Equivalent & Substitute Parts for 29L332C

Part Overview

The 29L332C is a 3.3 µH shielded wirewound inductor manufactured by Murata Power Solutions Inc., rated for 2.6 A continuous current with a maximum DC resistance of 25 mOhm. This component is classified as obsolete, making substitute parts necessary for new designs and ongoing production requirements. The part operates across a temperature range of -40°C to 85°C and is suitable for surface mount applications in compact form factors.

Substiute Parts

29L332C

Murata Power Solutions Inc.In Stock: 1841229L332C Datasheet

Current PartRFQ

BPSC000707303R3TS0

Pulse ElectronicsIn Stock: 1202BPSC000707303R3TS0 Datasheet

MFR RecommendedRFQ

SRR6028-3R3Y

Bourns Inc.In Stock: 5370SRR6028-3R3Y Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the 29L332C is determined by the following critical parameters:

• Inductance Value: 3.3 µH (exact match required)
• Current Handling: Minimum 2.5 A saturation current or equivalent continuous rating
• DC Resistance: Maximum 25 mOhm to 28 mOhm (within acceptable tolerance for power applications)
• Shielding: Shielded construction to maintain electromagnetic isolation
• Mounting: Surface mount, nonstandard package footprint
• Temperature Range: Minimum -40°C to 85°C operational capability
• Moisture Sensitivity: MSL 1 classification

Both substitute parts meet these criteria while offering active product status and improved availability compared to the obsolete 29L332C.

Parameter Comparison

Engineering Selection Recommendations

BPSC000707303R3TS0 (Pulse Electronics) is suitable for applications requiring the original operating temperature range of -40°C to 85°C with active product status and current availability of 1126 units. This part maintains the 25 mOhm maximum DC resistance specification and meets ROHS3 compliance requirements.

SRR6028-3R3Y (Bourns Inc.) provides extended operating temperature capability (-40°C to 125°C) and is actively manufactured with 5310 units in stock. The 28 mOhm maximum DC resistance remains within acceptable tolerance for most power applications. This part is specified as a drum core wirewound inductor with ferrite core material and includes ROHS3 compliance certification.

Both substitute parts carry REACH Unaffected status and EAR99 export classification, matching the regulatory profile of the original component.

Frequently Asked Questions (FAQ)

Q: Can the SRR6028-3R3Y substitute for the 29L332C despite the 3 mOhm higher DC resistance?

A: Yes. The SRR6028-3R3Y with 28 mOhm maximum DC resistance is acceptable for substitution. The 3 mOhm difference represents a 12% increase in resistance, which is within typical design tolerances for power inductor applications. Verify thermal performance in your specific circuit if power dissipation is critical.

Q: What is the physical size difference between these parts?

A: The 29L332C measures 7.20mm × 7.20mm × 3.15mm (height). The BPSC000707303R3TS0 is 6.70mm × 6.70mm × 3.00mm, and the SRR6028-3R3Y is 6.80mm × 6.80mm × 3.00mm. All three are nonstandard packages; verify PCB footprint compatibility before substitution.

Q: Are there temperature range considerations for substitution?

A: The original 29L332C operates from -40°C to 85°C. The BPSC000707303R3TS0 operates from -30°C to 100°C, which covers the lower temperature limit at -30°C instead of -40°C. The SRR6028-3R3Y covers -40°C to 125°C, providing full compatibility with the original temperature range and extended high-temperature capability.

Q: Do both substitutes meet the same compliance standards?

A: Both substitute parts are ROHS3 compliant and REACH unaffected, matching the regulatory status of the original 29L332C. Both carry EAR99 export classification.

Q: What is the tolerance specification for inductance on the substitute parts?

A: Both the BPSC000707303R3TS0 and SRR6028-3R3Y specify ±30% inductance tolerance at their respective test frequencies (10 kHz and 100 kHz).