74F825AI-RC Equivalent & Substitute Parts

Part Overview

The 74F825AI-RC is a 82 µH unshielded drum core wirewound inductor manufactured by Bourns Inc., rated for 200 mA maximum current with 5.1Ohm DC resistance. This component is classified as obsolete, making equivalent substitutes necessary for ongoing production and maintenance applications. The part operates across a temperature range of -55°C to 105°C and is ROHS3 compliant.

Substiute Parts

74F825AI-RC

Bourns Inc.In Stock: 81874F825AI-RC Datasheet

Current PartRFQ

1945R-19J

API Delevan Inc.In Stock: 7261945R-19J Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

The 1945R-19J from API Delevan Inc. qualifies as a direct substitute based on the following critical parameters:

• Inductance value matches at 82 µH
• Current rating of 235 mA exceeds the 200 mA requirement
• DC resistance of 5.07Ohm is within acceptable tolerance of the 5.1Ohm specification
• Unshielded iron core construction maintains functional equivalence
• Through hole axial mounting is identical
• Operating temperature range of -55°C to 125°C encompasses the original specification
• Both components are ROHS3 compliant

Parameter Comparison

Engineering Selection Recommendations

The 1945R-19J is suitable for direct substitution in applications currently using the 74F825AI-RC. The substitute part provides superior current handling capacity at 235 mA versus 200 mA, improved inductance tolerance at ±5% versus ±10%, and an extended operating temperature ceiling to 125°C. Both components maintain ROHS3 compliance and identical mounting configurations. The molded construction of the substitute differs from the drum core wirewound design of the original, but electrical parameters remain compatible within circuit specifications. The substitute is currently in active production status, ensuring long-term availability.

Frequently Asked Questions (FAQ)

Q: Can the 1945R-19J replace the 74F825AI-RC in all applications?

A: Yes, provided the circuit design does not depend on the specific Q factor or self-resonant frequency characteristics of the original part. The 1945R-19J exhibits lower Q (75 vs 100 @ ~2.5MHz) and lower self-resonant frequency (10.4MHz vs 15MHz), which may affect performance in high-frequency filtering or tuning applications.

Q: What is the physical size difference between these parts?

A: The 74F825AI-RC measures 0.200" diameter × 0.500" length (5.08mm × 12.70mm). The 1945R-19J measures 0.193" diameter × 0.447" length (4.90mm × 11.35mm). Both are axial through-hole components with compatible PCB footprints.

Q: Are there packaging differences?

A: The 74F825AI-RC is supplied in standard packaging. The 1945R-19J is supplied in Tape & Reel (TR) format, which is standard for production environments.

Q: Does the tolerance difference affect circuit performance?

A: The 1945R-19J offers tighter tolerance (±5% vs ±10%), which provides improved inductance consistency and may enhance circuit stability in precision applications.

Q: What is the core construction difference?

A: The 74F825AI-RC uses drum core wirewound construction, while the 1945R-19J uses molded construction. Both employ iron cores and deliver equivalent electrical performance for standard filtering and energy storage applications.