70F184AI-RC Equivalent & Substitute Parts

Part Overview

The 70F184AI-RC is a 180 µH unshielded drum core wirewound inductor manufactured by Bourns Inc., rated for 135 mA maximum current with 8.16Ohm DC resistance. This component is designed for through-hole axial mounting applications requiring fixed inductance in the 180 µH range. The part is currently obsolete, making equivalent substitutes necessary for ongoing production and maintenance applications.

Substiute Parts

70F184AI-RC

Bourns Inc.In Stock: 89570F184AI-RC Datasheet

Current PartRFQ

AIAP-01-181K-T

Abracon LLCIn Stock: 1109AIAP-01-181K-T Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 70F184AI-RC is determined by the following critical parameters:

Primary Matching Criteria:

• Inductance value: 180 µH (exact match required)
• Mounting type: Through hole axial configuration
• Shielding classification: Unshielded
• Self resonant frequency: 2.8 MHz (matching performance envelope)
• RoHS3 compliance and REACH unaffected status

Secondary Compatibility Factors:

• Current rating must meet or exceed 135 mA minimum requirement
• DC resistance and tolerance must be acceptable for the application circuit
• Operating temperature range must cover the required thermal envelope
• Package dimensions must fit the PCB layout constraints

The AIAP-01-181K-T from Abracon LLC meets all primary matching criteria with identical inductance, mounting configuration, and self resonant frequency. The substitute provides superior current handling (380 mA vs. 135 mA) and lower DC resistance (1.4Ohm vs. 8.16Ohm), making it suitable for applications where the original part is no longer available.

Parameter Comparison

Engineering Selection Recommendations

The AIAP-01-181K-T is a direct functional substitute for the obsolete 70F184AI-RC. Both components maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory compatibility in production environments.

The substitute part offers improved electrical performance with lower DC resistance (1.4Ohm vs. 8.16Ohm) and higher current capacity (380 mA vs. 135 mA), reducing power dissipation in the inductor. The active product status of the AIAP-01-181K-T ensures long-term availability and supply chain continuity.

The primary design consideration is the operating temperature minimum: the substitute operates from -40°C versus the original -55°C. Applications requiring operation below -40°C require circuit-level thermal analysis to confirm acceptability.

Frequently Asked Questions (FAQ)

Q: Can the AIAP-01-181K-T directly replace the 70F184AI-RC in existing designs?

A: Yes, for applications operating above -40°C. Both components share identical inductance (180 µH), self resonant frequency (2.8 MHz), mounting configuration (through hole axial), and shielding classification (unshielded). The substitute provides superior electrical performance with lower DC resistance and higher current rating.

Q: What is the impact of the ±10% tolerance on the AIAP-01-181K-T versus the ±5% tolerance of the original?

A: The substitute has wider inductance tolerance. Applications with strict inductance specifications must account for this ±10% variation in circuit design. The original ±5% tolerance provides tighter inductance control.

Q: Are there physical dimension differences between these parts?

A: Yes. The 70F184AI-RC measures 0.170" diameter × 0.250" length (4.32mm × 6.35mm). The AIAP-01-181K-T measures 0.130" diameter × 0.360" length (3.30mm × 9.14mm). PCB layout and component spacing must accommodate the different physical envelope of the substitute.

Q: What is the significance of the lower DC resistance in the substitute part?

A: The AIAP-01-181K-T exhibits 1.4Ohm maximum DC resistance compared to 8.16Ohm in the original. This reduces resistive power loss (I²R) in the inductor, lowering heat generation and improving circuit efficiency. Applications sensitive to inductor heating benefit from this improvement.

Q: Are both parts suitable for high-frequency applications?

A: Both components share a 2.8 MHz self resonant frequency, indicating equivalent high-frequency performance characteristics. The inductance frequency test differs (790 kHz for original, 1 kHz for substitute), but this reflects measurement methodology rather than functional capability.