SD7030-331-R Equivalent & Substitute Parts

Part Overview

The SD7030-331-R is a fixed shielded drum core wirewound inductor manufactured by Eaton - Electronics Division. This component is rated for 317 µH inductance with a maximum current rating of 380 mA and a DC resistance of 1.725 Ohm. The part is classified as Active product status and is RoHS Compliant with unlimited moisture sensitivity level (MSL 1). Surface mount packaging in nonstandard dimensions (7.00mm x 7.00mm x 3.00mm) makes this inductor suitable for compact circuit board applications requiring ferrite core shielding. Equivalent parts are identified when electrical parameters and mechanical compatibility align within acceptable engineering tolerances for the intended application.

Substiute Parts

SD7030-331-R

Eaton - Electronics DivisionIn Stock: 843SD7030-331-R Datasheet

Current PartRFQ

PA4301.334NLT

Pulse ElectronicsIn Stock: 1344PA4301.334NLT Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SD7030-331-R are identified based on the following critical parameters:

Electrical Compatibility Criteria:

• Inductance value within acceptable tolerance range (317 µH ±30% = 222.0 µH to 412.0 µH)
• Current rating sufficient for application requirements (minimum 380 mA)
• DC resistance comparable to original specification (1.725 Ohm Max)
• Ferrite core material with shielding configuration
• Operating temperature range covering -40°C to 125°C

Mechanical Compatibility Criteria:

• Surface mount package type
• Nonstandard case dimensions compatible with 7.00mm x 7.00mm footprint
• Height seated maximum of 3.00mm
• Tape & Reel packaging format

Compliance Criteria:

• RoHS compliance status (RoHS Compliant or ROHS3 Compliant acceptable)
• MSL rating of 1 (Unlimited)
• Active product status

The PA4301.334NLT from Pulse Electronics meets these substitution criteria with inductance of 330 µH (within tolerance range), current rating of 285 mA, and comparable DC resistance of 1.7 Ohm Max.

Parameter Comparison

Engineering Selection Recommendations

Primary Consideration - Current Rating: The PA4301.334NLT substitute part carries a current rating of 285 mA, which is lower than the SD7030-331-R specification of 380 mA. Selection of this substitute is contingent upon the actual circuit current requirements. If the application operates at or above 285 mA, the substitute part may not provide adequate current handling capacity.

Inductance Value: The substitute inductance of 330 µH represents a 4.1% increase from the original 317 µH specification. This variation falls within the ±30% tolerance band of the original part and is acceptable for most filter and energy storage applications where inductance tolerance is not critical.

Compliance and Availability: Both parts maintain Active product status with full RoHS compliance. The PA4301.334NLT offers higher inventory availability (1310 Pcs) compared to the SD7030-331-R (759 Pcs), supporting supply chain continuity.

Mechanical Compatibility: Footprint dimensions differ marginally (7.20mm x 7.20mm versus 7.00mm x 7.00mm). Both parts maintain identical 3.00mm seated height. PCB layout verification is recommended to confirm the 0.20mm dimensional increase does not conflict with adjacent component placement.

Saturation Current: The original part specifies saturation current (Isat) of 300 mA. The substitute part does not provide this parameter in the available data. Circuit design verification is necessary if saturation characteristics are critical to application performance.

Frequently Asked Questions (FAQ)

Q: Can PA4301.334NLT directly replace SD7030-331-R in all applications?

A: Direct replacement depends on circuit current requirements. The substitute part is rated for 285 mA maximum current, compared to 380 mA for the original. If your circuit operates below 285 mA, the substitute is compatible. If circuit current exceeds 285 mA, the substitute part may not meet performance requirements.

Q: What is the inductance difference between these parts, and does it matter?

A: The PA4301.334NLT provides 330 µH versus 317 µH in the original part, a difference of 13 µH or 4.1%. This falls within the ±30% tolerance specification of the SD7030-331-R and is acceptable for applications where inductance tolerance is not tightly controlled. For precision filter or resonant circuit applications, verify that the 4.1% variation does not affect circuit performance.

Q: Are the physical dimensions compatible?

A: Both parts are surface mount components with identical 3.00mm seated height. The PA4301.334NLT footprint is 7.20mm x 7.20mm compared to 7.00mm x 7.00mm for the original. This 0.20mm increase in length and width is minimal but should be verified against PCB layout constraints to ensure no interference with adjacent components.

Q: What is the difference in DC resistance between these parts?

A: DC resistance is effectively equivalent: 1.725 Ohm Max (SD7030-331-R) versus 1.7 Ohm Max (PA4301.334NLT). This negligible difference has no practical impact on circuit performance.

Q: Do both parts have the same temperature operating range?

A: Yes. Both the SD7030-331-R and PA4301.334NLT operate across -40°C to 125°C, ensuring thermal compatibility across standard industrial and commercial temperature ranges.

Q: What is the significance of the inductance test frequency difference?

A: The SD7030-331-R inductance is tested at 100 kHz, while the PA4301.334NLT is tested at 1 kHz. Inductance values can vary with frequency due to core material properties. The 330 µH specification for the substitute part is measured at a lower frequency, which may result in slightly different inductance behavior at higher operating frequencies. Frequency-dependent circuit performance should be evaluated if the application operates significantly above 1 kHz.

Q: Are both parts RoHS compliant?

A: Yes. The SD7030-331-R is RoHS Compliant, and the PA4301.334NLT is ROHS3 Compliant. Both meet current RoHS requirements for lead-free and restricted substance compliance.

Q: What does MSL 1 (Unlimited) mean for these components?

A: MSL 1 (Moisture Sensitivity Level 1) with Unlimited rating indicates these components have minimal moisture sensitivity and do not require special moisture control during storage, handling, or assembly. Standard PCB assembly processes are suitable without additional moisture precautions.