SMP5022-102M Equivalent & Substitute Parts

Part Overview

The SMP5022-102M is a 10 µH unshielded molded inductor manufactured by Gowanda Electronics, designed for surface mount applications requiring moderate current handling. This component is classified as Active product status with 898 units currently in stock. Alternative components may be required due to supply constraints, design optimization, or specific application requirements where substitute inductors meet or exceed the electrical and mechanical specifications of the original part.

Key Parameters

Parameter	Value
Inductance	10 µH
Inductance Tolerance	±20%
Current Rating	4.3 A
Current - Saturation (Isat)	12 A
DC Resistance (DCR)	31 mOhm Max
Core Material	Ferrite
Shielding	Unshielded
Operating Temperature Range	-55°C ~ 125°C
Mounting Type	Surface Mount
Package Type	Nonstandard
Size (L x W)	19.04 mm x 15.74 mm
Height - Seated (Max)	7.11 mm
Inductance Frequency - Test	100 kHz

Substitute Part Grouping Explanation

Substitution eligibility for the SMP5022-102M is determined by the following critical parameters:

Inductance Value: Must be 10 µH with ±20% tolerance
Current Rating: Substitute must support minimum 4.3 A continuous current
DC Resistance: Lower or equal DCR values are acceptable; higher values may impact thermal performance
Core Material: Ferrite core construction maintains electromagnetic characteristics
Shielding Configuration: Unshielded topology must be preserved for EMI profile compatibility
Operating Temperature: Minimum range of -40°C ~ 125°C is acceptable; extended lower temperature range (-55°C) is preferred but not mandatory
Mounting Type: Surface mount configuration required
Package Footprint: Physical dimensions must accommodate PCB layout constraints

The SDR1806-100ML from Bourns Inc. qualifies as a substitute based on matching inductance, core material, shielding type, and surface mount configuration, with superior current rating and lower DCR characteristics.

Parameter Comparison

Parameter	SMP5022-102M (Gowanda)	SDR1806-100ML (Bourns)	Compatibility
Inductance	10 µH	10 µH	Match
Inductance Tolerance	±20%	±20%	Match
Current Rating (Amps)	4.3 A	5.3 A	Substitute exceeds requirement
Current - Saturation (Isat)	12 A	10 A	Substitute within acceptable range
DC Resistance (DCR)	31 mOhm Max	25 mOhm Max	Substitute superior
Core Material	Ferrite	Ferrite	Match
Shielding	Unshielded	Unshielded	Match
Operating Temperature Range	-55°C ~ 125°C	-40°C ~ 125°C	Substitute narrower lower limit
Mounting Type	Surface Mount	Surface Mount	Match
Size (L x W)	19.04 mm x 15.74 mm	18.30 mm x 14.00 mm	Substitute smaller footprint
Height - Seated (Max)	7.11 mm	6.90 mm	Substitute lower profile
Inductance Frequency - Test	100 kHz	100 kHz	Match

Engineering Selection Recommendations

The SDR1806-100ML is a qualified substitute for the SMP5022-102M based on electrical parameter alignment and product status. Both components are Active products with current manufacturing support. The Bourns SDR1806-100ML demonstrates superior electrical performance with higher current rating (5.3 A vs. 4.3 A) and lower DC resistance (25 mOhm vs. 31 mOhm), resulting in reduced thermal dissipation and improved efficiency in power conversion applications.

The SDR1806-100ML carries ROHS3 compliance certification, whereas the SMP5022-102M is not applicable for RoHS classification. Both components are REACH Unaffected and classified under EAR99 export control. The substitute component features a smaller physical footprint (18.30 mm x 14.00 mm vs. 19.04 mm x 15.74 mm) and lower seated height (6.90 mm vs. 7.11 mm), offering potential PCB layout advantages.

The operating temperature range of the SDR1806-100ML (-40°C ~ 125°C) is narrower at the lower limit compared to the SMP5022-102M (-55°C ~ 125°C). Applications requiring operation below -40°C must retain the original Gowanda component.

Frequently Asked Questions (FAQ)

Q: Can the SDR1806-100ML replace the SMP5022-102M in all applications?

A: The SDR1806-100ML is electrically compatible for applications operating within the -40°C ~ 125°C temperature range. Applications requiring operation below -40°C must use the SMP5022-102M. PCB layout verification is required due to the smaller footprint of the substitute component.

Q: What is the significance of the lower DC resistance in the SDR1806-100ML?

A: The 25 mOhm maximum DCR of the SDR1806-100ML compared to 31 mOhm of the SMP5022-102M results in lower resistive losses and reduced heat generation during operation, improving overall circuit efficiency.

Q: Are both components suitable for high-frequency applications?

A: Both components are tested at 100 kHz inductance frequency. The SDR1806-100ML provides additional frequency characterization data (Q @ 2.52 MHz and self-resonant frequency of 25 MHz), which may be relevant for applications operating at higher frequencies.

Q: What are the packaging and supply considerations?

A: Both components are supplied in Tape & Reel (TR) packaging for automated assembly. The SMP5022-102M has 898 units in stock, while the SDR1806-100ML has 1351 units available, providing greater supply availability.

Q: Does the smaller size of the SDR1806-100ML affect electrical performance?

A: The reduced physical dimensions do not compromise the electrical specifications. The substitute component maintains the same inductance value, tolerance, and core material while delivering superior current handling and lower resistance characteristics.

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