Murata 84223C Fixed Inductor - Equivalent & Substitute Parts

Part Overview

The Murata 84223C is a 22 µH unshielded wirewound inductor rated for 600 mA continuous current with a maximum DC resistance of 600mOhm. This surface mount component operates across the industrial temperature range of -40°C to 125°C and is classified as Active product status with full RoHS3 compliance. Substitute parts are identified when equivalent inductance values, compatible current ratings, and matching package form factors are required for design flexibility, supply chain alternatives, or performance optimization within specified electrical parameters.

Substiute Parts

84223C

Murata Power Solutions Inc.In Stock: 260984223C Datasheet

Current PartRFQ

SDR0403-220ML

Bourns Inc.In Stock: 10418SDR0403-220ML Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Murata 84223C is determined by the following critical parameters:

Primary Matching Criteria:

• Inductance value: 22 µH (exact match required)
• Current rating: Minimum 600 mA (equal or greater acceptable)
• DC resistance: Maximum 600mOhm (lower values acceptable)
• Mounting type: Surface Mount
• Operating temperature range: -40°C ~ 125°C (minimum requirement)
• Shielding configuration: Unshielded
• Compliance: RoHS3 and REACH status alignment

Secondary Compatibility Factors:

• Package form factor and footprint compatibility
• Wirewound construction type
• Nonstandard package classification

The Bourns SDR0403-220ML qualifies as a direct substitute based on matching inductance (22 µH), exceeding current rating capability (760 mA vs. 600 mA), superior DC resistance performance (380mOhm vs. 600mOhm), identical operating temperature range, unshielded configuration, and equivalent compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

Both the Murata 84223C and Bourns SDR0403-220ML maintain Active product status with full RoHS3 and REACH compliance, ensuring regulatory alignment for current and future applications. The Bourns substitute provides enhanced electrical performance through higher current saturation capability (1.2A) and reduced DC resistance (380mOhm), resulting in lower power dissipation and improved thermal characteristics. Package dimensions show minor height variation (2.90mm vs. 4.60mm), requiring PCB layout verification for clearance compatibility. Selection between these components should be based on available inventory, cost considerations, and specific thermal or current margin requirements within the application circuit.

Frequently Asked Questions (FAQ)

Q: Can the Bourns SDR0403-220ML directly replace the Murata 84223C in existing designs?

A: Direct replacement is feasible for applications where the 0.60mm height difference and ferrite drum core construction do not conflict with PCB layout constraints or electromagnetic interference requirements. Electrical parameters are compatible within specified tolerances.

Q: What is the significance of the DC resistance difference between these parts?

A: The Bourns substitute exhibits 37% lower DC resistance (380mOhm vs. 600mOhm), resulting in reduced I²R losses and lower operating temperature under identical current conditions. This represents an improvement for power-sensitive applications.

Q: Are there tolerance implications when substituting the ±10% part with a ±20% part?

A: The wider tolerance of the Bourns part (±20%) may impact circuit performance in applications requiring tight inductance specifications. Circuit simulation or empirical testing is necessary to confirm acceptable performance boundaries.

Q: How do the package dimensions affect PCB redesign requirements?

A: The Bourns part is 0.60mm taller (4.60mm vs. 2.90mm) and 0.70mm wider (4.00mm vs. 3.30mm). Existing footprints require verification for vertical and horizontal clearance before implementation.

Q: Do both parts support the same mounting and handling processes?

A: Both components are surface mount, unshielded wirewound inductors with Tape & Reel packaging and MSL Level 1 (Unlimited) moisture sensitivity. Standard SMD assembly processes apply to both parts without modification.