SMP3316-332M Equivalent & Substitute Parts

Part Overview

The SMP3316-332M is a 33 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 673 units in current inventory. Substitute parts become necessary when primary component availability is limited, when alternative packaging formats are required for manufacturing processes, or when design specifications allow for compatible alternatives with equivalent electrical performance within defined tolerance ranges.

Substiute Parts

SMP3316-332M

Gowanda ElectronicsIn Stock: 750SMP3316-332M Datasheet

Current PartRFQ

SDR1005-330KL

Bourns Inc.In Stock: 8817SDR1005-330KL Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SMP3316-332M is determined by the following critical parameters:

Primary Matching Criteria:

• Inductance value: 33 µH (tolerance range ±20% allows 26.4 µH to 39.6 µH)
• Shielding type: Unshielded
• Mounting type: Surface Mount
• Current rating: Minimum 1.8 A (substitute must support primary circuit requirements)
• DC resistance: Maximum 120 mOhm (acceptable variance from 91.7 mOhm primary specification)
• Operating temperature range: Minimum -40°C ~ 125°C coverage
• Moisture sensitivity: MSL 1 classification

The SDR1005-330KL from Bourns Inc. qualifies as a substitute based on matching inductance value, unshielded configuration, surface mount design, and compatible electrical characteristics within the defined parameter envelope.

Parameter Comparison

Engineering Selection Recommendations

SMP3316-332M (Primary): Suitable for applications requiring the full 2.3 A current rating and lower DC resistance specification. Active product status with established inventory support. Operating temperature range extends to -55°C for low-temperature applications.

SDR1005-330KL (Substitute): Applicable when current requirements do not exceed 1.8 A and the application operates within -40°C to 125°C range. Offers ROHS3 compliance certification. Tighter inductance tolerance (±10%) provides improved value consistency. Smaller physical footprint (0.197" height vs. 0.236") accommodates space-constrained designs. Higher DC resistance (120 mOhm vs. 91.7 mOhm) requires thermal and power dissipation evaluation in the target circuit.

Frequently Asked Questions (FAQ)

Q: Can SDR1005-330KL replace SMP3316-332M in all applications?

A: Substitution is valid only when circuit current requirements do not exceed 1.8 A and operating temperature remains within -40°C to 125°C. Applications requiring the full 2.3 A rating or extended low-temperature operation below -40°C require the primary SMP3316-332M component.

Q: What is the impact of the 28.3 mOhm increase in DC resistance?

A: The SDR1005-330KL exhibits 120 mOhm maximum DC resistance compared to 91.7 mOhm for the SMP3316-332M. This 28.3 mOhm difference increases power dissipation proportionally to current squared. Circuit thermal analysis is required to confirm acceptable performance at the intended operating current.

Q: Are the physical dimensions compatible for PCB layout?

A: The SDR1005-330KL is smaller in all dimensions (0.500" L x 0.394" W x 0.197" H) compared to the SMP3316-332M (0.530" L x 0.420" W x 0.236" H). PCB footprint redesign may be necessary. Verify mechanical clearance and thermal management requirements before implementation.

Q: What compliance differences exist between these components?

A: The SDR1005-330KL carries ROHS3 compliance certification. The SMP3316-332M is marked as "Not applicable" for RoHS status. Both components are REACH Unaffected and classified as EAR99 for export control purposes.

Q: How do inductance tolerances affect circuit performance?

A: The SMP3316-332M specifies ±20% tolerance while the SDR1005-330KL specifies ±10% tolerance. The tighter tolerance of the substitute part reduces inductance value variation, which may improve circuit stability and reduce design margin requirements in frequency-dependent applications.