Gowanda’s 21M181M Molded Unshielded RF Coils are a part of the Series 21M, designed for high-quality and reliable performance in electronic applications. These coils weigh 1.7 grams and have dimensions of 14.224 × 5.588 × 5.588 mm, making them suitable for through-hole technology (THT) mounting. They are categorized under Commercial Off-The-Shelf (COTS) application grade, with an inductance of 1.8 µH and a minimum Q factor of 40 at a test frequency of 7.9 MHz. The coils have a direct current resistance (DCR) of 0.37 ohms and a self-resonant frequency (SRF) of 150 MHz, supporting a current rating of 0.79 A DC. They are designed to withstand a dielectric withstanding voltage (DWV) of 1000, 200 and have a tolerance of ±20%. The termination type is lead-based with a Sn63Pb37 finish, and the core material is phenolic. These coils are not shielded but are fungal inert, with an operating temperature range from -55°C to +125°C, 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) | 1.8 |
| Q MIN | 40 |
| Test Freq (MHz) | 7.9 |
| DCR (Ω) | 0.37 |
| SRF (MHz) | 150 |
| Current Rating (A DC) | 0.79 |
| 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
