Description
FIXED IND 3.9UH 250MA 320 MOHM
Specifications
Parameter Guide
Understand the key electrical and mechanical specifications for 78F3R9J.
78F3R9J 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.
78F3R9J is rated for 250 mA. Current rating helps determine whether the part can carry the expected DC or RMS current without excessive heating or saturation risk.
78F3R9J lists a DC resistance of 320mOhm Max. Lower DCR usually reduces conduction loss and improves efficiency in power circuits.
78F3R9J 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 | ±5% |
| Current Rating | 250 mA |
| DC Resistance (DCR) | 320mOhm Max |
| Saturation Current | - |
| Operating Temperature | -55°C ~ 105°C |
| Dimensions | 0.110" Dia x 0.280" L (2.79mm x 7.11mm) |
| Case / Size | Axial |
| Package / Case | Axial |
| Supplier | Bourns Inc. |
| Description | FIXED IND 3.9UH 250MA 320 MOHM |
| Series | 78F |
| Product Status | Obsolete |
| Type / Construction | Drum Core, Wirewound |
| Core Material | Ferrite |
| Shielding | Unshielded |
| Q @ Frequency | 45 @ 7.9MHz |
| Self Resonant Frequency | 65MHz |
| Ratings | - |
| Inductance Test Frequency | 7.9 MHz |
| Mounting Type | Through Hole |
| Supplier Device Package | - |
| Height - Seated (Max) | - |
| Features | - |
