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Product Detailed Parameters
- Description：FIXED IND 240UH 115MA 7.8 OHM TH
- Series：1537R
- Mfr：Delevan
- Package：Tape & Reel (TR)
- Type：Molded
- Material - Core：Iron
- Inductance：240 µH
- Tolerance：±3%
- Current Rating (Amps)：115 mA
- Current - Saturation (Isat)：-
- Shielding：Unshielded
- DC Resistance (DCR)：7.8Ohm Max
- Q @ Freq：65 @ 790kHz
- Frequency - Self Resonant：5.9MHz
- Ratings：-
- Operating Temperature：-55°C ~ 105°C
- Inductance Frequency - Test：790 kHz
- Mounting Type：Through Hole
- Package / Case：Axial
- Supplier Device Package：-
- Size / Dimension：0.156" Dia x 0.375" L (3.96mm x 9.53mm)
- Height - Seated (Max)：-
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Overview
The Delevan 1537R-94H is a fixed axial leaded RF inductor from the 1537(R) series, featuring molded unshielded construction. It provides an inductance of 240 µH with a tolerance of ±3%. The component has a maximum DC resistance of 7.8 Ohms and a rated current of 115 mA. Designed for through-hole PCB mounting, it operates within a temperature range of -55°C to +105°C.
Feature Summary
- Molded unshielded coil construction for RF applications
- Axial leaded termination style for standard PCB mounting
- Established reliability design suitable for demanding environments
Applications
- RF circuit filtering
- Impedance matching networks
- General purpose RF signal processing
Procurement Notes
Verify the specific ordering suffix and packaging configuration when sourcing this component. Confirm that the manufacturer's standard delivery terms align with project schedules, as availability may vary. Ensure the procurement documentation explicitly references the Delevan part number 1537R-94H to guarantee authenticity and correct specifications.
Selection Notes
Select this inductor when a high-inductance value of 240 µH is required in a compact axial package. Consider its 115 mA current rating and 7.8 Ohm DC resistance for power handling constraints. The unshielded design necessitates careful layout planning to minimize electromagnetic interference with adjacent sensitive components in dense RF assemblies.
Part Context
This component belongs to the Delevan 1537(R) series of RF inductors. The series offers various inductance values ranging from low nanohenries to hundreds of microhenries, all sharing consistent physical dimensions and mounting characteristics. This specific model represents the higher inductance end of the standard molded lineup.
Replacement Considerations
Cross-reference with other Delevan 1537R series variants for different inductance or tolerance requirements. Verify that any substitute maintains the same axial footprint and operating temperature range to ensure mechanical and thermal compatibility.
