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Product Detailed Parameters
- Description：FIXED IND 75UH 166MA 3.7 OHM TH
- Series：1537R
- Mfr：Delevan
- Package：Tape & Reel (TR)
- Type：Molded
- Material - Core：Iron
- Inductance：75 µH
- Tolerance：±3%
- Current Rating (Amps)：166 mA
- Current - Saturation (Isat)：-
- Shielding：Unshielded
- DC Resistance (DCR)：3.7Ohm Max
- Q @ Freq：55 @ 2.5MHz
- Frequency - Self Resonant：10.5MHz
- 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-70H is a fixed axial leaded RF inductor with a nominal inductance of 75 uH and a tolerance of 3%. It features a molded unshielded coil construction, suitable for through-hole PCB mounting. The component has a maximum DC resistance of 3.7 Ohms and supports a maximum DC current of 166 mA. Key electrical parameters include a minimum Q factor of 55 and a self-resonant frequency of 10.5 MHz. Physical dimensions are 9.53 mm in length and 3.96 mm in diameter.
Feature Summary
- Molded unshielded coil design for RF applications
- Axial termination style for through-hole mounting
- High Q factor performance at specified frequencies
Applications
- RF filtering circuits
- Tuning networks
- Impedance matching stages
Procurement Notes
Verify the specific ordering suffix to ensure correct packaging configuration, as variations may exist between tape-and-reel and bulk formats. Confirm RoHS compliance status directly with the manufacturer or authorized distributor documentation prior to procurement. Ensure the selected variant matches the required inductance tolerance and current rating for the target application environment.
Selection Notes
Select this component when an unshielded axial inductor with 75 uH nominal value is required for RF circuitry. Consider the 166 mA current limit and 3.7 Ohm DC resistance when designing power-sensitive sections. The 10.5 MHz self-resonant frequency defines the upper operational limit for effective inductive behavior in high-frequency designs.
Part Context
This part belongs to the Delevan 1537/R series of fixed RF inductors. The series offers various inductance values and tolerances within a standardized axial package form factor. These components are engineered for reliability in radio frequency signal processing and passive filter implementations.
Replacement Considerations
Public confirmed substitute part numbers are not available in the provided source data. Cross-reference with other manufacturers offering 75 uH axial RF inductors only if exact parameter matching is verified against official datasheets.
