UP2T-821-R Equivalent & Substitute Parts Reference

Part Overview

The UP2T-821-R is a 820 µH unshielded wirewound inductor manufactured by Eaton - Electronics Division, designed for through-hole mounting in radial, vertical cylinder configuration. This component is classified as obsolete, necessitating identification of equivalent substitute parts for ongoing design support and procurement continuity. The part operates at 100 kHz inductance test frequency with ±20% tolerance and is currently available in inventory (959 pcs new original stock).

Substiute Parts

UP2T-821-R

Eaton - Electronics DivisionIn Stock: 1009UP2T-821-R Datasheet

Current PartRFQ

1140-821K-RC

Bourns Inc.In Stock: 10761140-821K-RC Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the UP2T-821-R is determined by the following critical parameters:

Primary Matching Criteria:

• Inductance value: 820 µH (exact match required)
• Mounting type: Through hole radial configuration
• Package style: Vertical cylinder form factor
• Shielding classification: Unshielded

Secondary Compatibility Factors:

• Tolerance specification (±20% for main part; ±10% for substitute provides tighter tolerance)
• Physical dimensions must accommodate PCB layout constraints
• Current rating and saturation characteristics for circuit load requirements
• DC resistance impact on circuit performance

The substitute part 1140-821K-RC from Bourns Inc. satisfies the primary matching criteria with identical inductance value and through-hole radial mounting configuration. The substitute provides enhanced electrical specifications including defined current rating (4.2 A), saturation current (7.2 A), and DC resistance (154 mOhm Max), along with active product status and RoHS3 compliance.

Parameter Comparison

Engineering Selection Recommendations

Product Status Consideration: The UP2T-821-R is classified as obsolete. The 1140-821K-RC substitute maintains active product status with Bourns Inc., ensuring long-term availability and continued manufacturing support.

Compliance & Certification: The 1140-821K-RC is RoHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic component procurement. Both parts carry EAR99 ECCN classification.

Physical Integration: The substitute part exhibits larger physical dimensions (1.500" diameter vs. 0.433" diameter; 1.030" height vs. 0.390" height). PCB layout verification is required to confirm accommodation of increased footprint in existing designs.

Electrical Performance: The substitute provides specified electrical parameters (current rating, saturation current, DC resistance) not available for the original part. These specifications enable precise circuit analysis and thermal management calculations.

Frequently Asked Questions (FAQ)

Q: Can the 1140-821K-RC directly replace the UP2T-821-R in existing designs?

A: Both parts share identical inductance value (820 µH), unshielded configuration, and through-hole radial mounting. However, the substitute exhibits significantly larger physical dimensions. Direct replacement requires PCB layout verification to confirm the increased footprint (1.500" diameter and 1.030" height) fits within available space constraints.

Q: What is the tolerance difference between these parts?

A: The UP2T-821-R specifies ±20% tolerance, while the 1140-821K-RC provides ±10% tolerance. The substitute offers tighter inductance tolerance, which may improve circuit performance in applications sensitive to inductance variation.

Q: Are there current rating limitations with the substitute?

A: The 1140-821K-RC is rated for 4.2 A continuous current with 7.2 A saturation current. The original UP2T-821-R does not specify current ratings. Circuit design must confirm that operating current remains within the 4.2 A continuous rating to prevent inductor saturation and performance degradation.

Q: What is the DC resistance impact?

A: The 1140-821K-RC specifies 154 mOhm maximum DC resistance. The original part does not provide this specification. DC resistance contributes to circuit losses and heat generation. Design analysis should account for this resistance value in power budget calculations.

Q: Are both parts suitable for high-temperature applications?

A: The 1140-821K-RC operates across -55°C to 105°C temperature range. The UP2T-821-R does not specify operating temperature limits. For applications requiring defined temperature performance, the substitute provides explicit thermal operating range.

Q: What packaging formats are available?

A: The UP2T-821-R is supplied in standard packaging format. The 1140-821K-RC is available in bulk packaging. Procurement quantities and packaging requirements should be confirmed with supplier documentation.