Description
Features
Mechanical Dimensions
Electrical Characteristics @ 25
o
C.
Maximum Ratings
Peak Repetitive Reverse Voltage...V
RRM
RMS Reverse Voltage...V
R(rms)
DC Blocking Voltage...V
DC
UFS21 . . . 26 Series
Average Forward Rectified Current...I
F(av)
T
A
= 55
C
Non-Repetitive Peak Forward Surge Current...I
FSM
@ Rated Current & Temp
Forward Voltage @ 2.0A...V
F
DC Reverse Current...I
R
T
A
= 25
C
@ Rated DC Blocking Voltage
T
A
=150
C
Typical Junction Capacitance...C
J
(Note 1)
Typical Reverse Recovery Time...t
RR
(Note 2)
Operating & Storage Temperature Range...T
J
, T
STRG
Page 10-6
UFS21 . . . 26 Series
UFS21
UFS22
UFS24
UFS26
100
200
400
600
7 0
140
280
420
100
200
400
600
Data Sheet
2.0 Amp SMD SUPER FAST
RECTIFIERS
Units
Volts
Volts
Volts
Amps
Amps
Volts
Amps
Amps
pF
nS
C
n HIGH CURRENT CAPABILITY
n MEETS UL SPECIFICATION 94V-0
n HIGH SURGE CAPABILITY
n LOW FORWARD VOLTAGE DROP
............................................. 2.0 ...............................................
............................................. 5 0 ...............................................
............................................. .95 ...............................................
............................................. 2.0 ...............................................
............................................. 5 0 ...............................................
............................................. 7 0 ...............................................
............................................. 3 5 ...............................................
......................................... -65 to 150 ..........................................
4.06/4.60
.01/.20
1.91/2.41
1.90/2.15
1.65/2.19
5.10/5/58
.11/.30
3.30/3.90
Package
SMB
Cathode
Data Sheet
2.0 Amp SMD SUPER FAST
RECTIFIERS
UFS21 . . . 26 Series
Page 10-7
Ratings at
25 Deg. C ambient
temperature
unless otherwise
specified.
Single Phase Half
Wave, 60 HZ
Resistive or
Inductive Load.
For Capacitive
Load, Derate
Current by 20%.
NOTES: 1. Measured @ 1 MHZ and applied reverse voltage of 4.0V.
2. Conditions: I
F
= 0.5A, I
R
= 1.0A, I
RR
= 0.25A.
pF
Reverse Voltage (Volts)
Typical Junction Capacitance
Amps
Non-Repetitive
Peak Forward Surge Current
Number of Cycles @ 60 HZ
Reverse Recovery
Characteristics
Typical Instantaneous Forward Characteristics
Oscilliscope
Note 1
Pulse
Generator
Note 2
(-)
(+)
Notes:
1. Rise Time = 7 nS Max.
Impedance = 1 megohm, 22 pF
2. Rise Time = 10 nS Max.
Source Impedance = 50 Ohms
Time Base Set @ 50/100nS/cm
+.5A
0A
-.25A
-1.0A
1 cm
Typical Reverse Characteristics
Amps
t
RR
Amps
Volts
50
(-)
(+)
25 VDC
Non-Inductive
1
Non-
Inductive
D.U.T 10
Percent of Rated Peak Voltage
Forward Current Derating Curve
T
A
= Ambient Temperature (
C)
Amps
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