SC1608C-470 Equivalent & Substitute Parts

Part Overview

The SC1608C-470 is a 47 µH shielded surface mount inductor manufactured by Signal Transformer, rated for 1.03 A continuous current with a maximum DC resistance of 230 mOhm. This component is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing design support and procurement continuity. The shielded construction and current rating define its primary application constraints.

Substiute Parts

SC1608C-470

Signal TransformerIn Stock: 920SC1608C-470 Datasheet

Current PartRFQ

SC1608F-470

Signal TransformerIn Stock: 1228SC1608F-470 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SC1608C-470 is determined by the following critical parameters:

• Inductance Value: Must be 47 µH (primary functional requirement)
• Current Rating: Substitute must support minimum 1.03 A continuous current
• DC Resistance: Lower DCR values are acceptable; higher values increase power dissipation
• Package Footprint: Physical dimensions must match 0.260" L x 0.175" W (6.60mm x 4.45mm)
• Mounting Type: Surface mount configuration required
• Operating Temperature Range: Must support -40°C ~ 125°C minimum
• Compliance: RoHS3 compliance required

The SC1608F-470 meets the inductance, package, mounting, temperature, and compliance requirements. However, the current rating (560 mA) falls below the original specification (1.03 A), and the DC resistance (750 mOhm Max) is significantly higher than the original (230 mOhm Max). These differences must be evaluated against circuit requirements.

Parameter Comparison

Engineering Selection Recommendations

The SC1608F-470 is an active product from the same manufacturer with identical inductance value and package footprint. Selection of this substitute requires circuit-level evaluation of three factors:

Current Capacity: The SC1608F-470 current rating of 560 mA is 46% lower than the SC1608C-470 specification of 1.03 A. Applications requiring the full 1.03 A rating cannot use this substitute without thermal or reliability risk.

DC Resistance Impact: The SC1608F-470 DCR of 750 mOhm is 3.26 times higher than the original 230 mOhm specification. This increases power dissipation by a factor of approximately 10.6 at rated current, resulting in higher operating temperature and potential efficiency loss.

Shielding Difference: The SC1608C-470 is shielded while the SC1608F-470 is unshielded. In applications sensitive to electromagnetic interference or requiring EMI containment, this difference may affect circuit performance.

Both parts maintain ROHS3 compliance and identical operating temperature range, supporting regulatory and thermal requirements.

Frequently Asked Questions (FAQ)

Q: Can SC1608F-470 directly replace SC1608C-470 in all applications?

A: No. The SC1608F-470 has lower current rating (560 mA vs. 1.03 A) and higher DC resistance (750 mOhm vs. 230 mOhm). Substitution is valid only for circuits operating below 560 mA continuous current and tolerating increased power dissipation.

Q: What is the impact of higher DC resistance on circuit performance?

A: Higher DCR increases resistive losses in the inductor. At 560 mA, the SC1608F-470 dissipates approximately 235 mW compared to 61 mW for the SC1608C-470. This affects efficiency and thermal management.

Q: Does the unshielded design of SC1608F-470 affect compatibility?

A: Unshielded inductors generate stronger external magnetic fields. In noise-sensitive circuits or densely populated PCBs, this may introduce crosstalk or EMI issues not present with the shielded SC1608C-470.

Q: Are both parts physically compatible on the same PCB footprint?

A: Yes. Both parts share identical package dimensions (0.260" L x 0.175" W, 6.60mm x 4.45mm) and height (0.115", 2.92mm), allowing direct PCB footprint compatibility.

Q: What is the tolerance difference between these parts?

A: SC1608C-470 has ±30% tolerance while SC1608F-470 has ±20% tolerance. The tighter tolerance of the substitute may provide better inductance consistency in production.

Q: Are both parts RoHS compliant?

A: Yes. Both SC1608C-470 and SC1608F-470 are ROHS3 compliant and REACH unaffected, meeting current environmental regulations.