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Product Detailed Parameters
- Description：FIXED IND 68UH 176MA 3.3 OHM TH
- Series：1537R
- Mfr：Delevan
- Package：Tape & Reel (TR)
- Type：Molded
- Material - Core：Iron
- Inductance：68 µH
- Tolerance：±1%
- Current Rating (Amps)：176 mA
- Current - Saturation (Isat)：-
- Shielding：Unshielded
- DC Resistance (DCR)：3.3Ohm Max
- Q @ Freq：55 @ 2.5MHz
- Frequency - Self Resonant：11MHz
- Ratings：-
- Operating Temperature：-55°C ~ 105°C
- Inductance Frequency - Test：2.5 MHz
- 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-68F is a fixed axial leaded inductor with a nominal inductance of 68 µH and a tolerance of ±1%. It features a molded shielded construction using an iron core, designed for through-hole mounting. The component has a maximum DC resistance of 3.3 Ohms and a rated current of 176 mA. It operates within a temperature range of -55°C to 105°C and exhibits a self-resonant frequency of 12 MHz.
Feature Summary
- Molded shielded coil design for electromagnetic interference reduction
- Axial through-hole termination style for standard PCB integration
- Iron core material providing stable inductance characteristics
Applications
- RF filter circuits
- General purpose inductive applications
- Signal processing networks
Procurement Notes
Verify the specific ordering suffix 'F' corresponds to the required ±1% tolerance and 3.3 Ohm DCR specifications. Confirm that the axial leaded package aligns with the target assembly process. Ensure the manufacturer API Delevan is the designated source, as generic equivalents may not match the precise electrical parameters or shielding requirements of this specific part number.
Selection Notes
Select this component when a high-precision 68 µH inductance is required with tight tolerance constraints. The shielded construction makes it suitable for environments sensitive to magnetic coupling. Verify that the 176 mA current rating meets the circuit's operational demands and that the 3.3 Ohm DC resistance does not introduce excessive voltage drop in the application path.
Part Context
This component belongs to the 1537R series of fixed RF inductors manufactured by API Delevan. The series offers various inductance values with different tolerance options, indicated by the final letter suffix. The 1537R-68F specifically denotes the 68 µH variant with ±1% precision, distinguishing it from lower-tolerance models like the 1537R-64H which carries a ±3% tolerance.
Replacement Considerations
- 1537R-64H (±3% tolerance)
- 1537R-68J (±5% tolerance)
FAQ
What is the self-resonant frequency of the 1537R-68F?
The self-resonant frequency is 12 MHz.
Is the 1537R-68F shielded?
Yes, the 1537R-68F features a molded shielded coil design.
