Shanghai Lunsure Electronic
Technology Co.,Ltd
Tel:0086-21-37185008
Fax:0086-21-57152769
BAS19
THRU
BAS21
Small
Signal Diodes
250mW
SOT-23
A
D
Features
l
Ideally Suited for Automatic Insertion
l
150
o
C Junction Temperature
l
Fast Switching speed
l
Epitaxial Planar Die Construction
Mechanical Data
l
Case: SOT-23, Molded Plastic
l
Weight: 0.008 grams ( approx.)
l
Marking Code
Continuous
Reverse
Part
Marking
Voltage
Number
V
R
(V)
BAS19
BAS20
BAS21
JP
JR
JS
100
150
200
Repetitive
Peak
Reverse
Voltage
V
RRM
(V)
120
200
250
G
C
B
F
E
H
J
K
DIMENSIONS
Maximum Ratings @ 25
o
C Unless Otherwise Specified
Parameter
Symbol Value
Non-repetitive
@ t=1us
2.5
I
FSM
Peak Reverse Voltage
@ t=1s
0.5
I
F(AV)
Average Rectified Forward Current
200
(1)
I
F
Forward DC Current at T
amb
=25
o
C
200
(2)
Repetitive Peak Forward Current
I
FRM
625
Unit
A
mA
mA
mA
DIM
A
B
C
D
E
F
G
H
J
K
INCHES
MIN
.110
.083
.047
.035
.070
.018
.0005
.035
.003
.015
MAX
.120
.098
.055
.041
.081
.024
.0039
.044
.007
.020
MM
MIN
2.80
2.10
1.20
.89
1.78
.45
.013
.89
.085
.37
MAX
3.04
2.64
1.40
1.03
2.05
.60
.100
1.12
.180
.51
NOTE
Suggested Solder
Pad Layout
.031
.800
.035
.900
.079
2.000
inches
mm
P
tot
250
mW
Power Dissipation up to T
amb
=25
o
C
Thermal Resistance Junction to
R
q
JA
430
o
C/W
Ambient
Operating & Storage Temperature T
j
, T
STG
-65~150
o
C
Notes:
(1) Measured under pulse conditions;
Pulse time = t
p
<= 0.3ms
(2) Device on fiberglass substrate,
See layout on next page
.037
.950
.037
.950
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BAS19 thru BAS21
Electrical Characteristics
Parameter
Forward Voltage
Leakage Current
Dynamic Forward Resistance
Capacitance
Reverse Recovery Time
(see figures)
(T
J
= 25°C unless otherwise noted)
Symbol
V
F
I
R
r
f
C
tot
t
rr
Test Condition
I
F
= 100mA
I
F
= 200mA
V
R
= V
Rmax
V
R
= V
Rmax
; T
j
= 150°C
I
F
= 10mA
V
R
= 0
f = 1MHz
I
F
= 30mA, I
R =
30mA
I
rr
= 3mA, R
L
= 100Ω
Min
—
—
—
—
—
—
—
Typ
—
—
—
—
5
—
—
Max
1.0
1.25
100
100
—
5
50
Unit
V
V
nA
µA
Ω
pF
ns
(1)Device on fiberglass substrate, see layout (SOT-23).
Test Circuit and Waveforms
(BAS19, BAS20, BAS21)
Ω
Test circuit
Input Signal
-
-
-
-
total pulse duration
duty factor
rise time of reverse pulse
reverse pulse duration
tp(tot) = 2µs
δ
= 0.0025
t
r
= 0.6ns
t
p
= 100ns
t
r
= 0.35ns
C < 1pF
Input signal
Waveforms; IR = 3 mA
Oscilloscope - rise time
- cicuit capitance*
*C = oscilloscope input capactitance + parasitic capacitance
Output signal
Layout for R
ΘJA
test
Thickness: Fiberglass 0.059 in. (1.5 mm)
Copper leads 0.012 in. (0.3 mm)
0.30 (7.5)
0.12 (3)
.04 (1)
.08 (2)
.04 (1)
.08 (2)
0.59 (15)
0.47 (12)
0.03 (0.8)
0.2 (5)
Dimensions in inches (millimeters)
0.06 (1.5)
0.20 (5.1)
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