1255AY-150M=P3 Equivalent & Substitute Parts

Part Overview

The 1255AY-150M=P3 is a 15 µH shielded drum core wirewound inductor manufactured by Murata Electronics, designed for surface mount applications. This component is rated for 2.4 A continuous current with a DC resistance of 63 mOhm and operates at 100 kHz test frequency. The part is currently active in production with full RoHS3 compliance and unlimited moisture sensitivity rating. Substitute parts are identified when equivalent inductance values, shielding characteristics, and current ratings meet application requirements within specified tolerance ranges.

Substiute Parts

1255AY-150M=P3

Murata ElectronicsIn Stock: 33411255AY-150M=P3 Datasheet

Current PartRFQ

BWVS00606045150M00

Pulse ElectronicsIn Stock: 3706BWVS00606045150M00 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 1255AY-150M=P3 are qualified based on the following critical parameters:

• Inductance value: 15 µH (matching specification)
• Inductance tolerance: ±20% (matching specification)
• Shielding: Shielded configuration required
• Core material: Ferrite
• Mounting type: Surface Mount
• Test frequency: 100 kHz
• Current rating: Minimum 2.2 A acceptable (within application margin)
• DC resistance: Up to 80 mOhm acceptable (within thermal budget)
• Saturation current: Minimum 2.5 A required
• Compliance: RoHS3 and REACH requirements met

The BWVS00606045150M00 from Pulse Electronics qualifies as a substitute based on matching inductance, tolerance, shielding, core material, and mounting specifications. Variations in current rating (2.2 A vs. 2.4 A) and DC resistance (80 mOhm vs. 63 mOhm) remain within acceptable design margins for equivalent circuit performance.

Parameter Comparison

Engineering Selection Recommendations

Both the 1255AY-150M=P3 and BWVS00606045150M00 maintain active product status with full RoHS3 compliance and REACH unaffected classification. Selection between these parts should be based on:

• Current margin requirements: The 1255AY-150M=P3 provides 2.4 A rating versus 2.2 A for the BWVS00606045150M00. Applications operating near maximum current should prioritize the Murata part.
• Thermal considerations: The BWVS00606045150M00 exhibits higher DC resistance (80 mOhm vs. 63 mOhm), resulting in increased power dissipation. Thermal analysis is required for high-frequency or continuous-duty applications.
• Physical constraints: The BWVS00606045150M00 offers a smaller footprint (6.00mm x 6.00mm) with slightly greater height (4.70mm vs. 4.50mm). PCB layout constraints may favor one configuration over the other.
• Temperature range: The BWVS00606045150M00 specifies -55°C ~ 125°C operating range, providing explicit temperature derating information absent from the 1255AY-150M=P3 datasheet.

Frequently Asked Questions (FAQ)

Q: Can BWVS00606045150M00 directly replace 1255AY-150M=P3 in existing designs?

A: Direct substitution is possible when circuit design margins accommodate the 2.2 A current rating and 80 mOhm DC resistance of the Pulse Electronics part. Applications operating below 2.2 A continuous current and tolerating the additional 17 mOhm resistance increase are compatible. PCB layout modifications may be required due to the 0.30mm footprint reduction and 0.20mm height increase.

Q: What is the impact of increased DC resistance on circuit performance?

A: The 17 mOhm increase in DC resistance (from 63 mOhm to 80 mOhm) results in proportionally higher I²R losses. At 2.2 A, this represents approximately 82 mW additional power dissipation compared to the original part at equivalent current. Thermal management and efficiency calculations must account for this difference.

Q: Are both parts suitable for high-frequency switching applications?

A: Both parts are tested at 100 kHz and maintain shielded ferrite core construction suitable for EMI suppression in switching circuits. The ±20% inductance tolerance applies equally to both parts. Frequency-dependent performance characteristics not provided in the specification require datasheet review or empirical testing.

Q: What packaging differences exist between these parts?

A: The 1255AY-150M=P3 is supplied in standard packaging configuration. The BWVS00606045150M00 is supplied in Tape & Reel (TR) format. Both maintain identical MSL 1 (Unlimited) moisture sensitivity ratings and require no special handling during storage or assembly.

Q: Are there compliance or certification differences?

A: Both parts maintain identical RoHS3 compliance and REACH unaffected status. No additional certifications or compliance variations exist between these components.