UP4B-220-R Equivalent & Substitute Parts

Part Overview

The UP4B-220-R is a 22 µH unshielded drum core wirewound inductor manufactured by Eaton - Electronics Division. This surface mount component is rated for 4.5 A continuous current with a maximum DC resistance of 34 mOhm and operates across the temperature range of -40°C to 85°C. The part is classified as Active product status and is RoHS Compliant, making it suitable for modern electronic applications requiring fixed inductance in compact form factors.

Substitute parts are identified when equivalent electrical and mechanical parameters align within acceptable tolerances, allowing for component interchangeability in circuit designs where the primary inductance value and current handling capability remain the critical performance factors.

Key Parameters

Parameter	Value	Unit
Inductance	22	µH
Current Rating	4.5	A
DC Resistance (Max)	34	mOhm
Saturation Current	7.6	A
Core Material	Ferrite	—
Shielding	Unshielded	—
Mounting Type	Surface Mount	—
Operating Temperature Range	-40 to 85	°C
Inductance Tolerance	±20	%

Substitute Part Grouping Explanation

Substitution eligibility for the UP4B-220-R is determined by the following critical parameters:

Primary Criteria (Must Match):

Inductance value: 22 µH
Core type: Ferrite drum core, wirewound
Shielding configuration: Unshielded
Mounting type: Surface Mount
Package classification: Nonstandard

Secondary Criteria (Acceptable Variance):

Current rating: Substitute must support minimum 4.0 A continuous operation
DC resistance: Substitute DCR must not exceed 40 mOhm maximum
Saturation current: Substitute Isat must be ≥6.5 A
Operating temperature: Substitute range must encompass -40°C minimum
RoHS compliance: Substitute must maintain RoHS or ROHS3 compliance status

The SDR2207-220YL from Bourns Inc. meets all primary and secondary criteria, establishing it as a direct functional equivalent within the specified parameter boundaries.

Parameter Comparison

Parameter	UP4B-220-R (Eaton)	SDR2207-220YL (Bourns)	Compatibility Status
Inductance	22 µH	22 µH	Matched
Inductance Tolerance	±20%	±15%	Substitute tighter
Current Rating	4.5 A	4.0 A	Substitute lower by 0.5 A
Saturation Current (Isat)	7.6 A	6.5 A	Substitute lower by 1.1 A
DC Resistance (Max)	34 mOhm	39.4 mOhm	Substitute higher by 5.4 mOhm
Core Material	Ferrite	Ferrite	Matched
Shielding	Unshielded	Unshielded	Matched
Operating Temperature Range	-40 to 85°C	-40 to 125°C	Substitute extended upper range
Mounting Type	Surface Mount	Surface Mount	Matched
Package / Case	Nonstandard	Nonstandard	Matched
Physical Dimensions (L x W)	22.10 x 15.00 mm	22.00 x 15.00 mm	Equivalent footprint
Height (Max)	7.87 mm	7.80 mm	Equivalent height
RoHS Status	RoHS Compliant	ROHS3 Compliant	Both compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	Matched

Engineering Selection Recommendations

Primary Part Selection (UP4B-220-R): The UP4B-220-R remains the preferred selection when the application requires the full 4.5 A continuous current rating and lower DC resistance specification of 34 mOhm maximum. This part is Active status with RoHS Compliance certification and maintains adequate inventory availability.

Substitute Part Selection (SDR2207-220YL): The SDR2207-220YL from Bourns Inc. is suitable for applications where the continuous current requirement does not exceed 4.0 A and where the increased DC resistance of 39.4 mOhm maximum is acceptable within circuit design margins. This substitute offers ROHS3 Compliance and an extended operating temperature range to 125°C, providing additional thermal headroom in high-temperature environments. Physical footprint and height dimensions are equivalent, ensuring PCB layout compatibility.

Compliance Considerations: Both parts maintain regulatory compliance with RoHS standards. The SDR2207-220YL carries REACH Unaffected status, providing additional supply chain documentation for regulated markets.

Frequently Asked Questions (FAQ)

Q: Can the SDR2207-220YL directly replace the UP4B-220-R in all applications?

A: Direct replacement is valid only when the application current requirement does not exceed 4.0 A continuous operation. The UP4B-220-R supports 4.5 A; the SDR2207-220YL supports 4.0 A. If the circuit design operates at currents between 4.0 A and 4.5 A, the substitute part is not appropriate.

Q: What is the impact of the higher DC resistance in the SDR2207-220YL?

A: The SDR2207-220YL exhibits 39.4 mOhm maximum DC resistance compared to 34 mOhm maximum in the UP4B-220-R. This 5.4 mOhm difference results in increased resistive losses and heat generation proportional to the square of the operating current. Circuit designers must verify that thermal and efficiency specifications remain within acceptable limits at the intended operating current.

Q: Are the physical dimensions interchangeable?

A: Yes. Both parts feature equivalent surface mount footprints and heights. The UP4B-220-R measures 22.10 x 15.00 x 7.87 mm (L x W x H), while the SDR2207-220YL measures 22.00 x 15.00 x 7.80 mm. These dimensions are functionally equivalent for PCB placement and do not require layout modifications.

Q: What is the difference in inductance tolerance between these parts?

A: The UP4B-220-R carries ±20% inductance tolerance, while the SDR2207-220YL carries ±15% tolerance. The substitute part offers tighter tolerance control, which may be beneficial in applications sensitive to inductance variation but does not restrict substitution eligibility.

Q: Does the extended temperature range of the SDR2207-220YL affect substitution decisions?

A: The SDR2207-220YL operates to 125°C maximum, compared to 85°C for the UP4B-220-R. This extended range does not restrict substitution but provides additional thermal margin in high-temperature applications. Both parts maintain the same -40°C minimum operating temperature.

Q: Are both parts available in Tape & Reel packaging?

A: Yes. Both the UP4B-220-R and SDR2207-220YL are supplied in Tape & Reel (TR) packaging, suitable for automated assembly processes.

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