74F105AP-RC Equivalent & Substitute Parts

Part Overview

The 74F105AP-RC is a 10 µH unshielded wirewound inductor manufactured by Bourns Inc., rated for 250 mA with a maximum DC resistance of 3Ohm. This through-hole axial component operates across -55°C to 125°C and features a phenolic core. The product is currently obsolete, making equivalent substitutes necessary for ongoing applications and new designs requiring similar electrical characteristics.

Substiute Parts

74F105AP-RC

Bourns Inc.In Stock: 204874F105AP-RC Datasheet

Current PartRFQ

B82144A2103K000

EPCOS - TDK ElectronicsIn Stock: 9658B82144A2103K000 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 74F105AP-RC is determined by the following critical parameters:

• Inductance Value: Must be 10 µH with ±10% tolerance
• Current Rating: Minimum 250 mA required for equivalent operation
• DC Resistance: Maximum 3Ohm to maintain electrical performance
• Mounting Configuration: Through-hole axial package required
• Operating Temperature: -55°C to 125°C range compliance
• Shielding: Unshielded configuration
• Compliance: ROHS3 compliance required

The B82144A2103K000 meets these substitution criteria with matching inductance, tolerance, temperature range, mounting type, and compliance status. While the substitute features a higher current rating (1.4 A) and lower DC resistance (220mOhm), these represent improved electrical characteristics suitable for the 250 mA application.

Parameter Comparison

Engineering Selection Recommendations

The B82144A2103K000 is a direct functional substitute for the obsolete 74F105AP-RC. Both components maintain identical inductance values, tolerance specifications, and operating temperature ranges. The substitute is currently in active production status with 9592 units available in inventory, ensuring supply continuity.

Both parts are ROHS3 compliant. The substitute's improved electrical characteristics—higher current rating and significantly lower DC resistance—provide enhanced performance margins for the 250 mA application without compromising compatibility. The axial through-hole package configuration remains identical, supporting direct board-level replacement.

Frequently Asked Questions (FAQ)

Q: Can the B82144A2103K000 directly replace the 74F105AP-RC in existing designs?

A: Yes. Both components share identical inductance (10 µH), tolerance (±10%), operating temperature range (-55°C to 125°C), and axial through-hole package configuration. The substitute's higher current rating (1.4 A vs. 250 mA) and lower DC resistance (220mOhm vs. 3Ohm) represent improved electrical performance suitable for the application.

Q: What are the key differences between these inductors?

A: The primary differences are core material (phenolic vs. ferrite drum core), current rating, and DC resistance. The substitute features lower resistance and higher current capacity, both advantageous for the 250 mA operating point. Inductance frequency test points differ (7.96 MHz vs. 1 MHz), reflecting different measurement methodologies.

Q: Are both parts RoHS compliant?

A: Yes. Both the 74F105AP-RC and B82144A2103K000 are ROHS3 compliant. The substitute is REACH Affected, while the original is REACH Unaffected.

Q: What is the physical size difference?

A: The 74F105AP-RC measures 0.200" diameter × 0.500" length (5.08mm × 12.70mm). The B82144A2103K000 measures 0.205" diameter × 0.472" length (5.20mm × 12.00mm). Both fit standard through-hole axial component footprints with minimal dimensional variation.

Q: Is the substitute available in production quantities?

A: Yes. The B82144A2103K000 is in active production status with 9592 units currently in stock, providing reliable supply for new designs and production requirements.