Equivalent & Substitute Parts for UP2C-331-R

Part Overview

The UP2C-331-R is a 330 µH unshielded drum core wirewound inductor manufactured by Eaton - Electronics Division, part of the UNI-PAC™ 2C series. This surface mount component is rated for 670 mA continuous current with a DC resistance of 824.3 mOhm and operates across the temperature range of -40°C to 85°C. The part is RoHS compliant and currently active in production with 657 pieces in stock.

Substitute components are necessary when the primary part becomes unavailable, when supply chain constraints require alternative sourcing, or when design flexibility permits selection from multiple qualified manufacturers while maintaining electrical and mechanical compatibility.

Substiute Parts

UP2C-331-R

Eaton - Electronics DivisionIn Stock: 688UP2C-331-R Datasheet

Current PartRFQ

P0752.334NLT

Pulse ElectronicsIn Stock: 6340P0752.334NLT Datasheet

DirectRFQ

SDR1005-331KL

Bourns Inc.In Stock: 1498SDR1005-331KL Datasheet

DirectRFQ

B82476B1334M100

EPCOS - TDK ElectronicsIn Stock: 2018B82476B1334M100 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the UP2C-331-R is determined by the following critical parameters:

Primary Matching Criteria:

• Inductance value: 330 µH (fixed requirement)
• Inductance tolerance: ±20% or better
• Core configuration: Unshielded wirewound or drum core wirewound
• Mounting type: Surface mount
• Package classification: Nonstandard (consistent footprint family)

Secondary Compatibility Criteria:

• Current rating: Minimum 550 mA (allows operation within design margins)
• DC resistance: Maximum 1.15 Ohm (thermal and efficiency considerations)
• Operating temperature: Minimum -40°C to 85°C overlap required
• Compliance: RoHS3 compliant or better

All three substitute parts meet the primary matching criteria. Variations in current saturation ratings, DC resistance values, and extended temperature ranges represent design trade-offs that do not prevent functional substitution when the application permits.

Parameter Comparison

Engineering Selection Recommendations

P0752.334NLT (Pulse Electronics): This direct substitute maintains the 330 µH inductance and ±20% tolerance specification. The 600 mA current rating represents a 10.4% reduction from the primary part. DC resistance increases to 1.02 Ohm maximum, a 23.8% increase. Extended operating temperature to 130°C provides additional thermal margin. ROHS3 compliance and MSL 1 rating match primary part requirements. Suitable for applications where the 600 mA rating satisfies design requirements.

SDR1005-331KL (Bourns Inc.): This substitute offers improved inductance tolerance at ±10%, superior to the primary part's ±20%. Current rating of 550 mA represents the lowest among substitutes. DC resistance maximum of 1.15 Ohm is the highest. Ferrite drum core construction matches the primary part. Operating temperature extends to 125°C. ROHS3 compliance and MSL 1 rating are equivalent. Suitable for applications prioritizing inductance accuracy over current capacity.

B82476B1334M100 (EPCOS - TDK Electronics): This substitute maintains ferrite drum core construction identical to the primary part. Current rating of 650 mA closely matches the primary specification at 97% of the original rating. DC resistance of 810 mOhm maximum is the lowest among substitutes, providing superior thermal performance. Extended operating temperature range to 150°C and AEC-Q200 automotive qualification provide additional design flexibility. ROHS3 compliance and MSL 1 rating are equivalent. Suitable for applications requiring automotive-grade reliability and thermal optimization.

Frequently Asked Questions (FAQ)

Q: Can P0752.334NLT replace UP2C-331-R in all applications?

A: P0752.334NLT is a direct electrical substitute for inductance and tolerance specifications. The 600 mA current rating is 10.4% lower than the primary part. Substitution is valid only when the application current requirement does not exceed 600 mA continuous operation. DC resistance increases from 824.3 mOhm to 1.02 Ohm maximum, resulting in approximately 23.8% higher power dissipation at rated current.

Q: What are the physical dimension differences between substitute parts?

A: All substitute parts maintain nonstandard package classification consistent with the primary part. Length and width dimensions are equivalent within manufacturing tolerance (12.90-12.95 mm length, 9.40-10.00 mm width). Height variations range from 5.00 mm to 5.46 mm maximum seated height. These dimensional differences are within typical PCB layout tolerances for surface mount assembly.

Q: Which substitute part offers the best thermal performance?

A: B82476B1334M100 provides the lowest DC resistance at 810 mOhm maximum, compared to 824.3 mOhm for the primary part and higher values for other substitutes. Lower DC resistance directly reduces I²R power dissipation. At 650 mA operation, B82476B1334M100 dissipates approximately 0.343 watts compared to 0.369 watts for the primary part, representing 7.0% lower thermal load.

Q: Are all substitute parts RoHS compliant?

A: Yes. The primary part UP2C-331-R carries RoHS Compliant status. All three substitute parts carry ROHS3 Compliant status, which represents an enhanced compliance level. All parts maintain MSL 1 (Unlimited) moisture sensitivity rating, indicating no special moisture control requirements during storage or handling.

Q: What is the inductance tolerance impact when substituting SDR1005-331KL?

A: SDR1005-331KL specifies ±10% inductance tolerance compared to ±20% for the primary part. This represents a 50% tighter tolerance band. At 330 µH nominal, the primary part tolerance range is 264-396 µH, while SDR1005-331KL range is 297-363 µH. The narrower tolerance provides improved circuit performance in applications sensitive to inductance variation.

Q: Can substitute parts operate at the primary part's maximum temperature of 85°C?

A: Yes. All substitute parts specify minimum operating temperatures of -40°C and maximum temperatures of 85°C or higher. P0752.334NLT extends to 130°C, SDR1005-331KL to 125°C, and B82476B1334M100 to 150°C. All substitutes are fully rated for the primary part's operating range of -40°C to 85°C.

Q: Which substitute part is recommended for automotive applications?

A: B82476B1334M100 carries AEC-Q200 automotive qualification, indicating compliance with automotive reliability and environmental stress testing standards. This part is suitable for automotive-grade applications requiring documented reliability certification. The other substitute parts do not carry automotive qualification markings.