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DIOTEC ELECTRONICS CORP.
18020 Hobart Blvd., Unit B Gardena, CA 90248 U.S.A Tel.: (310) 767-1052 Fax: (310) 767-7958
Data Sheet No. SESA-401-1C
4 AMP ULTRAFAST RECOVERY DIODES
FEATURES MECHANICAL SPECIFICATION
R
ACTUAL SIZE OF DO-27 PACKAGE
PROPRIETARY SOFT GLASS JUNCTION PASSIVATION FOR SUPERIOR RELIABILITY AND PERFORMANCE VOID FREE VACUUM DIE SOLDERING FOR MAXIMUM MECHANICAL STRENGTH AND HEAT DISSIPATION (Solder Voids: Typical < 2%, Max. < 10% of Die Area) LOW SWITCHING NOISE LOW THERMAL RESISTANCE HIGH SWITCHING CAPABILITY LOW FORWARD VOLTAGE DROP
MECHANICAL DATA
SERIES UFR400 - UFR410
DO - 27
LL BD (Dia)
BL Color Band Denotes Cathode
LL
Case: JEDEC DO-27 molded epoxy (U/L Flammability Rating 94V-0) Terminals: Plated axial leads
LD (Dia)
Solderability: Per MIL-STD 202 Method 208 guaranteed Polarity: Color band denotes cathode Mounting Position: Any Weight: 0.04 Ounces (1.12 Grams)
S RoH
N LIA MP CO
T
Sym BL BD LL LD
Minimum In mm
Maximum In mm 9.28 0.365 0.205 5.2 1.3
1.00 0.048
25.4 1.2
0.052
MAXIMUM RATINGS & ELECTRICAL CHARACTERISTICS Ratings at 25 C ambient temperature unless otherwise specified. Single phase, half wave, 60Hz, resistive or inductive load. For capacitive loads, derate current by 20%.
PARAMETER (TEST CONDITIONS)
Series Number Maximum DC Blocking Voltage Maximum RMS Voltage Maximum Peak Recurrent Reverse Voltage Average Forward Rectified Current @ TA = (as shown) Peak Forward Surge Current ( 8.3mS single half sine wave superimposed on rated load) 3-Amps DC Maximum Forward Voltage at: 4-Amps DC Maximum Average DC Reverse Current At Rated DC Blocking Voltage Typical Thermal Resistance: Typical Junction Capacitance (Note 1) Maximum Reverse Recovery Time (IF=0.5A, I R=1A, I RR=0.25A) Junction Operating and Storage Temperature Range
NOTES: (1) Measured at 1MHz and an applied reverse voltage of 4 volts.
SYMBOL
RATINGS
UFR UFR UFR UFR UFR UFR UFR UFR UFR 400 401 402 403 404 406 408 409 410
UNITS
VRM VRMS VRRM IO IFSM VFM IRM RGJL RGJA CJ TRR TJ, TSTG
50 35 50
100 200 300 70 140 210 100 200 300 4 o @TA=80 C
400 400
600 600
800 900 1000 560 630 4o @TA=55 C 700 VOLTS 800 900 1000 AMPS
280 420
200 1.20 1.25 5 50 7.5 18.0 45 50 60 -65 to +175 75 1.70 1.85 10 50 VOLTS
@ TJ = 25 C o @ TJ = 125 C Junction to Lead Junction to Air
o
mA
C/W pF nSec C
3.01 UFR400
C11
DIOTEC ELECTRONICS CORP.
18020 Hobart Blvd., Unit B Gardena, CA 90248 U.S.A Tel.: (310) 767-1052 Fax: (310) 767-7958
Data Sheet No. SESA-401-2C
4 AMP ULTRAFAST RECOVERY DIODES
RATING & CHARACTERISTIC CURVES FOR SERIES UFR400 - UFR410
250
Resistive and Inductive Loads
200 UFR400-404
150
100
UFR406-410
NOTE 1
50
NOTE 2
0 1 10 100
Ambient Temperature, C
FIGURE 1. FORWARD CURRENT DERATING CURVE
o
Number of Cycles at 60 Hz
FIGURE 2. MAXIMUM NON-REPETITIVE SURGE CURRENT
100
(1) UFR400-404 (2) UFR406-410 T
J = 175
(2)
o
C
10
T
J = 175
(1)
o
C
(2) (1)
1.0
T
J = 25
(2)
o
C
0.1
NOTE 4
T
J = 25
(1)
o
C (1) UFR400-404 (2) UFR406-410
NOTE 3
0.01 0.4
0.6 0.8 1.0 1.2 1.4 1.6 1.8
0 20 40 60 80 100 120 140
Instantaneous Forward Voltage (Volts)
FIGURE 3. TYPICAL FORWARD CHARACTERISTICS
100
Percent of Rated Peak Reverse Voltage
FIGURE 4. TYPICAL REVERSE CHARACTERISTICS
NOTES
(1) Lead Length = 0.375" (9.5mm)
(2) (1) 10
(2) JEDEC Method, 8.3 mSec. Single Half Sine Wave (3) TJ = 25 C, Pulse Width = 300 mSec, 2.0% Duty Cycle
o
(1) UFR400-404 (2) UFR406-410
(4) These Curves Are Typical For The Highest Voltage Diode in The Voltage Grouping.
0
10
20
30
40
50
Reverse Voltage, (Volts)
C12
FIGURE 5. TYPICAL JUNCTION CAPACITANCE
3.01 UFR400

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