1537R-70G

Overview

The Delevan 1537R-70G is a fixed axial leaded RF inductor featuring an unshielded molded coil construction. It provides an inductance of 75 µH with a tolerance of ±2%. The component exhibits a maximum DC resistance of 3.7 Ohms and supports a maximum current rating of 166 mA. Key electrical characteristics include a minimum quality factor (Q) of 55 and a self-resonant frequency of 10.5 MHz. It utilizes standard termination methods for through-hole mounting.

Feature Summary

• Unshielded molded coil design suitable for general RF applications
• Axial leaded termination for standard through-hole PCB mounting
• High Q factor performance at the specified operating frequency

Applications

• RF circuit filtering
• Impedance matching networks
• Tuned oscillator circuits

Procurement Notes

Verify the specific suffix designation against official API Delevan documentation to confirm exact tolerance and parameter values, as suffixes define critical electrical specifications. Ensure the procurement source provides authentic manufacturer datasheets rather than generic distributor summaries. Cross-reference the part number with the latest RoHS compliance status directly from the manufacturer's official records to ensure regulatory adherence for the intended market.

Selection Notes

Select this component when a 75 µH inductance value is required with tight ±2% tolerance constraints. Consider the 166 mA current limit and 3.7 Ohm DC resistance for power handling requirements. The unshielded design necessitates careful layout planning to minimize electromagnetic interference with adjacent sensitive components. Verify that the 10.5 MHz self-resonant frequency aligns with the target operational bandwidth of the application.

Part Context

The 1537R series represents a line of fixed RF inductors manufactured by API Delevan Inc. These components are characterized by their cylindrical molded construction and axial leads. The series offers various inductance values and tolerance options defined by alphanumeric suffixes. This specific model belongs to the unshielded category, distinguishing it from shielded variants within the broader product family.

Replacement Considerations

Direct substitutes must match the 75 µH inductance, 166 mA current rating, and 3.7 Ohm DC resistance. Verify physical dimensions and lead spacing compatibility. Consult API Delevan official cross-reference lists for validated equivalent part numbers.