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MDF(R)250A

MDF

（R）

250A is a diode with flat mounting base which is designed for use in various

rectifier applications.

●

●

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

Unit

：a

Symbol

Item

Ratings

MDF(R)200A30

MDF(R)200A40

MDF(R)200A50

300

400

500

360

240

480

320

600

400

Unit

Repetitive Peak Reverse Voltage

Non-Repetitive Peak Reverse Voltage

D.C. Reverse Voltage

V

V

V

Symbol

Item

Average Forward Current

Conditions

Ratings

Unit

A

Single phase, half wave, 180

。conduction, Tc：92℃

250

R.M.S. Forward Current

Surge Forward Current

Single phase, half wave, 180

。conduction, Tc：92℃

1

390

4000/4500

A

A

Value for one cycle of surge current

84000

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）

g

170

■Electrical Characteristics

Symbol

Item

Repetitive Peak Reverse Current, max.

Conditions

＝150℃

Ratings

15

1.15

0.2

Unit

mA

Forward Voltage Drop, max.

Foward current 800A, Tj

＝25℃, Inst. measurement

V

Rth

（j-c） Thermal Impedance, max.

Junction to case

℃/W

MDR

MDF

■Maximum Ratings

（Tj＝25℃ unless otherwise specified）

SanRex

®