This product is not recommended for design-in.
The recommended type is: BLS9G2731LS-400

LDMOS S-Band radar power transistor

350 W LDMOS power transistor for S-band radar applications in the frequency range from 2.7 GHz to 2.9 GHz.

Features and benefits

  • High efficiency
  • Excellent ruggedness
  • Designed for S-band operation (2.7 GHz to 2.9 GHz)
  • Excellent thermal stability
  • Easy power control
  • Integrated ESD protection
  • High flexibility with respect to pulse formats
  • Internally matched for ease of use
  • Compliant to Directive 2002/95/EC, regarding Restriction of Hazardous Substances (RoHS)


  • S-band radar applications in the frequency range 2.7 GHz to 2.9 GHz


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All documentation

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Design tool

RF Power Lifetime Calculator


LDMOS S-Band radar power transistor



Symbol Parameter Conditions Min Typ/Nom Max Unit
frange frequency range 2700 2900 MHz
PL(1dB) nominal output power at 1 dB gain compression 350 W
Test signal: Pulsed RF
Gp power gain PL = 350 W; VDS = 32 V 11 13 dB
RLin input return loss PL = 350 W; VDS = 32 V; IDq = 200 mA -10 dB
ηD drain efficiency PL = 350 W; VDS = 32 V; 2700 MHz ≤ f ≤ 2900 MHz; IDq = 200 mA 46 50 %
Pdroop(pulse) pulse droop power PL = 350 W 0 0.5 dB
tr rise time PL = 350 W; VDS = 32 V 8 50 ns
tf fall time PL = 350 W; VDS = 32 V 5 50 ns

Package / Packing

All type numbers in the table below are not recommended for design-in.

Type number Package Outline version Reflow-/Wave
Packing Product status Marking Orderable part number,
(Ordering code (12NC))
BLS7G2729LS-350P SOT539B
sot539b_po Bulk Pack Active Standard Marking BLS7G2729LS-350P,1
(9340 656 61112)

Pinning info

Pin Symbol Description Simplified outline Graphic symbol
1 D1 drain1
2 D2 drain2
3 G1 gate1
4 G2 gate2
5 S source


All type numbers in the table below are not recommended for design-in.

Type number Orderable part number Chemical content RoHS / RHF Leadfree conversion date MSL MSL LF
Quality and reliability disclaimer

Ordering & availability

Type number Ordering code (12NC) Orderable part number Distributor Buy online Samples
BLS7G2729LS-350P 9340 656 61112 BLS7G2729LS-350P,1 DigiKey Buy Not available

Design support

Title Type Date
PCB Design BLS7G2729L(S)-350P (Data sheet) Design support 2013-08-29
BLS7G2729L-350P ADS-2016 Simulation model 2017-04-13