API Delevan 4590-335K Equivalent & Substitute Parts

Part Overview

The API Delevan 4590-335K is a 3.3 mH fixed unshielded drum core wirewound inductor rated for 510 mA continuous current with a maximum DC resistance of 2.53 Ohm. This through-hole axial package component operates across -55°C to 125°C and is currently active in production. Finding equivalent and substitute parts becomes necessary when the original part faces supply constraints, end-of-life conditions, or when design requirements mandate alternative compliance certifications such as RoHS compliance.

Substiute Parts

4590-335K

API Delevan Inc.In Stock: 8524590-335K Datasheet

Current PartRFQ

4590R-335K

API Delevan Inc.In Stock: 10064590R-335K Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 4590-335K is determined by electrical and mechanical parameter compatibility. The critical substitution parameters are: inductance value (3.3 mH), current rating (510 mA minimum), maximum DC resistance (2.53 Ohm), tolerance (±10%), core material (ferrite), inductor type (drum core wirewound), shielding configuration (unshielded), operating temperature range (-55°C to 125°C), and physical form factor (through-hole axial mounting with dimensions 0.455" Dia x 0.900" L).

The 4590R-335K qualifies as a direct substitute, matching all specified electrical characteristics and mechanical form factor requirements. The primary distinction between the two parts is regulatory compliance: the 4590-335K is RoHS non-compliant while the 4590R-335K is RoHS3 compliant. Both parts are REACH Unaffected and classified under ECCN EAR99.

Parameter Comparison

Engineering Selection Recommendations

Both the 4590-335K and 4590R-335K are active production components with identical electrical and mechanical specifications. Selection between these parts should be based on regulatory and compliance requirements applicable to the end application:

Select the 4590-335K when designs are not constrained by RoHS3 compliance mandates or when existing inventory of the non-compliant version is available and acceptable within the application's regulatory framework.

Select the 4590R-335K when the target application or manufacturing region requires RoHS3 compliance or when establishing new supply lines for long-term production builds. The RoHS3-compliant designation of the 4590R-335K makes it the preferred choice for applications subject to EU Directive 2011/65/EU or equivalent regional compliance standards.

Frequently Asked Questions (FAQ)

Q: Can the 4590R-335K replace the 4590-335K in existing designs? A: Yes. The 4590R-335K is electrically and mechanically identical to the 4590-335K. The only difference is RoHS3 compliance certification. Direct substitution is possible with no circuit redesign required.

Q: What does the "R" designation in 4590R-335K indicate? A: The "R" suffix denotes RoHS3 compliance. This indicates the inductor meets the Restriction of Hazardous Substances Directive (2011/65/EU) and does not contain prohibited substances such as lead, mercury, cadmium, or hexavalent chromium above specified thresholds.

Q: Are the physical dimensions and form factors identical between both parts? A: Yes. Both the 4590-335K and 4590R-335K feature identical axial through-hole mounting with dimensions of 0.455" Dia x 0.900" L (11.55mm x 22.86mm). They are pin-compatible replacements on printed circuit boards.

Q: What is the minimum current rating for safe operation? A: Both inductors are rated for 510 mA continuous current at 1 kHz frequency. The saturation current (Isat) is 310 mA, above which the inductance value begins to degrade.

Q: Can either part operate outside the -55°C to 125°C temperature range? A: No. Both the 4590-335K and 4590R-335K are specified for operation within -55°C to 125°C. Operation outside this range may compromise inductance stability and component reliability.

Q: Are both parts suitable for high-frequency applications? A: Both parts are unshielded drum core wirewound inductors with ferrite cores. The self-resonant frequency is not specified in the data provided. Applications requiring high-frequency operation should be verified against the complete electrical characteristics from the manufacturer.