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POSEICO
POSEICO SPA POwer SEmiconductors Italian COrporation
POSEICO SPA Via N. Lorenzi 8, 16152 Genova - ITALY Tel. ++ 39 010 6556234 - Fax ++ 39 010 6557519 Sales Office: Tel. ++ 39 010 6556775 - Fax ++ 39 010 6442510
FAST RECOVERY DIODE
ARF674
Repetitive voltage up to Mean forward current Surge current 4500 V 945 A 15 kA
FINAL SPECIFICATION
feb 97 - ISSUE : 03
Symbol
Characteristic
Conditions
Tj [C]
Value
Unit
BLOCKING
V V I
RRM RSM RRM
Repetitive peak reverse voltage Non-repetitive peak reverse voltage Repetitive peak reverse current V=VRRM
125 125 125
4500 4600 80
V V mA
CONDUCTING
I I I
F (AV)
Mean forward current Mean forward current Surge forward current I t Forward voltage Threshold voltage Forward slope resistance
180 sin ,50 Hz, Th=55C, double side cooled 180 square,50 Hz,Th=55C,double side cooled Sine wave, 10 ms reapplied reverse voltage up to 50% VRSM Forward current = 1570 A 125
945 940 15 1125 x1E3 25 125 125 3 1.90 0.700
A A kA As V V mohm
F (AV) FSM
I t V V r
FM F(TO) F
SWITCHING
t rr Q rr I rr s V
FR
Reverse recovery time Reverse recovery charge Peak reverse recovery current Softness (s-factor), min Peak forward recovery
IF= di/dt= VR =
500 A 30 A/s 100 V 125
8 600 150 0.4
s C A
di/dt=
400 A/s
42
V
MOUNTING
R th(j-h) T F
j
Thermal impedance Operating junction temperature Mounting force Mass
Junction to heatsink, double side cooled
21 -30 / 125 22.0 / 24.5 520
C/kW C kN g
ORDERING INFORMATION : ARF674 S 45 standard specification
VRRM/100
ARF674 FAST RECOVERY DIODE
FINAL SPECIFICATION feb 97 - ISSUE : 03
POSEICO
POSEICO SPA POwer SEmiconductors Italian COrporation
DISSIPATION CHARACTERISTICS SQUARE WAVE
3500
DC 180 120 90
3000
DC
Power Dissipation [W]
2500
30
60
2000
1500
1000
500
0 0 200 400 600 800 1000 1200 1400
Mean Forward Current [A]
SINE WAVE
3500
180 120
3000
60
90
DC
Power Dissipation [W]
2500
30
2000
1500
1000
500
0 0 200 400 600 800 1000 1200 1400
Mean Forward Current [A]
ARF674 FAST RECOVERY DIODE
FINAL SPECIFICATION feb 97 - ISSUE : 03
POSEICO
POSEICO SPA POwer SEmiconductors Italian COrporation
SWITCHING CHARACTERISTICS
FORWARD RECOVERY VOLTAGE
80 70
Tj = 125 C
60 50 VFR [V] 40 30 20 10 0 0 200 400 600 di/dt [A/s] 800 1000 1200
Tj = 25 C
IF VFR
VF
REVERSE RECOVERY CHARGE Tj = 125 C
REVERSE RECOVERY CURRENT Tj = 125 C
3500
1000 A
1200
1000 A
3000 2500 Qrr [C] 2000 1500
250 A 500 A
1000
500 A
800 Irr [A]
250 A
600
400
1000 500 0 0 100 di/dt 200 [A/s] 300 400 200
0 0 100 200 di/dt [A/s] 300 400
ta = Irr / (di/dt)
tb = trr - ta
IF
d i/d t ta tb
Softness (s factor) s = tb / ta
25% di Irr
Energy dissipation during recovery Er = Vr * (Qrr - Irr *ta / 2 )
Irr
Vr
ARF674 FAST RECOVERY DIODE
FINAL SPECIFICATION feb 97 - ISSUE : 03
POSEICO
POSEICO SPA POwer SEmiconductors Italian COrporation
FORWARD CHARACTERISTIC Tj = 125 C
SURGE CHARACTERISTIC Tj = 125 C
3000 2500 Forward Current [A] 2000 ITSM [kA] 1500 1000 500 0 1 1.5 2 2.5 3 3.5 4 Forward Voltage [V]
16 14 12 10 8 6 4 2 0 1 10 n cycles 100
TRANSIENT THERMAL IMPEDANCE DOUBLE SIDE COOLED
25.0
20.0
Zth j-h [C/kW]
15.0
10.0
5.0
0.0 0.001
0.01
0.1 t[s]
1
10
100
Distributed by All the characteristics given in this data sheet are guaranteed only with uniform clamping force, cleaned and lubricated heatsink, surfaces with flatness < .03 mm and roughness < 2 m. In the interest of product improvement POSEICO SPA reserves the right to change any data given in this data sheet at any time without previous notice. If not stated otherwise the maximum value of ratings (simbols over shaded background) and characteristics is reported.

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