API Delevan 4590-824K Fixed Inductor Equivalent & Substitute Parts

Part Overview

The API Delevan 4590-824K is a fixed inductance component classified as a drum core, wirewound inductor designed for through-hole mounting applications. This 820 µH unshielded inductor operates within a temperature range of -55°C to 125°C and is rated for 1.015 A continuous current. The part maintains an active product status with 850 pieces currently in stock.

Substitute parts become necessary when original inventory is depleted, when design revisions require updated compliance certifications, or when procurement from alternative manufacturing batches is required while maintaining identical electrical and mechanical specifications.

Substiute Parts

4590-824K

API Delevan Inc.In Stock: 9534590-824K Datasheet

Current PartRFQ

4590R-824K

API Delevan Inc.In Stock: 15584590R-824K Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 4590-824K is determined by strict equivalence across the following critical parameters:

Electrical Parameters (Must Match Exactly):

• Inductance value: 820 µH
• Inductance tolerance: ±10%
• Current rating: 1.015 A
• Saturation current: 610 mA
• DC resistance: 643 mOhm maximum
• Core material: Ferrite

Mechanical Parameters (Must Match Exactly):

• Shielding configuration: Unshielded
• Mounting type: Through hole
• Package type: Axial
• Physical dimensions: 0.455" Dia × 0.900" L

Environmental Parameters (Must Match Exactly):

• Operating temperature range: -55°C to 125°C
• Inductance test frequency: 1 kHz

Only parts meeting all specified parameters across electrical, mechanical, and environmental categories qualify as direct substitutes. The 4590R-824K series variant satisfies all equivalence criteria.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection Criteria:

The 4590R-824K serves as the direct electrical and mechanical equivalent to the 4590-824K. Both parts are manufactured by API Delevan Inc. and maintain identical specifications across inductance, current rating, DC resistance, core material, shielding configuration, mounting type, package dimensions, and operating temperature range.

Compliance Differentiation:

The 4590R-824K variant achieves ROHS3 compliance, whereas the 4590-824K is classified as RoHS non-compliant. This distinction becomes relevant for applications subject to RoHS regulatory requirements or for procurement into regions with mandatory RoHS enforcement. Both parts maintain identical REACH Unaffected status and EAR99 export classification.

Inventory Availability:

The 4590R-824K maintains higher current inventory (1454 pieces) compared to the 4590-824K (850 pieces), providing improved procurement reliability for high-volume applications or extended lead-time scenarios.

Selection Logic:

• Select 4590R-824K when RoHS3 compliance is required or preferred
• Select 4590R-824K when higher inventory availability is advantageous
• Select 4590-824K only when legacy non-compliant specifications are explicitly required by design documentation

Both parts are active products with no discontinuation risk indicated.

Frequently Asked Questions (FAQ)

Q: Are the 4590-824K and 4590R-824K electrically interchangeable?

A: Yes. Both parts maintain identical inductance (820 µH ±10%), current rating (1.015 A), saturation current (610 mA), and DC resistance (643 mOhm maximum). Electrical performance is equivalent across the specified operating frequency of 1 kHz and temperature range of -55°C to 125°C.

Q: What is the difference between these two part numbers?

A: The primary difference is RoHS compliance status. The 4590R-824K is ROHS3 compliant, while the 4590-824K is RoHS non-compliant. All other electrical, mechanical, and environmental specifications are identical. The 4590R-824K also maintains higher inventory availability.

Q: Can I substitute the 4590-824K with the 4590R-824K in existing designs?

A: Yes, provided that the design does not explicitly require non-compliant components. The 4590R-824K is mechanically and electrically equivalent, with identical through-hole axial package dimensions (0.455" Dia × 0.900" L) and mounting compatibility.

Q: Are there any physical dimension differences between these parts?

A: No. Both parts share identical physical dimensions of 0.455" diameter by 0.900" length (11.55 mm × 22.86 mm). PCB footprint and mounting hole spacing are identical.

Q: Which part should I specify for new designs?

A: Specify the 4590R-824K for new designs unless legacy non-compliant specifications are explicitly required. The 4590R-824K provides ROHS3 compliance and maintains superior inventory availability.

Q: Are both parts still in active production?

A: Yes. Both the 4590-824K and 4590R-824K maintain active product status with API Delevan Inc.

Q: What is the saturation current specification, and why is it important?

A: The saturation current (Isat) is specified at 610 mA for both parts. This represents the current level at which the inductor core begins to saturate, causing inductance degradation. The continuous current rating of 1.015 A exceeds this saturation point, indicating the inductor operates in a region where inductance remains stable under rated conditions.

Q: Can these inductors be used in high-temperature applications?

A: Yes. Both parts are rated for continuous operation across the temperature range of -55°C to 125°C. No derating is specified within this range based on the provided parameters.