Gowanda’s 21M681J is a high-quality molded unshielded RF coil designed for reliable performance in various electronic applications. Weighing 1.7 grams and measuring 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 6.8 µH with a minimum Q factor of 35 at a test frequency of 7.9 MHz. The coil has a direct current resistance (DCR) of 0.2 ohms and a self-resonant frequency (SRF) of 50 MHz, with a current rating of 0.71 A DC. It can withstand dielectric withstanding voltages (DWV) of 1000 and 200 volts, with a tolerance of ±5%. The termination type is lead-based with a Sn63Pb37 finish, and the core is made of powdered iron. Operating within a temperature range of -55°C to +105°C, it has a moisture sensitivity level (MSL) of 1 and is packaged in tape and reel (T&R) format. Additionally, the component is fungal inert, ensuring durability and reliability in various environments.
| Weight | 1.7 g |
|---|---|
| Dimensions | 14.224 × 5.588 × 5.588 mm |
| Series | 21M |
| Mounting Type | THT |
| Application Grade | COTS |
| Inductance (µH) | 6.8 |
| Q MIN | 35 |
| Test Freq (MHz) | 7.9 |
| DCR (Ω) | 0.2 |
| SRF (MHz) | 50 |
| Current Rating (A DC) | 0.71 |
| DWV | 1000, 200 |
| Tolerance | ±5% |
| Termination Type | Pb |
| Termination Finish | Sn63Pb37 |
| Core | Powdered Iron |
| Shielded | No |
| Operating Temperature | -55°C to +105°C |
| MSL | 1 |
| Packaging | T&R |
| Fungal Inert | Yes |
Molded Unshielded RF Coils
