Equivalent & Substitute Parts for UP0.4C-3R3-R

Part Overview

The UP0.4C-3R3-R is a 3.3 µH unshielded drum core wirewound inductor manufactured by Eaton - Electronics Division, part of the UNI-PAC™ 0.4C series. This surface mount component is rated for 1.89 A continuous current with a maximum DC resistance of 60mOhm and operates across the temperature range of -40°C to 85°C. The component is RoHS compliant and carries an MSL rating of 1 (Unlimited), indicating minimal moisture sensitivity. As an active product with 1156 pieces in stock, equivalent and substitute parts are identified to provide design flexibility, supply chain alternatives, and performance optimization options for applications requiring 3.3 µH inductance in compact surface mount packages.

Substiute Parts

UP0.4C-3R3-R

Eaton - Electronics DivisionIn Stock: 1168UP0.4C-3R3-R Datasheet

Current PartRFQ

B82462A4332M000

EPCOS - TDK ElectronicsIn Stock: 3561B82462A4332M000 Datasheet

SimilarRFQ

P0770.332NLT

Pulse ElectronicsIn Stock: 2616P0770.332NLT Datasheet

SimilarRFQ

SDR0603-3R3ML

Bourns Inc.In Stock: 6606SDR0603-3R3ML Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the UP0.4C-3R3-R is determined by strict adherence to the following electrical and mechanical parameters:

Primary Substitution Criteria:

• Inductance value: 3.3 µH (±20% tolerance maintained across all parts)
• Inductance test frequency: 100 kHz
• Shielding configuration: Unshielded
• Mounting type: Surface Mount
• Packaging: Tape & Reel (TR)
• RoHS compliance status: Active product status required

Secondary Compatibility Parameters:

• Current rating: Minimum 1.89 A (substitute parts rated at 2 A or higher are acceptable)
• DC resistance: Maximum 60mOhm (substitute parts with 60mOhm or lower are acceptable)
• Operating temperature range: Minimum -40°C to 85°C coverage required
• MSL rating: 1 (Unlimited) for all qualified substitutes

All four substitute parts meet these criteria and are classified as direct equivalents or functional substitutes based on matching inductance, tolerance, shielding, and mounting specifications.

Parameter Comparison

Engineering Selection Recommendations

B82462A4332M000 (EPCOS - TDK Electronics): This substitute provides improved current saturation performance at 3.2 A compared to the original 2 A specification, with identical DC resistance of 60mOhm Max. The extended operating temperature range of -55°C to 150°C offers broader thermal coverage. ROHS3 compliance and AEC-Q200 automotive qualification provide enhanced reliability documentation. This part is suitable for applications requiring higher thermal stability or automotive-grade component certification.

P0770.332NLT (Pulse Electronics): This substitute maintains the same physical footprint (0.260" L x 0.175" W) and height (0.115") as the original UP0.4C-3R3-R, ensuring direct mechanical compatibility. The 2 A current rating and 100 kHz test frequency match the original specifications. However, the DC resistance is specified at 80mOhm Max, which exceeds the original 60mOhm specification. This part is suitable for applications where physical dimensions and mounting compatibility are critical, provided the higher DC resistance is acceptable for the circuit design.

SDR0603-3R3ML (Bourns Inc.): This substitute offers the lowest DC resistance at 50mOhm Max and the highest current rating at 2.2 A, providing superior electrical performance margins. The part includes published Q factor (21 @ 7.96MHz) and self-resonant frequency (68MHz) specifications. ROHS3 compliance and REACH unaffected status are confirmed. The physical dimensions differ slightly (0.228" L x 0.228" W, 0.154" height), requiring PCB layout verification. This part is suitable for applications where improved DC resistance performance and higher current capacity are beneficial.

All substitute parts maintain active product status, RoHS compliance, and MSL 1 (Unlimited) moisture sensitivity ratings, ensuring long-term supply chain viability and manufacturing compatibility.

Frequently Asked Questions (FAQ)

Q: Can the B82462A4332M000 be used as a direct replacement for the UP0.4C-3R3-R?

A: Yes. Both parts share identical inductance (3.3 µH), tolerance (±20%), DC resistance (60mOhm Max), shielding (unshielded), and test frequency (100 kHz). The B82462A4332M000 provides higher current saturation (3.2 A vs. 2 A) and extended operating temperature range (-55°C to 150°C vs. -40°C to 85°C). Physical dimensions differ slightly, requiring PCB footprint verification.

Q: What is the primary difference between the P0770.332NLT and the original UP0.4C-3R3-R?

A: The P0770.332NLT has a higher maximum DC resistance specification of 80mOhm compared to the original 60mOhm. All other electrical parameters (inductance, current rating, test frequency) are equivalent. Physical dimensions and height are identical, ensuring direct mechanical compatibility.

Q: Which substitute part offers the best electrical performance?

A: The SDR0603-3R3ML provides the lowest DC resistance (50mOhm Max) and highest current rating (2.2 A), delivering superior electrical performance margins. This part also includes published Q factor and self-resonant frequency data. Physical dimensions differ from the original, requiring PCB layout verification before implementation.

Q: Are all substitute parts RoHS compliant?

A: Yes. The original UP0.4C-3R3-R is RoHS Compliant. All three substitute parts carry ROHS3 Compliant status, which represents an enhanced compliance standard. All parts maintain MSL 1 (Unlimited) moisture sensitivity ratings.

Q: Can I use the SDR0603-3R3ML if my PCB layout is already designed for the UP0.4C-3R3-R?

A: The SDR0603-3R3ML has different physical dimensions (0.228" L x 0.228" W vs. 0.260" L x 0.175" W) and height (0.154" vs. 0.115"). PCB footprint and clearance verification is required before substitution. The P0770.332NLT maintains identical dimensions and is mechanically compatible without layout changes.

Q: What is the significance of the inductance test frequency difference between parts?

A: The UP0.4C-3R3-R, B82462A4332M000, and P0770.332NLT are tested at 100 kHz, while the SDR0603-3R3ML is tested at 1 kHz. Both frequencies are standard for inductor characterization. The 100 kHz test frequency is more representative of switching power supply applications. Inductance values remain equivalent within the ±20% tolerance specification across all parts.

Q: Are there any temperature range limitations when substituting parts?

A: The original UP0.4C-3R3-R operates from -40°C to 85°C. All substitute parts support this range or exceed it. The B82462A4332M000 extends to -55°C to 150°C, the P0770.332NLT to -40°C to 130°C, and the SDR0603-3R3ML to -40°C to 125°C. Verify that the selected substitute meets the specific application temperature requirements.

Q: What inventory levels are available for each part?

A: UP0.4C-3R3-R: 1156 pieces; B82462A4332M000: 3498 pieces; P0770.332NLT: 2528 pieces; SDR0603-3R3ML: 6500 pieces. Higher inventory levels may provide supply chain advantages for high-volume production requirements.