5526-12 Equivalent & Substitute Parts

Part Overview

The 5526-12 is a 538 nH unshielded wirewound surface mount inductor rated for 2 A continuous current, manufactured by API Delevan Inc. This component is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing design and manufacturing support. The substitute part AIAC-4125C-R538J-T from Abracon LLC provides electrical and mechanical compatibility while offering active product status and improved compliance characteristics.

Substiute Parts

5526-12

API Delevan Inc.In Stock: 8855526-12 Datasheet

Current PartRFQ

AIAC-4125C-R538J-T

Abracon LLCIn Stock: 712AIAC-4125C-R538J-T Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

The AIAC-4125C-R538J-T qualifies as a direct substitute based on the following matching critical parameters:

• Inductance Value: Both parts specify 538 nH with ±5% tolerance, ensuring equivalent circuit performance
• Current Rating: Both rated for 2 A continuous current operation
• Core Type: Both utilize air-core construction, determining inductance characteristics and frequency response
• Shielding Configuration: Both are unshielded inductors, affecting application placement requirements identically
• Mounting Technology: Both are surface mount components compatible with standard PCB assembly processes
• Inductance Measurement Frequency: Both reference 50 MHz as the test frequency standard

Substitution validity is constrained to applications where the operating temperature range and DC resistance specifications of the substitute part are compatible with circuit requirements.

Parameter Comparison

Engineering Selection Recommendations

The AIAC-4125C-R538J-T is the designated substitute for the obsolete 5526-12, offering the following advantages:

Product Status: The substitute maintains active manufacturing status, ensuring long-term supply chain availability and continued support.

Regulatory Compliance: The AIAC-4125C-R538J-T achieves ROHS3 compliance, whereas the 5526-12 is non-compliant. Selection of the substitute satisfies regulatory requirements for restricted substances in electronics manufacturing.

Electrical Equivalence: Matching inductance values, current ratings, and core materials ensure functional interchangeability in circuit designs. The substitute exhibits superior Q-factor performance at 50 MHz (100 vs. 87), indicating lower losses in high-frequency applications.

Temperature Consideration: The 5526-12 supports extended low-temperature operation to -55°C, while the substitute operates to -40°C. Applications requiring operation below -40°C require evaluation of alternative solutions.

DC Resistance: The substitute specifies a maximum DC resistance of 42 mOhm, whereas the 5526-12 specification is not provided. Circuits sensitive to resistive losses must verify compatibility with this parameter.

Frequently Asked Questions (FAQ)

Q: Can the AIAC-4125C-R538J-T directly replace the 5526-12 in existing designs?

A: Direct replacement is valid for applications operating within -40°C to 125°C. The matching inductance, current rating, and core configuration ensure electrical equivalence. Designs requiring operation below -40°C require alternative component selection or circuit modification analysis.

Q: What are the critical electrical parameters that define substitution compatibility?

A: Inductance value (538 nH ±5%), current rating (2 A), core type (air), and shielding configuration (unshielded) are the primary parameters defining substitution eligibility. These parameters determine circuit performance and component placement requirements.

Q: How do the Q-factor and self-resonant frequency differences affect circuit performance?

A: The AIAC-4125C-R538J-T exhibits higher Q at 50 MHz (100 vs. 87), indicating lower resistive losses. The lower self-resonant frequency of the substitute (400 MHz vs. 490 MHz) defines the upper frequency limit for stable performance. Circuit designs must operate below the component's self-resonant frequency to avoid impedance inversion.

Q: Are there mechanical compatibility considerations between these parts?

A: Both components are surface mount with nonstandard package dimensions. The substitute is offered in standard Tape & Reel packaging, improving manufacturing efficiency. Footprint verification is required, as the 5526-12 measures 0.420" x 0.250" while the AIAC-4125C-R538J-T measures 0.354" x 0.173", resulting in a smaller board footprint.

Q: What compliance advantages does the substitute provide?

A: The AIAC-4125C-R538J-T achieves ROHS3 compliance and maintains REACH unaffected status, matching the original part. This addresses regulatory requirements for electronics manufacturing in restricted substance jurisdictions.