UP0.4SC-150-R Equivalent & Substitute Parts

Part Overview

The UP0.4SC-150-R is a 15 µH shielded wirewound inductor manufactured by Eaton - Electronics Division, rated for 800 mA continuous current with a maximum DC resistance of 90 mOhm. This component operates across the temperature range of -40°C to 125°C and is classified as Active product status. The part is packaged in Tape & Reel format with nonstandard surface mount dimensions of 0.260" L x 0.175" W (6.60mm x 4.45mm).

Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained across critical parameters including inductance value, current rating, DC resistance, shielding characteristics, and operating temperature range. Identifying qualified substitutes ensures design flexibility and supply chain continuity.

Key Parameters

Parameter	Value	Unit
Inductance	15	µH
Inductance Tolerance	±20	%
Current Rating	800	mA
DC Resistance (Max)	90	mOhm
Shielding	Shielded	—
Operating Temperature Range	-40 to 125	°C
Mounting Type	Surface Mount	—
RoHS Status	RoHS Compliant	—

Substitute Part Grouping Explanation

Substitution eligibility for the UP0.4SC-150-R is determined by strict equivalence across the following electrical and mechanical parameters:

Electrical Equivalence Criteria:

Inductance value: 15 µH (±20% tolerance band)
Current rating: 800 mA minimum
DC resistance: 90 mOhm maximum
Shielding: Shielded construction required
Self-resonant frequency: 33 MHz
Inductance test frequency: 100 kHz

Mechanical Equivalence Criteria:

Mounting type: Surface Mount
Package classification: Nonstandard
Physical dimensions: Compatible with 0.260" L x 0.175" W footprint tolerance
Height seated: Within 0.115" to 0.118" range

Compliance Criteria:

RoHS compliance status (RoHS Compliant or ROHS3 Compliant acceptable)
Moisture Sensitivity Level: 1 (Unlimited)
Product status: Active

The SRR6603-150ML from Bourns Inc. meets all substitution criteria and is classified as a direct equivalent.

Parameter Comparison

Parameter	UP0.4SC-150-R (Eaton)	SRR6603-150ML (Bourns)	Match Status
Inductance	15 µH	15 µH	Equivalent
Inductance Tolerance	±20%	±20%	Equivalent
Current Rating	800 mA	800 mA	Equivalent
DC Resistance (Max)	90 mOhm	90 mOhm	Equivalent
Shielding	Shielded	Shielded	Equivalent
Q @ Frequency	40 @ 200 kHz	40 @ 100 kHz	Compatible
Self-Resonant Frequency	33 MHz	33 MHz	Equivalent
Operating Temperature Range	-40°C to 125°C	-55°C to 125°C	Equivalent
Inductance Test Frequency	100 kHz	100 kHz	Equivalent
Mounting Type	Surface Mount	Surface Mount	Equivalent
Package / Case	Nonstandard	Nonstandard	Equivalent
Size / Dimension	0.260" L x 0.175" W (6.60mm x 4.45mm)	0.260" L x 0.173" W (6.60mm x 4.40mm)	Compatible
Height - Seated (Max)	0.115" (2.92mm)	0.118" (3.00mm)	Compatible
RoHS Status	RoHS Compliant	ROHS3 Compliant	Equivalent
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	Equivalent

Engineering Selection Recommendations

Primary Part: UP0.4SC-150-R

The UP0.4SC-150-R maintains Active product status with RoHS Compliant certification. Current inventory of 859 pieces supports immediate procurement. This part is the original design specification component.

Substitute Part: SRR6603-150ML

The SRR6603-150ML from Bourns Inc. is qualified as a direct substitute. This component demonstrates:

Identical electrical performance across all critical parameters (inductance, current rating, DC resistance, self-resonant frequency)
ROHS3 Compliant status, meeting current regulatory requirements
Extended operating temperature range (-55°C to 125°C) providing additional thermal margin
Active product status with higher inventory availability (1,340 pieces)
Physical dimensions within acceptable tolerance for PCB layout compatibility
Ferrite drum core construction with equivalent shielding performance

Selection between these parts should be based on supply availability, lead time requirements, and inventory positioning. Both components satisfy the electrical and mechanical requirements for this application category.

Frequently Asked Questions (FAQ)

Q: Can the SRR6603-150ML be used as a direct replacement for the UP0.4SC-150-R?

A: Yes. The SRR6603-150ML meets all electrical equivalence criteria including 15 µH inductance, 800 mA current rating, 90 mOhm maximum DC resistance, and shielded construction. Physical dimensions are compatible within PCB layout tolerances.

Q: What are the key differences between these two inductors?

A: The primary differences are manufacturer (Eaton vs. Bourns), core material construction (wirewound vs. drum core wirewound), and operating temperature range (-40°C to 125°C vs. -55°C to 125°C). Electrical performance remains equivalent across all specified parameters.

Q: Are there any compliance concerns with substitution?

A: No. Both components carry RoHS compliance certifications (RoHS Compliant and ROHS3 Compliant respectively). Both maintain Moisture Sensitivity Level 1 (Unlimited) and identical ECCN and HTSUS classifications.

Q: How do the physical dimensions compare?

A: The UP0.4SC-150-R measures 0.260" L x 0.175" W x 0.115" H (6.60mm x 4.45mm x 2.92mm). The SRR6603-150ML measures 0.260" L x 0.173" W x 0.118" H (6.60mm x 4.40mm x 3.00mm). These dimensions are compatible for standard PCB footprints designed for nonstandard surface mount inductors.

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

A: The SRR6603-150ML specifies a saturation current (Isat) of 310 mA. This parameter was not provided for the UP0.4SC-150-R in the original specifications.

Q: Can these parts be used interchangeably in production?

A: Yes, provided that PCB layout accommodates the minor dimensional variations (width difference of 0.002" and height difference of 0.003"). Both parts are qualified for Tape & Reel packaging and surface mount assembly processes.

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