Equivalent & Substitute Parts for 29L682C

Part Overview

The 29L682C is a 6.8 µH shielded wirewound inductor manufactured by Murata Power Solutions Inc., rated for 1.8 A with a maximum DC resistance of 48mOhm. This component is classified as obsolete, making substitute parts necessary for new designs and ongoing production requirements. The part features nonstandard corner terminals and surface mount packaging, with an operating temperature range of -40°C to 85°C.

Key Parameters

Parameter	Value
Inductance	6.8 µH
Current Rating	1.8 A
DC Resistance (DCR)	48mOhm Max
Shielding	Shielded
Mounting Type	Surface Mount
Operating Temperature	-40°C ~ 85°C
Package Type	Nonstandard, Corner Terminals
Size	7.20mm x 7.20mm x 3.15mm (Max Height)
RoHS Status	RoHS Compliant

Substitute Part Grouping Explanation

Substitute parts for the 29L682C are qualified based on the following critical parameters:

Inductance Value: All substitutes maintain 6.8 µH at 10 kHz test frequency
Shielding: All substitutes are shielded inductors
Mounting Type: All substitutes are surface mount components
DC Resistance: Substitute parts maintain DCR values within acceptable operating margins (46.8mOhm to 50mOhm)
Current Handling: Substitute parts support current ratings of 1.3 A to 1.88 A, covering the 1.8 A requirement
Package Configuration: All substitutes use nonstandard packages compatible with the original footprint dimensions
Regulatory Compliance: All substitutes maintain RoHS and REACH compliance

The three qualified substitutes are manufactured by Pulse Electronics and represent active product lines, addressing the obsolescence of the original 29L682C component.

Parameter Comparison

Parameter	29L682C (Original)	BPSC000707306R8MS0	BPSC000707306R8TS0	PA4301.682NLT
Manufacturer	Murata Power Solutions Inc.	Pulse Electronics	Pulse Electronics	Pulse Electronics
Inductance	6.8 µH	6.8 µH	6.8 µH	6.8 µH
Current Rating	1.8 A	1.3 A (Isat)	1.3 A (Isat)	1.88 A
DC Resistance (DCR)	48mOhm Max	50mOhm Max	50mOhm Max	46.8mOhm Max
Shielding	Shielded	Shielded	Shielded	Shielded
Type	Wirewound	Ferrite Core	Ferrite Core	Drum Core, Wirewound
Operating Temperature	-40°C ~ 85°C	-30°C ~ 100°C	-30°C ~ 100°C	-40°C ~ 125°C
Size (L x W)	7.20mm x 7.20mm	6.70mm x 6.70mm	6.70mm x 6.70mm	7.20mm x 7.20mm
Height (Max)	3.15mm	3.00mm	3.00mm	3.00mm
Product Status	Obsolete	Active	Active	Active
RoHS Status	RoHS Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Packaging	Nonstandard, Corner Terminals	Tape & Reel (TR)	Tape & Reel (TR)	Tape & Reel (TR)

Engineering Selection Recommendations

PA4301.682NLT is the primary substitute for the 29L682C. This part maintains identical footprint dimensions (7.20mm x 7.20mm), exceeds the current rating requirement (1.88 A vs. 1.8 A), and provides superior DC resistance performance (46.8mOhm Max). The extended operating temperature range (-40°C ~ 125°C) and ROHS3 compliance ensure compatibility with current manufacturing standards. The drum core wirewound construction aligns with the original component architecture.

BPSC000707306R8MS0 and BPSC000707306R8TS0 serve as secondary substitutes. Both parts maintain the 6.8 µH inductance and shielded configuration. The primary consideration is the reduced saturation current (1.3 A Isat) compared to the original 1.8 A rating. These parts are suitable for applications where the saturation current margin is acceptable. The slightly smaller footprint (6.70mm x 6.70mm) may require PCB layout verification. The tolerance specifications differ between the two parts (±20% vs. ±30%), with BPSC000707306R8MS0 offering tighter tolerance control.

All three substitutes maintain RoHS and REACH compliance, ensuring regulatory alignment with current procurement standards.

Frequently Asked Questions (FAQ)

Q: Can the BPSC000707306R8TS0 and BPSC000707306R8MS0 be used interchangeably with the 29L682C?

A: Both parts maintain the same 6.8 µH inductance and 50mOhm Max DC resistance. The primary difference is inductance tolerance (±30% vs. ±20%). The saturation current rating of 1.3 A is lower than the original 1.8 A specification. These parts are suitable if the application circuit can operate within the reduced saturation margin.

Q: What is the impact of the smaller footprint on BPSC parts (6.70mm vs. 7.20mm)?

A: The BPSC000707306R8MS0 and BPSC000707306R8TS0 have a reduced footprint of 6.70mm x 6.70mm compared to the original 7.20mm x 7.20mm. PCB layout verification is required to confirm compatibility with existing pad patterns and trace routing.

Q: Why is PA4301.682NLT recommended as the primary substitute?

A: The PA4301.682NLT maintains the original 7.20mm x 7.20mm footprint, exceeds the current rating (1.88 A vs. 1.8 A), and provides lower DC resistance (46.8mOhm Max). The extended temperature range and active product status ensure long-term availability and manufacturing support.

Q: Are all substitutes RoHS compliant?

A: Yes. All three substitute parts are ROHS3 compliant, meeting current regulatory requirements for electronic component procurement.

Q: What is the difference between the BPSC parts in terms of tolerance?

A: BPSC000707306R8MS0 specifies ±20% inductance tolerance, while BPSC000707306R8TS0 specifies ±30%. For applications requiring tighter inductance control, BPSC000707306R8MS0 is the preferred selection.

Q: Can these substitutes operate at the original temperature range of -40°C to 85°C?

A: Yes. All three substitutes support the original operating temperature range. PA4301.682NLT and the BPSC parts extend the upper temperature limit to 100°C and 125°C respectively, providing additional thermal margin.

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