SC3316FH-6R8 Equivalent & Substitute Parts

Part Overview

The SC3316FH-6R8 is a 6.8 µH unshielded wirewound inductor manufactured by Signal Transformer, rated for 4.5 A continuous current with a maximum DC resistance of 22 mOhm. This surface mount component operates across the temperature range of -40°C to 125°C and is ROHS3 compliant with unlimited moisture sensitivity rating (MSL 1). The part is currently in active production status with 734 units available in inventory.

Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained within the specified parameter tolerances for this inductance value and current rating category.

Substiute Parts

SC3316FH-6R8

Signal TransformerIn Stock: 834SC3316FH-6R8 Datasheet

Current PartRFQ

B82476B1682M100

EPCOS - TDK ElectronicsIn Stock: 1219B82476B1682M100 Datasheet

MFR RecommendedRFQ

UP2-6R8-R

Eaton - Electronics DivisionIn Stock: 1622UP2-6R8-R Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SC3316FH-6R8 is determined by the following critical parameters:

• Inductance Value: Must be 6.8 µH within ±20% tolerance
• Current Rating: Must support minimum 4.5 A continuous current
• DC Resistance: Must not exceed 22 mOhm maximum
• Mounting Type: Must be surface mount compatible
• Shielding Configuration: Must be unshielded to maintain equivalent electromagnetic characteristics
• Environmental Compliance: Must maintain ROHS3 compliance and MSL 1 rating
• Inductance Test Frequency: Must be measured at 100 kHz

Two substitute parts meet these criteria: B82476B1682M100 (EPCOS - TDK Electronics) and UP2-6R8-R (Eaton - Electronics Division). Both maintain the specified inductance value, support equal or higher current ratings, and comply with required environmental standards.

Parameter Comparison

Engineering Selection Recommendations

Both substitute parts maintain active production status and full environmental compliance required for the SC3316FH-6R8 application.

B82476B1682M100 provides improved DC resistance performance (21 mOhm vs. 22 mOhm maximum) and extended operating temperature range (-55 to 150°C). This part includes AEC-Q200 automotive qualification. Physical dimensions are slightly smaller in length and width with reduced height (5.08 mm vs. 6.35 mm), which may provide layout advantages in space-constrained applications. The ferrite drum core construction differs from the main part's wirewound design.

UP2-6R8-R from the UNI-PAC™ 2 series supports the highest current rating (5 A) among the three options. DC resistance remains within specification at 23 mOhm maximum. Physical footprint is slightly larger in length (13.74 mm) and height (5.86 mm) compared to the main part. RoHS compliance is confirmed, though operating temperature range is not specified in available documentation.

Selection between substitutes depends on specific application requirements: thermal performance needs, space constraints, and automotive qualification requirements.

Frequently Asked Questions (FAQ)

Q: Can B82476B1682M100 be used as a direct replacement for SC3316FH-6R8?

A: Yes. Both parts maintain 6.8 µH inductance at ±20% tolerance, support the required 4.5 A current rating, and comply with ROHS3 and MSL 1 specifications. The B82476B1682M100 offers superior DC resistance (21 mOhm) and extended temperature range (-55 to 150°C). Physical dimensions differ slightly; verify PCB layout compatibility before implementation.

Q: What is the difference between the wirewound and drum core construction in these inductors?

A: The SC3316FH-6R8 and UP2-6R8-R use wirewound construction, while B82476B1682M100 uses drum core wirewound construction with ferrite material. Both configurations achieve the specified 6.8 µH inductance and current ratings. Drum core designs typically offer improved thermal characteristics and more compact height profiles.

Q: Are there temperature range limitations when substituting UP2-6R8-R?

A: The UP2-6R8-R operating temperature range is not specified in available documentation. If your application requires operation below -40°C or above 125°C, the B82476B1682M100 with its -55 to 150°C range is the appropriate choice.

Q: How do physical dimensions affect PCB layout compatibility?

A: All three parts are surface mount nonstandard packages with similar footprints. The B82476B1682M100 has the smallest height (5.08 mm), while UP2-6R8-R is the longest (13.74 mm). Verify that your PCB design accommodates the specific length, width, and height of the selected substitute before finalizing component procurement.

Q: What does saturation current (Isat) represent in inductor selection?

A: Saturation current indicates the current level at which the inductor's inductance begins to degrade due to core saturation. The SC3316FH-6R8 has Isat of 5 A, B82476B1682M100 has 4.6 A, and UP2-6R8-R has 3.6 A. For applications requiring sustained current near or above these levels, verify that the selected part's Isat rating exceeds your maximum operating current.

Q: Is AEC-Q200 qualification required for my application?

A: AEC-Q200 automotive qualification is provided only by B82476B1682M100. If your application requires automotive-grade components, this substitute is the appropriate selection. For non-automotive applications, all three parts meet standard industrial compliance requirements.