features low cost glass passivated junction low leakage low forward voltage drop high current capability and s im ilar s olvents mechanical data cas e:jedec do-41,m olded plas tic terminals: axial lead ,solderable per mil- std-202,method 208 polarity: color band denotes cathode weight: 0.34 grams mounting position: any maximum ratings and electrical characteristics ratings at 25 ambient temperature unless otherwise specified. single phase,half wave,60 hz,resistive or inductive load. for capacitive load,derate by 20%. 1n 4946g 1n 4947g 1n 4948g units maximum recurrent peak reverse voltage v rrm 600 800 1000 v ma x imum rms v oltag e v rms 420 560 700 v ma x imum dc b lo c king v o lt age v dc 600 800 1000 v maximum average forw ard rectified current 9.5mm lead length, @t a =75 peak f orw ard surge current 8.3ms single half-sine-w ave superimposed on rated load @t j =125 maximum instantaneous forw ard voltage @ 1.0 a v f v maximum reverse current @t a =25 at rated dc blocking voltage @t a =125 ma x imum r ev er s e r e c ov er y time ( note 1) t rr ns typical junction capacitance (note2) c j pf typical thermal resistance (note3) r ja /w operating junction temperature range t j storage temperature range t stg note:1. measured with i f =0.5a, i r =1a, i rr =0.25a. 1n4942g - - 1N4948G 150 250 500 12 voltage range: 200 --- 1000 v current: 1.0 a 400 1n 4944g 1.0 a fast recovery rectifiers i f(av) the plas tic m aterial carries u/l recognition 94v-0 i r 30.0 5.0 100 1.3 a i fsm 3. thermal resistance f rom junction to ambient. a 2. measured at 1.0mhz and applied rev erse v oltage of 4.0v dc. - 55---- +150 - 55---- + 150 55 galaxy el ectrical do - 41 200 140 200 1n 4942g easily cleaned with freon,alcohol,isopropanol 400 280 www.galaxycn.com bl bl galaxy electrical document number 0261092 1. dimensions in millimeters
.2 tj=25 f=1mhz 1 .1 2 4 .4 1.0 2 40 10 20 60 100 4 10 20 40 100 0 1 8.3ms single half sine-wave 10 20 30 50 40 4 24 0 20 10 8 6 1008060 0.6 0.8 1.0 1.2 1.4 1.6 0.01 0.02 0.06 0.04 0.1 0.2 0.4 1.0 2 4 10 100 t j =25 pulse width=300 ratings and characteristic curves fi g. 1 -- reverse recovery ti me characteri sti c and test ci rcui t di agram instantaneous forward current 1n4942 g- - - 1N4948G number of cycles at 60 hz reverse voltage,volts fi g. 4--peak forward surge current fi g. 5-- typi cal juncti on capaci tance average forward current ambient temperature, instantaneous forward voltage,volts
|
