Equivalent & Substitute Parts for 29L222C

Part Overview

The 29L222C is a 2.2 µH shielded wirewound inductor manufactured by Murata Power Solutions Inc., rated for 3 A continuous current with a maximum DC resistance of 20mOhm. 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 in a 7.20mm x 7.20mm footprint.

Key Parameters

Parameter	Value
Inductance	2.2 µH
Current Rating	3 A
DC Resistance (DCR)	20mOhm Max
Shielding	Shielded
Mounting Type	Surface Mount
Operating Temperature Range	-40°C ~ 85°C
Package Type	Nonstandard, Corner Terminals
Size	7.20mm x 7.20mm x 3.15mm (Max Height)

Substitute Part Grouping Explanation

Substitution eligibility for the 29L222C is determined by the following critical parameters:

Inductance Value: Must be 2.2 µH at 10 kHz test frequency
Current Rating: Minimum 3 A continuous current capability
Shielding: Must be shielded construction
Mounting: Surface mount configuration required
DC Resistance: Lower or equivalent DCR values are acceptable
Operating Temperature: Must support minimum -40°C to 85°C range
RoHS Compliance: ROHS3 compliance preferred for regulatory alignment

Three substitute parts meet these criteria: BPSC000707302R2MS0, BPSC000707302R2TS0 (both from Pulse Electronics BPSC series), and PA4301.222NLT (Pulse Electronics PA4301 series). All three maintain the 2.2 µH inductance specification and support the required 3 A current rating with shielded construction.

Parameter Comparison

Parameter	29L222C (Main)	BPSC000707302R2MS0	BPSC000707302R2TS0	PA4301.222NLT
Manufacturer	Murata Power Solutions	Pulse Electronics	Pulse Electronics	Pulse Electronics
Inductance	2.2 µH	2.2 µH	2.2 µH	2.2 µH
Current Rating	3 A	3 A (Isat)	3 A (Isat)	3.15 A
DC Resistance (DCR)	20mOhm Max	35mOhm Max	35mOhm Max	24.7mOhm Max
Shielding	Shielded	Shielded	Shielded	Shielded
Operating Temperature	-40°C ~ 85°C	-30°C ~ 100°C	-30°C ~ 100°C	-40°C ~ 125°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package Size	7.20mm x 7.20mm x 3.15mm	6.70mm x 6.70mm x 3.00mm	6.70mm x 6.70mm x 3.00mm	7.20mm x 7.20mm x 3.00mm
Product Status	Obsolete	Active	Active	Active
RoHS Status	RoHS Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Packaging	Standard	Tape & Reel (TR)	Tape & Reel (TR)	Tape & Reel (TR)

Engineering Selection Recommendations

PA4301.222NLT is the primary substitute for new designs. This part maintains identical footprint dimensions (7.20mm x 7.20mm) to the 29L222C, offers superior current rating (3.15 A vs. 3 A), and provides the lowest DCR among substitutes at 24.7mOhm Max. The extended operating temperature range (-40°C ~ 125°C) and ROHS3 compliance support long-term production requirements. This part is actively manufactured and widely available.

BPSC000707302R2MS0 and BPSC000707302R2TS0 are secondary substitutes suitable for applications where footprint reduction is acceptable. Both parts feature smaller dimensions (6.70mm x 6.70mm) and maintain full electrical compatibility with the 29L222C specification. The BPSC000707302R2MS0 variant offers ±20% inductance tolerance, while BPSC000707302R2TS0 provides ±30% tolerance. Both are actively produced with ROHS3 compliance and Tape & Reel packaging for automated assembly.

All three substitutes are RoHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic component manufacturing and distribution.

Frequently Asked Questions (FAQ)

Q: Can BPSC000707302R2MS0 and BPSC000707302R2TS0 be used interchangeably with the 29L222C?

A: Both parts meet the core electrical requirements (2.2 µH inductance, 3 A current rating, shielded construction). The primary difference is footprint size: BPSC parts measure 6.70mm x 6.70mm versus the 29L222C at 7.20mm x 7.20mm. PCB layout modifications are required for these substitutes.

Q: What is the impact of higher DC resistance in the BPSC substitutes?

A: The BPSC series exhibits 35mOhm Max DCR compared to 20mOhm Max for the 29L222C. This 75% increase in resistance results in higher power dissipation and heat generation at rated current. Applications with strict thermal or efficiency requirements should prioritize PA4301.222NLT, which maintains 24.7mOhm Max DCR.

Q: Are all three substitutes suitable for production assembly?

A: Yes. PA4301.222NLT and both BPSC variants are supplied in Tape & Reel packaging, supporting automated pick-and-place assembly. All three parts carry ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity ratings.

Q: Does operating temperature range affect substitute selection?

A: The 29L222C operates -40°C ~ 85°C. PA4301.222NLT extends this to -40°C ~ 125°C, providing additional thermal margin. BPSC variants operate -30°C ~ 100°C, which covers the original range with upper extension. Applications requiring operation below -30°C must use PA4301.222NLT or the original 29L222C.

Q: What is the inductance tolerance difference between BPSC variants?

A: BPSC000707302R2MS0 specifies ±20% inductance tolerance, while BPSC000707302R2TS0 specifies ±30%. For applications requiring tighter inductance control, BPSC000707302R2MS0 is preferred.

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