Description
FIXED IND 3.9UH 443MA 900 MOHM
Specifications
Parameter Guide
Understand the key electrical and mechanical specifications for SMRF1812T-391J.
SMRF1812T-391J 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.
SMRF1812T-391J is rated for 443 mA. Current rating helps determine whether the part can carry the expected DC or RMS current without excessive heating or saturation risk.
SMRF1812T-391J lists a DC resistance of 900mOhm Max. Lower DCR usually reduces conduction loss and improves efficiency in power circuits.
SMRF1812T-391J uses a package or case of 1812 (4532 Metric). 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 | 443 mA |
| DC Resistance (DCR) | 900mOhm Max |
| Saturation Current | - |
| Operating Temperature | -55°C ~ 125°C |
| Dimensions | 0.177" L x 0.126" W (4.50mm x 3.20mm) |
| Case / Size | 1812 (4532 Metric) |
| Package / Case | 1812 (4532 Metric) |
| Supplier | Gowanda |
| Description | FIXED IND 3.9UH 443MA 900 MOHM |
| Series | SMRF1812T |
| Product Status | Active |
| Type / Construction | Molded |
| Core Material | Iron Powder |
| Shielding | Unshielded |
| Q @ Frequency | 28 @ 7.9MHz |
| Self Resonant Frequency | 42MHz |
| Ratings | - |
| Inductance Test Frequency | 7.9 MHz |
| Mounting Type | Surface Mount |
| Supplier Device Package | 1812 |
| Height - Seated (Max) | 0.138" (3.50mm) |
| Features | - |
