SMP3316-222M Equivalent & Substitute Parts

Part Overview

The SMP3316-222M is a 22 µH unshielded molded inductor manufactured by Gowanda Electronics, designed for surface mount applications requiring moderate current handling. This component is rated for 2.9 A continuous current with a maximum DC resistance of 60 mOhm and operates across the temperature range of -55°C to 125°C. The part maintains Active product status with 925 units currently in stock.

Substitute parts are identified when equivalent electrical performance can be achieved within the specified parameter tolerances while maintaining compatibility with surface mount assembly processes and environmental operating conditions.

Substiute Parts

SMP3316-222M

Gowanda ElectronicsIn Stock: 1017SMP3316-222M Datasheet

Current PartRFQ

SDR1005-220ML

Bourns Inc.In Stock: 4260SDR1005-220ML Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SMP3316-222M is determined by the following critical parameters:

Electrical Compatibility Requirements:

• Inductance value of 22 µH within ±20% tolerance
• Current rating minimum of 2.9 A continuous
• Saturation current (Isat) minimum of 3.0 A
• DC resistance not exceeding 60 mOhm maximum
• Unshielded configuration

Environmental & Mechanical Requirements:

• Surface mount packaging
• Operating temperature range encompassing -55°C to 125°C minimum
• Moisture Sensitivity Level 1 or equivalent

The SDR1005-220ML from Bourns Inc. meets the inductance, tolerance, shielding, mounting type, and environmental specifications. However, the current rating of 2.0 A and saturation current of 2.5 A fall below the SMP3316-222M requirements, and the DC resistance of 100 mOhm exceeds the 60 mOhm maximum specification.

Parameter Comparison

Engineering Selection Recommendations

The SDR1005-220ML does not qualify as a direct substitute for the SMP3316-222M based on the provided electrical specifications. The Bourns component exhibits reduced current handling capacity (2.0 A versus 2.9 A), lower saturation current (2.5 A versus 3.0 A), and elevated DC resistance (100 mOhm versus 60 mOhm maximum).

The SMP3316-222M maintains Active product status with established supply availability. The SDR1005-220ML is also Active and ROHS3 compliant, offering regulatory advantage in applications where RoHS compliance is mandated.

Selection between these components must be based on circuit current requirements and thermal dissipation constraints. Applications operating at or near the 2.9 A rating require the SMP3316-222M specification.

Frequently Asked Questions (FAQ)

Q: Can the SDR1005-220ML replace the SMP3316-222M in all applications?

A: No. The SDR1005-220ML has a maximum current rating of 2.0 A, which is insufficient for circuits designed for the SMP3316-222M's 2.9 A rating. Additionally, the higher DC resistance (100 mOhm versus 60 mOhm) results in increased power dissipation.

Q: What is the impact of the 40 mOhm difference in DC resistance?

A: At the SMP3316-222M's rated current of 2.9 A, the additional 40 mOhm resistance in the SDR1005-220ML results in approximately 0.337 W additional power dissipation, affecting thermal performance and efficiency.

Q: Are both parts surface mount compatible?

A: Yes. Both the SMP3316-222M and SDR1005-220ML are surface mount inductors with nonstandard package dimensions. Physical footprint compatibility must be verified against PCB layout requirements.

Q: What is the significance of the operating temperature range difference?

A: The SMP3316-222M operates from -55°C to 125°C, while the SDR1005-220ML operates from -40°C to 125°C. Applications requiring operation below -40°C require the SMP3316-222M.

Q: Does RoHS compliance affect substitution decisions?

A: RoHS compliance is a regulatory consideration. The SDR1005-220ML is ROHS3 compliant, while the SMP3316-222M is not applicable. Regulatory requirements for the end application determine whether this difference is relevant.