Equivalent & Substitute Parts for 5526R-9

Part Overview

The 5526R-9 is a 380 nH unshielded wirewound inductor manufactured by API Delevan Inc., rated for 2.5 A continuous current operation. This component is classified as obsolete, necessitating identification of active equivalent parts for ongoing design support and procurement continuity. The part operates across the temperature range of -55°C to 125°C and is RoHS3 compliant with unlimited moisture sensitivity rating.

Substiute Parts

5526R-9

API Delevan Inc.In Stock: 9535526R-9 Datasheet

Current PartRFQ

AIAC-4125C-R380J-T

Abracon LLCIn Stock: 763AIAC-4125C-R380J-T Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 5526R-9 is determined by the following critical parameters:

Mandatory Matching Parameters:

• Inductance value: 380 nH
• Inductance tolerance: ±5%
• Current rating: 2.5 A minimum
• Core type: Air core
• Shielding configuration: Unshielded
• Mounting type: Surface Mount
• Wirewound construction type

Acceptable Variation Parameters:

• Operating temperature range (substitute may have narrower range)
• Q factor at 50 MHz (substitute may differ)
• Self resonant frequency (substitute may differ)
• Physical dimensions (substitute may have different footprint)
• DC resistance (if specified in substitute)
• Packaging format (Tape & Reel acceptable for Surface Mount)

The AIAC-4125C-R380J-T from Abracon LLC meets all mandatory matching criteria and qualifies as a direct substitute for the obsolete 5526R-9.

Parameter Comparison

Engineering Selection Recommendations

The AIAC-4125C-R380J-T is qualified as a direct substitute for the 5526R-9 based on the following engineering criteria:

Electrical Equivalence: Both parts maintain identical inductance values (380 nH ±5%), current ratings (2.5 A), and core construction (air core, unshielded wirewound). The Q factor differential (100 versus 95 at 50 MHz) and self resonant frequency variation (500 MHz versus 590 MHz) remain within acceptable operating margins for typical RF and high-frequency circuit applications.

Compliance Status: The AIAC-4125C-R380J-T carries active product status with full RoHS3 compliance and unlimited moisture sensitivity rating, matching the regulatory posture of the original 5526R-9.

Temperature Consideration: The substitute operates across -40°C to 125°C, which covers the upper temperature range of the original part. Applications requiring the full -55°C lower limit must evaluate thermal performance requirements independently.

Packaging: The substitute is supplied in Tape & Reel format, standard for surface mount production environments, facilitating integration into existing assembly processes.

Frequently Asked Questions (FAQ)

Q: Can the AIAC-4125C-R380J-T replace the 5526R-9 in all applications?

A: The AIAC-4125C-R380J-T qualifies as an electrical and mechanical substitute for applications operating within the -40°C to 125°C temperature range. Applications requiring operation below -40°C must be evaluated separately.

Q: What is the significance of the different self resonant frequencies (590 MHz vs. 500 MHz)?

A: Self resonant frequency defines the upper frequency limit for inductor operation. The 5526R-9 operates to 590 MHz, while the AIAC-4125C-R380J-T operates to 500 MHz. For circuits operating below 500 MHz, both parts are equivalent. Circuits requiring operation between 500 MHz and 590 MHz must use the original 5526R-9 or identify alternative substitutes.

Q: Does the DC resistance specification affect substitution?

A: The AIAC-4125C-R380J-T specifies 25.5 mOhm maximum DC resistance, while the 5526R-9 does not provide this specification. The specified DCR of the substitute is acceptable for standard inductor applications. If the original design requires specific DCR characteristics, the unspecified value of the 5526R-9 must be obtained from the manufacturer datasheet.

Q: Are there physical dimension differences between these parts?

A: Yes. The 5526R-9 measures 0.420" L × 0.235" W × 0.250" H (10.67mm × 5.97mm × 6.35mm), while the AIAC-4125C-R380J-T measures 0.354" L × 0.173" W × 0.197" H (9.00mm × 4.40mm × 5.00mm). The substitute is physically smaller. PCB layout and mechanical clearance must be verified before substitution.

Q: What packaging formats are available for the substitute?

A: The AIAC-4125C-R380J-T is supplied in Tape & Reel format, standard for automated surface mount assembly. Bulk or alternative packaging formats must be confirmed with the supplier.

Q: Are both parts RoHS3 compliant?

A: Yes. Both the 5526R-9 and AIAC-4125C-R380J-T are RoHS3 compliant with unlimited moisture sensitivity rating (MSL 1), meeting current regulatory requirements for electronic component procurement.