5526R-2 Equivalent & Substitute Parts Reference

Part Overview

The 5526R-2 is a 111 nH unshielded wirewound surface mount inductor manufactured by API Delevan Inc., rated for 3.5 A continuous current operation. This component is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing design support and procurement continuity. Substitute parts must maintain electrical performance across the specified operating temperature range and frequency characteristics while meeting current RoHS3 and REACH compliance requirements.

Substiute Parts

5526R-2

API Delevan Inc.In Stock: 7935526R-2 Datasheet

Current PartRFQ

AIAC-4125C-R111J-T

Abracon LLCIn Stock: 1456AIAC-4125C-R111J-T Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 5526R-2 is determined by the following critical parameters:

Primary Matching Criteria:

• Inductance value: 111 nH ±5%
• Current rating: 3.5 A minimum
• Core type: Air core
• Shielding configuration: Unshielded
• Mounting technology: Surface mount
• Frequency test point: 50 MHz performance

Compliance Requirements:

• RoHS3 Compliant status
• REACH Unaffected classification
• Operating temperature compatibility within specified range

The AIAC-4125C-R111J-T from Abracon LLC meets all primary electrical and mechanical matching criteria. This part maintains identical inductance, tolerance, current rating, core material, and shielding characteristics. Both components are RoHS3 compliant and REACH unaffected, ensuring regulatory equivalence.

Parameter Comparison

Engineering Selection Recommendations

The AIAC-4125C-R111J-T from Abracon LLC is a direct functional equivalent for the obsolete 5526R-2. Selection of this substitute is supported by the following engineering factors:

Electrical Equivalence: Both components deliver identical inductance (111 nH ±5%), current rating (3.5 A), and core configuration (air core, unshielded). Frequency response characteristics are within acceptable variance, with the substitute demonstrating superior Q factor (100 vs. 87 @ 50 MHz) and specified DC resistance (9.5 mOhm maximum).

Compliance Alignment: Both parts maintain RoHS3 compliance and REACH unaffected status, ensuring regulatory continuity in production environments subject to these requirements.

Availability and Manufacturing Status: The substitute part is actively manufactured by Abracon LLC with confirmed inventory availability (1400 pieces), whereas the original 5526R-2 is obsolete. This transition eliminates long-term supply chain risk.

Temperature Operating Range Consideration: The substitute operates across -40°C to 125°C, compared to the original -55°C to 125°C. Applications requiring operation below -40°C require explicit evaluation against circuit requirements.

Physical Dimensions: The substitute features a smaller footprint (9.00mm × 4.40mm × 5.00mm maximum height) compared to the original (10.67mm × 5.97mm × 6.35mm maximum height), enabling potential PCB layout optimization.

Frequently Asked Questions (FAQ)

Q: Can the AIAC-4125C-R111J-T directly replace the 5526R-2 in existing designs?

A: Yes, for applications operating within the -40°C to 125°C temperature range. The substitute maintains identical inductance, tolerance, current rating, and core characteristics. Applications requiring operation below -40°C require circuit-level thermal analysis to confirm performance.

Q: What is the significance of the higher Q factor in the substitute part?

A: The AIAC-4125C-R111J-T exhibits Q of 100 @ 50 MHz versus 87 @ 50 MHz for the original. Higher Q indicates lower energy dissipation at the test frequency, resulting in improved efficiency. This represents a performance enhancement rather than a limitation.

Q: How do the physical dimensions affect PCB layout?

A: The substitute is physically smaller (9.00mm × 4.40mm footprint vs. 10.67mm × 5.97mm). Existing PCB layouts designed for the 5526R-2 will accommodate the smaller substitute without modification. New designs may benefit from reduced board space requirements.

Q: What is the importance of the specified DC resistance in the substitute?

A: The AIAC-4125C-R111J-T specifies maximum DC resistance of 9.5 mOhm. This parameter defines resistive losses in the inductor winding. The original 5526R-2 does not specify this value. For applications where DCR is critical, the substitute's specified maximum ensures predictable performance.

Q: Are there packaging differences between the two parts?

A: The substitute is supplied in Tape & Reel (TR) packaging, a standard format for automated assembly. The original part packaging is not specified. TR packaging is compatible with standard pick-and-place equipment used in modern manufacturing.

Q: Do both parts meet the same regulatory requirements?

A: Yes. Both the 5526R-2 and AIAC-4125C-R111J-T are RoHS3 compliant and REACH unaffected, ensuring equivalent regulatory status for applications subject to these requirements.

Q: What is the self-resonant frequency difference, and does it matter?

A: The original part specifies 1.02 GHz self-resonant frequency; the substitute specifies 1 GHz. This 2% variance is within typical manufacturing tolerance for wirewound inductors and does not affect substitution eligibility for standard RF and power applications operating below these frequencies.