307 nH Unshielded Wirewound Inductor 5526R-8 Equivalent & Substitute Parts

Part Overview

The 5526R-8 is a 307 nH unshielded wirewound inductor rated for 3 A continuous current, manufactured by API Delevan Inc. This component is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing design support and procurement continuity. The part operates across the temperature range of -55°C to 125°C and meets ROHS3 compliance requirements.

Substiute Parts

5526R-8

API Delevan Inc.In Stock: 12325526R-8 Datasheet

Current PartRFQ

AIAC-4125C-R307J-T

Abracon LLCIn Stock: 1859AIAC-4125C-R307J-T Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 5526R-8 is determined by the following critical parameters:

• Inductance Value: 307 nH with ±5% tolerance
• Current Rating: 3 A minimum
• Core Type: Air core construction
• Shielding Configuration: Unshielded
• Mounting Technology: Surface mount package
• Temperature Operating Range: Minimum -40°C to 125°C (note: original part extends to -55°C)
• Regulatory Compliance: ROHS3 and REACH compliance

The AIAC-4125C-R307J-T from Abracon LLC meets all critical substitution criteria. Both parts share identical inductance specifications, current ratings, core materials, and shielding characteristics. The substitute maintains surface mount compatibility and regulatory compliance.

Parameter Comparison

Engineering Selection Recommendations

The AIAC-4125C-R307J-T qualifies as a direct substitute for the obsolete 5526R-8 based on matching inductance, current rating, core type, and shielding specifications. Both components maintain ROHS3 and REACH compliance.

Design considerations for substitution:

• Temperature Range Limitation: The substitute operates to -40°C minimum versus -55°C for the original part. Applications requiring operation below -40°C require alternative sourcing.
• Self Resonant Frequency: The substitute exhibits a lower self resonant frequency (500 MHz versus 660 MHz). Circuit designs dependent on the original part's higher frequency response require evaluation.
• DC Resistance: The substitute specifies maximum DC resistance of 22 mOhm, providing defined electrical characteristics absent from the original part specification.
• Packaging: The substitute is supplied in Tape & Reel format, supporting automated assembly processes.

Frequently Asked Questions (FAQ)

Q: Can the AIAC-4125C-R307J-T replace the 5526R-8 in all applications?

A: The substitute meets all primary electrical specifications (inductance, current rating, core type, shielding). Applications operating below -40°C or requiring the original part's 660 MHz self resonant frequency require alternative evaluation.

Q: What is the primary reason for substitution?

A: The 5526R-8 is classified as obsolete. The AIAC-4125C-R307J-T provides equivalent functionality with active product status and established supply availability.

Q: Are there package dimension differences?

A: Yes. The original part measures 0.420" L × 0.235" W × 0.250" H (10.67mm × 5.97mm × 6.35mm). The substitute measures 0.354" L × 0.173" W × 0.197" H (9.00mm × 4.40mm × 5.00mm). PCB layout verification is required for physical compatibility.

Q: Do both parts meet regulatory requirements?

A: Both components are ROHS3 compliant and REACH unaffected, meeting current regulatory standards for electronic component procurement.

Q: What is the difference in Q factor between the two parts?

A: At 50 MHz, the original part specifies Q of 95, while the substitute specifies Q of 100. This represents a 5.3% improvement in quality factor for the substitute.