Gowanda’s 21M331G 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) mounting. It is suitable for commercial off-the-shelf (COTS) applications, offering an inductance of 3.3 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 ohm, a self-resonant frequency (SRF) of 105 MHz, and a current rating of 0.48 A DC. It can withstand dielectric withstanding voltages (DWV) of 1000 and 200, with a tolerance of ±2%. 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 +125°C, it is rated MSL 1 and comes in tape and reel (T&R) packaging. Additionally, the component 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) | 3.3 |
| Q MIN | 40 |
| Test Freq (MHz) | 7.9 |
| DCR (Ω) | 1 |
| SRF (MHz) | 105 |
| Current Rating (A DC) | 0.48 |
| DWV | 1000, 200 |
| Tolerance | ±2% |
| Termination Type | Pb |
| Termination Finish | Sn63Pb37 |
| Core | Phenolic |
| Shielded | No |
| Operating Temperature | -55°C to +125°C |
| MSL | 1 |
| Packaging | T&R |
| Fungal Inert | Yes |
Molded Unshielded RF Coils
