BLF248
Download datasheetVHF push-pull power MOS transistor
Dual push-pull silicon N-channel enhancement mode vertical D-MOS transistor, designed for large signal amplifier applications in the VHF frequency range. The transistor is encapsulated in a 4-lead SOT262 A1 balanced flange package, with two ceramic caps. The mounting flange provides the common source connection for the transistors.
Features and benefits
- High power gain
- Easy power control
- Good thermal stability
- Gold metallization ensures excellent reliability
Applications
- Large signal amplifier applications in the VHF frequency range
Parametrics
| Symbol | Parameter | Conditions | Min | Typ/Nom | Max | Unit |
|---|---|---|---|---|---|---|
| frange | frequency range | 10 | 230 | MHz | ||
| PL(1dB) | nominal output power at 1 dB gain compression | 300 | W | |||
| Test signal: CW | ||||||
| Gp | power gain | PL = 300 W; VDS = 28 V; f = 225 MHz | 10 | 11.5 | dB | |
| ηD | drain efficiency | PL = 300 W; VDS = 28 V; f = 225 MHz; IDq = 250 mA | 55 | 65 | % | |
| PL | output power | 300 | W | |||
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)) |
|---|---|---|---|---|---|---|
| BLF248 | SOT262 (SOT262A1) |
sot262a1_po | Bulk Pack | Withdrawn | Standard Marking |
BLF248,112 (934006630112) |
Discontinuation information
Pinning info
| Pin | Symbol | Description | Simplified outline | Graphic symbol |
|---|---|---|---|---|
| 1 | D1 | drain1 |
|
|
| 2 | D2 | drain2 | ||
| 3 | G1 | gate1 | ||
| 4 | G2 | gate2 | ||
| 5 | S | source |
Documentation
| Title | Type | Date | |
|---|---|---|---|
| VHF push-pull 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 | |
|---|---|---|---|
| BLF248 14 V 250 mA S-parameter data | S-parameter | 2012-06-08 | |
| BLF248 28 V 250 mA S-parameter data | S-parameter | 2012-06-08 |