84683C Fixed Inductor - Equivalent & Substitute Parts

Part Overview

The Murata Power Solutions Inc. 84683C is a 68 µH unshielded wirewound surface mount inductor rated for 380 mA continuous current with a maximum DC resistance of 1.6 Ohm. This component is designed for applications requiring fixed inductance in compact form factors and is currently in active production status. Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained within the specified parameter tolerances for this product category.

Substiute Parts

84683C

Murata Power Solutions Inc.In Stock: 106684683C Datasheet

Current PartRFQ

SDR0403-680KL

Bourns Inc.In Stock: 2484SDR0403-680KL Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 84683C is determined by the following critical parameters:

• Inductance Value: Must be 68 µH with ±10% tolerance
• Current Rating: Substitute must support minimum 380 mA continuous current
• DC Resistance: Lower or equal DCR values are acceptable; higher values may impact circuit performance
• Shielding Configuration: Unshielded topology must be maintained
• Operating Temperature: Must support -40°C to 125°C range
• Mounting Type: Surface mount configuration required
• Compliance: ROHS3 compliance and REACH unaffected status required

The Bourns Inc. SDR0403-680KL meets these substitution criteria with improved electrical characteristics including higher current rating (460 mA) and lower DC resistance (1.12 Ohm Max).

Parameter Comparison

Engineering Selection Recommendations

Both the 84683C and SDR0403-680KL are active production components with ROHS3 compliance and REACH unaffected status, meeting current regulatory requirements. The SDR0403-680KL provides superior electrical performance with 80 mA additional current capacity and 0.48 Ohm lower DC resistance, making it suitable for applications requiring enhanced thermal margin or lower power dissipation. Component selection should be based on circuit design requirements, PCB layout constraints, and supplier availability. Both parts maintain identical inductance values and temperature operating ranges required for direct substitution in 68 µH fixed inductor applications.

Frequently Asked Questions (FAQ)

Q: Can the SDR0403-680KL directly replace the 84683C in existing designs?

A: Yes, provided the physical dimensions accommodate the substitute part. The SDR0403-680KL has slightly larger width (4.00mm vs 3.30mm) and height (4.60mm vs 2.90mm) dimensions. PCB layout verification is required before implementation.

Q: What is the significance of the lower DC resistance in the SDR0403-680KL?

A: Lower DC resistance (1.12 Ohm vs 1.6 Ohm) reduces resistive losses and heat generation at rated current levels, improving overall circuit efficiency and component thermal performance.

Q: Are both parts suitable for the same temperature range applications?

A: Yes, both components operate across the identical -40°C to 125°C temperature range and maintain specified inductance values throughout this range.

Q: What packaging format is used for both parts?

A: Both the 84683C and SDR0403-680KL are supplied in Tape & Reel (TR) packaging for automated assembly processes.

Q: Do both parts meet current environmental compliance standards?

A: Yes, both components are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic component manufacturing and distribution.