50 Seaview Blvd. Port Washington, NY 11050-4618 PH.(516)625-1313 FAX(516)625-8845 E-mail: semi@sanrex.com
MDF(R)250A
DIODE(NON-ISOLATED TYPE)
MDF（R）250A is a diode with flat mounting base which is designed for use in various
rectifier applications.
●IF（AV）＝250A, VRRM＝500V
●Easy Construction with Anode（F）Type and Cathode（R）type.
●High reliability by glass passivation
（Applications）
Various Rectifiers
Welding Power Supply
4-φ7
45±0.4
62
24
46
φ8 . 5
8
19
4
42max
32
2
62
45±0.4
Unit：a
Symbol Item Ratings
MDF(R)200A30 MDF(R)200A40 MDF(R)200A50
300 400 500
360
240 480
320 600
400
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：92℃
250
IF（RMS）
IFSM
R.M.S. Forward Current
Surge Forward Current
Single phase, half wave, 180︒conduction, Tc：92℃
1／2cycle, 50Hz/60Hz, peak value, non-repetitive 390
4000/4500 A
A
I2tI2tValue for one cycle of surge current 84000 A2S
Tj Junction Temperature −30 to ＋150 ℃
Tstg Storage Temperature −30 to ＋125 ℃
Mounting
Torque
Mounting
（M6）
Terminal
（M8）
Mass
Recommended Value 2.5-3.9（25-40）
Recommended Value 8.8-10 （90-105）
4.7（48）
11（115）
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
15
1.15
0.2
Unit
mA
VFM Forward Voltage Drop, max.
Foward current 800A, Tj＝25℃, Inst. measurement
V
Rth（j-c）Thermal Impedance, max. Junction to case ℃/W
MDRMDF
■Maximum Ratings （Tj＝25℃unless otherwise specified）
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50 Seaview Blvd. Port Washington, NY 11050-4618 PH.(516)625-1313 FAX(516)625-8845 E-mail: semi@sanrex.com
MDF(R)250A
MaximumForwardCharacteristics
５
５
５
２
２
０ １．０ ２．０
ForwardVoltageDrop（V）
１０３
１０３
ForwardCurrent（A）
AverageForwardCurrentvs.
PowerDissipation
１００
５００
２００
４００
３００
０ ４００ ３００ ２００ １００
AverageForwardCurrent（A）
PowerDissipationPav（W）
ThreePhase
SinglePhase
D.C.
１６０
１４０
１２０
１００
０
８０
６０
３００ １００ ２００
AverageForwardCurrentvs.
AllowableCaseTemperature
AverageForwardCurrent（A）
AllowableCaseTemperatureTc（℃）
ThreePhase SinglePhase D.C.
CycleSurgeForwardCurrentRating
（Non-Repetitive）
Time（Cycles）
２０００
４０００
３０００
５０００
４５００
３５００
２５００
０ ５ １０２１ ２０ ５０ １００
SurgeForwardCurrent（A）
60Hz
Tj＝25℃ start
０．１
０．２
０．３
０．４
TransientThermalImpedance
Timet（sec）
２ ５５ ２ ２ ５５２１０ -３ １０ -２ １００ １０１
１０ -１
TransientThermalImpedanceθj-c（℃/W）
Junctiontocase
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