providing design margin. The DC resistance of 110mOhm is 35% lower than the original 170mOhm maximum, resulting in reduced power dissipation and improved efficiency.

Physical Compatibility: Both components share identical footprint dimensions (11.20mm x 11.00mm), ensuring PCB layout compatibility without redesign. The substitute height of 5.20mm is 1.50mm greater than the original 3.70mm; board clearance must be verified for applications with height constraints.

Product Status & Availability: The CDH115NP-390KC is classified as active product with current manufacturing and distribution. This ensures long-term component availability and supply chain continuity compared to the obsolete CDH113NP-390LC.

Compliance & Environmental: Both components are RoHS3 compliant with MSL 1 rating. The substitute extends the operating temperature range to -40°C ~ 100°C, providing enhanced low-temperature performance. The substitute is available in standard Tape & Reel packaging, supporting automated assembly processes.

Tolerance Consideration: The substitute inductance tolerance of ±10% is tighter than the original ±15%, providing improved circuit performance consistency.

Frequently Asked Questions (FAQ)

Q: Can the CDH115NP-390KC be used as a direct replacement for the CDH113NP-390LC?

A: The CDH115NP-390KC is electrically and mechanically compatible for most applications. Both components have identical inductance (39 µH), matching footprint dimensions (11.20mm x 11.00mm), and identical shielding characteristics. The substitute offers superior electrical performance with higher current rating and lower DC resistance. The primary consideration is the 1.50mm increase in seated height (5.20mm vs. 3.70mm); verify available board clearance before implementation.

Q: What are the key electrical advantages of the CDH115NP-390KC substitute?

A: The substitute provides three electrical improvements: (1) Current rating increased from 970 mA to 1.52 A, providing 57% additional capacity; (2) DC resistance reduced from 170mOhm to 110mOhm, decreasing power loss by approximately 35%; (3) Inductance tolerance tightened from ±15% to ±10%, improving circuit consistency.

Q: Are there any physical installation differences?

A: The footprint is identical, requiring no PCB layout changes. The seated height increases from 3.70mm to 5.20mm. Verify that the additional 1.50mm height does not conflict with component stacking, shielding cans, or board-to-board spacing in your assembly.

Q: Is the CDH115NP-390KC available in the same packaging format?

A: The substitute is supplied in Tape & Reel (TR) packaging, which is standard for automated assembly. The original CDH113NP-390LC packaging format is not specified in available data. Tape & Reel format is compatible with standard pick-and-place equipment.

Q: Do both components meet the same compliance standards?

A: Yes. Both the CDH113NP-390LC and CDH115NP-390KC are RoHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating. The substitute extends the operating temperature range from -30°C ~ 100°C to -40°C ~ 100°C, providing enhanced performance in low-temperature environments.

Q: Why is the original CDH113NP-390LC classified as obsolete?

A: The CDH113NP-390LC is no longer in active production. The CDH115NP-390KC represents the current generation equivalent from the same manufacturer with improved electrical specifications and active product status.

Q: What should be verified before implementing the substitute in production?

A: Verify: (1) PCB clearance for the increased 5.20mm seated height; (2) Circuit performance with the tighter ±10% inductance tolerance; (3) Thermal performance with the lower 110mOhm DC resistance in your specific application; (4) Compatibility with existing assembly processes and equipment for Tape & Reel packaging.