BLF346
Download datasheetVHF power MOS transistor
Silicon N-channel enhancement mode vertical D-MOS transistor encapsulated in a 6-lead, SOT119A flange package, with a ceramic cap. All leads are isolated from the flange. A marking code, showing gate-source voltage (VGS) information is provided for matched pair applications. Refer to the General Section of the associated Data Handbook for further information.
Features and benefits
- High power gain
- Easy power control
- Good thermal stability
- Gold metallization ensures excellent reliability
Applications
- Linear amplifier applications in television transmitters and transposers
Parametrics
| Symbol | Parameter | Conditions | Min | Typ/Nom | Max | Unit |
|---|---|---|---|---|---|---|
| frange | frequency range | 170 | 230 | MHz | ||
| PL(1dB) | nominal output power at 1 dB gain compression | 30 | W | |||
| Test signal: CW | ||||||
| Gp | power gain | VDS = 28 V; Th = 25 °C | 15 | 16.5 | dB | |
| PL | output power | Th = 25 °C | 22 | 30 | W | |
| IMD3 | third-order intermodulation distortion | VDS = 28 V; Th = 25 °C | -55 | -52 | dB | |
Package / Packing
All type numbers in the table below are discontinued.
| Type number |
Package type, (Package outline) |
Outline version | Packing | Product status | Marking |
Orderable part number, (Ordering code (12NC)) |
|---|---|---|---|---|---|---|
| BLF346 | SOT119 (SOT119A) |
sot119a_po | Bulk Pack | Withdrawn | Standard Marking |
BLF346,112 (934006640112) |
Discontinuation information
Pinning info
| Pin | Symbol | Description | Simplified outline | Graphic symbol |
|---|---|---|---|---|
| 1 | S | source |
|
|
| 2 | S | source | ||
| 3 | G | gate | ||
| 4 | D | drain | ||
| 5 | S | source | ||
| 6 | S | source |
Documentation
| Title | Type | Date | |
|---|---|---|---|
| VHF power MOS transistor | Data sheet | 2015-11-30 | |
| Mounting and soldering of RF transistors in air cavity packages | Application note | 2025-02-03 | |
| RF power solutions for ISM, broadcast, navigation and safety radio applications | Brochure | 2026-04-17 | |
| RF power application reports for ISM, broadcast, navigation and safety radio applications | Brochure | 2026-04-17 | |
| Packages for RF power transistors | Leaflet | 2026-04-17 |
Design support
| Title | Type | Date | |
|---|---|---|---|
| BLF346 28 V 3 A S-parameter data | S-parameter | 2012-06-08 | |
| BLF346 14 V 3 A S-parameter data | S-parameter | 2012-06-08 |