Gowanda’s 28M391K is a high-quality, reliable electronic component designed for demanding applications. This molded unshielded RF coil weighs 2.65 grams and measures 22.86 × 7.137 × 7.137 mm, making it suitable for through-hole technology (THT) mounting. Part of the 28M series, it is crafted for commercial off-the-shelf (COTS) applications, offering an inductance of 3.9 µH with a minimum Q factor of 60 at a test frequency of 7.9 MHz. The coil features a direct current resistance (DCR) of 0.45 Ω and a self-resonant frequency (SRF) of 95 MHz, with a current rating of 0.995 A DC. It is designed to withstand dielectric withstanding voltages (DWV) of 1000 and 200, with a tolerance of ±10%. The termination type is lead-based (Pb) with a Sn63Pb37 finish, and it uses a phenolic core. Operating effectively between -55°C and +105°C, it is rated at moisture sensitivity level (MSL) 1 and is packaged in tape and reel (T&R) format. Additionally, the component is fungal inert, ensuring 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) | 3.9 |
| Q MIN | 60 |
| Test Freq (MHz) | 7.9 |
| DCR (Ω) | 0.45 |
| SRF (MHz) | 95 |
| Current Rating (A DC) | 0.995 |
| DWV | 1000, 200 |
| Tolerance | ±10% |
| 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
