29L223C Equivalent & Substitute Parts Reference

Part Overview

The 29L223C is a 22 µH shielded wirewound inductor manufactured by Murata Power Solutions Inc., rated for 1.05 A with a maximum DC resistance of 114mOhm. This component features nonstandard corner terminals and surface mount packaging in a 7.20mm × 7.20mm footprint. The part is classified as obsolete, making equivalent substitutes necessary for ongoing design support and procurement.

Substiute Parts

29L223C

Murata Power Solutions Inc.In Stock: 98929L223C Datasheet

Current PartRFQ

BPSC00070730220TS0

Pulse ElectronicsIn Stock: 955BPSC00070730220TS0 Datasheet

MFR RecommendedRFQ

PA4301.223NLT

Pulse ElectronicsIn Stock: 1120PA4301.223NLT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the 29L223C is determined by the following critical parameters:

• Inductance Value: Must be 22 µH at the specified test frequency
• Current Rating: Minimum 1.05 A to maintain circuit performance
• DC Resistance: Maximum 114mOhm to ensure acceptable power loss
• Shielding: Required to maintain electromagnetic compatibility
• Surface Mount Configuration: Nonstandard package with corner terminals
• Operating Temperature: Must support -40°C ~ 85°C minimum range
• Compliance: RoHS and REACH compliance required

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

Parameter Comparison

Engineering Selection Recommendations

BPSC00070730220TS0 (Pulse Electronics): This substitute maintains the 22 µH inductance and shielded configuration with a saturation current of 870mA. The DC resistance of 128mOhm is within acceptable tolerance of the original 114mOhm specification. The footprint is slightly smaller (6.70mm × 6.70mm) with reduced height (3.00mm), which may require PCB layout verification. Operating temperature range extends to 100°C, exceeding the original specification. Active product status and ROHS3 compliance ensure long-term availability.

PA4301.223NLT (Pulse Electronics): This substitute provides the closest electrical match with a current rating of 1.1 A, exceeding the original 1.05 A requirement. DC resistance of 122.2mOhm is marginally higher than the original specification. The footprint matches the original at 7.20mm × 7.20mm with reduced height (3.00mm). Operating temperature range extends to 125°C. Drum core wirewound construction with ferrite core material and ±20% inductance tolerance provides stable performance. Active product status and ROHS3 compliance support procurement continuity.

Both substitutes are active products with improved compliance certifications and extended operating temperature ranges compared to the obsolete 29L223C.

Frequently Asked Questions (FAQ)

Q: Can the BPSC00070730220TS0 be used as a direct replacement for the 29L223C?

A: The BPSC00070730220TS0 meets the core electrical requirements: 22 µH inductance, shielded configuration, and DC resistance within acceptable tolerance. However, the smaller footprint (6.70mm × 7.20mm versus 7.20mm × 7.20mm) requires verification of PCB layout compatibility. The saturation current of 870mA is below the original 1.05 A rating, which must be evaluated against actual circuit current demands.

Q: What is the difference between the two substitute parts?

A: PA4301.223NLT offers a higher current rating (1.1 A) and matches the original footprint dimensions (7.20mm × 7.20mm), making it suitable for direct PCB replacement. BPSC00070730220TS0 has a smaller footprint and lower saturation current but provides a more compact solution. Both maintain 22 µH inductance and shielded construction.

Q: Are there any temperature range considerations when substituting?

A: The original 29L223C operates from -40°C to 85°C. Both substitutes extend this range: BPSC00070730220TS0 to -30°C ~ 100°C and PA4301.223NLT to -40°C ~ 125°C. If the circuit operates below -30°C, PA4301.223NLT is the appropriate choice. For standard industrial applications, both substitutes provide adequate temperature coverage.

Q: How do the DC resistance values compare?

A: The original 29L223C specifies 114mOhm maximum. BPSC00070730220TS0 is rated at 128mOhm maximum, and PA4301.223NLT at 122.2mOhm maximum. Both substitutes have slightly higher resistance, resulting in marginally increased power dissipation. For applications sensitive to inductor losses, verify that the additional resistance does not exceed circuit design tolerances.

Q: What packaging considerations apply to these substitutes?

A: All three parts use nonstandard surface mount packages with corner terminals. The 29L223C and PA4301.223NLT share identical footprints (7.20mm × 7.20mm), allowing direct PCB replacement. The BPSC00070730220TS0 has a smaller footprint (6.70mm × 6.70mm), which may require PCB layout modifications. Height differences (3.15mm original versus 3.00mm substitutes) are negligible for most applications.