300HS-331J=P2 Equivalent & Substitute Parts

Part Overview

The 300HS-331J=P2 is a 330 µH unshielded drum core wirewound inductor manufactured by Toko America Inc., designed for surface mount applications in the 1812 (4532 Metric) package. This component is rated for 50 mA maximum current with 8.1 Ohm maximum DC resistance and operates across a temperature range of -10°C to 60°C.

The 300HS-331J=P2 carries an obsolete product status. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications utilizing this inductor specification.

Substiute Parts

300HS-331J=P2

Toko America Inc.In Stock: 11144300HS-331J=P2 Datasheet

Current PartRFQ

CM453232-331JL

Bourns Inc.In Stock: 2444CM453232-331JL Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 300HS-331J=P2 are identified based on the following critical parameters that define functional equivalence:

Primary Matching Criteria:

• Inductance value: 330 µH ±5% tolerance
• Package / Case: 1812 (4532 Metric) surface mount
• Core type: Drum core, wirewound, ferrite, unshielded
• Inductance test frequency: 796 kHz

Secondary Compatibility Parameters:

• Current rating equal to or greater than 50 mA
• DC resistance within acceptable operating limits
• Operating temperature range that encompasses or exceeds -10°C to 60°C
• Moisture sensitivity level MSL 1 (Unlimited)

The CM453232-331JL from Bourns Inc. meets all primary matching criteria and provides enhanced electrical performance characteristics suitable for direct substitution in applications where the 300HS-331J=P2 is specified.

Parameter Comparison

Engineering Selection Recommendations

The CM453232-331JL from Bourns Inc. is identified as a functional substitute for the obsolete 300HS-331J=P2. Selection of this substitute is supported by the following factors:

Compliance and Availability: The CM453232-331JL carries active product status with current manufacturing support, ensuring long-term supply chain availability. The substitute achieves ROHS3 compliance, whereas the original part is RoHS non-compliant. This compliance improvement may be advantageous for applications subject to environmental regulations.

Electrical Performance: The substitute provides a higher current rating (85 mA versus 50 mA), offering increased design margin in current-limited applications. The substitute operates across an extended temperature range (-40°C to 125°C versus -10°C to 60°C), providing broader environmental compatibility.

Parameter Deviations: The CM453232-331JL exhibits higher DC resistance (14 Ohm Max versus 8.1 Ohm Max) and lower quality factor (40 @ 796 kHz versus 50 @ 796 kHz). These differences may impact circuit performance in applications sensitive to inductor losses or frequency response characteristics. Circuit-level validation is required to confirm acceptable performance with the substitute part.

The substitute maintains identical inductance value, tolerance, package dimensions, and core construction, establishing the foundation for direct substitution in mechanical and functional integration.

Frequently Asked Questions (FAQ)

Q: Can the CM453232-331JL directly replace the 300HS-331J=P2 in all applications?

A: The CM453232-331JL matches the primary electrical and mechanical specifications (inductance, package, core type). However, the substitute exhibits higher DC resistance and lower quality factor. Applications sensitive to inductor losses or operating at frequencies near the self-resonant point require circuit-level analysis to confirm acceptable performance.

Q: What is the impact of the higher DC resistance in the substitute part?

A: The CM453232-331JL has 14 Ohm maximum DC resistance compared to 8.1 Ohm maximum in the original part. This increases resistive losses in the inductor. In current-carrying applications, this results in higher power dissipation and heat generation. Circuit designers must verify that this additional loss does not degrade system performance or thermal management.

Q: Are the physical dimensions identical between the two parts?

A: Both parts use the 1812 (4532 Metric) package with identical length and width dimensions (0.177" L x 0.126" W / 4.50mm x 3.20mm). The substitute has a slightly greater seated height (0.134" / 3.40mm versus 0.126" / 3.20mm). PCB layout and clearance verification is recommended to ensure no mechanical interference.

Q: What is the significance of the different self-resonant frequencies?

A: The original part has a self-resonant frequency of 4 MHz, while the substitute is 3.5 MHz. This difference affects the frequency range over which the inductor behaves as intended. Applications operating near or above 3.5 MHz may experience different impedance characteristics with the substitute part.

Q: Does the RoHS3 compliance of the substitute part affect compatibility?

A: RoHS3 compliance of the CM453232-331JL is a regulatory advantage over the non-compliant original part. This compliance does not negatively impact electrical or mechanical compatibility. Applications subject to environmental regulations benefit from this improvement.

Q: What packaging format differences exist between the two parts?

A: The original 300HS-331J=P2 is supplied in Cut Tape (CT) packaging, while the CM453232-331JL is supplied in Tape & Reel (TR) packaging. This difference affects handling, storage, and automated assembly processes. Verify that your assembly equipment and supply chain processes accommodate the TR packaging format.