dim millimetres tol. inches tol. a 19.05 0.50 0.75 0.020 b 10.77 0.13 0.424 0.005 c 45 5 45 5 d 9.78 0.13 0.385 0.005 e 5.71 0.13 0.225 0.005 f 27.94 0.13 1.100 0.005 g 1.52r 0.13 0.060r 0.005 h 10.16 0.13 0.400 0.005 i 22.22 max 0.875 max j 0.13 0.02 0.005 0.001 k 2.72 0.13 0.107 0.005 m 1.70 0.13 0.067 0.005 n 5.08 0.50 0.200 0.020 o 34.03 0.13 1.340 0.005 p 1.61r 0.08 0.064r 0.003 D1040UK document number 5460 issue 3 semelab plc. telephone +44(0)1455 556565. fax +44(0)1455 552612. e-mail: sales@semelab.co.uk website: http://www.semelab.co.uk semelab plc reserves the right to change test conditions, parameter limits and package dimensions without notice. information furnished by semelab is believed to be both accurate and reliable at the time of going to press. however semelab assumes no responsibility for any errors or omissions discovered in its use.semelab encourages customers to verify that datasheets are current before placing orders. p d power dissipation bv dss drain ? source breakdown voltage * bv gss gate ? source breakdown voltage * i d(sat) drain current * t stg storage temperature t j maximum operating junction temperature 438w 70v 20v 35a ?65 to 150c 200c mechanical data gold metallised multi-purpose silicon dmos rf fet 400w ? 28v ? 108mhz push?pull features ? simplified amplifier design ? suitable for broad band applications ? low c rss ? simple bias circuits ? low noise ? high gain ? 16 db minimum dr pin 1 source (common) pin 2 drain 1 pin 3 drain 2 pin 4 gate 2 pin 5 gate 1 absolute maximum ratings (t case = 25c unless otherwise stated) applica tions ? vhf fm communications metal gate rf silicon fet tetrafet * per side m k j i o n a c (2 pls) d f e (4 pls) b g (typ) p (2 pls) 1 5 4 3 2 h
D1040UK document number 5460 issue 3 semelab plc. telephone +44(0)1455 556565. fax +44(0)1455 552612. e-mail: sales@semelab.co.uk website: http://www.semelab.co.uk semelab plc reserves the right to change test conditions, parameter limits and package dimensions without notice. information furnished by semelab is believed to be both accurate and reliable at the time of going to press. however semelab assumes no responsibility for any errors or omissions discovered in its use.semelab encourages customers to verify that datasheets are current before placing orders. parameter test conditions min. typ. max. unit 70 7 7 17 5.6 16 65 20:1 380 180 10 v gs = 0 i d = 100ma v ds = 28v v gs = 0 v gs = 20v v ds = 0 i d = 10ma v ds = v gs v ds = 10v i d = 7a p o = 400w v ds = 28v i dq = 2a f = 108mhz v ds = 28v v gs = ?5v f = 1mhz v ds = 28v v gs = 0 f = 1mhz v ds = 28v v gs = 0 f = 1mhz v ma ma vs db % ? pf pfpf electrical characteristics (t case = 25c unless otherwise stated) drain?source breakdown voltagezero gate voltage drain current gate leakage current gate threshold voltage* forward transconductance* common source power gain drain efficiencyload mismatch tolerance input capacitance output capacitancereverse transfer capacitance hazardous material warning the ceramic portion of the device between leads and metal flange is beryllium oxide. beryllium oxide dust is highly toxic and care must be taken during handling and mounting to avoid damage to this area. these devices must never be thrown away with general industrial or domestic waste. r thj?case thermal resistance junction ? case max. 0.4c / w thermal data * pulse test: pulse duration = 300 ms , duty cycle 2% total device per side per side bv dss i dss i gss v gs(th) g fs g ps h vswr c iss c oss c rss
D1040UK document number 5460 issue 3 semelab plc. telephone +44(0)1455 556565. fax +44(0)1455 552612. e-mail: sales@semelab.co.uk website: http://www.semelab.co.uk semelab plc reserves the right to change test conditions, parameter limits and package dimensions without notice. information furnished by semelab is believed to be both accurate and reliable at the time of going to press. however semelab assumes no responsibility for any errors or omissions discovered in its use.semelab encourages customers to verify that datasheets are current before placing orders. figure 1 output power vs. input power figure 2 gain vs. output power figure 3 efficiency vs. output p ower optimum source and load impedance frequency z s z l mhz ww 108 1.5 + j3.5 1.5 - j0.4 application note in applications where a constant output power is required irrespective of variations in temperature or supply voltage etc. then a feedback loop must be incorporated whereby the drain voltage is adjusted to maintain constant output power. 0 2 4 6 8 10 12 14 16 p in (w) 0 100 200 300 400 500 600 p o u t ( w ) class c 32v class a/b 32v class c 28v class a/b 28v f = 108mhz 0 50 100 150 200 250 300 350 400 450 500 550 pout (w) 15 16 17 18 19 20 21 22 23 g a i n d b class c 32v class a/b 32v class c 28v class a/b 28v f = 108mhz 0 100 200 300 400 500 600 pout (w) 0 10 20 30 40 50 60 70 80 90 e f f i c i e n c y % class c 32v class a/b 32v class c 28v class a/b 28v f = 108mhz
D1040UK document number 5460 issue 3 semelab plc. telephone +44(0)1455 556565. fax +44(0)1455 552612. e-mail: sales@semelab.co.uk website: http://www.semelab.co.uk semelab plc reserves the right to change test conditions, parameter limits and package dimensions without notice. information furnished by semelab is believed to be both accurate and reliable at the time of going to press. however semelab assumes no responsibility for any errors or omissions discovered in its use.semelab encourages customers to verify that datasheets are current before placing orders. figure 4 ? typical iv characteristics. figure 5 ? typical cv characteristics. 0 5 10 15 20 25 30 35 40 45 50 0.00 5.00 10.00 15.00 20.00 25.00 30.00 35.00 v ds ( v) i d s (a) v g=13 v vg=12 v vg=11 v v g=10 v vg=9v v g=8 v vg=7 v v g=6 v vg=5 v
D1040UK document number 5460 issue 3 semelab plc. telephone +44(0)1455 556565. fax +44(0)1455 552612. e-mail: sales@semelab.co.uk website: http://www.semelab.co.uk semelab plc reserves the right to change test conditions, parameter limits and package dimensions without notice. information furnished by semelab is believed to be both accurate and reliable at the time of going to press. however semelab assumes no responsibility for any errors or omissions discovered in its use.semelab encourages customers to verify that datasheets are current before placing orders. D1040UK 108mhz test fixture substrate 1.6mm ptfe/glass e r =2.2 tx1 4 turns 50 w coaxial cable wound around toroid tl1 160mm ut85 semi-rigid coax l1, l2 1 turn 1.2mm dia wire on siemens b62152a1x1 2 hole core l3, l4 4 turns 1.2mm dia wire, 10mm internal dia t8 4.8mm wide, all other lines 6mm wide t1 50mm t2 40mm t3 10mm t4 14mm t5 8mm t6 40mm t7 66mm t8 160mm t1 t2 t3 t4 t5 t6 t7 t8 drain bias drain bias rf i/p gate bias rf o/p 5-60pf 5-60pf 5-60pf D1040UK 22pf 15//15//15pf 1nf 43//43//43pf 120pf 22pf 22pf 43//43//43pf 100uf 100nf 100nf l2 1nf 1nf 1nf 100uf 100nf 5-60pf 5-60pf 10k 100k 10 100pf//68pf 10 10 tl 1 l1 tx 1 22pf 10k l3 10 100pf//68pf 1nf l4
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