Murata Power Solutions 34333C Shielded Wirewound Inductor

Part Overview

The Murata Power Solutions 34333C is a 33 µH shielded wirewound inductor rated for 480 mA continuous current with a maximum DC resistance of 560 mOhm. This component is designed for surface mount applications in the 3400 series and maintains active product status with full RoHS3 compliance. Alternative components may be required due to inventory constraints, design optimization needs, or specific application requirements for enhanced current handling or reduced DC resistance characteristics.

Substiute Parts

34333C

Murata Power Solutions Inc.In Stock: 82634333C Datasheet

Current PartRFQ

SRR4018-330Y

Bourns Inc.In Stock: 1643SRR4018-330Y Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The Bourns SRR4018-330Y qualifies as a functional substitute for the Murata 34333C based on the following critical parameters:

Matching Parameters:

• Inductance: 33 µH (identical)
• Operating Temperature Range: -40°C to 125°C (identical)
• Shielding: Shielded (identical)
• Mounting Type: Surface Mount (identical)
• RoHS3 Compliance: Yes (identical)
• MSL Rating: 1 (Unlimited) (identical)

Enhanced Specifications:

• Current Rating: 730 mA (versus 480 mA) — provides 52% higher current capacity
• DC Resistance: 420 mOhm Max (versus 560 mOhm Max) — provides 25% lower resistance
• Saturation Current: 500 mA (specified, versus not specified for main part)

Tolerance Difference:

• Murata 34333C: ±20%
• Bourns SRR4018-330Y: ±30%

The substitute part maintains all critical functional parameters while offering improved electrical performance characteristics suitable for applications requiring higher current handling or lower power dissipation.

Parameter Comparison

Engineering Selection Recommendations

Both the Murata 34333C and Bourns SRR4018-330Y maintain active product status and full ROHS3 compliance with identical operating temperature ranges and MSL ratings. The Bourns SRR4018-330Y provides superior current handling capacity and reduced DC resistance, making it suitable for applications where thermal management or current margin is a design consideration. The Murata part maintains tighter inductance tolerance at ±20% compared to the Bourns ±30% specification. Physical dimensions differ slightly, with the Bourns component occupying a smaller footprint (4.80mm versus 5.20mm). Component selection should be based on specific application requirements regarding current capacity, tolerance requirements, and available board space.

Frequently Asked Questions (FAQ)

Q: Can the Bourns SRR4018-330Y directly replace the Murata 34333C in existing designs?

A: The Bourns SRR4018-330Y maintains identical inductance value, operating temperature range, shielding, and mounting type. Physical dimensions differ slightly (4.80mm x 4.80mm versus 5.20mm x 5.20mm), requiring verification of available board space. Inductance tolerance differs (±30% versus ±20%), which may impact circuit performance in tolerance-sensitive applications.

Q: What are the key differences in electrical performance?

A: The Bourns SRR4018-330Y provides 730 mA current rating versus 480 mA for the Murata part, and features 420 mOhm maximum DC resistance compared to 560 mOhm. These specifications result in lower power dissipation and higher current capacity in the substitute component.

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

A: Yes, both components operate across -40°C to 125°C with identical MSL ratings of 1 (Unlimited).

Q: What compliance certifications apply to both parts?

A: Both the Murata 34333C and Bourns SRR4018-330Y are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99 with HTSUS code 8504.50.4000.