DLW5BSM152SQ2L Common Mode Choke Equivalent & Substitute Parts

Part Overview

The DLW5BSM152SQ2L is a 2-line common mode choke manufactured by Murata Electronics, designed for power and signal line filtering applications. This surface mount component features 1.5 kOhms impedance at 100 MHz with a 1A maximum current rating and 100mOhm DC resistance. The part is discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives that maintain critical electrical and mechanical specifications for seamless integration into existing designs.

Substiute Parts

DLW5BSM152SQ2L

Murata ElectronicsIn Stock: 1556DLW5BSM152SQ2L Datasheet

Current PartRFQ

744237152

Würth ElektronikIn Stock: 2154744237152 Datasheet

MFR RecommendedRFQ

SRF0504-152Y

Bourns Inc.In Stock: 7270SRF0504-152Y Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the DLW5BSM152SQ2L is determined by the following critical parameters:

Primary Matching Criteria:

• Number of Lines: 2
• Impedance @ Frequency: 1.5 kOhms @ 100 MHz
• Mounting Type: Surface Mount
• Package / Case: Horizontal, 4 PC Pad
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level: 1 (Unlimited)

Secondary Compatibility Parameters:

• Current Rating (Max): Must equal or exceed 1A
• DC Resistance (Max): Must not exceed 100mOhm
• Voltage Rating - DC: Must equal or exceed 50V
• Operating Temperature Range: Must encompass -40°C ~ 85°C
• Physical Dimensions: Must accommodate 5.00mm x 5.00mm footprint with 4.50mm maximum height

The identified substitute parts maintain the core electrical characteristics (2-line configuration, 1.5 kOhms impedance at 100 MHz) and mechanical compatibility (surface mount, horizontal 4-pad package, ROHS3 compliance) required for direct replacement in applications designed for the DLW5BSM152SQ2L.

Parameter Comparison

Engineering Selection Recommendations

SRF0504-152Y (Bourns Inc.) - Preferred Direct Replacement

The SRF0504-152Y provides the closest electrical and mechanical match to the DLW5BSM152SQ2L. This part maintains identical impedance (1.5 kOhms @ 100 MHz), current rating (1A), and DC resistance (100mOhm) specifications. Physical dimensions are nearly identical (5.20mm x 5.00mm vs. 5.00mm x 5.00mm), with compatible 4.50mm height envelope. The part is ROHS3 compliant with MSL 1 rating and carries active product status, ensuring long-term availability. Operating temperature range extends to 125°C, exceeding the original specification. This substitute is suitable for direct PCB layout replacement without design modification.

744237152 (Würth Elektronik) - Enhanced Performance Alternative

The 744237152 offers superior electrical performance characteristics while maintaining core functional compatibility. This part delivers the same 1.5 kOhms impedance at 100 MHz with enhanced current capacity (4.5A vs. 1A) and reduced DC resistance (21mOhm vs. 100mOhm). Voltage rating increases to 80V, and operating temperature extends to 125°C. The part carries AEC-Q200 automotive qualification and ROHS3 compliance. Physical dimensions are larger (12.00mm x 11.00mm), requiring PCB layout modification. This substitute is appropriate for applications requiring improved thermal performance or higher current handling capacity, provided board space permits the larger footprint.

Both substitute parts maintain ROHS3 compliance and MSL 1 ratings, ensuring compatibility with standard manufacturing and storage requirements.

Frequently Asked Questions (FAQ)

Q: Can the SRF0504-152Y be used as a direct replacement without PCB modification?

A: Yes. The SRF0504-152Y maintains nearly identical physical dimensions (5.20mm x 5.00mm vs. 5.00mm x 5.00mm) and height (4.80mm vs. 4.50mm), with compatible horizontal 4-pad package configuration. Direct PCB layout replacement is feasible.

Q: Why is the 744237152 larger than the original DLW5BSM152SQ2L?

A: The 744237152 (12.00mm x 11.00mm) is physically larger due to enhanced electrical performance specifications, including 4.5A current capacity and 21mOhm DC resistance. This larger package accommodates improved thermal and electrical characteristics. PCB layout modification is required for this substitute.

Q: Are both substitute parts RoHS compliant?

A: Yes. Both the SRF0504-152Y and 744237152 are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity ratings, meeting standard environmental and manufacturing requirements.

Q: What is the impedance matching requirement for substitution?

A: All substitute parts must maintain 1.5 kOhms impedance at 100 MHz to ensure equivalent filtering performance in signal and power line applications. Both identified substitutes meet this specification.

Q: Can the 744237152 be used in space-constrained applications?

A: No. The 744237152 requires a 12.00mm x 11.00mm footprint, significantly larger than the original 5.00mm x 5.00mm package. Applications with strict board space limitations should use the SRF0504-152Y instead.

Q: What is the difference in DC resistance between substitutes?

A: The SRF0504-152Y matches the original 100mOhm specification, while the 744237152 provides reduced DC resistance at 21mOhm. Lower DC resistance reduces heat generation and power dissipation in high-current applications.

Q: Are both substitutes available in active product status?

A: Yes. Both the SRF0504-152Y and 744237152 carry active product status, ensuring continued availability and supply chain reliability compared to the discontinued DLW5BSM152SQ2L.