RCH110NP-331K Equivalent & Substitute Parts

Part Overview

The RCH110NP-331K is a 330 µH unshielded drum core wirewound inductor manufactured by Sumida America Components Inc. This through-hole component is rated for 930 mA continuous current with a maximum DC resistance of 520 mOhm. The part operates across the temperature range of -40°C to 100°C and is classified as Active product status. Substitute parts are identified when equivalent electrical specifications, mechanical dimensions, and compliance certifications align with the original component, enabling direct replacement in circuit applications without design modification.

Key Parameters

Parameter	Value
Inductance	330 µH
Tolerance	±10%
Current Rating	930 mA
DC Resistance (Max)	520 mOhm
Core Type	Ferrite, Unshielded, Drum Core
Mounting Type	Through Hole
Package	Radial, Vertical Cylinder, 4 Leads (Open)
Frequency - Self Resonant	2.8 MHz
Operating Temperature	-40°C to 100°C
Size / Dimension	0.394" Dia (10.00 mm)
Height - Seated (Max)	0.413" (10.50 mm)
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the RCH110NP-331K is determined by strict equivalence across the following critical parameters:

Electrical Specifications:

Inductance value: 330 µH at 1 kHz test frequency
Current rating: 930 mA minimum
DC resistance: 520 mOhm maximum
Self-resonant frequency: 2.8 MHz
Inductance tolerance: ±10%

Mechanical Specifications:

Core type: Ferrite, unshielded drum core
Package configuration: Radial, vertical cylinder, 4 leads (open)
Mounting: Through hole
Physical dimensions: 0.394" diameter (10.00 mm), 0.413" maximum seated height (10.50 mm)

Compliance & Certification:

RoHS3 compliance required
ECCN classification: EAR99
Product status: Active

Substitute parts must satisfy all electrical parameters within specified tolerances, maintain identical mechanical form factor and lead configuration, and hold equivalent regulatory compliance status.

Parameter Comparison

Parameter	RCH110NP-331K (Sumida)	RL110-331K-RC (Bourns)
Inductance	330 µH	330 µH
Tolerance	±10%	±10%
Current Rating (Amps)	930 mA	930 mA
DC Resistance (Max)	520 mOhm	520 mOhm
Core Type	Ferrite, Unshielded, Drum Core	Ferrite, Unshielded, Drum Core
Frequency - Self Resonant	2.8 MHz	2.8 MHz
Operating Temperature	-40°C to 100°C	-40°C to 105°C
Mounting Type	Through Hole	Through Hole
Package / Case	Radial, Vertical Cylinder, 4 Leads (Open)	Radial, Vertical Cylinder, 4 Leads (Open)
Size / Dimension	0.394" Dia (10.00 mm)	0.394" Dia (10.00 mm)
Height - Seated (Max)	0.413" (10.50 mm)	0.413" (10.50 mm)
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
ECCN	EAR99	EAR99
Product Status	Active	Active

Engineering Selection Recommendations

The RL110-331K-RC manufactured by Bourns Inc. is a direct equivalent substitute for the RCH110NP-331K. Both components are Active product status with identical electrical specifications, mechanical dimensions, and lead configurations. The substitute part meets all RoHS3 compliance requirements and carries the same ECCN classification (EAR99).

The operating temperature range of the Bourns substitute extends to 105°C compared to 100°C for the Sumida original, providing additional thermal margin in applications operating near upper temperature limits. Both parts are rated for 930 mA continuous current with 520 mOhm maximum DC resistance and maintain the same 330 µH inductance value at ±10% tolerance.

Physical form factor compatibility is confirmed: both components feature identical 0.394" diameter (10.00 mm) and 0.413" maximum seated height (10.50 mm) in radial, vertical cylinder configuration with 4 open leads. Through-hole mounting compatibility is maintained for direct PCB substitution.

Frequently Asked Questions (FAQ)

Q: Can the RL110-331K-RC replace the RCH110NP-331K in existing designs?

A: Yes. The RL110-331K-RC is electrically and mechanically equivalent. Both components share identical inductance (330 µH), current rating (930 mA), DC resistance (520 mOhm), physical dimensions, and through-hole lead configuration. Direct PCB substitution is supported without circuit modification.

Q: Are there differences in operating temperature ranges?

A: The Bourns RL110-331K-RC operates to 105°C maximum, while the Sumida RCH110NP-331K operates to 100°C. Both meet the specified -40°C minimum. The extended upper temperature rating of the substitute provides additional thermal headroom for applications approaching temperature limits.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the RCH110NP-331K and RL110-331K-RC are ROHS3 compliant and classified under ECCN EAR99. Regulatory compliance is equivalent for both components.

Q: What are the critical parameters for substitution?

A: Substitution is valid when the following parameters match: inductance value (330 µH), current rating (930 mA), DC resistance (520 mOhm maximum), core type (ferrite, unshielded drum core), package configuration (radial, vertical cylinder, 4 leads open), physical dimensions (0.394" diameter, 0.413" maximum height), and mounting type (through hole). All specified parameters are equivalent between the original and substitute part.

Q: Are there any lead configuration differences?

A: No. Both components use identical radial, vertical cylinder configuration with 4 open leads for through-hole mounting. Lead spacing and PCB footprint compatibility are maintained.

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