Semiconductor Components Industries, LLC, 2004
May, 2004 − Rev. 6 1Publication Order Number:
BAS19LT1/D
BAS19LT1, BAS20LT1,
BAS21LT1, BAS21DW5T1
Preferred Devices
High Voltage
Switching Diode
Device Marking:
BAS19LT1 = JP
BAS20LT1 = JR
BAS21LT1 = JS
BAS21DW5T1 = JS
Features
Pb−Free Package is Available
MAXIMUM RATINGS
Rating Symbol Value Unit
Continuous Reverse Voltage BAS19
BAS20
BAS21
VR120
200
250
Vdc
Repetitive Peak Reverse Voltage BAS19
BAS20
BAS21
VRRM 120
200
250
Vdc
Continuous Forward Current IF200 mAdc
Peak Forward Surge Current IFM(surge) 625 mAdc
Maximum Junction Temperature TJmax 150 °C
Power Dissipation (Note 4) PD385 mW
1. Mounted on FR−5 Board = 1.0 x 0.75 x 0.062 in.
Maximum ratings are those values beyond which device damage can occur.
Maximum ratings applied to the device are individual stress limit values (not
normal operating conditions) and are not valid simultaneously. If these limits are
exceeded, device functional operation is not implied, damage may occur and
reliability may be affected.
HIGH VOLTAGE
SWITCHING DIODE
Preferred devices are recommended choices for future use
and best overall value.
5
CATHODE
1
ANODE
Jx M
MARKING DIAGRAMS
Jx = Specific Device Code
x = P, R or S
M = Date Code
http://onsemi.com
3
CATHODE
1
ANODE
4
CATHODE
3
ANODE
XXd
XX= Specific Device Code
d= Date Code
SOT−23 (TO−236)
CASE 318
STYLE 8
SC−88A (SOT−353)
CASE 419A
SOT−23
SC−88A
Device Package Shipping
ORDERING INFORMATION
BAS19LT1 SOT−23 3000 / Tape & Reel
BAS19LT3 SOT−23
BAS21LT1G SOT−23
(Pb−Free)
BAS21LT3 SOT−23
BAS20LT1 SOT−23
BAS21LT1 SOT−23
BAS21DW5T1 SC−88A
10000 / Tape & Reel
3000 / Tape & Reel
3000 / Tape & Reel
3000 / Tape & Reel
10000 / Tape & Reel
3000 / Tape & Reel
For information on tape and reel specifications,
including part orientation and tape sizes, please
refer to our Tape and Reel Packaging Specifications
Brochure, BRD8011/D.
BAS19LT1, BAS20LT1, BAS21LT1, BAS21DW5T1
http://onsemi.com
2
THERMAL CHARACTERISTICS (SOT−23)
Characteristic Symbol Max Unit
Total Device Dissipation FR−5 Board
(Note 2)
TA = 25°C
Derate above 25°C
PD225
1.8
mW
mW/°C
Thermal Resistance
Junction−to−Ambient (SOT−23) RJA 556 °C/W
Total Device Dissipation Alumina Substrate
(Note 3)
TA = 25°C
Derate above 25°C
PD300
2.4
mW
mW/°C
Thermal Resistance Junction−to−Ambient RJA 417 °C/W
Junction and Storage
Temperature Range TJ, Tstg −55 to +150 °C
THERMAL CHARACTERISTICS (SC−88A)
Characteristic Symbol Max Unit
Power Dissipation (Note 4) PD385 mW
Thermal Resistance −
Junction−to−Ambient
Derate Above 25°C
RJA 328
3.0 °C/W
mW/°C
Maximum Junction Temperature TJmax 150 °C
Operating Junction and Storage Temperature Range TJ, Tstg −55 to +150 °C
2. FR−5 = 1.0 0.75 0.062 in.
3. Alumina = 0.4 0.3 0.024 in. 99.5% alumina.
4. Mounted on FR−5 Board = 1.0 x 0.75 x 0.062 in.
ELECTRICAL CHARACTERISTICS (TA = 25°C unless otherwise noted)
Characteristic Symbol Min Max Unit
Reverse Voltage Leakage Current
(VR = 100 Vdc) BAS19
(VR = 150 Vdc) BAS20
(VR = 200 Vdc) BAS21
(VR = 100 Vdc, TJ = 150°C) BAS19
(VR = 150 Vdc, TJ = 150°C) BAS20
(VR = 200 Vdc, TJ = 150°C) BAS21
IR
0.1
0.1
0.1
100
100
100
Adc
Reverse Breakdown Voltage
(IBR = 100 Adc) BAS19
(IBR = 100 Adc) BAS20
(IBR = 100 Adc) BAS21
V(BR) 120
200
250
Vdc
Forward Voltage
(IF = 100 mAdc)
(IF = 200 mAdc)
VF
1.0
1.25
Vdc
Diode Capacitance (VR = 0, f = 1.0 MHz) CD 5.0 pF
Reverse Recovery Time (IF = IR = 30 mAdc, IR(REC) = 3.0 mAdc, RL = 100) trr 50 ns
BAS19LT1, BAS20LT1, BAS21LT1, BAS21DW5T1
http://onsemi.com
3
Notes: 1. A 2.0 k variable resistor adjusted for a Forward Current (IF) of 30 mA.
Notes: 2. Input pulse is adjusted so IR(peak) is equal to 30 mA.
Notes: 3. tp » trr
+10 V 2.0 k
820
0.1 F
D.U.T.
VR
100 H
0.1 F
50 OUTPUT
PULSE
GENERATOR
50 INPUT
SAMPLING
OSCILLOSCOPE
trtpt
10%
90%
IF
IR
trr t
IR(REC) = 3.0 mA
OUTPUT PULSE
(IF = IR = 30 mA; MEASURED
at IR(REC) = 3.0 mA)
IF
INPUT SIGNAL
Figure 1. Recovery Time Equivalent Test Circuit
Figure 2. Forward Voltage Figure 3. Reverse Leakage
7000
REVERSE VOLTAGE (V)
5000
3000
5
021
6000
4000
6
5 10 20 50 100 200
1
2
3
4
30
0
TA = 155°C
TA = 25°C
TA = −55°C
REVERSE CURRENT (nA)
FORWARD CURRENT (mA)
TA = −55°C
1 10 100 1000
1
200
400
600
800
1000
1200
FORWARD VOLTAGE (mV)
155°C
25°C
BAS19LT1, BAS20LT1, BAS21LT1, BAS21DW5T1
http://onsemi.com
4
PACKAGE DIMENSIONS
SOT−23 (TO−236)
CASE 318−09
ISSUE AH
DIM
A
MIN MAX MIN MAX
MILLIMETERS
0.1102 0.1197 2.80 3.04
INCHES
B0.0472 0.0551 1.20 1.40
C0.0385 0.0498 0.99 1.26
D0.0140 0.0200 0.36 0.50
G0.0670 0.0826 1.70 2.10
H0.0040 0.0098 0.10 0.25
J0.0034 0.0070 0.085 0.177
K0.0180 0.0236 0.45 0.60
L0.0350 0.0401 0.89 1.02
S0.0830 0.0984 2.10 2.50
V0.0177 0.0236 0.45 0.60
NOTES:
1. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.
2. CONTROLLING DIMENSION: INCH.
3. MAXIUMUM LEAD THICKNESS INCLUDES LEAD
FINISH THICKNESS. MINIMUM LEAD THICKNESS
IS THE MINIMUM THICKNESS OF BASE
MATERIAL.
4. 318−01, −02, AND −06 OBSOLETE, NEW
STANDARD 318−09.
1
3
2
AL
BS
VG
DH
C
KJSTYLE 8:
PIN 1. ANODE
2. NO CONNECTION
3. CATHODE
mm
inches
SCALE 10:1
0.8
0.031
0.9
0.035
0.95
0.037
0.95
0.037
2.0
0.079
*For additional information on our Pb−Free strategy and soldering
details, please download the ON Semiconductor Soldering and
Mounting Techniques Reference Manual, SOLDERRM/D.
SOLDERING FOOTPRINT*
BAS19LT1, BAS20LT1, BAS21LT1, BAS21DW5T1
http://onsemi.com
5
PACKAGE DIMENSIONS
NOTES:
1. DIMENSIONING AND TOLERANCING
PER ANSI Y14.5M, 1982.
2. CONTROLLING DIMENSION: INCH.
3. 419A−01 OBSOLETE. NEW STANDARD
419A−02.
4. DIMENSIONS A AND B DO NOT INCLUDE
MOLD FLASH, PROTRUSIONS, OR GATE
BURRS.
DIM
A
MIN MAX MIN MAX
MILLIMETERS
1.80 2.200.071 0.087
INCHES
B1.15 1.350.045 0.053
C0.80 1.100.031 0.043
D0.10 0.300.004 0.012
G0.65 BSC0.026 BSC
H−−− 0.10−−−0.004
J0.10 0.250.004 0.010
K0.10 0.300.004 0.012
N0.20 REF0.008 REF
S2.00 2.200.079 0.087
B0.2 (0.008) MM
12 3
45
A
G
S
D 5 PL
H
C
N
J
K
−B−
SC−88A (SOT−353)
CASE 419A−02
ISSUE G
mm
inches
SCALE 20:1
0.65
0.025
0.65
0.025
0.50
0.0197
0.40
0.0157
1.9
0.0748
*For additional information on our Pb−Free strategy and soldering
details, please download the ON Semiconductor Soldering and
Mounting Techniques Reference Manual, SOLDERRM/D.
SOLDERING FOOTPRINT*
BAS19LT1, BAS20LT1, BAS21LT1, BAS21DW5T1
http://onsemi.com
6
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BAS19LT1/D
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