DC1390R-334K Equivalent & Substitute Parts

Part Overview

The DC1390R-334K is a 330 µH fixed unshielded inductor manufactured by API Delevan Inc., designed for through-hole radial mounting applications. This ferrite-core component operates across an industrial temperature range of -55°C to 125°C and is rated for 5.67 A continuous current with a maximum DC resistance of 74 mOhm. The part maintains Active product status and is ROHS3 compliant, making it suitable for modern electronic assemblies requiring inductance filtering, energy storage, or signal conditioning in power conversion and RF circuits.

Equivalent substitute parts are identified when design requirements permit tolerance of minor variations in current rating, saturation characteristics, or operating temperature range while maintaining critical electrical parameters such as inductance value, DC resistance, and impedance characteristics.

Substiute Parts

DC1390R-334K

API Delevan Inc.In Stock: 1069DC1390R-334K Datasheet

Current PartRFQ

1140-331K-RC

Bourns Inc.In Stock: 12171140-331K-RC Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the DC1390R-334K are identified based on strict electrical and mechanical compatibility criteria. The substitution logic requires:

Mandatory Matching Parameters:

• Inductance value: 330 µH (exact match)
• Inductance tolerance: ±10% (exact match)
• Core material: Ferrite (maintains frequency response characteristics)
• Shielding configuration: Unshielded (EMI profile consistency)
• Mounting type: Through Hole (PCB assembly compatibility)
• Package configuration: Radial, Vertical Cylinder (physical footprint)
• Test frequency: 1 kHz (measurement standard consistency)

Acceptable Variation Parameters:

• Current Rating: Substitute must equal or exceed 5.67 A
• Saturation Current (Isat): Substitute must equal or exceed 7.37 A
• DC Resistance: Substitute must equal or be lower than 74 mOhm Max
• Operating Temperature Range: Substitute minimum range must encompass application requirements
• Physical dimensions: Minor variations acceptable within standard PCB hole tolerances

Regulatory Compliance:

• RoHS3 compliance required for equivalent substitution
• REACH status must be unaffected or compliant

Parameter Comparison

Engineering Selection Recommendations

DC1390R-334K (API Delevan Inc.) - Primary Selection

Use the DC1390R-334K as the primary component when:

• Operating temperature environment reaches or exceeds 105°C
• Original design specifications explicitly reference API Delevan manufacturing
• Inventory availability of 1036 pcs meets production volume requirements
• Active product status ensures long-term supply continuity

1140-331K-RC (Bourns Inc.) - Equivalent Substitute

The 1140-331K-RC qualifies as an electrical and mechanical equivalent substitute when:

• Application operating temperature remains within -55°C to 105°C range
• Current and saturation requirements are met by the 6.1 A and 11.2 A ratings respectively
• DC resistance specification of 74 mOhm Max satisfies circuit design requirements
• Physical dimensions (1.500" Dia × 1.030" Height) accommodate PCB layout constraints
• ROHS3 compliance and REACH unaffected status satisfy regulatory requirements
• Inventory availability of 1167 pcs supports production scheduling

Both components maintain identical inductance (330 µH ±10%), DC resistance (74 mOhm Max), core material (Ferrite), shielding (Unshielded), and mounting configuration (Through Hole Radial, Vertical Cylinder), establishing functional equivalence for applications within the specified thermal and electrical operating envelope.

Frequently Asked Questions (FAQ)

Q: Can the 1140-331K-RC replace the DC1390R-334K in all applications?

A: The 1140-331K-RC is electrically and mechanically equivalent for applications operating within -55°C to 105°C. Applications requiring sustained operation above 105°C must use the DC1390R-334K, which is rated to 125°C. Both parts maintain identical inductance (330 µH ±10%), DC resistance (74 mOhm Max), and core material (Ferrite).

Q: What are the critical parameters that determine substitution eligibility?

A: Substitution eligibility is determined by: inductance value (330 µH exact), inductance tolerance (±10% exact), core material (Ferrite), shielding (Unshielded), mounting type (Through Hole), and package configuration (Radial, Vertical Cylinder). Current rating and saturation current of the substitute must equal or exceed the original part specifications.

Q: Are there physical dimension differences between these parts?

A: Minor dimensional variations exist. The DC1390R-334K measures 1.480" diameter × 1.064" height, while the 1140-331K-RC measures 1.500" diameter × 1.030" height. These variations fall within standard PCB hole tolerance ranges and do not affect functional compatibility.

Q: Do both parts meet current regulatory compliance requirements?

A: Both the DC1390R-334K and 1140-331K-RC are ROHS3 compliant and REACH unaffected, satisfying current regulatory requirements for electronic component manufacturing and distribution.

Q: What is the significance of the saturation current (Isat) difference?

A: The DC1390R-334K has Isat of 7.37 A, while the 1140-331K-RC has Isat of 11.2 A. The substitute's higher saturation current provides additional margin against core saturation, which is acceptable for equivalent substitution. The original design requirement is met by both parts.

Q: How do the current ratings affect component selection?

A: The DC1390R-334K is rated for 5.67 A continuous current, and the 1140-331K-RC is rated for 6.1 A. The substitute's higher current rating exceeds the original specification, making it suitable for applications requiring the 5.67 A rating. Both parts maintain the same 74 mOhm maximum DC resistance.

Q: What should be verified before implementing a substitution?

A: Verify that the application operating temperature range falls within -55°C to 105°C for the 1140-331K-RC substitute. Confirm PCB layout accommodates the minor dimensional differences (1.500" diameter and 1.030" height). Validate that circuit design does not depend on the extended upper temperature rating of the DC1390R-334K.