SMP3316-683M Equivalent & Substitute Parts

Part Overview

The SMP3316-683M is a 680 µH unshielded molded inductor manufactured by Gowanda Electronics, designed for surface mount applications requiring moderate current handling up to 550 mA. This component is classified as Active product status with full inventory availability. Substitute parts are identified when original components face supply constraints, obsolescence risks, or when design requirements permit alternative electrical and mechanical parameters within acceptable tolerances.

Substiute Parts

SMP3316-683M

Gowanda ElectronicsIn Stock: 801SMP3316-683M Datasheet

Current PartRFQ

SDR1005-681KL

Bourns Inc.In Stock: 12238SDR1005-681KL Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

The SDR1005-681KL qualifies as a substitute based on the following critical parameters:

Matching Parameters:

• Inductance value: 680 µH (identical)
• Shielding type: Unshielded (identical)
• Mounting type: Surface Mount (identical)
• Moisture Sensitivity Level: 1 (Unlimited) (identical)
• Package type: Nonstandard (identical)
• Operating temperature range: -40°C ~ 125°C (overlaps with -55°C ~ 125°C)

Acceptable Variance Parameters:

• Current Rating: 350 mA (SDR1005-681KL) vs. 550 mA (SMP3316-683M) — substitute rated lower; acceptable for applications not requiring full current capacity
• DC Resistance: 2.6 Ohm Max (SDR1005-681KL) vs. 1.71 Ohm Max (SMP3316-683M) — substitute has higher DCR; acceptable for applications tolerant of increased power dissipation
• Inductance Tolerance: ±10% (SDR1005-681KL) vs. ±20% (SMP3316-683M) — substitute offers tighter tolerance
• Physical dimensions: 0.500" L x 0.394" W x 0.197" H (12.70mm x 10.00mm x 5.00mm) — slightly smaller footprint

Substitution is valid when circuit design permits reduced current handling and increased DC resistance without performance degradation.

Parameter Comparison

Engineering Selection Recommendations

Both the SMP3316-683M and SDR1005-681KL maintain Active product status with established supply chains. The SDR1005-681KL offers ROHS3 compliance, providing regulatory advantage for applications subject to RoHS requirements. Selection between these components depends on circuit-level current demands and thermal dissipation tolerance. The SMP3316-683M supports higher current operation (550 mA vs. 350 mA) with lower DC resistance (1.71 Ohm vs. 2.6 Ohm), making it suitable for high-current applications. The SDR1005-681KL provides a compact alternative with superior inductance tolerance (±10% vs. ±20%) for applications where current requirements do not exceed 350 mA and where reduced component height (5.00mm vs. 6.00mm) provides board layout advantages.

Frequently Asked Questions (FAQ)

Q: Can SDR1005-681KL replace SMP3316-683M in all applications?

A: Substitution is valid only when circuit current requirements do not exceed 350 mA and when increased DC resistance (2.6 Ohm vs. 1.71 Ohm) does not cause unacceptable power dissipation or voltage drop. Verify saturation current requirements; SDR1005-681KL saturates at 400 mA versus 500 mA for SMP3316-683M.

Q: What are the physical compatibility considerations?

A: Both components use nonstandard packages and surface mount mounting. SDR1005-681KL has a smaller footprint (12.70mm x 10.00mm x 5.00mm) compared to SMP3316-683M (13.46mm x 10.67mm x 6.00mm). Verify PCB layout accommodates the substitute dimensions; the reduced height may require design verification for clearance and thermal management.

Q: How do inductance tolerances affect circuit performance?

A: SMP3316-683M specifies ±20% tolerance while SDR1005-681KL specifies ±10%. For applications requiring tighter inductance control, SDR1005-681KL provides superior tolerance. For applications designed around ±20% tolerance, both components are equivalent.

Q: Are there temperature range limitations for substitution?

A: SMP3316-683M operates -55°C ~ 125°C; SDR1005-681KL operates -40°C ~ 125°C. Substitution is not valid for applications requiring operation below -40°C.

Q: What compliance differences exist between these components?

A: SDR1005-681KL is ROHS3 compliant; SMP3316-683M is not applicable for RoHS. For applications subject to RoHS regulations, SDR1005-681KL is the compliant choice.