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Gowanda’s SMRF1812-331J is a high-quality molded unshielded inductor designed for demanding applications, adhering to COTS M83446/39 standards. Weighing just 0.15 grams, it features compact dimensions of 4.064 × 3 × 2.9 mm and is suitable for surface mount technology (SMT). This inductor offers an inductance of 3.3 µH with a direct current resistance (DCR) of 0.8 Ω and a current rating of 0.501 A DC. It operates efficiently with a self-resonant frequency (SRF) of 45 MHz and a test frequency of 7.9 MHz, ensuring a minimum Q factor of 50. The product is built with a ferrite core and has a tolerance of ±5%. It is lead-terminated with a Sn63Pb37 finish, and although it is not shielded, it is designed to perform reliably across a wide temperature range of -55°C to +125°C. With a moisture sensitivity level (MSL) of 1, it is packaged in tape and reel (T&R) format and is fungal inert, making it ideal for various critical applications.
| Weight | 0.15 g |
|---|---|
| Dimensions | 4.064 × 3 × 2.9 mm |
| Series | SMRF1812 |
| Mounting Type | SMT |
| Application Grade | COTS+ |
| Inductance (µH) | 3.3 |
| DCR (Ω) | 0.8 |
| Current Rating (A DC) | 0.501 |
| SRF (MHz) | 45 |
| 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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