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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 150oC 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 VR (V) BAS19 BAS20 BAS21 JP JR JS
o
Repetitive Peak Reverse Voltage VRRM (V) 120 200 250
G
C
B
F
E
100 150 200
H
J
K DIMENSIONS
Maximum Ratings @ 25 C Unless Otherwise Specified Parameter Symbol Value Non-repetitive @ t=1us 2.5 IFSM Peak Reverse Voltage @ t=1s 0.5 IF(AV) Average Rectified Forward Current 200(1) IF Forward DC Current at Tamb=25oC 200(2) IFRM Repetitive Peak Forward Current 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
Ptot 250 mW Power Dissipation up to Tamb=25oC Thermal Resistance Junction to RqJA 430 oC/W Ambient Operating & Storage Temperature Tj, TSTG -65~150 oC
Notes: (1) Measured under pulse conditions;
Pulse time = tp <= 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) (TJ = 25C unless otherwise noted)
Symbol VF IR rf Ctot trr
Test Condition IF = 100mA IF = 200mA VR = VRmax VR = VRmax; Tj = 150C IF = 10mA VR = 0 f = 1MHz IF = 30mA, IR = 30mA Irr = 3mA, RL = 100
Min -- -- -- -- -- -- --
Typ -- -- -- -- 5 -- --
Max 1.0 1.25 100 100 -- 5 50
Unit V V nA A pF ns
(1)Device on fiberglass substrate, see layout (SOT-23).
Test Circuit and Waveforms (BAS19, BAS20, BAS21)
Test circuit
Input Signal total pulse duration duty factor rise time of reverse pulse reverse pulse duration tp(tot) = 2s = 0.0025 tr = 0.6ns tp = 100ns tr = 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 RJA 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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