74F276AP-RC Equivalent & Substitute Parts

Part Overview

The 74F276AP-RC is a 2.7 µH unshielded wirewound inductor manufactured by Bourns Inc., rated for 700 mA continuous current with a maximum DC resistance of 500mOhm. This through-hole axial component operates across the temperature range of -55°C to 125°C and is ROHS3 compliant. The product is currently obsolete, making identification of suitable substitute components essential for ongoing design support and production continuity.

Substiute Parts

74F276AP-RC

Bourns Inc.In Stock: 85574F276AP-RC Datasheet

Current PartRFQ

1945R-01K

DelevanIn Stock: 11531945R-01K Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 74F276AP-RC is determined by the following critical parameters:

• Inductance Value: Must be 2.7 µH with ±10% tolerance to maintain circuit performance
• Current Rating: Substitute must support minimum 700 mA continuous current
• DC Resistance: Lower DCR values are acceptable; higher values may impact circuit efficiency
• Operating Temperature Range: Must support -55°C to 125°C minimum
• Mounting Configuration: Through-hole axial package required for mechanical compatibility
• Shielding: Unshielded configuration maintained across substitutes
• Compliance: ROHS3 compliance required for regulatory alignment

The Delevan 1945R-01K meets these substitution criteria with superior electrical performance characteristics.

Parameter Comparison

Engineering Selection Recommendations

The 1945R-01K from Delevan is a direct functional substitute for the obsolete 74F276AP-RC. Both components maintain identical inductance values and tolerance specifications, with matching operating temperature ranges and ROHS3 compliance status. The Delevan substitute provides enhanced electrical performance through reduced DC resistance (110mOhm versus 500mOhm) and increased current rating capacity (1.6 A versus 700 mA), making it suitable for applications requiring the original component's specifications or higher performance margins. The substitute is currently in active production status with confirmed inventory availability.

Frequently Asked Questions (FAQ)

Q: Can the 1945R-01K replace the 74F276AP-RC in existing designs?

A: Yes. Both components share identical inductance values (2.7 µH), tolerance (±10%), operating temperature range (-55°C to 125°C), and axial through-hole package configuration. The substitute meets or exceeds all critical electrical parameters of the original component.

Q: What are the differences in DC resistance between these inductors?

A: The 74F276AP-RC has a maximum DC resistance of 500mOhm, while the 1945R-01K measures 110mOhm. Lower DC resistance in the substitute reduces resistive losses and heat generation in the circuit.

Q: Are there current rating considerations for substitution?

A: The original component is rated for 700 mA continuous current. The substitute is rated for 1.6 A, providing additional current capacity margin. Applications operating at or below 700 mA will function within the substitute's safe operating range.

Q: Do both components have the same physical dimensions?

A: Both use axial through-hole packages with similar form factors. The 74F276AP-RC measures 0.200" diameter × 0.500" length, while the 1945R-01K measures 0.193" diameter × 0.447" length. These dimensional differences are negligible for standard through-hole PCB mounting.

Q: Are compliance certifications equivalent?

A: Both components are ROHS3 compliant and carry identical regulatory status (REACH Unaffected, ECCN EAR99, HTSUS 8504.50.8000), ensuring equivalent compliance for production and distribution.