Gowanda’s 28M331G is a high-quality molded unshielded RF coil designed for reliable performance in various electronic applications. Weighing 2.65 grams and measuring 22.86 × 7.137 × 7.137 mm, this component is part of the 28M series and features a through-hole mounting type (THT). It is suitable for commercial off-the-shelf (COTS) applications, offering an inductance of 3.3 µH with a minimum Q factor of 60 at a test frequency of 7.9 MHz. The coil has a DC resistance of 0.305 ohms and a self-resonant frequency of 100 MHz, with a current rating of 1.15 A DC. It is designed to withstand dielectric withstanding voltages of 1000 and 200, with a tolerance of ±2%. The termination type is lead-based with a Sn63Pb37 finish, and the core is made of phenolic material. Operating within a temperature range of -55°C to +105°C, the component is rated at moisture sensitivity level 1 and is packaged in tape and reel (T&R) format. Additionally, it is fungal inert, ensuring durability and reliability in various environments.
| Weight | 2.65 g |
|---|---|
| Dimensions | 22.86 × 7.137 × 7.137 mm |
| Series | 28M |
| Mounting Type | THT |
| Application Grade | COTS |
| Inductance (µH) | 3.3 |
| Q MIN | 60 |
| Test Freq (MHz) | 7.9 |
| DCR (Ω) | 0.305 |
| SRF (MHz) | 100 |
| Current Rating (A DC) | 1.15 |
| DWV | 1000, 200 |
| Tolerance | ±2% |
| Termination Type | Pb |
| Termination Finish | Sn63Pb37 |
| Core | Phenolic |
| Shielded | No |
| Operating Temperature | -55°C to +105°C |
| MSL | 1 |
| Packaging | T&R |
| Fungal Inert | Yes |
Molded Unshielded RF Coils
