1025-04K Equivalent & Substitute Parts

Part Overview

The 1025-04K is a fixed unshielded molded inductor manufactured by API Delevan Inc., designed for through-hole applications. This component features a 220 nH inductance value with a maximum DC resistance of 140 mOhm and supports a current rating of 1.04 A. The part operates across a temperature range of -55°C to 125°C and is classified as Active product status. Substitute parts are identified to address supply chain requirements, compliance updates, or inventory availability while maintaining electrical and mechanical compatibility.

Substiute Parts

1025-04K

API Delevan Inc.In Stock: 8351025-04K Datasheet

Current PartRFQ

1025R-04K

API Delevan Inc.In Stock: 22941025R-04K Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 1025-04K is determined by strict equivalence across the following critical parameters:

Electrical Parameters (Must Match):

• Inductance value: 220 nH
• Inductance tolerance: ±10%
• Current rating: 1.04 A
• DC resistance: 140 mOhm maximum
• Q factor @ 25 MHz: 33
• Self resonant frequency: 510 MHz
• Operating temperature range: -55°C to 125°C

Mechanical Parameters (Must Match):

• Mounting type: Through hole
• Package type: Axial
• Physical dimensions: 0.095" Dia x 0.250" L (2.41 mm x 6.35 mm)
• Core material: Phenolic
• Shielding configuration: Unshielded

The substitute part 1025R-04K meets all electrical and mechanical requirements for direct substitution with the 1025-04K.

Parameter Comparison

Engineering Selection Recommendations

The 1025R-04K serves as a direct electrical and mechanical equivalent to the 1025-04K. Both components are manufactured by API Delevan Inc. and maintain identical specifications across all critical inductance, current, resistance, frequency, and thermal parameters.

The primary distinction between these parts is regulatory compliance status. The 1025-04K is RoHS non-compliant, while the 1025R-04K is ROHS3 compliant. Selection between these parts should be based on the regulatory requirements of the end application and target market. Applications requiring RoHS3 compliance must use the 1025R-04K. Applications without RoHS compliance requirements may use either part based on availability and supply chain considerations.

Both parts are Active status products with confirmed inventory availability. The 1025R-04K maintains higher inventory levels (2282 Pcs) compared to the 1025-04K (737 Pcs).

Frequently Asked Questions (FAQ)

Q: Can the 1025R-04K replace the 1025-04K in my circuit design?

A: Yes. The 1025R-04K is electrically and mechanically equivalent to the 1025-04K. All inductance, current rating, DC resistance, frequency response, and thermal specifications are identical. Both components use identical axial through-hole packaging with phenolic cores and unshielded configurations.

Q: What is the difference between the 1025-04K and 1025R-04K?

A: The primary difference is RoHS compliance status. The 1025-04K is RoHS non-compliant, while the 1025R-04K is ROHS3 compliant. All electrical and mechanical parameters are identical.

Q: Which part should I select for a new design?

A: Selection depends on regulatory requirements. If your application or target market requires RoHS3 compliance, use the 1025R-04K. If RoHS compliance is not required, either part is suitable based on availability.

Q: Are the physical dimensions identical between these parts?

A: Yes. Both the 1025-04K and 1025R-04K share identical axial package dimensions of 0.095" Dia x 0.250" L (2.41 mm x 6.35 mm). They are mechanically interchangeable in through-hole PCB applications.

Q: Do these inductors have the same frequency characteristics?

A: Yes. Both parts have identical Q factors of 33 at 25 MHz and self-resonant frequencies of 510 MHz. They perform identically across the specified frequency range.

Q: What is the temperature operating range for these inductors?

A: Both the 1025-04K and 1025R-04K operate across -55°C to 125°C. They are suitable for industrial and extended temperature applications.