Gowanda’s 18M391M is a high-quality molded unshielded RF coil designed for reliable performance in various applications. Weighing 0.95 grams, this component features dimensions of 11.125 × 4.775 × 4.775 mm and is part of the 18M series. It is suitable for through-hole technology (THT) mounting and is classified under the Commercial Off-The-Shelf (COTS) application grade. With an inductance of 3.9 µH and a minimum Q factor of 30, it operates at a test frequency of 7.9 MHz. The coil has a DC resistance of 0.155 ohms and a self-resonant frequency of 65 MHz, supporting a current rating of 0.87 A DC. It is designed to withstand a dielectric withstanding voltage (DWV) of 200 volts and offers a tolerance of ±20%. 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, this component is rated with a moisture sensitivity level (MSL) of 1 and is packaged in tape and reel (T&R) format. Additionally, it is fungal inert, ensuring durability and reliability in demanding environments.
| Weight | 0.95 g |
|---|---|
| Dimensions | 11.125 × 4.775 × 4.775 mm |
| Series | 18M |
| Mounting Type | THT |
| Application Grade | COTS |
| Inductance (µH) | 3.9 |
| Q MIN | 30 |
| Test Freq (MHz) | 7.9 |
| DCR (Ω) | 0.155 |
| SRF (MHz) | 65 |
| Current Rating (A DC) | 0.87 |
| DWV | 200 |
| Tolerance | ±20% |
| 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
