SC3316F-221 Equivalent & Substitute Parts

Part Overview

The SC3316F-221 is a 220 µH unshielded wirewound surface mount inductor manufactured by Signal Transformer, rated for 800 mA continuous current with a maximum DC resistance of 610 mOhm. This component is classified as Active and is ROHS3 compliant. Equivalent and substitute parts are identified based on matching electrical specifications including inductance value, current rating, and DC resistance characteristics within acceptable engineering tolerances.

Substiute Parts

SC3316F-221

Signal TransformerIn Stock: 1145SC3316F-221 Datasheet

Current PartRFQ

B82476A1224M000

EPCOS - TDK ElectronicsIn Stock: 2086B82476A1224M000 Datasheet

MFR RecommendedRFQ

B82476B1224M100

EPCOS - TDK ElectronicsIn Stock: 2135B82476B1224M100 Datasheet

MFR RecommendedRFQ

UP2B-221-R

Eaton - Electronics DivisionIn Stock: 1967UP2B-221-R Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SC3316F-221 are qualified based on the following critical parameters:

• Inductance Value: 220 µH (±20% tolerance band)
• Current Rating: Minimum 800 mA continuous current capability
• DC Resistance: Maximum 610 mOhm or lower
• Shielding Configuration: Unshielded
• Mounting Type: Surface Mount
• Test Frequency: 100 kHz inductance measurement standard
• Compliance: ROHS3 compliant, MSL 1 rating

All substitute parts listed maintain these core electrical and mechanical specifications within the defined tolerance band, ensuring functional equivalence in circuit applications.

Parameter Comparison

Engineering Selection Recommendations

All three substitute parts—B82476A1224M000, B82476B1224M100, and UP2B-221-R—maintain Active product status and ROHS3 compliance. The B82476A1224M000 and B82476B1224M100 offer improved DC resistance characteristics (530 mOhm) compared to the SC3316F-221 (610 mOhm), with extended operating temperature ranges to -55°C. The B82476B1224M100 provides the highest current rating at 880 mA. The UP2B-221-R maintains the original operating temperature floor of -40°C and offers a current rating of 773 mA with slightly elevated DC resistance at 671.7 mOhm. Selection should be based on specific circuit requirements for current capacity, thermal performance, and operating environment constraints.

Frequently Asked Questions (FAQ)

Q: What makes these parts electrically equivalent to the SC3316F-221?

A: All substitute parts share the same 220 µH inductance value with ±20% tolerance, unshielded configuration, surface mount packaging, and 100 kHz test frequency. Current ratings and DC resistance values fall within acceptable substitution parameters for this inductor category.

Q: Can B82476B1224M100 be used in place of SC3316F-221 if the circuit requires 800 mA?

A: Yes. The B82476B1224M100 is rated for 880 mA continuous current, which exceeds the 800 mA requirement of the SC3316F-221. The 530 mOhm DC resistance is also lower than the 610 mOhm maximum of the original part.

Q: Are there temperature range limitations when substituting with UP2B-221-R?

A: The UP2B-221-R operates from -40°C to 85°C, which is narrower than the SC3316F-221 range of -40°C to 125°C. Applications requiring operation above 85°C should use B82476A1224M000 or B82476B1224M100, which support -55°C to 150°C.

Q: Does DC resistance affect circuit performance?

A: DC resistance directly impacts power dissipation and voltage drop across the inductor. The B82476 series parts offer lower DCR (530 mOhm) compared to SC3316F-221 (610 mOhm), resulting in reduced losses. The UP2B-221-R has slightly higher DCR at 671.7 mOhm.

Q: Are all substitute parts available in the same package dimensions?

A: All parts are surface mount with nonstandard packages. Physical dimensions vary slightly: SC3316F-221 is 13.45mm × 9.90mm × 5.21mm; B82476 series is 12.95mm × 9.40mm × 5.08mm; UP2B-221-R is 13.97mm × 10.41mm × 6.00mm. PCB layout verification is required for space-constrained applications.

Q: What compliance certifications apply to all parts?

A: All parts are ROHS3 compliant, REACH unaffected, and classified as MSL 1 (Unlimited moisture sensitivity). The B82476B1224M100 carries AEC-Q200 automotive qualification.