BLF278
Download datasheet This product has been discontinued.Click here for discontinuation information.
BLF278
Download datasheetVHF push-pull power MOS transistor
Dual push-pull silicon N-channel enhancement mode vertical D-MOS transistor encapsulated in a 4-lead, SOT262A1 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
- Broadcast transmitters in the VHF frequency range.
Parametrics
Symbol | Parameter | Conditions | Min | Typ/Nom | Max | Unit |
---|---|---|---|---|---|---|
frange | frequency range | 50 | 225 | MHz | ||
PL(1dB) | nominal output power at 1 dB gain compression | 300 | W | |||
Test signal: CW | ||||||
Gp | power gain | PL = 250 W; VDS = 50 V [0] | 14 | 16 | dB | |
ηD | drain efficiency | PL = 250 W; VDS = 50 V; f = 225 MHz; IDq = 500 mA [0] | 50 | 55 | % | |
PL | output power | [0] | 250 | W |
Package / Packing
All type numbers in the table below are discontinued.
Type number | Package | Outline version | Reflow-/Wave soldering |
Packing | Product status | Marking |
Orderable part number, (Ordering code (12NC)) |
---|---|---|---|---|---|---|---|
BLF278 | CDFM4 (SOT262A1) |
sot262a1_po | Bulk Pack | Discontinued | Standard Marking |
BLF278,112 (9339 785 20112) |
|
BLF278/01 | CDFM4 (SOT262A1) |
sot262a1_po | Bulk Pack | Discontinued | Standard Marking |
BLF278/01,112 (9340 318 50112) |
Discontinuation information
Pinning info
Pin | Symbol | Description | Simplified outline | Graphic symbol |
---|---|---|---|---|
1 | D1 | drain1 |
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2 | D2 | drain2 | ||
3 | G1 | gate1 | ||
4 | G2 | gate2 | ||
5 | S | source |
Quality
All type numbers in the table below are discontinued.
Type number | Orderable part number | Chemical content | RoHS / RHF | Leadfree conversion date | MSL | MSL LF |
---|---|---|---|---|---|---|
BLF278 | BLF278,112 | BLF278 |
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Always Pb-free | 1 | 1 |
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 | 2022-02-15 | |
RF Power Solutions for Broadcast Industrial, Scientific and Medical Aerospace & Defense Cooking and Defrosting | Brochure | 2022-07-21 |
Design support
Title | Type | Date | |
---|---|---|---|
BLF278 50V 500mA S-parameter Data | S-parameter | 2012-06-08 | |
BLF278 25V 500mA S-parameter Data | S-parameter | 2012-06-08 |