FAST RECOVERY DIODE ARF240
Repetitive voltage up to 2500 V
Mean forward current
280
A
Surge current 3kA
FINAL SPECIFICATION
feb 97 - ISSUE : 04
Symbol Characteristic Conditions
Tj
[°C] Value Unit
BLOCKING
VRRM Repetitive peak reverse voltage 150 2500 V
VRSM Non-repetitive peak reverse voltage 150 2600 V
IRRM Repetitive peak reverse current V=VRRM 150 50 mA
CONDUCTING
IF (AV) Mean forward current 180° sin ,50 Hz, Th=55°C, double side cooled 280 A
IF (AV) Mean forward current 180° square,50 Hz,Th=55°C,double side cooled 285 A
IFSM Surge forward current Sine wave, 10 ms 150 3 kA
I² t I² t reapplied reverse voltage up to 50% VRSM 45 x1E3 A²s
VFM Forward voltage
Forward current =
1000 A25 4.8 V
VF(TO) Threshold voltage 150 1.50 V
rFForward slope resistance 150 3.00 mohm
SWITCHING
trr Reverse recovery time I F = 200 A2.0 µs
Qrr Reverse recovery charge di/dt = 80 A/µs 150 90 µC
Irr Peak reverse recovery current VR = 100 V90 A
sSoftness (s-factor), min 0.4
VFR Peak forward recovery di/dt = 400 A/µs 150 30 V
MOUNTING
Rth(j-h) Thermal impedance Junction to heatsink, double side cooled 95 °C/kW
TjOperating junction temperature -30 / 150 °C
FMounting force 4.5 / 5.0 kN
Mass 55 g
ORDERING INFORMATION : ARF240 S 25
standard specification VRRM/100
Via N. Lorenzi 8 - I 16152 GENOVA - ITALY
Tel. int. +39/(0)10 6556549 - (0)10 6556488
Fax Int. +39/(0)10 6442510
Tx 270318 ANSUSE I -
ANSALDO
Ansaldo Trasporti s.p.a.
Unita' Semiconduttori
ARF240 FAST RECOVERY DIODE
FINAL SPECIFICATION feb 97 - ISSUE : 04
DISSIPATION CHARACTERISTICS
SQUARE WAVE
DC
SINE WAVE
DC
DC
180°
120°
90°
60°
30°
0
200
400
600
800
1000
1200
0 50 100 150 200 250 300 350 400
Mean Forward Current [A]
Power Dissipation [W]
ANSALDO
180°
120°
90°
60°
30°
0
100
200
300
400
500
600
700
800
900
1000
0 50 100 150 200 250 300 350 400
Mean Forward Current [A]
Power Dissipation [W]
ARF240 FAST RECOVERY DIODE
FINAL SPECIFICATION feb 97 - ISSUE : 04
SWITCHING CHARACTERISTICS
ANSALDO
REVERSE RECOVERY CHARGE
Tj = 150 °C
0
20
40
60
80
100
120
140
160
180
0 100 200 300 400
di/dt [A/µs]
Qrr [µC]
250 A
REVERSE RECOVERY CURRENT
Tj = 150 °C
0
50
100
150
200
250
300
0 100 200 300 400
di/dt [A/µs]
Irr [A]
250 A
FORWARD RECOVERY VOLTAGE
0
10
20
30
40
50
60
0 200 400 600 800 1000 1200
di/dt [A/µs]
VFR [V]
Tj = 150 °C
I
F
VFR
VF
ta
ta = Irr / (di/dt) tb = trr - ta
Softness (s factor) s = tb / ta
Energy dissipation during recovery Er = Vr · (Qrr - Irr ·ta / 2 ) Irr Vr
tb
IFd i/d t
ARF240 FAST RECOVERY DIODE
FINAL SPECIFICATION feb 97 - ISSUE : 04
Distributed by
FORWARD CHARACTERISTIC
Tj = 150 °C
0
100
200
300
400
500
600
700
800
900
0.6 1.6 2.6 3.6 4.6
Forward Voltage [V]
Forward Current [A]
TRANSIENT THERMAL IMPEDANCE
DOUBLE SIDE COOLED
0.0
10.0
20.0
30.0
40.0
50.0
60.0
70.0
80.0
90.0
100.0
0.001 0.01 0.1 1 10 100
t[s]
Zth j-h [°C/kW]
SURGE CHARACTERISTIC
Tj = 150 °C
0
0.5
1
1.5
2
2.5
3
1 10 100
n° cycles
ITSM [kA]
ANSALDO
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 µm.
In the interest of product improvement ANSALDO 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.
