SD52-150-R Equivalent & Substitute Parts

Part Overview

The SD52-150-R is a 15 µH shielded drum core wirewound inductor manufactured by Eaton - Electronics Division. This surface mount component is rated for 970 mA continuous current with a DC resistance of 161.8 mOhm and operates across the temperature range of -40°C to 125°C. The part is RoHS compliant and carries an active product status. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are required due to component availability, supply chain considerations, or design flexibility within specified parameter tolerances.

Substiute Parts

SD52-150-R

Eaton - Electronics DivisionIn Stock: 4104SD52-150-R Datasheet

Current PartRFQ

SRU5018-150Y

Bourns Inc.In Stock: 3735SRU5018-150Y Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SD52-150-R is determined by strict equivalence in the following electrical and mechanical parameters:

Primary Substitution Criteria:

• Inductance value: 15 µH (exact match required)
• Core type: Ferrite drum core, wirewound, shielded configuration
• Mounting: Surface mount technology
• Package footprint: 5.20 mm × 5.20 mm × 2.00 mm maximum height
• Operating temperature range: -40°C to 125°C minimum
• Inductance measurement frequency: 100 kHz

Secondary Compatibility Parameters:

• Current rating: Minimum 950 mA (substitute must support primary circuit current requirements)
• DC resistance: Acceptable range determined by circuit design specifications
• Saturation current: Minimum 800 mA
• RoHS and environmental compliance status

The SRU5018-150Y from Bourns Inc. meets all primary substitution criteria and maintains functional equivalence within the specified parameter envelope.

Parameter Comparison

Engineering Selection Recommendations

SD52-150-R (Eaton - Electronics Division):

• Primary selection when Eaton component availability and supply chain continuity are prioritized
• Active product status with established manufacturing and distribution channels
• RoHS compliant with standard MSL 1 rating
• Higher DC resistance specification (161.8 mOhm) suitable for applications where power dissipation characteristics are designed around this value

SRU5018-150Y (Bourns Inc.):

• Suitable substitute when Bourns supply chain or component availability is preferred
• Active product status with ROHS3 compliance certification
• Lower DC resistance (100 mOhm) results in reduced power dissipation and improved efficiency in current-carrying applications
• Identical mechanical footprint and thermal operating range ensure direct PCB compatibility
• Slightly broader inductance tolerance (±30% vs. ±20%) requires verification against circuit design margin requirements

Both components are certified for unlimited moisture sensitivity (MSL 1) and operate within identical temperature specifications. Selection between these parts is determined by supply availability, design margin requirements for DC resistance, and organizational component qualification status.

Frequently Asked Questions (FAQ)

Q: Can the SRU5018-150Y directly replace the SD52-150-R on an existing PCB?

A: Yes. Both components share identical package dimensions (5.20 mm × 5.20 mm × 2.00 mm maximum height) and surface mount footprint. No PCB layout modifications are required for mechanical compatibility.

Q: What is the impact of the different DC resistance values (161.8 mOhm vs. 100 mOhm)?

A: The SRU5018-150Y exhibits lower DC resistance, resulting in reduced resistive power loss at rated current. For a 970 mA circuit, the SD52-150-R dissipates approximately 152 mW, while the SRU5018-150Y dissipates approximately 94 mW. Circuit thermal design must account for this difference if the original design was optimized around the higher resistance value.

Q: Are the inductance tolerance differences significant?

A: The SD52-150-R specifies ±20% tolerance while the SRU5018-150Y specifies ±30%. Both parts are measured at 100 kHz. Circuit designs must verify that the broader tolerance of the substitute part remains within acceptable operating margins for the application.

Q: What is the saturation current difference between these parts?

A: The SD52-150-R saturates at 880 mA while the SRU5018-150Y saturates at 800 mA. Both values exceed the rated continuous current specifications (970 mA and 950 mA respectively), indicating adequate saturation margin. Applications operating near maximum current should verify saturation performance against specific circuit requirements.

Q: Are both parts RoHS compliant?

A: Yes. The SD52-150-R is RoHS compliant. The SRU5018-150Y is ROHS3 compliant. Both meet current environmental and regulatory requirements. Both components carry MSL 1 (Unlimited) moisture sensitivity ratings.

Q: What is the Q factor and self-resonant frequency of these inductors?

A: The SD52-150-R does not provide Q factor or self-resonant frequency specifications in the available data. The SRU5018-150Y specifies Q = 12 at 2.52 MHz and self-resonant frequency of 40 MHz. Applications requiring specific high-frequency performance characteristics should reference manufacturer datasheets for complete frequency response data.

Q: Can these parts be used interchangeably in high-frequency switching applications?

A: Both components are rated for 100 kHz inductance measurement frequency and operate within -40°C to 125°C. High-frequency performance depends on self-resonant frequency, Q factor, and frequency-dependent impedance characteristics. The SRU5018-150Y provides Q and self-resonant frequency data (Q = 12 @ 2.52 MHz, fSR = 40 MHz). Applications above 100 kHz should reference complete frequency response curves from manufacturer datasheets.