SD52-6R8-R Equivalent & Substitute Parts

Part Overview

The SD52-6R8-R is a 6.8 µH shielded drum core wirewound inductor manufactured by Eaton - Electronics Division. This surface mount component is designed for applications requiring fixed inductance with moderate current handling capability. The part is classified as Active product status with full RoHS compliance and unlimited moisture sensitivity rating.

Substitute parts are identified when equivalent electrical performance can be maintained within the allowed parameter tolerances for this inductor category, specifically matching inductance value, current rating capability, shielding type, and mounting configuration.

Substiute Parts

SD52-6R8-R

Eaton - Electronics DivisionIn Stock: 1030SD52-6R8-R Datasheet

Current PartRFQ

SRU5018-6R8Y

Bourns Inc.In Stock: 3665SRU5018-6R8Y Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SD52-6R8-R is determined by the following criteria:

Primary Matching Parameters:

• Inductance value: 6.8 µH (exact match required)
• Core type: Ferrite drum core, wirewound construction
• Shielding: Shielded configuration
• Mounting: Surface mount technology
• Package footprint: 5.20 x 5.20 mm (identical physical dimensions)
• Height: 2.00 mm maximum seated height

Secondary Compatibility Parameters:

• Current rating: Minimum 1.39 A (equal or greater acceptable)
• DC resistance: Tolerance band allows variation based on manufacturer specification
• Operating temperature: -40°C to 125°C minimum range
• Environmental compliance: RoHS status verification

The substitute part SRU5018-6R8Y from Bourns Inc. meets all primary matching criteria and demonstrates equivalent functional capability within the allowed parameter envelope for this inductor category.

Parameter Comparison

Engineering Selection Recommendations

SD52-6R8-R Selection Criteria:

• Primary choice when Eaton component availability and supply chain continuity are prioritized
• Active product status ensures ongoing manufacturer support
• RoHS Compliant certification meets environmental regulatory requirements
• Specified DC resistance of 77.7 mOhm is the design baseline for thermal and efficiency calculations

SRU5018-6R8Y Selection Criteria:

• Functionally equivalent substitute with identical physical footprint and mounting compatibility
• ROHS3 Compliant status meets current and future environmental standards
• Lower DC resistance (50 mOhm) results in reduced power dissipation compared to primary part
• Higher current rating (1.45 A vs 1.39 A) provides additional margin in current-limited applications
• Broader inductance tolerance (±30%) is acceptable for non-critical inductance applications
• Bourns SRU5018 series availability supports alternative sourcing strategy

Both parts maintain identical operating temperature range and moisture sensitivity classification, ensuring thermal and environmental performance equivalence in specified operating conditions.

Frequently Asked Questions (FAQ)

Q: Can SRU5018-6R8Y be used as a direct replacement for SD52-6R8-R in PCB assembly?

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

Q: What is the significance of the different DC resistance values (77.7 mOhm vs 50 mOhm)?

A: DC resistance directly affects power dissipation and thermal performance. The SRU5018-6R8Y exhibits lower DCR, resulting in reduced I²R losses. For applications sensitive to inductor heating, the lower resistance of the substitute part provides improved thermal characteristics.

Q: Are there inductance tolerance differences between these parts?

A: Yes. SD52-6R8-R specifies ±20% tolerance while SRU5018-6R8Y specifies ±30% tolerance. Both tolerances are acceptable for general-purpose filtering and energy storage applications. Applications requiring tighter inductance control should verify tolerance impact on circuit performance.

Q: Do both parts meet current environmental compliance standards?

A: Yes. SD52-6R8-R is RoHS Compliant. SRU5018-6R8Y is ROHS3 Compliant, representing the current revision of the RoHS directive. Both parts satisfy environmental regulatory requirements for commercial and industrial applications.

Q: What is the saturation current difference and does it affect substitution?

A: SD52-6R8-R saturates at 1.28 A while SRU5018-6R8Y saturates at 1.2 A. Both saturation points exceed the rated current specifications (1.39 A and 1.45 A respectively), maintaining adequate margin. The saturation difference is not a limiting factor for substitution in standard applications.

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

A: SRU5018-6R8Y provides specified Q factor (7.5 @ 7.96 MHz) and self-resonant frequency (60 MHz) data. SD52-6R8-R does not include these parameters. For applications operating above 1 MHz, the Bourns part offers documented high-frequency performance characteristics.

Q: What packaging format is used for both parts?

A: Both SD52-6R8-R and SRU5018-6R8Y are supplied in Tape & Reel (TR) format, standard for automated surface mount assembly processes.