Equivalent & Substitute Parts for DRA73-100-R

Part Overview

The DRA73-100-R is a 10 µH shielded wirewound inductor manufactured by Eaton - Electronics Division. This surface mount component is rated for 2.11 A continuous current with a saturation current of 2.39 A and a DC resistance of 64 mOhm. The part is AEC-Q200 qualified, ROHS3 compliant, and operates across the temperature range of -40°C to 165°C. As an active product with 2469 units in stock, alternative components may be required for design flexibility, supply chain optimization, or specific application requirements where electrical or mechanical parameters differ within acceptable tolerances.

Substiute Parts

DRA73-100-R

Eaton - Electronics DivisionIn Stock: 2486DRA73-100-R Datasheet

Current PartRFQ

B82472G4103M000

EPCOS - TDK ElectronicsIn Stock: 4878B82472G4103M000 Datasheet

SimilarRFQ

SRR0735A-100M

Bourns Inc.In Stock: 6230SRR0735A-100M Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the DRA73-100-R is determined by strict alignment of the following electrical and mechanical parameters:

Primary Substitution Criteria:

• Inductance value: 10 µH (fixed requirement)
• Inductance tolerance: ±20% (fixed requirement)
• Shielding: Shielded (fixed requirement)
• Mounting type: Surface Mount (fixed requirement)
• RoHS compliance: ROHS3 Compliant (fixed requirement)
• Moisture sensitivity: MSL 1 (fixed requirement)

Secondary Compatibility Parameters:

• Current rating: Must support minimum 2.11 A continuous operation
• Saturation current: Must support minimum 2.39 A
• DC resistance: Lower or equal values preferred to minimize power dissipation
• Operating temperature range: Must encompass or overlap the -40°C to 165°C range
• Package dimensions: Nonstandard form factor; physical footprint compatibility required

The substitute parts listed below meet all primary criteria and maintain electrical performance within acceptable operating margins for the specified application category.

Parameter Comparison

Engineering Selection Recommendations

DRA73-100-R (Primary Component): The DRA73-100-R remains the optimal selection for applications requiring the full specified current rating of 2.11 A and saturation current of 2.39 A. This component carries AEC-Q200 qualification, confirming suitability for automotive and high-reliability applications. The extended operating temperature range to 165°C provides thermal margin for demanding environments. Packaging in Tape & Reel format supports high-volume manufacturing processes.

B82472G4103M000 (EPCOS - TDK Electronics): This substitute is suitable for applications where current requirements do not exceed 1.7 A continuous operation and saturation current remains below 1.34 A. The lower current ratings restrict this component to reduced-power circuit designs. The extended lower temperature limit of -55°C provides advantage in cryogenic or extreme cold environments. However, the maximum operating temperature of 125°C is 40°C lower than the primary component, limiting use in high-temperature applications. Cut Tape packaging may require additional handling for automated assembly. AEC-Q200 qualification is not provided for this substitute.

SRR0735A-100M (Bourns Inc.): This substitute provides the closest electrical performance match to the DRA73-100-R, supporting 2.1 A continuous current and 1.85 A saturation current. DC resistance of 72 mOhm is within 8 mOhm of the primary component, minimizing power dissipation differences. AEC-Q200 qualification confirms automotive-grade reliability. The operating temperature range of -40°C to 125°C aligns with the lower bound of the primary component but does not extend to 165°C. Tape & Reel packaging matches the primary component format. Physical dimensions are nearly identical, with only 0.15mm height difference, ensuring PCB layout compatibility.

Selection Criteria Summary:

• For maximum current capacity and extended temperature range: DRA73-100-R
• For low-current applications with extreme cold tolerance: B82472G4103M000
• For high-current applications with automotive qualification and minimal performance deviation: SRR0735A-100M

Frequently Asked Questions (FAQ)

Q: Can B82472G4103M000 be used as a direct replacement for DRA73-100-R?

A: B82472G4103M000 is not a direct replacement. The current rating of 1.7 A is 0.41 A lower than the DRA73-100-R specification of 2.11 A. Saturation current is 1.34 A versus 2.39 A. Use this substitute only in circuit designs where actual operating current does not exceed 1.7 A. The maximum operating temperature of 125°C is also 40°C lower than the primary component.

Q: Is SRR0735A-100M compatible with the DRA73-100-R footprint?

A: SRR0735A-100M has nearly identical physical dimensions. The length and width are 7.30mm versus 7.60mm (0.30mm smaller), and height is 3.70mm versus 3.55mm (0.15mm taller). These differences are within typical PCB design tolerances for nonstandard surface mount packages. Verify footprint clearance in your specific PCB layout before implementation.

Q: What is the impact of higher DC resistance in substitute parts?

A: B82472G4103M000 has 80 mOhm DCR (16 mOhm higher than DRA73-100-R), and SRR0735A-100M has 72 mOhm DCR (8 mOhm higher). Higher DC resistance increases power dissipation according to P = I²R. At 2.1 A, the SRR0735A-100M dissipates approximately 0.32 mW more than the primary component. For low-power applications, this difference is negligible; for high-current designs, thermal analysis is required.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. DRA73-100-R, B82472G4103M000, and SRR0735A-100M are all ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating. All parts are suitable for standard PCB assembly processes without special moisture control requirements.

Q: Which substitute part has AEC-Q200 qualification?

A: SRR0735A-100M carries AEC-Q200 qualification, confirming automotive-grade reliability testing. DRA73-100-R also has AEC-Q200 qualification. B82472G4103M000 does not list AEC-Q200 qualification in the provided specifications.

Q: What is the difference between Tape & Reel and Cut Tape packaging?

A: Tape & Reel packaging provides continuous component strips on reels suitable for high-speed automated pick-and-place assembly. Cut Tape provides individual component strips cut to specified lengths, typically for lower-volume or manual assembly processes. DRA73-100-R and SRR0735A-100M use Tape & Reel; B82472G4103M000 uses Cut Tape.

Q: Can I use B82472G4103M000 in a -40°C to 165°C temperature range application?

A: No. B82472G4103M000 has a maximum operating temperature of 125°C, which is 40°C below the upper limit of the DRA73-100-R specification. Use this substitute only in applications where the operating temperature does not exceed 125°C.

Q: What inventory levels are available for each part?

A: DRA73-100-R has 2469 units in stock. B82472G4103M000 has 4815 units in stock. SRR0735A-100M has 6200 units in stock. All parts are listed as Active products with new original inventory available.