28334C Equivalent & Substitute Parts Reference

Part Overview

The Murata Power Solutions 28334C is a 330 µH unshielded wirewound surface mount inductor rated for 950 mA with a maximum DC resistance of 575mOhm. This component is classified as obsolete, making identification of suitable substitute parts essential for ongoing design support and production continuity. The part operates across a temperature range of -40°C to 125°C and is RoHS compliant with unlimited moisture sensitivity rating.

Substiute Parts

28334C

Murata Power SolutionsIn Stock: 96228334C Datasheet

Current PartRFQ

P0250.334NLT

Pulse ElectronicsIn Stock: 4564P0250.334NLT Datasheet

MFR RecommendedRFQ

SDR1806-331KL

Bourns Inc.In Stock: 1532SDR1806-331KL Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 28334C must satisfy the following core electrical and mechanical criteria:

• Inductance value of 330 µH
• Surface mount configuration
• Unshielded wirewound construction
• Current rating equal to or exceeding 950 mA
• DC resistance within acceptable operating parameters
• Operating temperature range compatible with -40°C to 125°C
• RoHS compliance status

The two identified substitutes meet these requirements while offering active product status and improved availability compared to the obsolete 28334C.

Parameter Comparison

Engineering Selection Recommendations

Both substitute parts maintain the core electrical specifications required for 330 µH inductance applications at surface mount density. The P0250.334NLT from Pulse Electronics provides a direct functional equivalent with improved current rating (1 A versus 950 mA) and lower DC resistance (560mOhm versus 575mOhm), while maintaining standard wirewound construction. The SDR1806-331KL from Bourns offers similar electrical performance with drum core construction and ferrite material core, providing an alternative topology within the same parameter envelope.

Both substitutes carry active product status and ROHS3 compliance, ensuring long-term supply chain viability and regulatory alignment. The Pulse Electronics option maintains the standard wirewound topology identical to the original 28334C, while the Bourns option introduces drum core construction as an alternative approach to achieving the specified inductance and current handling characteristics.

Frequently Asked Questions (FAQ)

Q: Can the P0250.334NLT directly replace the 28334C in existing designs?

A: Yes. The P0250.334NLT maintains 330 µH inductance, unshielded wirewound construction, and surface mount configuration. The higher current rating (1 A) and lower DC resistance (560mOhm) represent improved electrical performance within the same functional envelope.

Q: What is the primary difference between the Pulse Electronics and Bourns substitutes?

A: The P0250.334NLT uses standard wirewound construction, while the SDR1806-331KL employs drum core wirewound construction with ferrite material. Both achieve 330 µH inductance and 1 A current rating. The drum core design may offer different frequency response characteristics.

Q: Are both substitutes available in the same packaging format?

A: The P0250.334NLT is supplied in Tape & Reel (TR) format, while the SDR1806-331KL is supplied in Cut Tape (CT) & Digi-Reel format. Both are surface mount compatible with nonstandard package dimensions.

Q: Do the substitute parts maintain the same physical dimensions as the 28334C?

A: Physical dimensions are similar but not identical. The 28334C measures 0.728" L x 0.598" W x 0.299" H. The P0250.334NLT measures 0.733" L x 0.596" W x 0.290" H, and the SDR1806-331KL measures 0.720" L x 0.551" W x 0.272" H. Verify PCB layout compatibility before implementation.

Q: What compliance certifications apply to the substitute parts?

A: Both substitutes are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements. Both carry unlimited moisture sensitivity rating (MSL 1).