1

File Number

3641.3

1-888-INTERSIL or 321-724-7143

RURD4120, RURD4120S

4A, 1200V Ultrafast Diodes

The RURD4120 and RURD4120S are ultrafast diodes with

forward voltage drop and are silicon nitride passivated

ion-implanted epitaxial planar construction.

These devices are intended for use as freewheeling/

clamping diodes and rectifiers in a variety of switching power

supplies and other power switching applications. Their low

stored charge and ultrafast soft recovery minimize ringing

and electrical noise in many power switching circuits

reducing power loss in the switching transistors.

Formerly developmental type TA49036.

Symbol

Features

• Ultrafast with Soft Recovery . . . . . . . . . . . . . . . . . . . <70ns

• Reverse Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . .1200V

• Avalanche Energy Rated

• Planar Construction

Applications

• Switching Power Supplies

• Power Switching Circuits

• General Purpose

Packaging

JEDEC STYLE TO-251

JEDEC STYLE TO-252

Ordering Information

PART NUMBER

PACKAGE

BRAND

RURD4120

TO-251

UR4120

RURD4120S

TO-252

UR4120

NOTE: When ordering, use the entire part number. Add the suffix 9A

to obtain the TO-252 variant in the tape and reel, i.e.,

RURD4120S9A.

K

A

ANODE

CATHODE

CATHODE

(FLANGE)

ANODE

CATHODE

CATHODE

(FLANGE)

RURD4120, RURD4120S

UNITS

1200

V

1200

V

1200

V

4A

(Square Wave, 20kHz)

8A

(Halfwave, 1 Phase, 60Hz)

40

A

50

W

10

mJ

-65 to 175

Data Sheet

January 2000