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Chip Silicon Rectifier
FFM301 THRU FFM307
Fast recovery type
Formosa MS
SMC
0.276(7.0) 0.260(6.6) 0.012(0.3) Typ.
Features
Plastic package has Underwriters Laboratory Flammability Classification 94V-O Utilizing Flame Retardant Epoxy Molding Compound. For surface mounted applications. Exceeds environmental standards of MIL-S-19500 / 228 Low leakage current.
0.032(0.8) Typ. 0.040(1.0) Typ. 0.152(3.8) 0.144(3.6)
0.189(4.8) 0.173(4.4)
0.244(6.2) 0.228(5.8)
0.087(2.2) 0.071(1.8)
Mechanical data
Case : Molded plastic, JEDEC DO-214AB Terminals : Solder plated, solderable per MIL-STD-750, Method 2026 Polarity : Indicated by c athode band Mounting P osition : Any Weight : 0.00585 ounce, 0.195 gram
0.040 (1.0) Typ.
Dimensions in inches and (millimeters)
MAXIMUM RATINGS (AT TA=25oC unless otherwise noted)
PARAMETER Forward rectified current Forward surge current CONDITIONS Ambient temperature = 55 C 8.3ms single half sine-wave superimposed on rate load (JEDEC methode) VR = VRRM TA = 25o C
o
Symbol IO IFSM
MIN.
TYP.
MAX. 3.0 100 10.0 300
UNIT A A uA uA
o
Reverse current Thermal resistance Diode junction capacitance Storage temperature
VR = VRRM TA = 100o C Junction to ambient f=1MHz and applied 4vDC reverse voltage
IR Rq JA CJ TSTG -55 50 60
C/w pF
+150
o
C
SYMBOLS
MARKING CODE F31 F32 F33 F34 F35 F36 F37
V RRM
(V)
*1
V RMS
(V) 35 70 140 280 420 560 700
*2
VR
*3
VF
*4
T RR
*5
Operating temperature ( o C)
(V) 50 100 200 400 600 800 1000
(V)
(nS)
FFM301 FFM302 FFM303 FFM304 FFM305 FFM306 FFM307
50 100 200 400 600 800 1000
150
*1 Repetitive peak reverse voltage
1.3 250 500 -55 to +150
*2 RMS voltage *3 Continuous reverse voltage *4 Maximum forward voltage *5 Reverse recovery time
RATING AND CHARACTERISTIC CURVES (FFM301 THRU FFM307)
FIG.1-TYPICAL FORWARD CHARACTERISTICS
AVERAGE FORWARD CURRENT,(A) 3.6 3.0 2.4 1.8 1.2 0.6 0 0
Tj=25 C Pulse Width 300us 1% Duty Cycle Single Phase Half Wave 60Hz Resistive Or Inductive Load
FIG.2-TYPICAL FORWARD CURRENT DERATING CURVE
50
INSTANTANEOUS FORWARD CURRENT,(A)
10 3.0 1.0
20
40
60
80
100
120
140
160
180
200
AMBIENT TEMPERATURE ( C) FIG.4-MAXIMUM NON-REPETITIVE FORWARD SURGE CURRENT
PEAK FORWAARD SURGE CURRENT,(A)
100
0.1
.01
.6
.8
1.0
1.2
1.4
1.6
1.8
2.0
FORWARD VOLT AGE,(V)
80
FIG.3- TEST CIRCUIT DIAGRAM AND REVERSE RECOVERY TIME CHARACTERISTICS
50W NONINDUCTIVE 10W NONINDUCTIVE
60
Tj=25 C 8.3ms Single Half Sine Wave JEDEC method
40
20
(+) 25Vdc (approx.) () 1W NONINDUCTIVE OSCILLISCOPE (NOTE 1) D.U.T.
() PULSE GENERATOR (NOTE 2) (+)
0 1 5 10 50 100
NUMBER OF CYCLES AT 60Hz
NOTES: 1. Rise Time= 7ns max., Input Impedance= 1 megohm.22pF. 2. Rise Time= 10ns max., Source Impedance= 50 ohms.
FIG.5-TYPICAL JUNCTION CAPACITANCE
70 60 50 40 30 20 10
trr +0.5A
| | | | | | | |
0 -0.25A
JUNCTION CAPACITANCE,(pF)
-1.0A 1cm SET TIME BASE FOR 50 / 10ns / cm
0
.01
.05
.1
.5
1
5
10
50
100
REVERSE VOLTAGE,(V)

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