RCH110BNP-331K Equivalent & Substitute Parts

Part Overview

The RCH110BNP-331K is a 330 µH unshielded drum core wirewound inductor manufactured by Sumida America Components Inc. This through-hole component is rated for 1 A continuous current with a maximum DC resistance of 460 mOhm and operates across the temperature range of -30°C to 85°C. The part is currently active in production and RoHS3 compliant.

Substitute parts are identified when equivalent inductance values, core materials, mounting types, and package configurations are maintained within acceptable electrical parameter tolerances. The primary substitute for this component is the RL110-331K-RC from Bourns Inc., which shares the same inductance specification and physical form factor while operating under different current and temperature ratings.

Substiute Parts

RCH110BNP-331K

Sumida America Components Inc.In Stock: 1130RCH110BNP-331K Datasheet

Current PartRFQ

RL110-331K-RC

Bourns Inc.In Stock: 1682RL110-331K-RC Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RCH110BNP-331K is determined by the following criteria:

Mandatory Matching Parameters:

• Inductance value: 330 µH
• Inductance tolerance: ±10%
• Core material: Ferrite
• Shielding classification: Unshielded
• Mounting type: Through Hole
• Package configuration: Radial, Vertical Cylinder, 4 Leads (Open)
• Physical dimensions: 0.394" diameter (10.00 mm), 0.413" height maximum (10.50 mm)

Allowable Variation Parameters:

• Current rating: Substitute must meet or exceed the application requirement
• DC resistance: Substitute must not exceed the maximum specified for the application
• Operating temperature range: Substitute range must encompass the application operating conditions
• Compliance certifications: RoHS3 compliance required

The RL110-331K-RC from Bourns Inc. satisfies all mandatory matching parameters and maintains electrical compatibility within the allowable variation range, despite differences in current rating and DC resistance specifications.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: RL110-331K-RC (Bourns Inc.)

The RL110-331K-RC is qualified as a direct substitute for the RCH110BNP-331K based on identical inductance specifications, core material, shielding classification, and physical form factor. Both components are RoHS3 compliant and rated for through-hole mounting in identical package configurations.

Current Rating Consideration: The RL110-331K-RC is rated for 930 mA continuous current, which is lower than the RCH110BNP-331K rating of 1 A. Selection of this substitute is appropriate only when the application circuit operates at or below 930 mA. Applications requiring the full 1 A rating must retain the original RCH110BNP-331K specification.

DC Resistance Consideration: The RL110-331K-RC exhibits a maximum DC resistance of 520 mOhm, compared to 460 mOhm for the RCH110BNP-331K. This 60 mOhm increase results in proportionally higher resistive losses. Applications with strict power dissipation or efficiency requirements must evaluate this parameter against circuit specifications.

Temperature Range: The RL110-331K-RC operates across -40°C to 105°C, which encompasses the RCH110BNP-331K operating range of -30°C to 85°C. The substitute provides extended temperature capability without thermal derating concerns within the original component's specified range.

Compliance Status: Both components maintain RoHS3 compliance and are suitable for applications subject to environmental and regulatory restrictions on hazardous substances.

Frequently Asked Questions (FAQ)

Q: Can the RL110-331K-RC replace the RCH110BNP-331K in all applications?

A: The RL110-331K-RC is electrically and mechanically compatible with the RCH110BNP-331K when circuit current requirements do not exceed 930 mA. Applications requiring the full 1 A rating must use the original component. DC resistance differences must be evaluated against circuit power dissipation specifications.

Q: What is the significance of the 60 mOhm difference in DC resistance?

A: The RL110-331K-RC exhibits 520 mOhm maximum DC resistance versus 460 mOhm for the RCH110BNP-331K. At 930 mA, this results in approximately 0.48 W versus 0.43 W of resistive power dissipation. Applications with thermal constraints or efficiency specifications must account for this difference.

Q: Are the physical dimensions identical between these components?

A: Yes. Both the RCH110BNP-331K and RL110-331K-RC share identical physical dimensions: 0.394" diameter (10.00 mm) and 0.413" maximum height (10.50 mm). Both are configured as radial, vertical cylinder packages with four open leads. PCB layout and mechanical clearance requirements are identical.

Q: What packaging formats are available for each component?

A: The RCH110BNP-331K is supplied in Tape & Reel (TR) format. The RL110-331K-RC is supplied in Bulk packaging. Component selection should account for procurement volume requirements and assembly process compatibility.

Q: Do both components meet RoHS3 compliance requirements?

A: Yes. Both the RCH110BNP-331K and RL110-331K-RC are RoHS3 compliant and suitable for applications subject to hazardous substance restrictions.

Q: What is the inductance tolerance for both components?

A: Both components are specified with ±10% inductance tolerance at 1 kHz test frequency. Circuit designs must account for this tolerance range in filter, impedance matching, and resonant frequency calculations.