Equivalent & Substitute Parts for 29L224C

Part Overview

The Murata Power Solutions 29L224C is a 220 µH shielded wirewound inductor rated for 360 mA with a maximum DC resistance of 1.06 Ohm. This component is classified as obsolete, making equivalent substitutes necessary for ongoing production and maintenance applications. The part features nonstandard corner terminals and surface mount packaging in a 7.20mm x 7.20mm footprint. Identifying compatible alternatives ensures design continuity and supply chain reliability.

Key Parameters

Parameter	Value
Inductance	220 µH
Current Rating	360 mA
DC Resistance (Max)	1.06 Ohm
Shielding	Shielded
Mounting Type	Surface Mount
Operating Temperature Range	-40°C to 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

Substitution eligibility for the 29L224C is determined by the following critical parameters:

Inductance Value: Must be 220 µH at the specified test frequency
Current Rating: Must support minimum 360 mA operation
DC Resistance: Must not exceed 1.06 Ohm maximum
Shielding: Must be shielded to maintain electromagnetic isolation
Mounting Type: Must be surface mount compatible
Operating Temperature: Must encompass or exceed the -40°C to 85°C range
Package Footprint: Physical dimensions must be compatible with existing PCB layouts
Regulatory Compliance: Must maintain RoHS and REACH compliance status

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

Parameter Comparison

Parameter	29L224C (Murata)	BPSC00070730221MS0 (Pulse)	BPSC00070730221TS0 (Pulse)	PA4301.224NLT (Pulse)
Inductance	220 µH	220 µH	220 µH	220 µH
Current Rating (mA)	360	270	270	350
DC Resistance Max (Ohm)	1.06	1.3	1.3	1.11
Saturation Current (mA)	—	270	270	—
Shielding	Shielded	Shielded	Shielded	Shielded
Operating Temperature Range	-40°C to 85°C	-30°C to 100°C	-30°C to 100°C	-40°C to 125°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package Size (mm)	7.20 x 7.20 x 3.15	6.70 x 6.70 x 3.00	6.70 x 6.70 x 3.00	7.20 x 7.20 x 3.00
Product Status	Obsolete	Active	Active	Active
RoHS Status	RoHS Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Packaging	—	Tape & Reel	Tape & Reel	Tape & Reel

Engineering Selection Recommendations

PA4301.224NLT is the primary substitute candidate. It maintains the original 7.20mm x 7.20mm footprint, supports 350 mA operation (within 3% of the original 360 mA rating), and features a maximum DC resistance of 1.11 Ohm (4.7% higher than the original). The extended operating temperature range (-40°C to 125°C) provides superior thermal margin. Active product status ensures long-term availability and supply chain stability. ROHS3 compliance meets current regulatory requirements.

BPSC00070730221TS0 and BPSC00070730221MS0 are secondary alternatives. Both deliver 220 µH inductance with 1.3 Ohm maximum DC resistance and 270 mA saturation current. The reduced current rating (270 mA versus 360 mA original) and increased DC resistance represent trade-offs requiring circuit-level evaluation. The smaller 6.70mm x 6.70mm footprint may require PCB layout modifications. Both parts are active products with ROHS3 compliance and extended temperature ranges (-30°C to 100°C).

Selection should prioritize PA4301.224NLT for direct replacement applications where footprint and current rating preservation are critical. The Pulse Electronics BPSC variants are suitable where circuit design permits reduced current headroom and footprint adjustment.

Frequently Asked Questions (FAQ)

Q: Can BPSC00070730221MS0 and BPSC00070730221TS0 be used interchangeably?

A: Both parts share identical electrical specifications (220 µH, 1.3 Ohm DCR, 270 mA saturation) and physical dimensions (6.70mm x 6.70mm). The primary difference is inductance tolerance: BPSC00070730221MS0 specifies ±20% tolerance while BPSC00070730221TS0 specifies ±30% tolerance. Selection depends on circuit tolerance requirements.

Q: What is the impact of increased DC resistance in substitute parts?

A: The original 29L224C specifies 1.06 Ohm maximum DCR. PA4301.224NLT increases this to 1.11 Ohm (4.7% increase), while BPSC variants increase to 1.3 Ohm (22.6% increase). Higher DCR results in increased power dissipation and heat generation. Circuit designs must account for this additional resistive loss, particularly in high-current or continuous-duty applications.

Q: Are the smaller BPSC packages compatible with existing PCB layouts?

A: BPSC00070730221MS0 and BPSC00070730221TS0 measure 6.70mm x 6.70mm, compared to the original 7.20mm x 7.20mm footprint. Physical compatibility depends on PCB pad spacing and component placement constraints. Layout verification is required before implementation.

Q: What is the significance of current rating differences?

A: The original 29L224C is rated for 360 mA continuous operation. PA4301.224NLT supports 350 mA (97% of original rating), while BPSC variants specify 270 mA saturation current (75% of original rating). Applications operating near the original 360 mA limit must evaluate whether reduced current headroom is acceptable for the intended circuit function.

Q: Do all substitute parts maintain RoHS compliance?

A: Yes. The original 29L224C is RoHS Compliant. All three substitute parts carry ROHS3 Compliant certification, meeting current regulatory standards for hazardous substance restrictions.

Q: What are the temperature operating range implications?

A: The original part operates from -40°C to 85°C. PA4301.224NLT extends this to -40°C to 125°C, providing 40°C additional high-temperature margin. BPSC variants operate from -30°C to 100°C, reducing low-temperature capability by 10°C while extending high-temperature operation by 15°C. Application thermal requirements determine suitability.

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