UP5-331-R Equivalent & Substitute Parts Reference

Part Overview

The UP5-331-R is a 330 µH unshielded wirewound surface mount inductor manufactured by Eaton Electronics Division, part of the UNI-PAC™ 5 series. This component is rated for 1 A continuous current with a maximum DC resistance of 560 mOhm and operates across the temperature range of -25°C to 105°C. The part is currently active in production and RoHS compliant.

Equivalent and substitute parts are identified when components share identical or compatible electrical specifications, mechanical dimensions, and environmental ratings. This reference provides engineering-level substitution data for procurement, design validation, and supply chain continuity.

Substiute Parts

UP5-331-R

Eaton - Electronics DivisionIn Stock: 719UP5-331-R Datasheet

Current PartRFQ

74458233

Würth ElektronikIn Stock: 141674458233 Datasheet

DirectRFQ

P0250.334NLT

Pulse ElectronicsIn Stock: 4564P0250.334NLT Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the UP5-331-R are qualified based on the following electrical and mechanical compatibility criteria:

Electrical Parameters (Must Match or Exceed):

• Inductance: 330 µH nominal
• Current Rating: 1 A minimum
• DC Resistance: 560 mOhm maximum
• Current Saturation (Isat): 1.9 A minimum
• Inductance Tolerance: ±20% or tighter
• Shielding: Unshielded
• Type: Wirewound

Mechanical Parameters (Must Be Compatible):

• Mounting Type: Surface Mount
• Package / Case: Nonstandard (equivalent footprint)
• Physical Dimensions: Within ±5% of original (18.40mm L × 15.00mm W × 7.50mm H max)
• Packaging Format: Tape & Reel (TR)

Environmental & Compliance Parameters:

• Operating Temperature Range: Must cover or exceed -25°C to 105°C
• Moisture Sensitivity Level: MSL 1 or equivalent
• RoHS Compliance: Required

The two substitute parts identified below meet all mandatory electrical specifications and are mechanically compatible with the UP5-331-R within acceptable engineering tolerances.

Parameter Comparison

Engineering Selection Recommendations

UP5-331-R (Eaton Electronics Division)

Primary specification. Operating temperature range -25°C to 105°C. RoHS compliant. Active product status with 709 units in stock. Suitable for applications requiring the specified temperature floor of -25°C.

74458233 (Würth Elektronik WE-PD4 Series)

Direct electrical equivalent with extended operating temperature range (-40°C to 125°C). ROHS3 compliant. Ferrite core material specified. Physical dimensions within 1.2% of original (18.50mm L × 15.20mm W × 7.10mm H). Frequency self-resonant at 2.8 MHz. Higher inventory availability (1308 units). Suitable for applications requiring lower operating temperature floor or higher temperature ceiling.

P0250.334NLT (Pulse Electronics P0250NL Series)

Direct electrical equivalent with tighter inductance tolerance (±15% vs ±20%). Extended operating temperature range (-40°C to 130°C). ROHS3 compliant. Physical dimensions within 1.3% of original (18.62mm L × 15.14mm W × 7.36mm H). Highest inventory availability (4543 units). Suitable for applications requiring tighter inductance tolerance or extended high-temperature operation to 130°C.

All three parts are active products with RoHS compliance and MSL 1 rating. Selection between substitutes depends on specific application temperature requirements and tolerance specifications.

Frequently Asked Questions (FAQ)

Q: Can the 74458233 (Würth Elektronik) be used as a direct replacement for the UP5-331-R?

A: Yes. The 74458233 meets all electrical specifications: 330 µH inductance, 1 A current rating, 560 mOhm maximum DCR, and 1.9 A saturation current. Physical dimensions are within 1.2% of the original part. The extended operating temperature range (-40°C to 125°C) covers the original specification (-25°C to 105°C). Both parts are unshielded wirewound inductors with identical test frequency (100 kHz) and MSL 1 rating.

Q: What is the difference between the P0250.334NLT and the UP5-331-R?

A: The P0250.334NLT has a tighter inductance tolerance (±15% vs ±20%) and an extended operating temperature range (-40°C to 130°C vs -25°C to 105°C). Physical dimensions are within 1.3% of the original. All other electrical parameters are identical: 330 µH, 1 A, 560 mOhm DCR, 1.9 A Isat. Both are unshielded wirewound surface mount inductors tested at 100 kHz.

Q: Are the physical dimensions of substitute parts compatible with the original PCB layout?

A: Yes. All substitute parts have physical dimensions within 1.3% of the original UP5-331-R (18.40mm L × 15.00mm W × 7.50mm H max). The 74458233 measures 18.50mm × 15.20mm × 7.10mm, and the P0250.334NLT measures 18.62mm × 15.14mm × 7.36mm. These variations are within standard PCB design tolerances for nonstandard package inductors.

Q: Which substitute part has the best inventory availability?

A: The P0250.334NLT (Pulse Electronics) has the highest inventory with 4,543 units in stock, compared to 1,308 units for the 74458233 (Würth Elektronik) and 709 units for the original UP5-331-R (Eaton).

Q: Do all parts meet RoHS compliance requirements?

A: Yes. The UP5-331-R is RoHS compliant. Both substitute parts (74458233 and P0250.334NLT) are ROHS3 compliant, which represents the current RoHS standard. All three parts meet RoHS requirements.

Q: What is the significance of the ±15% tolerance on the P0250.334NLT compared to ±20% on the UP5-331-R?

A: The P0250.334NLT has a tighter inductance tolerance specification, meaning the actual inductance value will be closer to the nominal 330 µH. For applications requiring precise inductance values, the ±15% tolerance provides better performance consistency. The ±20% tolerance on the UP5-331-R is acceptable for general-purpose filtering and energy storage applications.

Q: Can these parts be used interchangeably in high-temperature applications?

A: The 74458233 and P0250.334NLT both support extended high-temperature operation (125°C and 130°C respectively) compared to the UP5-331-R (105°C). For applications operating above 105°C, use either substitute part. The P0250.334NLT supports the highest temperature ceiling at 130°C.

Q: What is the Moisture Sensitivity Level (MSL) rating, and why is it important?

A: All three parts have MSL 1 (Unlimited), which means they have unlimited shelf life and do not require special moisture control during storage or handling. This is the least restrictive MSL rating and simplifies supply chain management.

Q: Are there any differences in the core material between these parts?

A: The UP5-331-R and P0250.334NLT do not specify core material in the provided data. The 74458233 specifies a ferrite core. All three are unshielded wirewound inductors with identical electrical performance at the test frequency of 100 kHz.