RCR108DNP-331L Equivalent & Substitute Parts

Part Overview

The RCR108DNP-331L is a 330 µH shielded inductor manufactured by Sumida America Components Inc., rated for 500 mA continuous current with a maximum DC resistance of 860mOhm. This through-hole radial component features ferrite core construction and operates across the temperature range of -40°C to 85°C. The part is classified as obsolete, necessitating identification of active equivalent alternatives that maintain functional compatibility within the same electrical and mechanical specifications.

Substiute Parts

RCR108DNP-331L

Sumida America Components Inc.In Stock: 982RCR108DNP-331L Datasheet

Current PartRFQ

RCR110DNP-331L

Sumida America Components Inc.In Stock: 1160RCR110DNP-331L Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RCR108DNP-331L is based on strict electrical and mechanical parameter alignment within the RCR series family. The primary substitute, RCR110DNP-331L, maintains compatibility through the following criteria:

Critical Matching Parameters:

• Inductance value: 330 µH (identical)
• Inductance tolerance: ±15% (identical)
• Core material: Ferrite (identical)
• Shielding: Shielded (identical)
• Mounting type: Through hole radial (identical)
• Operating temperature range: -40°C to 85°C (identical)
• Inductance test frequency: 1 kHz (identical)
• RoHS compliance: ROHS3 (identical)
• Moisture sensitivity: MSL 1 (identical)

Allowable Parameter Variations:

• Current rating: 500 mA (main part) to 610 mA (substitute) — higher rating acceptable for same inductance value
• DC resistance: 860mOhm Max (main part) to 510mOhm Max (substitute) — lower resistance acceptable
• Physical dimensions: Minor height variation (8.50mm to 10.50mm) within radial package tolerance
• Product status: Obsolete to Active — substitute is production-active

Parameter Comparison

Engineering Selection Recommendations

The RCR110DNP-331L serves as the direct substitute for the obsolete RCR108DNP-331L based on electrical equivalence and regulatory compliance. Both components are ROHS3 compliant with MSL 1 rating, ensuring compatibility in modern manufacturing environments.

The substitute part provides superior electrical performance through reduced DC resistance (510mOhm vs. 860mOhm), resulting in lower power dissipation at equivalent current levels. The increased current rating (610 mA vs. 500 mA) provides additional design margin without compromising inductance value or core material properties.

Physical compatibility is maintained through identical radial package diameter (10.00mm). The height increase of 2mm (8.50mm to 10.50mm) must be verified against PCB layout constraints and clearance requirements in the target application. Both components feature identical operating temperature ranges and inductance test frequencies, ensuring functional equivalence in circuit operation.

The active production status of RCR110DNP-331L ensures long-term availability and supply chain continuity compared to the obsolete main part.

Frequently Asked Questions (FAQ)

Q: Can RCR110DNP-331L directly replace RCR108DNP-331L in all applications?

A: Electrical substitution is valid for applications where the 2mm height difference (8.50mm to 10.50mm) does not create PCB layout conflicts. The lower DC resistance and higher current rating of the substitute provide equivalent or improved performance at the specified 330 µH inductance value.

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

A: The RCR110DNP-331L exhibits 510mOhm maximum DC resistance compared to 860mOhm in the main part. This reduction decreases resistive losses and heat generation at equivalent current levels, improving overall circuit efficiency without altering the 330 µH inductance specification.

Q: Are there packaging differences between these parts?

A: Both parts use through-hole radial mounting with identical 10.00mm diameter. The RCR110DNP-331L is supplied in Tape & Reel (TR) packaging, while the RCR108DNP-331L packaging format is not specified. The radial configuration and lead count remain compatible for standard PCB through-hole assembly.

Q: Do both parts meet current regulatory requirements?

A: Yes. Both RCR108DNP-331L and RCR110DNP-331L are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating, meeting current environmental and reliability standards for electronic component manufacturing.

Q: What is the impact of the higher current rating on circuit design?

A: The RCR110DNP-331L 610 mA rating accommodates applications previously limited to 500 mA with the main part. This provides design flexibility for circuits requiring higher current handling without changing the core inductance or ferrite material properties.

Q: How do the self-resonant frequencies compare?

A: The main part specifies 3.51 MHz self-resonant frequency. The substitute part does not provide this specification in available data. Both parts are tested at 1 kHz inductance frequency, ensuring measurement consistency across the specified operating range.