DRA73-151-R Equivalent & Substitute Parts

Part Overview

The DRA73-151-R is a 150 µH shielded wirewound inductor manufactured by Eaton - Electronics Division. This surface mount component is rated for 551 mA continuous current with a DC resistance of 932 mOhm and operates across the temperature range of -40°C to 165°C. The part maintains Active product status and carries AEC-Q200 qualification, making it suitable for automotive and industrial applications requiring reliable inductance performance. Substitute parts are identified to provide design flexibility when the primary part is unavailable or when alternative sourcing is required.

Substiute Parts

DRA73-151-R

Eaton - Electronics DivisionIn Stock: 2194DRA73-151-R Datasheet

Current PartRFQ

SRR0735A-151M

Bourns Inc.In Stock: 4323SRR0735A-151M Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the DRA73-151-R is determined by strict equivalence across the following critical parameters:

Primary Equivalence Criteria:

• Inductance value: 150 µH (within ±20% tolerance band)
• Inductance tolerance: ±20%
• Shielding: Shielded construction required
• Mounting type: Surface Mount
• Package classification: Nonstandard
• RoHS compliance: ROHS3 Compliant
• AEC-Q200 qualification: Required for automotive applications

Secondary Compatibility Parameters:

• Current rating: Substitute must support minimum 551 mA continuous operation
• DC resistance: Substitute DCR must not exceed 932 mOhm significantly
• Operating temperature range: Substitute must cover at least -40°C to 125°C minimum
• Physical dimensions: Substitute footprint must be compatible with PCB layout constraints

The SRR0735A-151M from Bourns Inc. meets the primary equivalence criteria with matching inductance, tolerance, shielding, surface mount configuration, and AEC-Q200 qualification. Secondary parameter variations exist and are documented in the comparison table below.

Parameter Comparison

Engineering Selection Recommendations

Primary Part Selection (DRA73-151-R): Select the DRA73-151-R when the application requires the full 551 mA continuous current rating and the extended operating temperature range to 165°C. This part is Active status with AEC-Q200 qualification and ROHS3 compliance, suitable for automotive and high-reliability industrial circuits.

Substitute Part Selection (SRR0735A-151M): The SRR0735A-151M from Bourns Inc. is substitutable when application current requirements do not exceed 470 mA continuous operation and the operating temperature range does not exceed 125°C. This part maintains AEC-Q200 qualification and ROHS3 compliance. The physical dimensions are compatible with standard PCB layouts, though the height difference of 0.15 mm requires clearance verification. Both parts share identical inductance, tolerance, shielding, and mounting characteristics.

Compliance Verification: Both parts carry AEC-Q200 automotive qualification and ROHS3 compliance status, confirming suitability for regulated applications. Moisture sensitivity level is 1 (Unlimited) for both parts, indicating no special handling requirements during storage or assembly.

Frequently Asked Questions (FAQ)

Q: Can the SRR0735A-151M replace the DRA73-151-R in all applications?

A: The SRR0735A-151M is substitutable only when the application current does not exceed 470 mA and the operating temperature remains below 125°C. The DRA73-151-R supports higher continuous current (551 mA) and extended temperature operation to 165°C. Verify your circuit requirements before substitution.

Q: What is the difference in physical dimensions between these parts?

A: The DRA73-151-R measures 7.60 x 7.60 mm with a seated height of 3.55 mm. The SRR0735A-151M measures 7.30 x 7.30 mm with a seated height of 3.70 mm. The substitute is slightly smaller in footprint but 0.15 mm taller. Both fit standard nonstandard surface mount packages, but verify PCB clearance for the height difference.

Q: Are both parts qualified for automotive applications?

A: Yes. Both the DRA73-151-R and SRR0735A-151M carry AEC-Q200 qualification, confirming suitability for automotive-grade circuits. Both are ROHS3 compliant and carry Active product status.

Q: What is the significance of the different inductance test frequencies?

A: The DRA73-151-R is tested at 100 kHz while the SRR0735A-151M is tested at 1 kHz. Both parts are specified at 150 µH with ±20% tolerance. The test frequency difference reflects manufacturer characterization methods; the inductance values are equivalent for circuit design purposes at the specified tolerance.

Q: How do the DC resistance values compare?

A: The DRA73-151-R has 932 mOhm DC resistance, while the SRR0735A-151M specifies 930 mOhm maximum. These values are equivalent for practical circuit applications, with negligible difference in power dissipation and thermal performance.

Q: What is the saturation current difference, and does it matter?

A: The DRA73-151-R has a saturation current of 632 mA, while the SRR0735A-151M is rated at 480 mA. If your circuit operates near or above 480 mA, the substitute part may saturate earlier than the primary part. Verify that your peak current requirements do not exceed the substitute's saturation rating.