RCR108DNP-681L Equivalent & Substitute Parts

Part Overview

The RCR108DNP-681L is a 680 µH shielded inductor manufactured by Sumida America Components Inc., rated for 340 mA maximum current with a DC resistance of 1.53 Ohm maximum. This component features a ferrite core, radial through-hole mounting configuration, and operates across the temperature range of -40°C to 85°C. The part is classified as obsolete, necessitating identification of equivalent substitute components that maintain functional compatibility while ensuring continued supply availability and compliance with current manufacturing standards.

Substiute Parts

RCR108DNP-681L

Sumida America Components Inc.In Stock: 858RCR108DNP-681L Datasheet

Current PartRFQ

RCR110DNP-681L

Sumida America Components Inc.In Stock: 890RCR110DNP-681L Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RCR108DNP-681L is determined by the following critical parameters:

Primary Matching Criteria:

• Inductance value: 680 µH (exact match required)
• Tolerance: ±15% (identical specification)
• Core material: Ferrite (identical specification)
• Shielding: Shielded (identical specification)
• Mounting type: Through Hole (identical specification)
• Package configuration: Radial (identical specification)
• Operating temperature range: -40°C ~ 85°C (identical specification)
• RoHS compliance: ROHS3 Compliant (identical specification)

Secondary Compatibility Parameters:

• Current rating: Must equal or exceed 340 mA
• DC resistance: Must not exceed 1.53 Ohm maximum
• Physical dimensions: Must accommodate board layout constraints

The RCR110DNP-681L qualifies as a direct substitute based on matching all primary criteria while providing enhanced current handling capability (420 mA versus 340 mA) and reduced DC resistance (1.2 Ohm versus 1.53 Ohm maximum).

Parameter Comparison

Engineering Selection Recommendations

The RCR110DNP-681L is the qualified substitute for the obsolete RCR108DNP-681L based on the following engineering criteria:

Compliance and Status: The RCR110DNP-681L maintains active product status with Sumida America Components Inc., ensuring continued availability and manufacturing support. Both components carry ROHS3 compliance certification and identical moisture sensitivity ratings (MSL 1 - Unlimited), confirming regulatory equivalence.

Electrical Performance: The substitute part delivers superior electrical characteristics within the same functional envelope. The 420 mA current rating exceeds the original 340 mA specification, while the 1.2 Ohm maximum DC resistance is lower than the original 1.53 Ohm specification. These improvements provide enhanced performance margins without introducing incompatibility.

Physical Compatibility: Both components share identical core diameter (0.394" / 10.00mm) and radial through-hole mounting configuration. The substitute exhibits a maximum seated height of 0.413" (10.50mm) compared to 0.335" (8.50mm) for the original part. Board layout verification is required to confirm vertical clearance accommodation.

Functional Equivalence: Matching inductance (680 µH), tolerance (±15%), core material (Ferrite), shielding (Shielded), and operating temperature range (-40°C ~ 85°C) establish direct functional equivalence for circuit applications.

Frequently Asked Questions (FAQ)

Q: Can the RCR110DNP-681L directly replace the RCR108DNP-681L in existing designs?

A: The RCR110DNP-681L qualifies as a direct electrical substitute. Verification of board layout clearance is required due to the increased seated height (0.413" versus 0.335"). The substitute's superior current rating and lower DC resistance provide performance benefits without introducing functional incompatibility.

Q: What are the key differences between these two inductors?

A: The primary differences are product status (Active versus Obsolete), current rating (420 mA versus 340 mA), DC resistance (1.2 Ohm versus 1.53 Ohm maximum), and seated height (0.413" versus 0.335"). All other electrical and mechanical specifications remain identical.

Q: Are there any compliance or certification differences?

A: Both components carry identical RoHS3 compliance certification and MSL 1 (Unlimited) moisture sensitivity ratings. No compliance differences exist between the two parts.

Q: What is the significance of the increased current rating in the substitute?

A: The RCR110DNP-681L's 420 mA current rating exceeds the original 340 mA specification, providing additional thermal margin and design flexibility. This enhancement does not introduce incompatibility; it expands the operational envelope.

Q: Does the lower DC resistance of the substitute affect circuit performance?

A: The reduced DC resistance (1.2 Ohm versus 1.53 Ohm maximum) in the RCR110DNP-681L results in lower power dissipation and improved efficiency. This change is beneficial and does not introduce functional incompatibility.

Q: What packaging format is the substitute supplied in?

A: The RCR110DNP-681L is supplied in Tape & Reel (TR) packaging, whereas the original RCR108DNP-681L packaging format is not specified in the available data. Confirm packaging requirements for your procurement process.

Q: Is board layout modification necessary for the substitution?

A: The increased seated height of the RCR110DNP-681L (0.413" versus 0.335") requires verification of vertical clearance on the target PCB. Horizontal footprint remains identical due to matching core diameter and radial configuration.