UNISONIC TECHNOLOGIES CO., LTD
BAS21
Preliminary
DIODE
GENERAL PURPOSE DIODES
DESCRIPTION
The UTC
BAS21
is a general purpose diode using UTC’s planar
technology to provide customers with high current capacity and high
switching speed.
FEATURES
* High Current Capability
* High Switching Speed
SYMBOL
ORDERING INFORMATION
Ordering Number
Lead Free
Halogen Free
BAS21L-AE3-R
BAS21G-AE3-R
Note: Pin Assignment: A: Anode K: Cathode
x: NC
Package
SOT-23
Pin Assignment
1
2
3
x
A
K
Packing
Tape Reel
MARKING
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Copyright © 2011 Unisonic Technologies Co., Ltd
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QW-R601-040.a
BAS21
ABSOLUTE MAXIMUM RATINGS
Preliminary
DIODE
PARAMETER
SYMBOL
RATINGS
UNIT
Repetitive Peak Reverse Voltage
V
RRM
250
V
Continuous Reverse Voltage
V
R
200
V
Continuous Forward Current (Note 1)
I
F
200
mA
Repetitive Peak Forward Current
I
FRM
625
mA
t=1µs
9
A
Non-Repetitive Peak Forward
Current (Square Wave,
I
FSM
t=100µs
3
A
T
J
=25 °C Prior to Surge)
1.7
A
t=10ms
Power Dissipation (T
A
=25°C) (Note 1)
P
D
250
mW
Junction Temperature
T
J
150
°C
Storage Temperature
T
STG
-65~+150
°C
Note: Absolute maximum ratings are those values beyond which the device could be permanently damaged.
Absolute maximum ratings are stress ratings only and functional device operation is not implied.
THERMAL CHARACTERISTICS
PARAMETER
SYMBOL
Junction to Ambient (Note 1)
θ
JA
Note: 1. Device mounted on an FR4 printed-circuit board.
RATINGS
330
UNIT
K/W
ELECTRICAL CHARACTERISTICS
(T
J
=25°C, unless otherwise specified.)
PARAMETER
Forward Voltage
Reverse Current
Diode Capacitance
Reverse Recovery Time
SYMBOL
V
F
I
R
C
D
T
RR
TEST CONDITIONS
I
F
=100mA
I
F
=200mA
V
R
=200V
V
R
=200V, T
J
=150°C
f=1MHz, V
R
=0
when switched from I
F
=30mA to I
R
=30mA,
R
L
=100Ω, measured at I
R
=3mA
MIN
TYP
MAX
1
1.25
100
100
5
50
UNIT
V
V
nA
μA
pF
ns
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
2 of 3
QW-R601-040.a
BAS21
Preliminary
DIODE
TEST CIRCUITS AND WAVEFOMS
D.U.T.
R
S
=50Ω
I
F
V=V
R
+I
F
×R
S
SAMPLING
OSCILLOSCOPE
R
i
=50Ω
Reverse recovery voltage test circuit
t
r
t
p
t
10%
+ I
F
t
rr
t
90%
V
R
input signal
Reverse recovery voltage waveforms
output signal
(I
R
=3mA)
UTC assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or
other parameters) listed in products specifications of any and all UTC products described or contained
herein. UTC products are not designed for use in life support appliances, devices or systems where
malfunction of these products can be reasonably expected to result in personal injury. Reproduction in
whole or in part is prohibited without the prior written consent of the copyright owner. The information
presented in this document does not form part of any quotation or contract, is believed to be accurate
and reliable and may be changed without notice.
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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QW-R601-040.a
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