Equivalent & Substitute Parts for UP0.4SC-470-R

Part Overview

The UP0.4SC-470-R is a 47 µH shielded wirewound inductor manufactured by Eaton - Electronics Division, rated for 500 mA continuous current with a maximum DC resistance of 230 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 and is RoHS compliant.

Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained within the specified parameter tolerances for surface mount inductor applications.

Key Parameters

Parameter	Value	Unit
Inductance	47	µH
Inductance Tolerance	±20%	%
Current Rating	500	mA
DC Resistance (Max)	230	mOhm
Shielding	Shielded	—
Q Factor @ 100 kHz	40	—
Self Resonant Frequency	20	MHz
Mounting Type	Surface Mount	—
Operating Temperature Range	-40 to 125	°C
Package Type	Nonstandard	—
Physical Dimensions (L × W)	6.60 × 4.45	mm
Height (Seated Max)	2.92	mm
RoHS Status	RoHS Compliant	—
MSL Rating	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitute parts for the UP0.4SC-470-R are qualified based on the following electrical and mechanical criteria:

Primary Substitution Criteria:

Inductance value: 47 µH (within ±20% tolerance specification)
Current rating: minimum 500 mA
DC resistance: maximum 230 mOhm
Shielding: Shielded construction required
Q factor @ 100 kHz: 40 or equivalent
Self resonant frequency: 20 MHz or higher
Surface mount package type
Operating temperature range: minimum -40°C to 125°C coverage
Physical footprint compatibility: 6.60 mm length, 4.45 mm width, 2.92 mm height (seated)

Substitute Part Identified:

SRR6603-470ML (Bourns Inc.) meets all primary substitution criteria with identical inductance (47 µH), current rating (500 mA), and DC resistance (230 mOhm). This part is a direct functional equivalent with ferrite drum core construction, maintains the same electrical performance specifications, and operates across an extended temperature range (-55°C to 125°C). Physical dimensions are compatible within manufacturing tolerances.

Secondary Substitute (Different Inductance Value):

SRR6603-330ML (Bourns Inc.) is listed as an alternative for applications where 33 µH inductance is acceptable. This part provides higher current capacity (600 mA) and lower DC resistance (190 mOhm), with identical shielding and frequency characteristics. Selection of this part requires confirmation that the 33 µH inductance value meets circuit requirements.

Parameter Comparison

Parameter	UP0.4SC-470-R (Eaton)	SRR6603-470ML (Bourns)	SRR6603-330ML (Bourns)
Inductance	47 µH	47 µH	33 µH
Inductance Tolerance	±20%	±20%	±20%
Current Rating	500 mA	500 mA	600 mA
DC Resistance (Max)	230 mOhm	230 mOhm	190 mOhm
Shielding	Shielded	Shielded	Shielded
Q @ 100 kHz	40	40	40
Self Resonant Frequency	20 MHz	20 MHz	20 MHz
Operating Temperature Range	-40 to 125°C	-55 to 125°C	-55 to 125°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Physical Dimensions (L × W)	6.60 × 4.45 mm	6.60 × 4.40 mm	6.60 × 4.40 mm
Height (Seated Max)	2.92 mm	3.00 mm	3.00 mm
RoHS Status	RoHS Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL Rating	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
ECCN	EAR99	EAR99	EAR99
HTSUS Code	8504.50.4000	8504.50.4000	8504.50.4000

Engineering Selection Recommendations

Direct Equivalent Selection:

SRR6603-470ML is the primary substitute for UP0.4SC-470-R. Both parts deliver identical electrical specifications: 47 µH inductance, 500 mA current rating, and 230 mOhm maximum DC resistance. The SRR6603-470ML maintains equivalent Q factor (40 @ 100 kHz) and self resonant frequency (20 MHz). Physical footprint compatibility is confirmed within standard manufacturing tolerances. The Bourns part carries ROHS3 compliance, exceeding the RoHS compliance of the original part. Extended operating temperature range (-55°C to 125°C) provides additional thermal margin compared to the Eaton part (-40°C to 125°C).

Alternative Selection Considerations:

SRR6603-330ML may be selected only when circuit design permits 33 µH inductance operation. This part offers performance advantages including higher current capacity (600 mA) and lower DC resistance (190 mOhm), but the different inductance value requires circuit validation. Selection of this part is not recommended as a direct substitute without circuit analysis confirming inductance value compatibility.

Compliance and Regulatory Status:

All identified substitute parts maintain EAR99 export classification and 8504.50.4000 HTSUS coding consistent with the original part. MSL rating of 1 (Unlimited) is maintained across all options, eliminating moisture sensitivity constraints during storage and handling.

Frequently Asked Questions (FAQ)

Q: Can SRR6603-470ML be used as a direct replacement for UP0.4SC-470-R?

A: Yes. SRR6603-470ML meets all electrical and mechanical specifications of UP0.4SC-470-R. Inductance (47 µH), current rating (500 mA), DC resistance (230 mOhm), shielding, Q factor, and self resonant frequency are identical. Physical dimensions are compatible within standard manufacturing tolerances. The part is qualified for direct substitution in surface mount applications.

Q: What is the difference between the Eaton UP0.4SC-470-R and Bourns SRR6603-470ML?

A: Both parts are functionally equivalent with identical inductance and current ratings. The primary differences are: (1) core material construction (Eaton uses standard wirewound; Bourns uses ferrite drum core), (2) operating temperature range (Eaton: -40 to 125°C; Bourns: -55 to 125°C), (3) RoHS compliance level (Eaton: RoHS; Bourns: ROHS3), and (4) physical height when seated (Eaton: 2.92 mm; Bourns: 3.00 mm). These differences do not affect electrical performance or circuit compatibility.

Q: When should SRR6603-330ML be selected instead of the 47 µH alternatives?

A: SRR6603-330ML should be selected only when circuit design specifications explicitly require 33 µH inductance. This part is not a direct substitute for the 47 µH UP0.4SC-470-R. The different inductance value will alter circuit behavior and must be validated through circuit analysis before implementation.

Q: Are there any package or footprint compatibility issues between these parts?

A: Physical dimensions are compatible within standard manufacturing tolerances. Length is identical at 6.60 mm. Width differs by 0.05 mm (Eaton: 4.45 mm; Bourns: 4.40 mm), which is within typical PCB pad tolerance. Height when seated differs by 0.08 mm (Eaton: 2.92 mm; Bourns: 3.00 mm). These variations do not create assembly or clearance issues in standard surface mount applications.

Q: What compliance certifications apply to these substitute parts?

A: UP0.4SC-470-R carries RoHS compliance. SRR6603-470ML and SRR6603-330ML carry ROHS3 compliance, which represents a higher compliance standard. All parts are classified as EAR99 for export purposes and share the same HTSUS code (8504.50.4000). MSL rating of 1 (Unlimited) applies to all parts, eliminating moisture sensitivity constraints.

Q: Do these parts have different saturation current specifications?

A: The Eaton UP0.4SC-470-R does not specify saturation current (Isat). The Bourns SRR6603-470ML specifies Isat at 240 mA, and SRR6603-330ML also specifies Isat at 240 mA. For the 47 µH parts operating at 500 mA rated current, saturation current specification does not affect substitution compatibility.

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