Gowanda’s 18M331M Molded Unshielded RF Coils are high-quality electronic components designed for reliable performance in various applications. These coils weigh 0.95 grams and have dimensions of 11.125 × 4.775 × 4.775 mm. They belong to the 18M series and feature a through-hole technology (THT) mounting type, making them suitable for commercial off-the-shelf (COTS) applications. With an inductance of 3.3 µH and a minimum Q factor of 30, these coils operate at a test frequency of 7.9 MHz. They have a DC resistance of 0.14 ohms and a self-resonant frequency of 70 MHz, supporting a current rating of 0.99 A DC. The dielectric withstanding voltage (DWV) is 200, with a tolerance of ±20%. The coils use a powdered iron core and are not shielded, with a termination type of Pb and a termination finish of Sn63Pb37. They operate within a temperature range of -55°C to +125°C and have a moisture sensitivity level (MSL) of 1. Packaged in tape and reel (T&R), these coils are also 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) | 3.3 |
| Q MIN | 30 |
| Test Freq (MHz) | 7.9 |
| DCR (Ω) | 0.14 |
| SRF (MHz) | 70 |
| Current Rating (A DC) | 0.99 |
| DWV | 200 |
| Tolerance | ±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
