UP4B-6R8-R Equivalent & Substitute Parts

Part Overview

The UP4B-6R8-R is a 6.8 µH unshielded drum core wirewound inductor manufactured by Eaton - Electronics Division. This surface mount component is rated for 8.3 A continuous current with a maximum DC resistance of 10 mOhm and operates across the temperature range of -40°C to 85°C. The part is RoHS compliant and classified as Active product status with unlimited moisture sensitivity rating (MSL 1).

Substitute parts are identified when equivalent electrical and mechanical parameters are available from alternative manufacturers, enabling procurement flexibility while maintaining circuit performance specifications.

Substiute Parts

UP4B-6R8-R

Eaton - Electronics DivisionIn Stock: 1273UP4B-6R8-R Datasheet

Current PartRFQ

SDR2207-6R8ML

Bourns Inc.In Stock: 1695SDR2207-6R8ML Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the UP4B-6R8-R is determined by the following critical parameters:

Electrical Parameters:

• Inductance value: 6.8 µH (±20% tolerance)
• Core material: Ferrite
• Core type: Drum core, wirewound
• Shielding configuration: Unshielded
• Inductance test frequency: 100 kHz

Mechanical Parameters:

• Mounting type: Surface mount
• Package type: Nonstandard
• Physical dimensions: Approximately 22 mm L × 15 mm W × 7.8-7.9 mm H
• Packaging format: Tape & Reel (TR)

Operational Parameters:

• Operating temperature range: -40°C minimum
• RoHS compliance status
• Moisture sensitivity level: 1 (Unlimited)

The substitute part SDR2207-6R8ML meets the core electrical and mechanical requirements for equivalent circuit functionality. Variations in current rating, DC resistance, and maximum operating temperature are documented in the parameter comparison table below.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection (UP4B-6R8-R): Select the Eaton UP4B-6R8-R when circuit design requires the higher current rating of 8.3 A continuous or saturation current of 14.1 A, and when the lower DC resistance specification of 10 mOhm maximum is critical for minimizing power dissipation. This part is suitable for applications operating within the -40°C to 85°C temperature range.

Substitute Selection (SDR2207-6R8ML): The Bourns SDR2207-6R8ML is suitable as a substitute when the application current requirements do not exceed 7.5 A continuous or 12 A saturation, and when the higher DC resistance of 14.2 mOhm maximum is acceptable. This part offers extended operating temperature capability to 125°C, providing thermal margin for applications requiring higher temperature operation. Both parts maintain identical inductance value, tolerance, core material, shielding configuration, and mounting type.

Compliance Considerations: Both parts are RoHS compliant and carry MSL 1 (Unlimited) moisture sensitivity rating, enabling equivalent handling and storage protocols. The Bourns part specifies ROHS3 compliance, indicating adherence to the most current RoHS directive revision.

Physical Compatibility: Dimensional differences between the two parts are negligible (0.1 mm length difference, 0.07 mm height difference), ensuring equivalent PCB footprint compatibility and assembly process compatibility.

Frequently Asked Questions (FAQ)

Q: Can the SDR2207-6R8ML directly replace the UP4B-6R8-R in all applications?

A: Direct substitution is possible only when the application current requirements do not exceed 7.5 A continuous and 12 A saturation. If the circuit design relies on the higher current ratings or lower DC resistance of the Eaton part, substitution is not appropriate. Verify circuit current specifications before substitution.

Q: What is the impact of the 4.2 mOhm difference in DC resistance?

A: The SDR2207-6R8ML exhibits 42% higher DC resistance (14.2 mOhm vs. 10 mOhm). In applications where the inductor carries significant current, this increases power dissipation and heat generation. Calculate power loss using P = I²R to determine if the higher resistance is acceptable for your thermal budget.

Q: Are the physical dimensions compatible with existing PCB layouts?

A: Yes. The dimensional differences are 0.1 mm in length and 0.07 mm in height, which are within typical PCB manufacturing tolerances and do not require layout modifications. Both parts use identical mounting type (surface mount) and packaging format (Tape & Reel).

Q: What is the advantage of the Bourns part's extended temperature range?

A: The SDR2207-6R8ML operates to 125°C maximum, compared to 85°C for the Eaton part. This extended range provides thermal margin in applications subject to elevated ambient temperatures or self-heating effects, but does not affect electrical performance at standard operating temperatures.

Q: Are both parts actively manufactured?

A: Yes. Both the UP4B-6R8-R and SDR2207-6R8ML carry Active product status, indicating current production and availability from their respective manufacturers.

Q: Do both parts require identical handling and storage procedures?

A: Yes. Both parts carry MSL 1 (Unlimited) moisture sensitivity rating, requiring identical moisture control protocols during storage, handling, and assembly. No additional precautions are necessary when substituting between these parts.

Q: What compliance certifications apply to both parts?

A: Both parts are RoHS compliant. The Eaton part is designated RoHS Compliant, while the Bourns part specifies ROHS3 Compliant, indicating adherence to the current RoHS directive revision. Both parts carry ECCN EAR99 and HTSUS 8504.50.4000 classifications.