4554R-150K Equivalent & Substitute Parts

Part Overview

The 4554R-150K is a 15 µH unshielded through-hole inductor manufactured by API Delevan Inc., rated for 2.2 A continuous current with a maximum DC resistance of 65 mOhm. This ferrite core inductor operates across the temperature range of -40°C to 85°C and is classified as an active product with ROHS3 compliance.

Equivalent and substitute parts are identified when alternative inductors meet the core electrical specifications (inductance value, current rating, and DC resistance) while maintaining compatibility with through-hole radial mounting configurations. Substitute parts may offer improved performance characteristics such as higher current ratings or extended temperature ranges while preserving the fundamental 15 µH inductance specification.

Substiute Parts

4554R-150K

API Delevan Inc.In Stock: 9984554R-150K Datasheet

Current PartRFQ

RLB9012-150KL

Bourns Inc.In Stock: 1239RLB9012-150KL Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 4554R-150K is determined by strict adherence to the following electrical and mechanical parameters:

Primary Substitution Criteria:

• Inductance value: 15 µH (±10% tolerance)
• Current rating: minimum 2.2 A
• DC resistance: maximum 65 mOhm
• Mounting configuration: Through-hole radial, vertical cylinder
• Core material: Ferrite
• Shielding classification: Unshielded

Secondary Compatibility Factors:

• Package type must support through-hole radial mounting
• Physical dimensions must be compatible with standard PCB hole spacing
• RoHS3 compliance status

The RLB9012-150KL from Bourns Inc. qualifies as a direct substitute based on matching inductance, exceeding current rating requirements (2.9 A vs. 2.2 A), and meeting DC resistance specifications (56 mOhm vs. 65 mOhm maximum). Both parts maintain ferrite core construction, unshielded configuration, and through-hole radial mounting compatibility.

Parameter Comparison

Engineering Selection Recommendations

4554R-150K (API Delevan Inc.):

• Active product status with confirmed inventory availability (985 pcs)
• ROHS3 compliant and REACH unaffected
• Suitable for applications requiring standard operating temperature range (-40°C to 85°C)
• Established baseline specification for 15 µH, 2.2 A through-hole inductor applications

RLB9012-150KL (Bourns Inc.):

• Active product status with higher inventory availability (1153 pcs)
• ROHS3 compliant and REACH unaffected
• Provides enhanced performance margin with 2.9 A current rating (32% higher than 4554R-150K)
• Lower DC resistance (56 mOhm vs. 65 mOhm) reduces power dissipation
• Extended operating temperature range (-55°C to 125°C) supports broader application environments
• Drum core, wirewound construction type differs from standard construction but maintains electrical equivalence

Both parts meet regulatory compliance requirements and maintain identical inductance and Q-factor specifications at the test frequency of 2.52 MHz.

Frequently Asked Questions (FAQ)

Q: Can the RLB9012-150KL directly replace the 4554R-150K in existing designs?

A: Yes. Both inductors share identical 15 µH inductance values with ±10% tolerance, matching Q-factor characteristics (50 @ 2.52 MHz), and self-resonant frequency (12 MHz). The RLB9012-150KL exceeds the current rating requirement (2.9 A vs. 2.2 A) and provides lower DC resistance (56 mOhm vs. 65 mOhm maximum). Through-hole radial mounting configurations are compatible. Physical dimensions differ slightly (0.354" diameter vs. 0.340" diameter; 0.480" height vs. 0.433" height), requiring verification of PCB layout clearances.

Q: What are the key differences between these two inductors?

A: The primary differences are: (1) Current rating—RLB9012-150KL is rated 2.9 A versus 4554R-150K at 2.2 A; (2) DC resistance—RLB9012-150KL maximum 56 mOhm versus 4554R-150K maximum 65 mOhm; (3) Operating temperature range—RLB9012-150KL operates -55°C to 125°C versus 4554R-150K at -40°C to 85°C; (4) Construction type—RLB9012-150KL is drum core wirewound versus standard construction; (5) Physical dimensions—RLB9012-150KL is slightly larger; (6) Packaging—RLB9012-150KL supplied in trays versus bulk packaging for 4554R-150K.

Q: Are there any mechanical compatibility concerns when substituting these parts?

A: Yes. While both parts use through-hole radial vertical cylinder mounting, the RLB9012-150KL has larger physical dimensions (0.354" diameter and 0.480" height versus 0.340" diameter and 0.433" height for the 4554R-150K). PCB hole spacing and component clearance must be verified before substitution to ensure no interference with adjacent components or board features.

Q: Do both inductors meet the same regulatory standards?

A: Yes. Both the 4554R-150K and RLB9012-150KL are ROHS3 compliant and REACH unaffected, meeting equivalent regulatory requirements for electronic component applications.

Q: Which inductor should be selected for temperature-critical applications?

A: The RLB9012-150KL provides an extended operating temperature range (-55°C to 125°C) compared to the 4554R-150K (-40°C to 85°C). For applications requiring operation below -40°C or above 85°C, the RLB9012-150KL is the appropriate selection.