Gowanda’s 18M331K is a high-quality molded unshielded RF coil designed for reliable performance in various electronic applications. With a compact weight of 0.95 grams and dimensions of 11.125 × 4.775 × 4.775 mm, this component is part of the 18M series and features through-hole technology (THT) mounting. It is suitable for commercial off-the-shelf (COTS) applications, offering an inductance of 3.3 µH and a minimum Q factor of 30 at a test frequency of 7.9 MHz. The coil has a direct current resistance (DCR) of 0.14 ohms and a self-resonant frequency (SRF) of 70 MHz, with a current rating of 0.99 A DC. It can withstand a dielectric withstanding voltage (DWV) of 200 volts and has a tolerance of ±10%. The termination type is lead-based with a Sn63Pb37 finish, and it utilizes a powdered iron core. Operating efficiently in temperatures ranging from -55°C to +125°C, the component is rated at moisture sensitivity level (MSL) 1 and is packaged in tape and reel (T&R) format. Additionally, it is fungal inert, ensuring durability and reliability in diverse environments.
| Weight | 0.95 g |
|---|---|
| Dimensions | 11.125 × 4.775 × 4.775 mm |
| Series | 18M |
| Mounting Type | THT |
| Application Grade | COTS |
| Inductance (µH) | 3.3 |
| Q MIN | 30 |
| Test Freq (MHz) | 7.9 |
| DCR (Ω) | 0.14 |
| SRF (MHz) | 70 |
| Current Rating (A DC) | 0.99 |
| DWV | 200 |
| Tolerance | ±10% |
| Termination Type | Pb |
| Termination Finish | Sn63Pb37 |
| Core | Powdered Iron |
| Shielded | No |
| Operating Temperature | -55°C to +125°C |
| MSL | 1 |
| Packaging | T&R |
| Fungal Inert | Yes |
Molded Unshielded RF Coils
