Gowanda’s 28M391J is a high-quality molded unshielded RF coil designed for reliable performance in various applications. This component, part of the 28M series, features a compact design with dimensions of 22.86 × 7.137 × 7.137 mm and a weight of 2.65 g. It is suitable for through-hole technology (THT) mounting and is classified as a Commercial Off-The-Shelf (COTS) application grade. The coil offers an inductance of 3.9 µH with a minimum Q factor of 60, tested at a frequency of 7.9 MHz. It has a direct current resistance (DCR) of 0.45 Ω and a self-resonant frequency (SRF) of 95 MHz, supporting a current rating of 0.995 A DC. The dielectric withstand voltage (DWV) is rated at 1000, 200, with a tolerance of ±5%. The termination type is lead-based with a Sn63Pb37 finish, and the core material is phenolic. Operating within a temperature range of -55°C to +105°C, this component is MSL 1 rated, packaged in tape and reel (T&R), and is fungal inert, ensuring durability and reliability in demanding 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 | ±5% |
| 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
