Document
RURD4120, RURD4120S
Data Sheet January 2000 File Number 3641.3
4A, 1200V Ultrafast Diodes
The RURD4120 and RURD4120S are ultrafast diodes with soft recovery characteristics (trr < 70ns). They have low 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.
Features
• Ultrafast with Soft Recovery . . . . . . . . . . . . . . . . . . . <70ns • Operating Temperature. . . . . . . . . . . . . . . . . . . . . . .175oC • Reverse Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . .1200V • Avalanche Energy Rated • Planar Construction
Applications
• Switching Power Supplies • Power Switching Circuits • General Purpose
Ordering Information
PART NUMBER RURD4120 RURD4120S PACKAGE TO-251 TO-252 BRAND UR4120 UR4120
Packaging
JEDEC STYLE TO-251
ANODE CATHODE CATHODE (FLANGE)
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.
Symbol
K
JEDEC STYLE TO-252
CATHODE (FLANGE) A CATHODE ANODE
Absolute Maximum Ratings
TC = 25oC, Unless Otherwise Specified RURD4120, RURD4120S UNITS V V V A A A W mJ
oC
Peak Repetitive Reverse Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . VRRM Working Peak Reverse Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . VRWM DC Blocking Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . VR Average Rectified Forward Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . IF(AV) (TC = 152oC) Repetitive Peak Surge Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . IFRM (Square Wave, 20kHz) Nonrepetitive Peak Surge Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . IFSM (Halfwave, 1 Phase, 60Hz) Maximum Power Dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . PD Avalanche Energy (See Figures 10 and 11). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . EAVL Operating and Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TSTG, TJ
1200 1200 1200 4 8 40 50 10 -65 to 175
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RURD4120, RURD4120S
Electrical Specifications
SYMBOL VF IF = 4A IF = 4A, TC = 150oC IR VR = 1200V VR = 1200V, TC = 150oC trr IF = 1A, dIF /dt = 200A/µs IF = 4A, dIF /dt = 200A/µs ta tb QRR CJ RθJC DEFINITIONS VF = Instantaneous forward voltage (pw = 300µs, D = 2%). IR = Instantaneous reverse current. trr = Reverse recovery time (See Figure 9), summation of ta + tb . ta = Time to reach peak reverse current (See Figure 9). tb = Time from peak IRM to projected zero crossing of IRM based on a straight line from peak IRM through 25% of IRM (See Figure 9). QRR = Reverse recovery time. CJ = Junction capacitance. RθJC = Thermal resistance junction to case. pw = Pulse width. D = Duty cycle. IF = 4A, dIF /dt = 200A/µs IF = 4A, dIF /dt = 200A/µs IF = 4A, dIF /dt = 200A/µs VR = 10V, IF = 0A TC = 25oC, Unless Otherwise Specified TEST CONDITION MIN TYP 40 28 335 15 MAX 2.1 1.9 100 500 70 90 3 UNITS V V µA µA ns ns ns ns nC pF
oC/W
Typical Performance Curves
20 IR , REVERSE CURRENT (µA) 100 175oC 10 100oC
IF, FORWARD CURRENT (A)
10
1
175oC 100oC 1
25oC
0.1
0.01 25oC
0.5 0 0.5 1 1.5 2 2.5 3 VF, FORWARD VOLTAGE (V)
0.001
0
200
400
600
800
1000
1200
VR , REVERSE VOLTAGE (V)
FIGURE 1. FORWARD CURRENT vs FORWARD VOLTAGE
FIGURE 2. REVERSE CURRENT vs REVERSE VOLTAGE
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RURD4120, RURD4120S Typical Performance Curves
75
(Continued)
TC = 25oC, dIF/dt = 200A/µs t, RECOVERY TIMES (ns)
100 TC = 100oC, dIF/dt = 200A/µs 80
t, RECOVERY TIMES (ns)
60
trr
45
trr
60
30
ta tb
40
ta tb
15
20
0 0.5
1 IF, FORWARD CURRENT (A)
4
0 0.5
1 IF, FORWARD CURRENT (A)
4
FIGURE 3. trr, ta AND tb CURVES vs FORWARD CURRENT
FIGURE 4. trr, ta AND tb CURVES vs FORWARD CURRENT
IF(AV) , AVERAGE FORWARD CURRENT (A)
125 TC = 175oC, dIF/dt = 200A/µs t, RECOVERY TIMES (ns) 100
5
4 DC 3 SQ. WAVE 2
trr
75
50
ta tb
25
1
0 0.5
0
125 135 145 155 165 175 TC , CASE TEMPERATURE (oC)
1 IF, FORWARD CURRENT (A)
4
FIGURE 5. trr, ta AND tb CURVES vs FORWARD CURRENT
FIGURE 6. CURRENT DERATING CURVE
75 CJ , JUNCTION CAPACITANCE (pF)
60
45
30
15
0
0
50
100
150
200
VR , REVERSE VOLTAGE (V)
FIGURE 7. JUNCTION CAPACITANCE vs REVERSE VOLTAGE
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RURD4120, RURD4120S Test Circuits and Wa.