Description
FIXED IND 1.8UH 390MA 650 MOHM
Specifications
Parameter Guide
Understand the key electrical and mechanical specifications for PM40-1R8K.
PM40-1R8K has an inductance value of 1.8 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.
PM40-1R8K is rated for 390 mA. Current rating helps determine whether the part can carry the expected DC or RMS current without excessive heating or saturation risk.
PM40-1R8K lists a DC resistance of 650mOhm Max. Lower DCR usually reduces conduction loss and improves efficiency in power circuits.
PM40-1R8K 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 | 1.8 µH |
| Tolerance | ±10% |
| Current Rating | 390 mA |
| DC Resistance (DCR) | 650mOhm Max |
| 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 | Bourns Inc. |
| Description | FIXED IND 1.8UH 390MA 650 MOHM |
| Series | PM40 |
| Product Status | Obsolete |
| Type / Construction | Molded |
| Core Material | Iron Powder |
| Shielding | Unshielded |
| Q @ Frequency | 50 @ 7.96MHz |
| Self Resonant Frequency | 60MHz |
| Inductance Test Frequency | 7.96 MHz |
| Mounting Type | Surface Mount |
| Supplier Device Package | 1812 |
| Height - Seated (Max) | 0.126" (3.20mm) |
