Gowanda’s 21M391M Molded Unshielded RF Coils are high-quality electronic components designed for reliable performance in various applications. These coils weigh 1.7 grams and have dimensions of 14.224 × 5.588 × 5.588 mm, making them compact yet efficient. Part of the 21M series, they feature a through-hole technology (THT) mounting type and are suitable for commercial off-the-shelf (COTS) applications. With an inductance of 3.9 µH and a minimum Q factor of 40, these coils operate at a test frequency of 7.9 MHz. They have 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. The dielectric withstanding voltage (DWV) is rated at 1000, 200, and they offer a tolerance of ±20%. The termination type is lead-based (Pb) with a Sn63Pb37 finish, and the core is made of phenolic material. These coils are not shielded but are fungal inert and can operate in temperatures ranging from -55°C to +125°C. They have a moisture sensitivity level (MSL) of 1 and are available in tape and reel (T&R) packaging.
| 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 | ±20% |
| 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
