B1135AS-220M=P3 Equivalent & Substitute Parts

Part Overview

The B1135AS-220M=P3 is a 22 µH shielded drum core wirewound inductor manufactured by Murata Electronics, rated for 2.3 A continuous current with a maximum DC resistance of 84 mOhm. This component is designed for surface mount applications in compact form factors. The part is currently obsolete, making identification of suitable substitute components essential for ongoing production, maintenance, and design continuity.

Substiute Parts

B1135AS-220M=P3

Murata ElectronicsIn Stock: 945B1135AS-220M=P3 Datasheet

Current PartRFQ

7447714220

Würth ElektronikIn Stock: 18587447714220 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the B1135AS-220M=P3 is determined by the following critical parameters:

• Inductance Value: Must be 22 µH at 100 kHz test frequency
• Core Type & Shielding: Ferrite core with shielding required for EMI performance
• Current Rating: Minimum 2.3 A continuous current capability
• DC Resistance: Lower DCR values are acceptable; higher values may increase power dissipation
• Saturation Current (Isat): Must exceed the application's peak current requirements
• Mounting & Package: Surface mount configuration with compatible footprint dimensions
• Temperature Range: Operating range must encompass -40°C to 85°C minimum

The Würth Elektronik 7447714220 qualifies as a direct substitute based on matching inductance, core material, shielding, and surface mount configuration, while offering improved electrical performance characteristics.

Parameter Comparison

Engineering Selection Recommendations

The 7447714220 from Würth Elektronik is a qualified substitute for the obsolete B1135AS-220M=P3. Selection is based on the following engineering criteria:

• Electrical Compatibility: Both components maintain 22 µH inductance at 100 kHz with ±20% tolerance. The substitute provides superior current handling (3 A vs. 2.3 A) and lower DC resistance (50 mOhm vs. 84 mOhm), reducing thermal losses.

• Product Status & Availability: The original Murata part is obsolete. The Würth Elektronik substitute is active production with confirmed inventory availability (1842 pcs in stock).

• Compliance & Certifications: The substitute carries AEC-Q200 qualification and ROHS3 compliance, meeting automotive and industrial reliability standards. The original part status does not specify equivalent certifications.

• Temperature Range: The substitute extends the operating temperature range to -40°C ~ 125°C, providing additional thermal margin beyond the original -40°C ~ 85°C specification.

• Physical Compatibility: Both components are surface mount with ferrite drum core construction and shielding. Dimensional differences (10.00mm x 10.00mm vs. 8.40mm x 8.30mm) require PCB layout verification, though both maintain 5.00mm maximum seated height.

Frequently Asked Questions (FAQ)

Q: Can the 7447714220 be used as a direct replacement for the B1135AS-220M=P3?

A: Yes, the 7447714220 qualifies as a substitute based on matching inductance value (22 µH), core material (ferrite), shielding, and surface mount configuration. The substitute offers improved electrical performance with higher current rating and lower DC resistance. PCB layout must accommodate the larger footprint dimensions (10.00mm x 10.00mm vs. 8.40mm x 8.30mm).

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

A: The primary differences are current rating (3 A vs. 2.3 A), DC resistance (50 mOhm vs. 84 mOhm), saturation current (3.6 A vs. 1.7 A), operating temperature range (-40°C ~ 125°C vs. -40°C ~ 85°C), and product status (active vs. obsolete). The substitute provides superior electrical performance and extended thermal operating range.

Q: Are there any package or mounting compatibility concerns?

A: Both components use surface mount technology with identical seated height (5.00mm maximum). The substitute has a larger footprint (10.00mm x 10.00mm vs. 8.40mm x 8.30mm). PCB layout verification is required to confirm adequate spacing and trace routing compatibility.

Q: What certifications does the substitute carry?

A: The 7447714220 is AEC-Q200 qualified, ROHS3 compliant, and REACH unaffected. These certifications support automotive and industrial applications with established reliability standards.

Q: Is the lower DC resistance of the substitute beneficial?

A: Yes. Lower DC resistance (50 mOhm vs. 84 mOhm) reduces resistive power dissipation (I²R losses), resulting in lower operating temperature and improved efficiency. This is a performance advantage for the substitute component.

Q: What is the moisture sensitivity level for both parts?

A: Both components carry MSL 1 (Unlimited) rating, indicating no moisture sensitivity restrictions for storage or handling.