Equivalent & Substitute Parts for 73F153AF-RC

Part Overview

The Bourns 73F153AF-RC is a 1.5 mH unshielded drum core wirewound inductor rated for 150 mA with a maximum DC resistance of 8.8 Ohm. This through-hole axial component operates across a temperature range of -55°C to 105°C and is designed for applications requiring fixed inductance in the millihenry range.

The 73F153AF-RC is classified as obsolete. Locating equivalent substitute parts is necessary to maintain design continuity and ensure component availability for production, repair, and ongoing system support.

Substiute Parts

73F153AF-RC

Bourns Inc.In Stock: 78673F153AF-RC Datasheet

Current PartRFQ

B82144A2155J000

EPCOS - TDK ElectronicsIn Stock: 3844B82144A2155J000 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 73F153AF-RC is determined by the following critical parameters:

• Inductance Value: Must be 1.5 mH with ±5% tolerance
• Current Rating: Substitute must support minimum 150 mA
• DC Resistance: Lower or equal maximum DC resistance is acceptable
• Core Type: Ferrite, unshielded drum core wirewound construction
• Mounting Configuration: Through-hole axial package
• Temperature Range: Must cover or exceed -55°C to 105°C operating window
• Compliance: ROHS3 compliance required

The EPCOS B82144A2155J000 meets these substitution criteria with equivalent inductance, higher current rating (160 mA), lower DC resistance (6 Ohm max), and extended temperature range (-55°C to 125°C).

Parameter Comparison

Engineering Selection Recommendations

The B82144A2155J000 is the qualified substitute for the obsolete 73F153AF-RC based on the following factors:

Electrical Compatibility: Both components share identical inductance (1.5 mH) and tolerance (±5%). The substitute provides superior electrical performance with 10 mA additional current capacity and 2.8 Ohm lower DC resistance, resulting in reduced power dissipation.

Thermal Performance: The B82144A2155J000 extends the upper operating temperature limit to 125°C, providing additional thermal margin beyond the original 105°C specification.

Compliance and Availability: Both components maintain ROHS3 compliance. The substitute is classified as active product status with confirmed inventory availability (3762 pcs), ensuring long-term supply continuity compared to the obsolete original part.

Physical Form Factor: Axial through-hole mounting configuration is identical, permitting direct board-level substitution without layout modification.

Frequently Asked Questions (FAQ)

Q: Can the B82144A2155J000 directly replace the 73F153AF-RC in existing designs?

A: Yes. Both components share identical inductance value (1.5 mH), tolerance (±5%), core type (ferrite unshielded drum core), and mounting configuration (through-hole axial). The substitute meets or exceeds all critical electrical parameters.

Q: What are the physical dimension differences between these inductors?

A: The 73F153AF-RC measures 0.580" diameter × 0.625" length (14.73 mm × 15.88 mm). The B82144A2155J000 measures 0.205" diameter × 0.472" length (5.20 mm × 12.00 mm). The substitute is significantly smaller, which may require PCB layout verification to confirm clearance compatibility.

Q: Does the lower DC resistance of the substitute affect circuit operation?

A: Lower DC resistance (6 Ohm vs. 8.8 Ohm max) reduces resistive losses and heat generation. This is a performance improvement that does not negatively impact circuit function. Circuits designed for the original 8.8 Ohm specification will operate within acceptable parameters with the lower resistance substitute.

Q: Are both components RoHS compliant?

A: Yes. Both the 73F153AF-RC and B82144A2155J000 are ROHS3 compliant, meeting environmental and regulatory requirements for electronic component manufacturing and use.

Q: What is the temperature operating range difference?

A: The original 73F153AF-RC operates from -55°C to 105°C. The B82144A2155J000 extends the upper limit to 125°C, providing 20°C additional thermal headroom for high-temperature applications.