Description
FIXED IND 3.9UH 440MA 1.2 OHM TH
Specifications
Parameter Guide
Understand the key electrical and mechanical specifications for 21M391KLF.
21M391KLF has an inductance value of 3.9 µH. This value indicates how much magnetic energy the component can store and is one of the first parameters to compare when selecting an inductor.
21M391KLF is rated for 440 mA. Current rating helps determine whether the part can carry the expected DC or RMS current without excessive heating or saturation risk.
21M391KLF lists a DC resistance of 1.2Ohm Max. Lower DCR usually reduces conduction loss and improves efficiency in power circuits.
21M391KLF uses a package or case of Axial. Package size affects PCB footprint, height clearance, thermal behavior, and compatibility with automated assembly.
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Product Attributes
| Inductance | 3.9 µH |
| Tolerance | ±10% |
| Current Rating | 440 mA |
| DC Resistance (DCR) | 1.2Ohm Max |
| Operating Temperature | -55°C ~ 125°C |
| Dimensions | 0.220" Dia x 0.560" L (5.59mm x 14.22mm) |
| Case / Size | Axial |
| Package / Case | Axial |
| Supplier | Gowanda |
| Description | FIXED IND 3.9UH 440MA 1.2 OHM TH |
| Series | 21M |
| Product Status | Active |
| Type / Construction | Molded |
| Core Material | Phenolic |
| Shielding | Unshielded |
| Q @ Frequency | 40 @ 7.9MHz |
| Self Resonant Frequency | 100MHz |
| Inductance Test Frequency | 7.9 MHz |
| Mounting Type | Through Hole |
| Supplier Device Package | Axial |
