Gowanda’s SMRF1812-391J is a high-quality, molded unshielded inductor designed for demanding applications, adhering to COTS M83446/39 standards. Weighing just 0.15 grams and measuring 4.064 × 3 × 2.9 mm, this inductor is part of the SMRF1812 series and is suitable for surface mount technology (SMT). It features an inductance of 3.9 µH, a direct current resistance (DCR) of 0.9 Ω, and a current rating of 0.472 A DC. With a self-resonant frequency (SRF) of 40 MHz and a minimum quality factor (Q MIN) of 50, it operates efficiently across a wide frequency range. The inductor is built with a ferrite core and has a termination finish of Sn63Pb37, ensuring reliable performance in temperatures ranging from -55°C to +125°C. It is packaged in tape and reel (T&R) format, is fungal inert, and has a moisture sensitivity level (MSL) of 1, making it ideal for various commercial off-the-shelf (COTS+) applications.
| Weight | 0.15 g |
|---|---|
| Dimensions | 4.064 × 3 × 2.9 mm |
| Series | SMRF1812 |
| Mounting Type | SMT |
| Application Grade | COTS+ |
| Inductance (µH) | 3.9 |
| DCR (Ω) | 0.9 |
| Current Rating (A DC) | 0.472 |
| SRF (MHz) | 40 |
| Test Freq (MHz) | 7.9 |
| Q MIN | 50 |
| Tolerance | ±5% |
| Termination Type | Pb |
| Termination Finish | Sn63Pb37 |
| Core | Ferrite |
| Shielded | No |
| Operating Temperature | -55°C to +125°C |
| MSL | 1 |
| Packaging | T&R |
| Fungal Inert | Yes |
Molded Unshielded Inductor, COTS M83446/39
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