Dated : 26/04/2006 C
R
SEMTECH ELECTRONICS LTD.
(Subsidiary of Semtech International Holdings Limited, a company
listed on the Hong Kong Stock Exchange, Stock Code: 724)
UG4A THRU UG4D
ULTRAFAST EFFICIENT PLASTIC RECTIFIER
Reverse Voltage – 50 to 200 V
Forward Current – 4 A
Features
• Ultrafast recovery time for high efficiency
• Soft recovery characteristics
• Excellent high temperature switching
• Glass passivated junction
Mechanical Data
• Case: Molded plastic, DO-201AD
• Terminals: Plated axial leads, solderable per
MIL-STD-750, method 2026
• Polarity: Color band denotes cathode end
• Mounting position: Any
Absolute Maximum Ratings and Characteristics
Ratings at 25 OC ambient temperature unless otherwise specified.
Parameter
Symbols
UG4A
UG4B
UG4C
UG4D
Units
Maximum Repetitive Peak Reverse Voltage
VRRM
50
100
150
200
V
Maximum RMS Voltage
VRMS
35
70
105
140
V
Maximum DC Blocking Voltage
VDC
50
100
150
200
V
Maximum Average Forward Rectified Current
0.375"(9.5 mm) Lead Length at TL = 75 OC
I(AV)
4
A
Peak Forward Surge Current, 8.3 ms Single Half-sine-wave
Superimposed on rated load (JEDEC method) at TL = 75 OC
IFSM
150
A
Maximum Forward Voltage at 4 A
VF
0.95
V
Maximum Reverse Current
TA = 25 OC
at Rated DC Blocking Voltage
TA = 100 OC
IR
5
300
µA
Maximum Reverse Recovery Time
1)
trr
20
ns
Maximum Reverse Recovery Time
2)
TJ = 25 OC
TJ = 100 OC
trr
30
50
ns
Maximum Recovered stored charge Time
2)
TJ = 25 OC
TJ = 100 OC
Qrr
15
30
nC
Typical Junction Capacitance
3)
CJ
20
pF
Typical Thermal Resistance
4)
RθJA
25
O
C/W
Operating Junction and Storage Temperature Range
TJ, Tstg
-55 to +150
O
C
1) Reverse recovery test conditions: I
F = 0.5 A, IR = 1 A, Irr = 0.25 A.
2) t
rr and Qrr measured at tester: IF = 4 A, VR = 30 V, di/dt = 50 A/µs, Irr = 10% IRM for measurement of trr.
3) Measured at 1 MHz and applied reverse voltage of 4 V.
4) Thermal resistance from junction to ambient at 0.375" (9.5 mm) lead length.
Dimensions in inches and (millimeters)
DO-201AD
0.052(1.32)
0.048(1.22)
0.210(5.3)
0.190(4.8)
1.0 (25.4) MIN.
0.375(9.5)
0.285(7.2)
1.0 (25.4) MIN.
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