Gowanda’s 28M391KLF 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 through-hole technology (THT) mounting. It is suitable 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 has a direct current resistance (DCR) of 0.45 ohms and a self-resonant frequency (SRF) of 95 MHz, supporting a current rating of 0.995 A DC. With a dielectric withstanding voltage (DWV) of 1000, 200, and a tolerance of ±10%, it is RoHS compliant with a Sn/Cu termination finish. The phenolic core ensures stability across a wide operating temperature range of -55°C to +105°C, and the component is rated at moisture sensitivity level (MSL) 1, packaged in tape and reel (T&R) format, and is fungal inert.
| 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 | RoHS |
| Termination Finish | Sn/Cu |
| Core | Phenolic |
| Shielded | No |
| Operating Temperature | -55°C to +105°C |
| MSL | 1 |
| Packaging | T&R |
| Fungal Inert | Yes |
Molded Unshielded RF Coils
