Gowanda’s 21M471K 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 4.7 µH with a minimum Q factor of 40 at a test frequency of 7.9 MHz. The coil has a DC resistance of 1.8 ohms and a self-resonant frequency of 90 MHz, with a current rating of 0.36 A DC. It can withstand dielectric withstanding voltages of 1000 and 200 volts, with a tolerance of ±10%. The termination type is lead-based with a Sn63Pb37 finish, and the core material is phenolic. Operating efficiently in temperatures ranging from -55°C to +125°C, it has a moisture sensitivity level 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) | 4.7 |
| Q MIN | 40 |
| Test Freq (MHz) | 7.9 |
| DCR (Ω) | 1.8 |
| SRF (MHz) | 90 |
| Current Rating (A DC) | 0.36 |
| DWV | 1000, 200 |
| Tolerance | ±10% |
| 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
