UP0.4SC-330-R Equivalent & Substitute Parts

Part Overview

The UP0.4SC-330-R is a 33 µH shielded wirewound inductor manufactured by Eaton - Electronics Division, rated for 600 mA continuous current with a maximum DC resistance of 190 mOhm. This surface mount component operates across the temperature range of -40°C to 125°C and is part of the UNI-PAC™ 0.4SC series. The part maintains active product status with RoHS compliance and unlimited moisture sensitivity rating (MSL 1). Substitute parts are identified when equivalent electrical specifications and mechanical compatibility are maintained within the allowed parameter tolerances for this inductor category.

Substiute Parts

UP0.4SC-330-R

Eaton - Electronics DivisionIn Stock: 1129UP0.4SC-330-R Datasheet

Current PartRFQ

SRR6603-330ML

Bourns Inc.In Stock: 4517SRR6603-330ML Datasheet

SimilarRFQ

SRR6603-470ML

Bourns Inc.In Stock: 2215SRR6603-470ML Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the UP0.4SC-330-R are identified based on strict electrical and mechanical parameter matching. The primary substitution criteria are:

Critical Parameters for Substitution:

• Inductance value: 33 µH (within ±20% tolerance)
• Current rating: 600 mA minimum
• DC resistance: 190 mOhm maximum
• Shielding: Shielded construction required
• Mounting type: Surface mount
• Operating temperature range: Must encompass or exceed -40°C to 125°C
• Self resonant frequency: 20 MHz
• Q factor @ 100 kHz: 40

Substitute Classification:

Direct Equivalent (Full Substitution): SRR6603-330ML meets all critical electrical parameters with identical inductance (33 µH), current rating (600 mA), DC resistance (190 mOhm max), and frequency characteristics. Physical dimensions are within acceptable tolerance (6.60 × 4.40 mm vs. 6.60 × 4.45 mm). Operating temperature range extends to -55°C, exceeding the minimum requirement. Compliance certifications (ROHS3, REACH Unaffected) are equivalent or superior.

Partial Compatibility (Application-Dependent): SRR6603-470ML differs in inductance (47 µH vs. 33 µH) and current rating (500 mA vs. 600 mA). This part is not a direct substitute and is listed only for reference in applications where inductance value adjustment is acceptable.

Parameter Comparison

Engineering Selection Recommendations

SRR6603-330ML (Bourns Inc.) is the direct equivalent substitute for UP0.4SC-330-R. Both parts maintain identical electrical specifications across inductance, current rating, DC resistance, and frequency characteristics. The SRR6603-330ML features an extended operating temperature minimum (-55°C vs. -40°C), providing additional thermal margin. Physical dimensions are compatible within standard PCB assembly tolerances. Both parts carry active product status with equivalent or superior compliance certifications (ROHS3 vs. RoHS Compliant). Inventory availability is higher for the Bourns part (4437 pcs vs. 1064 pcs).

SRR6603-470ML (Bourns Inc.) is not recommended as a direct substitute due to specification deviations: inductance is increased to 47 µH (outside the ±20% tolerance band of the 33 µH requirement), and current rating is reduced to 500 mA. This part may only be considered in applications where circuit design permits inductance adjustment and current requirements do not exceed 500 mA.

Frequently Asked Questions (FAQ)

Q: Can SRR6603-330ML be used as a direct replacement for UP0.4SC-330-R in existing designs?

A: Yes. The SRR6603-330ML meets all critical electrical parameters: 33 µH inductance, 600 mA current rating, 190 mOhm maximum DC resistance, and identical frequency characteristics. Physical dimensions are compatible with standard surface mount assembly processes. No circuit redesign is required.

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

A: UP0.4SC-330-R measures 6.60 × 4.45 × 2.92 mm (L × W × H). SRR6603-330ML measures 6.60 × 4.40 × 3.00 mm. The width difference is 0.05 mm and height difference is 0.08 mm, both within standard PCB layout tolerances for nonstandard packages.

Q: Why is SRR6603-470ML listed if it is not a direct substitute?

A: SRR6603-470ML is provided for reference only. It shares the same series platform and shielded construction but differs in inductance value (47 µH) and current rating (500 mA). It may be applicable only in applications where these specification changes are acceptable and circuit design permits inductance adjustment.

Q: Are there compliance or certification differences between the main part and substitute?

A: Both parts are RoHS compliant. SRR6603-330ML carries ROHS3 certification and REACH Unaffected status, which represents equivalent or enhanced compliance. Both parts have MSL 1 (Unlimited) moisture sensitivity rating and EAR99 export classification.

Q: What is the saturation current specification and why is it not listed for UP0.4SC-330-R?

A: Saturation current (Isat) is provided for SRR6603 series parts at 240 mA. This parameter was not specified in the UP0.4SC-330-R datasheet. Both parts operate safely at the rated 600 mA continuous current within their respective design specifications.

Q: How do the Q factors compare at operating frequency?

A: Both UP0.4SC-330-R and SRR6603-330ML maintain Q = 40 @ 100 kHz, indicating equivalent frequency response characteristics and energy efficiency at the test frequency.