CDH113NP-470LC Equivalent & Substitute Parts

Part Overview

The CDH113NP-470LC is a 47 µH unshielded wirewound inductor manufactured by Sumida America Components Inc., rated for 910 mA continuous current with a maximum DC resistance of 220mOhm. This component is classified as obsolete, indicating discontinued production and limited availability. The part is mounted as a surface mount device in a nonstandard package measuring 11.20mm × 11.00mm × 3.70mm (max height).

Identifying equivalent substitute parts is necessary due to the obsolete status of the CDH113NP-470LC. While 937 pieces remain in current inventory, long-term supply cannot be guaranteed. Active alternative components with identical or superior electrical characteristics ensure design continuity and supply chain reliability.

Substiute Parts

CDH113NP-470LC

Sumida America Components Inc.In Stock: 955CDH113NP-470LC Datasheet

Current PartRFQ

CDH115NP-470KC

Sumida America Components Inc.In Stock: 8986CDH115NP-470KC Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CDH113NP-470LC is determined by the following critical parameters:

Primary Substitution Criteria:

• Inductance value: 47 µH (exact match required)
• Inductance tolerance: ±15% or tighter
• Current rating: equal to or greater than 910 mA
• DC resistance: equal to or less than 220mOhm
• Shielding configuration: unshielded
• Mounting type: surface mount
• Package footprint: 11.20mm × 11.00mm base dimensions
• Operating temperature range: must encompass -30°C to 100°C minimum
• Compliance: ROHS3 compliant, MSL 1

The CDH115NP-470KC meets all primary substitution criteria. It maintains the identical 47 µH inductance specification, improves current handling capacity to 1.36 A (exceeding the 910 mA requirement), reduces DC resistance to 130mOhm maximum (superior to 220mOhm), and extends the operating temperature range to -40°C to 100°C. The footprint dimensions remain identical at 11.20mm × 11.00mm, with only the seated height increasing from 3.70mm to 5.20mm. Both components are ROHS3 compliant with MSL 1 rating.

Parameter Comparison

Engineering Selection Recommendations

The CDH115NP-470KC is a direct functional substitute for the CDH113NP-470LC based on the following engineering factors:

Electrical Compatibility: Both components deliver identical 47 µH inductance at 1 kHz test frequency. The CDH115NP-470KC provides superior electrical performance through reduced DC resistance (130mOhm vs. 220mOhm) and increased current capacity (1.36 A vs. 910 mA), eliminating thermal stress in the application circuit.

Compliance & Certification: Both parts maintain ROHS3 compliance and MSL 1 rating, ensuring compatibility with modern manufacturing processes and long-term reliability in storage and deployment.

Supply Chain Status: The CDH115NP-470KC is classified as active product with 8,969 pieces in inventory, compared to the obsolete CDH113NP-470LC with limited stock of 937 pieces. This status difference ensures sustained availability for production and field replacement requirements.

Physical Considerations: The substitute maintains identical base footprint dimensions (11.20mm × 11.00mm), enabling direct PCB layout compatibility. The height increase from 3.70mm to 5.20mm must be verified against available vertical clearance in the application enclosure. This 1.50mm difference is the only physical constraint requiring design review.

Temperature Performance: The extended operating range of the CDH115NP-470KC (-40°C to 100°C vs. -30°C to 100°C) provides additional margin for applications operating at lower ambient temperatures.

Frequently Asked Questions (FAQ)

Q: Can the CDH115NP-470KC be used as a direct replacement for the CDH113NP-470LC without circuit modification?

A: Yes, from an electrical standpoint. Both components have identical 47 µH inductance and unshielded wirewound construction. The substitute's lower DC resistance and higher current rating represent performance improvements. However, the 1.50mm height increase must be verified against PCB clearance constraints before implementation.

Q: What is the significance of the inductance tolerance difference (±15% vs. ±10%)?

A: The CDH115NP-470KC provides tighter tolerance control, meaning the actual inductance value will remain closer to the nominal 47 µH specification. This improves circuit performance consistency and reduces design margin requirements in applications sensitive to inductance variation.

Q: Why does the DC resistance differ between these parts?

A: The CDH115NP-470KC uses a drum core construction with ferrite material, compared to the standard wirewound design of the CDH113NP-470LC. This construction difference results in lower DC resistance (130mOhm vs. 220mOhm), reducing I²R losses and heat generation during operation.

Q: Is the packaging difference significant?

A: The CDH113NP-470LC is supplied in nonstandard packaging, while the CDH115NP-470KC uses standard Tape & Reel (TR) format. This difference affects handling and assembly automation compatibility but does not impact electrical performance or PCB mounting.

Q: What is the maximum current I can safely apply to each component?

A: The CDH113NP-470LC is rated for 910 mA continuous current. The CDH115NP-470KC is rated for 1.36 A continuous current. Operating above these ratings will cause excessive heating and potential component failure.

Q: Are both components suitable for high-frequency applications?

A: Both components are tested at 1 kHz for inductance specification. Self-resonant frequency data is not provided in the component specifications. For applications requiring operation above 1 MHz, contact the manufacturer for frequency response characteristics.

Q: What is MSL 1 rating and why does it matter?

A: MSL (Moisture Sensitivity Level) 1 indicates unlimited shelf life without moisture baking requirements. Both components can be stored indefinitely in standard conditions without special handling, simplifying inventory management and reducing production preparation time.