DWF(R)70A30/40
DIODE MODULE
DWF（R）70A is a non-isolated diode module designed for 3 phase rectification.
●IF（AV）
＝70A, VRRM＝400V
●Easy Construction with Joint-Cathode（F）Type and Joint-Anode（R）type.
●Non-isolated.（Mounting Base as terminals.）
●High Surge Capability
（Applications）
Welding Power Supply
3 Phase Rectifier
80±0.2
M5X10
92
20
25
12.5
12
2020
2- 6
6.5
19.5 4.0
31max
Unit：a
■Maximum Ratings （Tj＝25℃ unlessotherwisespecified）
Symbol Item Ratings
DWF(R)70A30 DWF(R)70A40
300 400
360 480
240 320
Unit
VRRM
VRSM
VR（DC）
Repetitive Peak Reverse Voltage
Non-Repetitive Peak Reverse Voltage
D.C. Reverse Voltage
V
V
V
Symbol Item
Average Forward Current
Conditions Ratings Unit
AIF（AV）
Single phase, half wave, 180︒conduction, Tc：119℃
70
IF（RMS）
IFSM
R.M.S. Forward Current
Surge Forward Current
Single phase, half wave, 180︒conduction, Tc：119℃
1
／
2cycle, 60Hz, peak value, non-repetitive
110
1400
A
A
I2tI2t Value for one cycle of surge current 8100 A2S
Tj
Operating Junction Temperature
−30 to ＋150 ℃
Tstg Storage Temperature −30 to ＋125 ℃
Mounting
Torque
Mounting
（M5）
Terminal
（M5）
Mass
Recommended Value 1.5-2.5（15-25）
Recommended Value 1.5-2.5（15-25）
2.7（48）
2.7（48）
N･m
（㎏f･B）
g170
■Electrical Characteristics
Symbol
IRRM
Item
Repetitive Peak Reverse Current, max.
Conditions
at VDRM, single phase, half wave, Tj＝150℃
Ratings
12
1.15
0.40
Unit
mA
VFM Forward Voltage Drop, max.
Forward current 220A, Tj＝25℃, Inst. measurement
V
Rth（j-c）Thermal Impedance, max. Junction to case ℃/W
DWF
DWR
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DWF(R)70A30/40
MaximumForwardCharacteristics
ForwardVoltageDropVF（V）
５
５
２
２
２
１．０ １．５ ２．０
１０
３
１０
２
ForwardCurrentIF（A）
AverageForwardCurrentvs.
PowerDissipation
AverageForwardCurrent（A）
１０
０
２０
３０
４０
５０
６０
8０
7０
０ １０ ２０ ３０ ４０ ５０ ６０ 7０ 8０
PowerDissipationPav（W）
SixPhase
ThreePhase
Single
Phase
Peroneelement
AverageForwardCurrent（A）
AverageForwardCurrentvs.
AllowableCaseTemperature
１５０
１２５
０
０
１００
３０ ４０ ５０ ６０ ７０ ８０１０ ２０
AllowableCaseTemperatureTc（℃）
ThreePhaseSixPhase
Peroneelement
SinglePhase
CycleSurgeForwardCurrentRating
（Non-Repetitive）
Time（Cycles）
５００
１5００
１０００
５ １０２０ ２０ ５０ １００
SurgeForwardCurrentIF（A）
60Hz
Peroneelement
Tj＝25℃start
０．５
０．１
０
０．２
０．３
０．４
TransientThermalImpedance（max）
Timet（sec）
２２
２ ５
５ ２５
５ ５
２
１０
−
1１０
０
１０
−
３
１０
１
１０
−
２
２５
１０
−
１
TransientThermalImpedanceθj-c（℃/W）
JunctiontoCase 50ms〜20sec
0.5ms〜200ms
Peroneelement
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