29L683C Equivalent & Substitute Parts

Part Overview

The 29L683C is a 68 µH shielded wirewound inductor manufactured by Murata Power Solutions Inc., designed for surface mount applications with a current rating of 530 mA and maximum DC resistance of 307mOhm. This component is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. The part features nonstandard corner terminals and operates across a temperature range of -40°C to 85°C.

Substiute Parts

29L683C

Murata Power Solutions Inc.In Stock: 89229L683C Datasheet

Current PartRFQ

BPSC00070730680TS0

Pulse ElectronicsIn Stock: 899BPSC00070730680TS0 Datasheet

MFR RecommendedRFQ

PA4301.683NLT

Pulse ElectronicsIn Stock: 1035PA4301.683NLT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the 29L683C is determined by the following critical parameters:

• Inductance Value: 68 µH (exact match required)
• Current Rating: Minimum 530 mA to maintain circuit performance
• DC Resistance: Maximum 307mOhm to ensure acceptable power loss
• Shielding: Shielded configuration required
• Mounting Type: Surface mount compatibility
• Package Footprint: Physical dimensions must accommodate 7.20mm x 7.20mm mounting area
• Operating Temperature Range: Must support -40°C minimum and 85°C maximum
• Compliance: RoHS compliance required for regulatory alignment

The substitute parts listed below meet these core electrical and mechanical requirements while offering active product status and improved availability.

Parameter Comparison

Engineering Selection Recommendations

BPSC00070730680TS0 is suitable for applications where the reduced saturation current of 550 mA is acceptable and the smaller footprint (6.70mm x 6.70mm) provides layout advantages. This part offers the lowest DC resistance at 304mOhm Max and extended operating temperature range to 100°C. Active product status ensures long-term availability.

PA4301.683NLT provides the highest current rating at 607 mA, offering design margin above the original 530 mA specification. The extended temperature range to 125°C and identical footprint dimensions (7.20mm x 7.20mm) to the original part make this option suitable for applications requiring maximum current headroom. DC resistance of 364mOhm Max is within acceptable limits for most circuit designs. Active product status and ROHS3 compliance support modern manufacturing requirements.

Both substitute parts are manufactured by Pulse Electronics with active product status, ensuring supply chain continuity and compliance with current regulatory standards.

Frequently Asked Questions (FAQ)

Q: Can BPSC00070730680TS0 replace 29L683C directly? A: BPSC00070730680TS0 meets the core electrical requirements of 68 µH inductance, shielded configuration, and DC resistance specification. The smaller footprint (6.70mm x 6.70mm versus 7.20mm x 7.20mm) requires PCB layout verification. The saturation current of 550 mA exceeds the original 530 mA rating, providing adequate margin.

Q: What is the primary difference between the two substitute parts? A: PA4301.683NLT offers higher current rating (607 mA) and identical footprint dimensions to the original part. BPSC00070730680TS0 provides a smaller footprint with lower DC resistance. Selection depends on circuit current requirements and available PCB space.

Q: Are both substitute parts RoHS compliant? A: Yes, both BPSC00070730680TS0 and PA4301.683NLT are ROHS3 compliant, meeting current environmental and regulatory requirements.

Q: Does the DC resistance difference affect circuit performance? A: PA4301.683NLT has 364mOhm Max DCR compared to the original 307mOhm Max. This 57mOhm increase results in proportionally higher power dissipation. Circuit analysis is required to confirm acceptability for specific applications.

Q: What packaging format is available for the substitute parts? A: Both substitute parts are supplied in Tape & Reel (TR) format, standard for automated assembly processes.

Q: Can the smaller footprint of BPSC00070730680TS0 cause compatibility issues? A: The 6.70mm x 6.70mm footprint is smaller than the original 7.20mm x 7.20mm. PCB layout and component placement verification is necessary to confirm mechanical compatibility with existing designs.