B1135AS-330M=P3 Equivalent & Substitute Parts

Part Overview

The B1135AS-330M=P3 is a 33 µH shielded drum core wirewound inductor manufactured by Murata Electronics, rated for 1.9 A continuous current with a maximum DC resistance of 110 mOhm. This component is designed for surface mount applications in compact form factors. The part is currently listed as obsolete, making identification of functionally equivalent alternatives essential for ongoing production support and design continuity.

Substiute Parts

B1135AS-330M=P3

Murata ElectronicsIn Stock: 1118B1135AS-330M=P3 Datasheet

Current PartRFQ

7447715330

Würth ElektronikIn Stock: 13417447715330 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the B1135AS-330M=P3 is determined by the following critical parameters:

• Inductance Value: Must be 33 µH (±20% tolerance acceptable)
• Core Type & Shielding: Ferrite core with shielding required
• Current Rating: Minimum 1.9 A continuous current capability
• DC Resistance: Maximum 110 mOhm to maintain circuit performance
• Saturation Current: Minimum 1.4 A
• Mounting: Surface mount configuration
• Temperature Range: Minimum -40°C ~ 85°C operating window

The substitute part 7447715330 from Würth Elektronik meets all substitution criteria with improved electrical performance characteristics.

Parameter Comparison

Engineering Selection Recommendations

The 7447715330 from Würth Elektronik is a direct functional substitute for the obsolete B1135AS-330M=P3. The substitute part meets or exceeds all critical electrical parameters: inductance value, current rating, saturation current, and DC resistance specifications. The Würth component offers improved performance margins with lower DC resistance (85 mOhm vs. 110 mOhm) and higher current capacity (2.3 A vs. 1.9 A).

The substitute part carries AEC-Q200 automotive qualification and ROHS3 compliance, providing additional reliability assurance. The extended operating temperature range (-40°C ~ 125°C) provides broader environmental compatibility compared to the original part (-40°C ~ 85°C).

Physical dimensions differ between the two parts: the substitute measures 12.00mm × 12.00mm with 4.50mm height, while the original measures 8.40mm × 8.30mm with 5.00mm height. PCB layout and thermal management considerations must account for these dimensional changes.

Frequently Asked Questions (FAQ)

Q: Can the 7447715330 be used as a direct replacement for B1135AS-330M=P3?

A: Yes. Both parts share identical inductance values (33 µH), tolerance (±20%), core material (ferrite), shielding configuration, and surface mount packaging. The substitute meets all minimum electrical requirements and exceeds performance specifications.

Q: What are the key differences between these parts?

A: The primary differences are product status (substitute is active production), current rating (2.3 A vs. 1.9 A), DC resistance (85 mOhm vs. 110 mOhm), operating temperature range (-40°C ~ 125°C vs. -40°C ~ 85°C), and physical dimensions (12.00mm × 12.00mm vs. 8.40mm × 8.30mm).

Q: Will the larger package size of the substitute affect my PCB design?

A: Yes. The substitute part is larger in footprint (12.00mm × 12.00mm) and slightly shorter in height (4.50mm vs. 5.00mm). PCB layout modifications are required to accommodate the new package dimensions.

Q: Does the substitute part have any compliance certifications?

A: Yes. The 7447715330 is AEC-Q200 qualified, ROHS3 compliant, and REACH unaffected, providing automotive-grade reliability assurance.

Q: Are there any thermal or performance advantages to using the substitute?

A: The substitute offers lower DC resistance (85 mOhm vs. 110 mOhm), resulting in reduced power dissipation and improved thermal performance. Higher current rating (2.3 A vs. 1.9 A) and saturation current (2.5 A vs. 1.4 A) provide additional design margin.