Murata 82103C Equivalent & Substitute Parts

Part Overview

The Murata 82103C is a 10 µH unshielded wirewound inductor rated for 500 mA continuous current with a maximum DC resistance of 400mOhm. This component is designed for surface mount applications in the 1210 (3225 Metric) package format. The part is currently active in production and maintains full RoHS3 compliance. Equivalent and substitute parts are identified when design requirements permit tolerance of parameter variations within acceptable electrical and mechanical boundaries.

Substiute Parts

82103C

Murata Power Solutions Inc.In Stock: 340282103C Datasheet

Current PartRFQ

SDR0302-100ML

Bourns Inc.In Stock: 16229SDR0302-100ML Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the Murata 82103C with the Bourns SDR0302-100ML is permissible based on the following alignment of critical parameters:

Matching Parameters:

• Inductance value: Both parts rated at 10 µH
• Shielding type: Both unshielded construction
• Mounting type: Both surface mount
• RoHS3 compliance: Both parts meet regulatory requirements
• Operating temperature range: Bourns part extends to 125°C (exceeds Murata minimum of 85°C)

Allowable Variations:

• Current rating: Bourns SDR0302-100ML rated at 800 mA (exceeds Murata 500 mA requirement)
• DC resistance: Bourns part at 250mOhm Max (lower than Murata 400mOhm Max, providing improved performance)
• Tolerance: Bourns part at ±20% (wider than Murata ±10%, acceptable for applications not requiring tighter tolerance control)
• Package format: Bourns part in nonstandard package with dimensions 3.00mm x 2.80mm vs. Murata 1210 standard 3.20mm x 2.50mm (requires PCB layout verification)

Parameter Comparison

Engineering Selection Recommendations

The Bourns SDR0302-100ML qualifies as a functional substitute for the Murata 82103C based on electrical parameter compatibility and regulatory compliance. Both parts maintain ROHS3 compliance and REACH unaffected status. The Bourns part provides superior current handling capacity (800 mA vs. 500 mA) and lower DC resistance (250mOhm vs. 400mOhm), resulting in reduced power dissipation in equivalent operating conditions. The extended operating temperature range of the Bourns part (-40°C to 125°C) accommodates applications requiring higher thermal performance than the Murata specification (-40°C to 85°C). Selection between these parts depends on PCB layout constraints, as the nonstandard package dimensions and increased height of the Bourns component require footprint verification against design specifications.

Frequently Asked Questions (FAQ)

Q: Can the Bourns SDR0302-100ML directly replace the Murata 82103C on existing PCBs?

A: Direct replacement requires PCB layout verification. While both parts are surface mount inductors with 10 µH inductance, the Bourns part uses a nonstandard package with different dimensions (3.00mm x 2.80mm vs. 3.20mm x 2.50mm) and greater height (2.80mm vs. 2.30mm). Footprint compatibility must be confirmed before implementation.

Q: What are the key electrical differences between these parts?

A: The Bourns SDR0302-100ML provides higher current capacity (800 mA vs. 500 mA), lower DC resistance (250mOhm vs. 400mOhm), and wider operating temperature range (-40°C to 125°C vs. -40°C to 85°C). The Murata part maintains tighter inductance tolerance (±10% vs. ±20%).

Q: Are both parts suitable for the same applications?

A: Both parts are suitable for applications requiring 10 µH inductance at surface mount. The Bourns part is appropriate for designs with higher current demands or thermal constraints. The Murata part is preferred when tighter inductance tolerance is required and current demands do not exceed 500 mA.

Q: Do both parts meet the same regulatory requirements?

A: Yes. Both the Murata 82103C and Bourns SDR0302-100ML are ROHS3 compliant, REACH unaffected, and classified under the same HTSUS code (8504.50.4000).

Q: What is the impact of the ±20% tolerance on the Bourns part compared to the ±10% tolerance on the Murata part?

A: The wider tolerance on the Bourns part means inductance values may vary up to ±20% from the nominal 10 µH specification. Applications requiring precise inductance control should account for this variation in circuit design and performance calculations.