B1135AS-101M=P3 Equivalent & Substitute Parts

Part Overview

The B1135AS-101M=P3 is a 100 µH shielded drum core wirewound inductor manufactured by Murata Electronics, rated for 1.1 A continuous current with a maximum DC resistance of 330mOhm. This component is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing production and maintenance applications. Substitute parts must maintain the same inductance value, core material, and mounting compatibility while accommodating variations in current rating, DC resistance, and shielding characteristics.

Substiute Parts

B1135AS-101M=P3

Murata ElectronicsIn Stock: 813B1135AS-101M=P3 Datasheet

Current PartRFQ

NR10050T101M

Taiyo YudenIn Stock: 1940NR10050T101M Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the B1135AS-101M=P3 is determined by the following critical parameters:

• Inductance Value: Must be 100 µH at 100 kHz test frequency
• Tolerance: ±20% acceptable range
• Core Material: Ferrite drum core construction required
• Mounting Type: Surface mount configuration mandatory
• Current Rating: Minimum 1.1 A; higher ratings acceptable
• DC Resistance: Maximum 330mOhm; lower values acceptable
• Package Compatibility: Nonstandard package footprint; physical dimensions must accommodate PCB layout constraints

The NR10050T101M from Taiyo Yuden qualifies as a manufacturer-recommended substitute, meeting the inductance, tolerance, core material, and mounting requirements while providing improved current saturation characteristics and lower DC resistance.

Parameter Comparison

Engineering Selection Recommendations

The NR10050T101M serves as the manufacturer-recommended substitute for the obsolete B1135AS-101M=P3. Selection of this alternative is based on the following engineering criteria:

Electrical Compatibility: Both components maintain identical inductance values and tolerance specifications at the 100 kHz test frequency. The NR10050T101M provides superior current saturation performance (1.3A vs. 790mA) and lower DC resistance (271.7mOhm vs. 330mOhm), resulting in reduced power dissipation and improved thermal performance in the application circuit.

Compliance Status: The NR10050T101M carries ROHS3 compliance certification and REACH unaffected status, meeting current regulatory requirements for electronic component procurement. The original B1135AS-101M=P3 does not specify these compliance certifications.

Physical Considerations: The NR10050T101M exhibits larger footprint dimensions (10.00mm x 9.80mm vs. 8.40mm x 8.30mm) while maintaining identical height. PCB layout verification is required to confirm accommodation of the increased lateral dimensions.

Shielding Difference: The NR10050T101M is unshielded, whereas the original component is shielded. Applications requiring electromagnetic interference suppression must evaluate the impact of this characteristic change on circuit performance.

Temperature Range: The NR10050T101M supports an extended operating temperature range (-25°C ~ 105°C) compared to the original (-40°C ~ 85°C), providing broader environmental applicability.

Frequently Asked Questions (FAQ)

Q: Can the NR10050T101M directly replace the B1135AS-101M=P3 without circuit modification?

A: Electrical substitution is valid based on matching inductance, tolerance, and core material specifications. However, the larger physical footprint (10.00mm x 9.80mm vs. 8.40mm x 8.30mm) requires PCB layout verification. The unshielded construction of the NR10050T101M may affect electromagnetic compatibility in noise-sensitive applications; circuit-level testing is necessary to confirm functional equivalence in the specific application environment.

Q: What is the significance of the lower DC resistance in the NR10050T101M?

A: The NR10050T101M exhibits 271.7mOhm maximum DC resistance compared to 330mOhm in the original component. This 18% reduction in series resistance decreases I²R power dissipation, resulting in lower operating temperature and improved efficiency. This characteristic is advantageous in current-limited applications and reduces thermal stress on the component.

Q: Why is the NR10050T101M classified as "Not For New Designs"?

A: This product status indicates that Taiyo Yuden has designated this component for legacy support only. New product development should identify alternative inductors from current product lines. However, for existing production requiring direct replacement of the obsolete B1135AS-101M=P3, the NR10050T101M remains a valid interim solution.

Q: How does the unshielded design of the NR10050T101M affect circuit performance?

A: Unshielded inductors exhibit higher radiated electromagnetic fields compared to shielded designs. In applications where the original shielded inductor was selected to minimize EMI coupling to adjacent circuitry, the unshielded substitute may require additional circuit-level filtering or spatial isolation to maintain performance specifications. Electromagnetic compatibility testing is recommended for noise-sensitive applications.

Q: Are there packaging differences between these components?

A: The B1135AS-101M=P3 is supplied in standard packaging format, while the NR10050T101M is available in Tape & Reel (TR) configuration. Both components maintain identical moisture sensitivity level (MSL 1 - Unlimited), eliminating special handling requirements. Reel packaging is standard for high-volume production environments and does not affect component performance or reliability.