Gowanda’s 21M391GLF is a high-quality molded unshielded RF coil designed for reliable performance in various applications. With a weight of 1.7 grams and dimensions of 14.224 × 5.588 × 5.588 mm, this component is part of the 21M series and features through-hole technology (THT) for mounting. It is suitable for commercial off-the-shelf (COTS) applications, offering an inductance of 3.9 µH and a minimum Q factor of 40 at a test frequency of 7.9 MHz. The coil has a direct current resistance (DCR) of 1.2 ohms and a self-resonant frequency (SRF) of 100 MHz, with a current rating of 0.44 A DC. It is designed to withstand dielectric withstanding voltages (DWV) of 1000 and 200, with a tolerance of ±2%. The termination type is RoHS compliant with a Sn/Cu finish, and the core is made of phenolic material. Operating in temperatures ranging from -55°C to +125°C, the component is rated at moisture sensitivity level (MSL) 1 and is packaged in tape and reel (T&R) format. Additionally, it is fungal inert, ensuring durability and reliability in demanding environments.
| Weight | 1.7 g |
|---|---|
| Dimensions | 14.224 × 5.588 × 5.588 mm |
| Series | 21M |
| Mounting Type | THT |
| Application Grade | COTS |
| Inductance (µH) | 3.9 |
| Q MIN | 40 |
| Test Freq (MHz) | 7.9 |
| DCR (Ω) | 1.2 |
| SRF (MHz) | 100 |
| Current Rating (A DC) | 0.44 |
| DWV | 1000, 200 |
| Tolerance | ±2% |
| Termination Type | RoHS |
| Termination Finish | Sn/Cu |
| Core | Phenolic |
| Shielded | No |
| Operating Temperature | -55°C to +125°C |
| MSL | 1 |
| Packaging | T&R |
| Fungal Inert | Yes |
Molded Unshielded RF Coils
