B1135AS-1R0N=P3 Equivalent & Substitute Parts

Part Overview

The B1135AS-1R0N=P3 is a 1 µH shielded drum core wirewound inductor manufactured by Murata Electronics, rated for 8.5 A continuous current with a maximum DC resistance of 9.6 mOhm. This component is classified as obsolete, making identification of suitable substitute parts essential for ongoing design support and production continuity. The part operates across the temperature range of -40°C to 85°C and is designed for surface mount applications in nonstandard packaging configurations.

Substiute Parts

B1135AS-1R0N=P3

Murata ElectronicsIn Stock: 1157B1135AS-1R0N=P3 Datasheet

Current PartRFQ

7443340100

Würth ElektronikIn Stock: 43397443340100 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the B1135AS-1R0N=P3 is determined by strict equivalence in the following electrical and mechanical parameters:

• Inductance Value: Must be 1 µH to maintain circuit functionality
• Core Type and Shielding: Must be ferrite-based shielded drum core wirewound construction to preserve electromagnetic performance
• Mounting Configuration: Must be surface mount compatible
• Current Handling Capability: The substitute must support the application's current requirements without saturation
• DC Resistance: Lower DCR values indicate improved efficiency and reduced power loss
• Operating Temperature Range: Must encompass or exceed the original -40°C to 85°C specification
• Package Compatibility: Physical dimensions and height must be compatible with the PCB layout

The Würth Elektronik 7443340100 qualifies as a substitute based on matching inductance value, core material, shielding type, and surface mount configuration. The substitute demonstrates superior electrical performance with higher current rating, lower DCR, and extended temperature range.

Parameter Comparison

Engineering Selection Recommendations

The 7443340100 from Würth Elektronik is suitable for applications currently using the B1135AS-1R0N=P3. The substitute part is active in production, ensuring long-term availability and supply chain stability. The Würth component demonstrates improved electrical performance with doubled current rating capacity, significantly reduced DC resistance, and extended operating temperature range to 125°C. Both parts maintain ferrite shielded drum core construction and surface mount configuration. The substitute carries ROHS3 compliance and REACH unaffected status, meeting modern regulatory requirements. Physical dimensions remain compatible within the nonstandard package category, with height difference of 2.5 mm (7.50 mm versus 5.00 mm seated height) requiring PCB layout verification.

Frequently Asked Questions (FAQ)

Q: Can the 7443340100 be used as a direct replacement for the B1135AS-1R0N=P3?

A: Yes, the 7443340100 qualifies as a substitute based on matching inductance value, ferrite core material, shielding type, and surface mount configuration. The substitute offers superior electrical performance with higher current capacity and lower DC resistance.

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

A: The primary differences are current rating (17 A versus 8.5 A), DC resistance (3.9 mOhm versus 9.6 mOhm), inductance tolerance (±20% versus ±30%), operating temperature range (-40°C to 125°C versus -40°C to 85°C), and seated height (7.50 mm versus 5.00 mm). The substitute part is currently in active production status.

Q: Are there physical compatibility concerns?

A: The seated height differs by 2.5 mm, with the substitute being taller. PCB layout and clearance verification is required to confirm mechanical fit within the application's physical constraints.

Q: What is the inductance test frequency for both parts?

A: Both the B1135AS-1R0N=P3 and 7443340100 are tested at 100 kHz for inductance value verification.

Q: Does the substitute meet current regulatory compliance standards?

A: The 7443340100 carries ROHS3 compliance and REACH unaffected status, meeting current regulatory requirements for electronic components in regulated markets.

Q: How do the saturation current ratings compare?

A: The B1135AS-1R0N=P3 has a saturation current of 7.8 A, while the 7443340100 is rated at 24 A, providing significantly greater headroom for transient current conditions.