1537-56F

Fixed Inductors Overview

The Delevan 1537-56F is a molded, unshielded RF inductor with axial leads designed for PCB mounting. It features a nominal inductance of 39 µH with a tight tolerance of ±1%. The component has a maximum DC resistance of 2.6 ohms and supports a maximum DC current of 198 mA. Key electrical characteristics include a minimum Q factor of 60 at the test frequency and a self-resonant frequency of 14.5 MHz. The physical dimensions are 9.53 mm in length and 3.96 mm in diameter.

Fixed Inductors Feature Summary

• Molded construction provides mechanical stability for through-hole applications
• Unshielded design allows for flexible circuit layout without magnetic interference constraints
• Axial lead termination facilitates standard PCB mounting techniques

Fixed Inductors Applications

• RF signal filtering circuits
• Impedance matching networks
• General purpose RF coil applications

Fixed Inductors Procurement Notes

Verify RoHS compliance status as documentation indicates non-compliance. Confirm axial lead configuration matches assembly requirements. Ensure operating temperature range fits within -55°C to 125°C limits. Validate that 198 mA current rating meets circuit demands. Check specific datasheet revisions for dimensional accuracy.

Fixed Inductors Selection Notes

Select this component when a 39 µH inductance with high precision is required. The unshielded nature suits layouts where magnetic coupling is not critical. Consider the 2.6 ohm DC resistance impact on power loss. The axial form factor is suitable for manual or standard automated insertion processes.

Fixed Inductors Part Context

This part belongs to the Delevan 1537/R series of molded RF coils. The series offers various inductance values with different tolerance suffixes. The 'F' suffix denotes a 1% tolerance, distinguishing it from other variants like the 56J (5% tolerance). These components are manufactured by API Delevan.

Fixed Inductors Replacement Considerations

The 1537-56J is a direct alternative with identical electrical specifications but a wider 5% tolerance. Verify if the looser tolerance meets design margins. No other shielded or surface-mount equivalents share these exact parameters.