BLF147
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This product has been discontinued.
Click here for discontinuation information.
The replacement is: BLF647P
The replacement is: BLF647P
VHF power MOS transistor
Silicon N-channel enhancement mode vertical D-MOS transistor encapsulated in a 4-lead, SOT121B 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 handbook for further information.
Features and benefits
- High power gain
- Low intermodulation distortion
- Easy power control
- Good thermal stability
- Withstands full load mismatch
Applications
- Industrial and military applications in the HF/VHF frequency range.
Parametrics
| Symbol | Parameter | Conditions | Min | Typ/Nom | Max | Unit |
|---|---|---|---|---|---|---|
| frange | frequency range | 1 | 175 | MHz | ||
| PL(1dB) | nominal output power at 1 dB gain compression | 150 | W | |||
| Test signal: CW | ||||||
| Gp | power gain | VDS = 28 V | 14 | dB | ||
| ηD | drain efficiency | VDS = 28 V; f = 108 MHz; IDq = 1 A | 70 | % | ||
| PL | output power | 150 | W | |||
Package / Packing
All type numbers in the table below are discontinued.
| Type number | Package | Outline version | Packing | Product status | Marking |
Orderable part number, (Ordering code (12NC)) |
|---|---|---|---|---|---|---|
| BLF147 | CRFM4 (SOT121B) |
sot121b_po | Bulk Pack | Withdrawn | Standard Marking |
BLF147,112 (9339 300 00112) |
Discontinuation information
| Type number | Ordering code (12NC) | Orderable part number | LTB | LTD | Replacement | DN notice | Product status |
|---|---|---|---|---|---|---|---|
| BLF147 | 9339 300 00112 | BLF147,112 | 2014-03-31 | 2014-06-30 | BLF647P | 201306022DN | Withdrawn |
Pinning info
| Pin | Symbol | Description | Simplified outline | Graphic symbol |
|---|---|---|---|---|
| 1 | D | drain |
|
|
| 2 | S | source | ||
| 3 | G | gate | ||
| 4 | S | source |
Documentation
| Title | Type | Date | |
|---|---|---|---|
| VHF power MOS transistor | Data sheet | 2006-12-08 | |
| 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 | 2025-02-12 | |
| RF power application reports for ISM, broadcast, navigation and safety radio applications | Brochure | 2024-10-08 | |
| Packages for RF power transistors | Leaflet | 2024-10-25 |
Design support
| Title | Type | Date | |
|---|---|---|---|
| BLF147 28 V 1000 mA S-parameter data | S-parameter | 2012-06-08 | |
| BLF147 14 V 1000 mA S-parameter data | S-parameter | 2012-06-08 |