FEATURES
Low c ost
Diffused junction
Low leak age
Low f o r war d volt ag e dr op
High c ur r ent c apability
and similar solv ents
M ECHANICAL DAT A
Case:JEDEC DO-41,molded plastic
T er minals: Axial lead ,solderable per
M IL- STD-202,Method 208
P olari t y: Color band denotes c athode
W e ight: 0.34 gra ms
Mounting posit ion: Any
MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS
Ratings at 25 ambient temperatur e un less ot her wise spec if ied.
Single phase, half wave,60 Hz,r esistive or indu c t ive load . Fo r c apac itive load,der ate by 20%.
1N
4946 1N
4947 1N
4948 UNITS
Maximum recurrent pe ak reverse voltage VRRM
600 800 1000 V
Maximum RMS voltage VRMS
420 560 700 V
Maximum DC blocking voltage VDC
600 800 1000 V
Maximum ave rage forw ard rect ified current
9.5mm le ad length, @TA=75
Peak forw ard surge current
8.3ms single half-sine-wave
superimposed on rated load @T J=125
Maximum in sta nt aneous forw ard voltage
@ 1.0 A
VF
V
Maximum reverse current @T A=25
at rated DC bl ocking voltage @TA=100
Maximum reverse recovery time (Note1) trr
ns
Typical junction capacitance (Note2) CJ
pF
Typical thermal resistance (Note3) RฮธJA /W
Operat ing junction temperature range TJ
Storage temperature range TSTG
N OTE: 1. Meas ured wit h I F=0.5A, IR=1A, I rr=0.25A.
1N4942 - - - 1N4948
150 250 500
12
VOLTAGE RANGE: 200 --- 1000 V
CURRENT: 1.0 A
400
1N
4944
1.0 A
FAST RECOVERY RECTI FI ER
IF(AV)
The plastic material carries U/L recognition 94V -0
IR
30.0
5.0
100
1.3
A
IFSM
3. Thermal res ist anc e from junc t ion to am bient .
A
2. Measured at 1. 0MHz and applied revers e volt age of 4. 0V D C.
- 55---- +150
- 55---- + 150
55
GALAXY ELECTRICAL
DO - 41
200
140
200
1N
4942
E asily c leaned with Fr eon,Alc oh ol, Isopro panol
400
280
www.galaxycn.com
BL
BLGALAXY ELECTRICALDocument Number 0261081 1.
.2
TJ= 2 5
f=1 M H z
1.1
2
4
.4
1.0 2
40
10
20
60
100
4
10 20 40 100
01
8.3ms Single Half
Sine-W ave
10
20
30
50
40
424020
10861008060
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
TJ=25
Pulse W idth=300ยตS
1.8 2.0
.2
25
0 50 75
.4.
.6
.8
1.0
125100 150 175
Single Phase
Half Wave 60HZ
Resistive or
Inductive Load
-1.0A
-0.25A
0
+0.5A
trr
1cm
P U L S E
GENERATOR
(N OTE2 )
D.U.T.
1
N.1.
50
N.1.
OSCILLOSCOPE
(N OTE 1 )
(+)
50VDC
(APPROX)
(-)
10
N.1.
(-)
(+)
BLGALAXY ELECTRICAL
www.galaxycn.com
Document Number 0261081 2.
AMPERES
AMPERES
PEAK FORWARD SURGE CURRE
N
AMPERES
JUNCTION CAPACITANCE,pF
FIG.2 - - FORWARD DERATING CURVE FIG.3 -- TYPICAL FORWARD CHARACTERISTICS
NOTES: 1 . RI SE TI ME = 7ns MAX . IN PUT IMPEDANCE = 1M . 22PF
2. RI SE TI ME = 10ns MAX. SOURCE IM PEDANCE = 50 SET TIME BASE FOR 50/100 ns /cm
RATINGS AND CHARACTERISTIC CURVES
FIG.1 -- REVERSE RECOVERY TIME CHARAC TERISTIC AND TEST CIRCUIT DIAGRAM
INSTANTANEOUS FORWARD CURRENT
1N4942 - - - 1N4948
NUMBER OF CYCLES AT 60 Hz REVERSE VOLTAGE,VOLTS
FIG.4--PEAK FORWARD SURGE CURRENT FIG.5-- TYPICAL JUNCTION CAPACITANCE
AVERAGE FORWARD CURRENT
AM BIEN T T EM P ER ATU R E, IN STAN T A N EOUS F O R W A R D VOLT AGE,VO LTS
