UP0.4C-4R7-R Equivalent & Substitute Parts

Part Overview

The UP0.4C-4R7-R is a 4.7 µH unshielded drum core wirewound inductor manufactured by Eaton - Electronics Division. This surface mount component is rated for 1.55 A continuous current with a maximum DC resistance of 88 mOhm and operates across the temperature range of -40°C to 85°C. The part is RoHS compliant and classified as Moisture Sensitivity Level 1 (unlimited). As an active product with 700 pieces in stock, substitute parts may be required for design flexibility, supply chain optimization, or when specific performance parameters necessitate alternative component selection.

Key Parameters

Parameter	Value
Inductance	4.7 µH
Tolerance	±20%
Current Rating (Amps)	1.55 A
Current - Saturation (Isat)	1.61 A
DC Resistance (DCR)	88 mOhm Max
Shielding	Unshielded
Operating Temperature	-40°C ~ 85°C
Mounting Type	Surface Mount
RoHS Status	RoHS Compliant
Inductance Frequency - Test	100 kHz

Substitute Part Grouping Explanation

Substitute parts for the UP0.4C-4R7-R are classified based on electrical and mechanical compatibility. The primary substitution criteria are:

Electrical Parameters:

Inductance value: 4.7 µH (fixed requirement)
Tolerance: ±20% (fixed requirement)
Current rating: minimum 1.55 A
DC resistance: maximum 88 mOhm preferred, with tolerance for minor variations
Saturation current: minimum 1.61 A

Mechanical Parameters:

Mounting type: Surface Mount (required)
Shielding: Unshielded (required)
Package type: Nonstandard (required)
Physical dimensions: 0.260" L x 0.175" W (6.60mm x 4.45mm) preferred for footprint compatibility

Environmental & Compliance:

Operating temperature range: minimum -40°C to 85°C
RoHS compliance: required
Moisture Sensitivity Level: 1 (Unlimited)

Substitute parts are grouped into two categories: Direct Substitutes (P0770.472NLT, SDR6603-4R7M) meet all primary electrical and mechanical requirements with minimal design impact. Similar Substitutes (B82462A4472M000, SDR0603-4R7ML) meet core electrical specifications but may require design verification for dimensional or thermal performance differences.

Parameter Comparison

Parameter	UP0.4C-4R7-R (Eaton)	P0770.472NLT (Pulse)	SDR6603-4R7M (Bourns)	B82462A4472M000 (EPCOS)	SDR0603-4R7ML (Bourns)
Inductance	4.7 µH	4.7 µH	4.7 µH	4.7 µH	4.7 µH
Tolerance	±20%	±20%	±20%	±20%	±20%
Current Rating (Amps)	1.55 A	1.5 A	1.5 A	1.65 A	1.8 A
Current - Saturation (Isat)	1.61 A	1.5 A	1.5 A	2.8 A	2.2 A
DC Resistance (DCR)	88 mOhm Max	90 mOhm Max	90 mOhm Max	80 mOhm Max	70 mOhm Max
Shielding	Unshielded	Unshielded	Unshielded	Unshielded	Unshielded
Operating Temperature	-40°C ~ 85°C	-40°C ~ 130°C	-40°C ~ 125°C	-55°C ~ 150°C	-40°C ~ 125°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
RoHS Status	RoHS Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Inductance Frequency - Test	100 kHz	100 kHz	100 kHz	100 kHz	1 kHz
Size / Dimension	0.260" L x 0.175" W (6.60mm x 4.45mm)	0.260" L x 0.175" W (6.60mm x 4.45mm)	0.260" L x 0.175" W (6.60mm x 4.45mm)	0.236" L x 0.236" W (6.00mm x 6.00mm)	0.228" L x 0.228" W (5.80mm x 5.80mm)
Height - Seated (Max)	0.115" (2.92mm)	0.115" (2.92mm)	0.115" (2.92mm)	0.118" (3.00mm)	0.154" (3.90mm)

Engineering Selection Recommendations

Direct Substitutes:

The P0770.472NLT (Pulse Electronics) and SDR6603-4R7M (Bourns Inc.) are direct substitutes for the UP0.4C-4R7-R. Both parts maintain identical inductance values, tolerance specifications, and physical footprints (0.260" L x 0.175" W, 0.115" height). The P0770.472NLT offers extended operating temperature range (-40°C to 130°C) compared to the original part, while the SDR6603-4R7M provides documented Q factor (17 @ 7.96MHz) and self-resonant frequency (50MHz). Both are ROHS3 compliant and carry Moisture Sensitivity Level 1 rating. Current ratings of 1.5 A are marginally lower than the original 1.55 A specification; however, saturation current values remain within acceptable operating margins for most applications.

Similar Substitutes:

The B82462A4472M000 (EPCOS - TDK Electronics) and SDR0603-4R7ML (Bourns Inc.) are similar substitutes with enhanced electrical performance characteristics. The B82462A4472M000 features superior current rating (1.65 A) and lower DC resistance (80 mOhm), with extended temperature range (-55°C to 150°C) and AEC-Q200 automotive qualification. Physical dimensions differ slightly (0.236" L x 0.236" W, 0.118" height), requiring PCB layout verification. The SDR0603-4R7ML offers the highest current rating (1.8 A) and lowest DC resistance (70 mOhm) among all substitutes, with documented Q factor (20 @ 7.96MHz) and self-resonant frequency (56MHz). However, its larger height (0.154") and different footprint (0.228" L x 0.228" W, 5.80mm x 5.80mm) necessitate design review for space-constrained applications.

All substitute parts maintain RoHS compliance and Moisture Sensitivity Level 1 classification, ensuring compatibility with standard manufacturing and storage protocols.

Frequently Asked Questions (FAQ)

Q: Can P0770.472NLT directly replace UP0.4C-4R7-R without PCB modifications?

A: Yes. The P0770.472NLT maintains identical physical footprint (0.260" L x 0.175" W) and height (0.115"), allowing direct PCB placement without layout changes. Electrical parameters (4.7 µH inductance, ±20% tolerance, unshielded configuration) are equivalent. The 1.5 A current rating is marginally lower than the original 1.55 A; verify application current requirements before selection.

Q: What are the key differences between direct and similar substitutes?

A: Direct substitutes (P0770.472NLT, SDR6603-4R7M) maintain identical physical dimensions and current ratings within 0.05 A of the original part. Similar substitutes (B82462A4472M000, SDR0603-4R7ML) offer enhanced electrical performance (higher current ratings, lower DC resistance) but require PCB layout verification due to dimensional variations. The B82462A4472M000 uses a 6.00mm x 6.00mm footprint; the SDR0603-4R7ML uses a 5.80mm x 5.80mm footprint with increased height (0.154").

Q: Are all substitute parts RoHS compliant?

A: Yes. All substitute parts carry ROHS3 compliance certification, meeting current regulatory requirements. The original UP0.4C-4R7-R is RoHS Compliant; all substitutes exceed this standard with ROHS3 designation.

Q: Which substitute offers the best thermal performance?

A: The B82462A4472M000 provides the widest operating temperature range (-55°C to 150°C) and includes AEC-Q200 automotive qualification. The SDR6603-4R7M and SDR0603-4R7ML both support -40°C to 125°C operation. The P0770.472NLT extends to -40°C to 130°C. Application thermal requirements determine the optimal selection.

Q: Can SDR0603-4R7ML be used in space-constrained designs?

A: The SDR0603-4R7ML has a smaller footprint (5.80mm x 5.80mm) than the original part (6.60mm x 4.45mm), but its height (0.154") exceeds the original (0.115") by 0.039". Verify vertical clearance availability before selection. Its superior electrical performance (1.8 A rating, 70 mOhm DCR) may justify layout modifications in current-limited applications.

Q: What is the significance of Q factor and self-resonant frequency data?

A: Q factor (quality factor) and self-resonant frequency indicate inductor performance at specific frequencies. The SDR6603-4R7M (Q=17 @ 7.96MHz, SRF=50MHz) and SDR0603-4R7ML (Q=20 @ 7.96MHz, SRF=56MHz) provide documented frequency response characteristics. These parameters are critical for high-frequency applications; applications operating below 1 MHz typically do not require this data for substitution decisions.

Q: Are all parts available in Tape & Reel packaging?

A: Yes. All listed parts (UP0.4C-4R7-R, P0770.472NLT, SDR6603-4R7M, B82462A4472M000, SDR0603-4R7ML) are supplied in Tape & Reel (TR) packaging, suitable for automated assembly processes.

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