74F126AP-RC Equivalent & Substitute Parts

Part Overview

The 74F126AP-RC is a 1.2 µH unshielded wirewound inductor manufactured by Bourns Inc., rated for 950 mA with a maximum DC resistance of 220mOhm. This component is classified as obsolete, making equivalent substitute parts necessary for ongoing design support and procurement continuity. The part is designed for through-hole axial mounting applications requiring fixed inductance in the microhenry range.

Substiute Parts

74F126AP-RC

Bourns Inc.In Stock: 109574F126AP-RC Datasheet

Current PartRFQ

1944R-14M

API Delevan Inc.In Stock: 7731944R-14M Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 74F126AP-RC is determined by the following critical parameters:

• Inductance Value: Must be 1.2 µH with ±20% tolerance
• Current Rating: Minimum 950 mA required; higher ratings are acceptable
• DC Resistance: Maximum 220mOhm; lower values are acceptable
• Shielding Configuration: Unshielded only
• Mounting Type: Through hole axial package required
• Operating Temperature Range: Must support -55°C ~ 125°C
• Compliance: RoHS3 compliant

The 1944R-14M from API Delevan Inc. meets all substitution criteria with equivalent inductance, tolerance, temperature range, and compliance status. The substitute part offers improved current handling (1 A vs. 950 mA) and maintains unshielded construction with through-hole axial mounting.

Parameter Comparison

Engineering Selection Recommendations

The 1944R-14M is a direct functional equivalent for the 74F126AP-RC. Both components maintain identical inductance values, tolerance specifications, and operating temperature ranges. The substitute part is currently in active production status, ensuring long-term availability and supply chain stability compared to the obsolete 74F126AP-RC.

The 1944R-14M provides enhanced current capacity (1 A versus 950 mA), making it suitable for applications requiring the original 950 mA specification with additional design margin. The slightly higher DC resistance (280mOhm versus 220mOhm) remains within acceptable limits for most circuit applications and does not compromise the functional performance of the inductance value.

Both parts maintain RoHS3 compliance and REACH unaffected status, supporting regulatory requirements for modern electronics manufacturing.

Frequently Asked Questions (FAQ)

Q: Can the 1944R-14M directly replace the 74F126AP-RC in existing designs?

A: Yes. Both components share identical inductance values (1.2 µH), tolerance (±20%), operating temperature range (-55°C ~ 125°C), and unshielded axial through-hole mounting configuration. The substitute part meets all electrical and mechanical requirements for direct substitution.

Q: What is the impact of the higher current rating on the 1944R-14M?

A: The increased current rating (1 A versus 950 mA) provides additional design margin without affecting circuit performance. Applications designed for 950 mA operation will function identically with the higher-rated substitute component.

Q: Does the increased DC resistance of the 1944R-14M affect circuit performance?

A: The DC resistance difference (280mOhm versus 220mOhm) represents a 60mOhm increase. For most applications, this difference is negligible. Circuit designers should verify power dissipation and thermal performance if the application operates at maximum current ratings.

Q: Are there packaging differences between these components?

A: The 74F126AP-RC is supplied in standard through-hole packaging, while the 1944R-14M is available in Tape & Reel (TR) format. Both maintain identical axial package geometry suitable for through-hole PCB assembly.

Q: Why is the 74F126AP-RC classified as obsolete?

A: Obsolescence reflects the manufacturer's discontinuation of the product line. The 1944R-14M, maintained in active production status, provides equivalent functionality with assured long-term availability.