UP0.4SC-103-R Equivalent & Substitute Parts

Part Overview

The UP0.4SC-103-R is a 10 mH shielded wirewound surface mount inductor manufactured by Eaton - Electronics Division, part of the UNI-PAC™ 0.4SC series. This component is rated for 20 mA maximum current with a maximum DC resistance of 32.8 Ohm and operates across the temperature range of -40°C to 125°C. The part maintains Active product status and is RoHS Compliant with MSL 1 (Unlimited) moisture sensitivity rating.

Substitute components become necessary when the primary part experiences extended lead times, inventory constraints, or when design flexibility permits equivalent electrical and mechanical characteristics. The substitute parts listed below maintain functional equivalence through matching inductance, current rating, DC resistance, and physical dimensions while meeting equivalent compliance standards.

Substiute Parts

UP0.4SC-103-R

Eaton - Electronics DivisionIn Stock: 1023UP0.4SC-103-R Datasheet

Current PartRFQ

SRE6603-103M

Bourns Inc.In Stock: 9460SRE6603-103M Datasheet

SimilarRFQ

SRR6603-103ML

Bourns Inc.In Stock: 12823SRR6603-103ML Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the UP0.4SC-103-R is determined by strict equivalence across the following critical parameters:

Electrical Parameters (Non-negotiable):

• Inductance value: 10 mH (exact match required)
• Current rating: 20 mA minimum (equal or higher acceptable)
• DC resistance: 32.8 Ohm maximum (equal or lower acceptable)
• Tolerance: ±20% (must match)
• Shielding: Shielded configuration (required)
• Q factor @ 100kHz: 50 (indicates comparable performance)

Mechanical Parameters (Non-negotiable):

• Mounting type: Surface Mount (SMD)
• Length: 0.260" (6.60mm)
• Width: 0.175" (4.45mm)
• Height seated maximum: 0.115" (2.92mm) or within acceptable tolerance
• Package type: Nonstandard (consistent across all parts)

Compliance Parameters (Required):

• RoHS compliance status (RoHS Compliant or ROHS3 Compliant acceptable)
• MSL rating: 1 (Unlimited) or equivalent
• Packaging: Tape & Reel (TR)

The two substitute parts listed below satisfy all critical electrical, mechanical, and compliance requirements and are therefore direct functional equivalents for the UP0.4SC-103-R.

Parameter Comparison

Engineering Selection Recommendations

SRE6603-103M (Bourns Inc.):

This substitute maintains full electrical equivalence with the UP0.4SC-103-R across all critical parameters: 10 mH inductance, 20 mA current rating, 32.8 Ohm maximum DC resistance, ±20% tolerance, and 50 Q factor at 100 kHz. Physical dimensions are identical (0.260" L x 0.175" W, 0.115" seated height). The component is ROHS3 Compliant with MSL 1 (Unlimited) rating, meeting all regulatory requirements. The operating temperature range of -25°C to 105°C is narrower than the primary part; selection of this substitute is appropriate for applications operating within this temperature envelope. Self-resonant frequency of 800 kHz provides superior high-frequency performance compared to the primary part's 80 kHz specification.

SRR6603-103ML (Bourns Inc.):

This substitute provides full electrical equivalence with identical inductance, current rating, DC resistance, tolerance, and Q factor specifications. Physical dimensions are nearly identical with length of 0.260" (6.60mm) matching exactly, width of 0.173" (4.40mm) differing by 0.002", and seated height of 0.118" (3.00mm) differing by 0.003" from the primary part. These dimensional variations remain within typical PCB design tolerances for surface mount components. The operating temperature range of -55°C to 125°C exceeds the primary part's range, providing broader environmental coverage. ROHS3 Compliant status and MSL 1 (Unlimited) rating satisfy all compliance requirements. Self-resonant frequency of 800 kHz matches the SRE6603-103M specification.

Both substitute parts are Active status components with established supply availability and are suitable for direct substitution based on electrical and mechanical equivalence.

Frequently Asked Questions (FAQ)

Q: Can SRE6603-103M and SRR6603-103ML be used interchangeably with UP0.4SC-103-R?

A: Both Bourns substitutes meet the critical electrical parameters (10 mH inductance, 20 mA current, 32.8 Ohm DCR, ±20% tolerance) and physical dimensions required for functional equivalence. Selection between them depends on application temperature requirements. SRE6603-103M operates -25°C to 105°C; SRR6603-103ML operates -55°C to 125°C. For applications within the -25°C to 105°C range, either part is acceptable. For applications requiring -40°C operation or below, SRR6603-103ML is required.

Q: What are the dimensional differences between the substitute parts?

A: SRE6603-103M matches the primary part exactly at 0.260" L x 0.175" W x 0.115" H. SRR6603-103ML has width of 0.173" (0.002" narrower) and height of 0.118" (0.003" taller). These variations are within standard PCB design tolerances for surface mount components and do not affect footprint compatibility.

Q: Do the substitute parts have different self-resonant frequencies?

A: Yes. The primary part UP0.4SC-103-R has a self-resonant frequency of 80 kHz. Both substitute parts (SRE6603-103M and SRR6603-103ML) have self-resonant frequencies of 800 kHz. This difference indicates superior high-frequency performance in the substitute parts. For applications operating below 80 kHz, this difference is not significant. For applications approaching or exceeding 80 kHz, the substitute parts provide extended usable frequency range.

Q: Are all three parts RoHS compliant?

A: Yes. The primary part UP0.4SC-103-R is RoHS Compliant. Both substitute parts (SRE6603-103M and SRR6603-103ML) are ROHS3 Compliant. Both compliance levels satisfy RoHS requirements and are acceptable for equivalent substitution.

Q: What is the saturation current specification for the primary part?

A: The saturation current (Isat) specification is not provided for the UP0.4SC-103-R. Both substitute parts specify 17 mA saturation current, which is below the 20 mA rated current. This indicates the substitute parts will exhibit inductance variation at maximum rated current. For applications requiring stable inductance at 20 mA, this characteristic should be evaluated against the primary part's undocumented saturation specification.

Q: Can these parts be stored and handled identically?

A: Yes. All three parts have MSL 1 (Unlimited) moisture sensitivity rating, indicating unlimited shelf life under normal storage conditions without special moisture control requirements. Tape & Reel packaging is identical across all parts.

Q: Which substitute should be selected for new designs?

A: Both substitutes are Active status components suitable for new designs. SRR6603-103ML is recommended for designs requiring the full -55°C to 125°C temperature range or when the extended self-resonant frequency of 800 kHz provides performance benefits. SRE6603-103M is suitable when the -25°C to 105°C temperature range meets application requirements.