BAS21T
SURFACE MOUNT FAST SWITCHING DIODE
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Features
Mechanical Data
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Ultra-Small Surface Mount Package
Fast Switching Speed
For General Purpose Switching Applications
High Conductance
Lead Free/RoHS Compliant (Note 3)
"Green" Device (Notes 4 and 5)
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Case: SOT-523
Case Material: Molded Plastic, "Green" Molding Compound,
Note 5. UL Flammability Classification Rating 94V-0
Moisture Sensitivity: Level 1 per J-STD-020D
Terminals: Solderable per MIL-STD-202, Method 208
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Lead Free Plating (Matte Tin Finish annealed over Alloy 42
leadframe)
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Polarity: See Diagram
Marking Information: See Page 2
Ordering Information: See Page 2
Weight: 0.002 grams (approximate)
SOT-523
TOP VIEW
TOP VIEW
Internal Schematic
Maximum Ratings @T = 25°C unless otherwise specified
A
Characteristic
Repetitive Peak Reverse Voltage
Symbol
VRRM
VRWM
VR
Value
250
Unit
V
Working Peak Reverse Voltage
DC Blocking Voltage
200
V
RMS Reverse Voltage
141
400
200
V
VR(RMS)
IFM
Forward Continuous Current (Note 1)
Average Rectified Output Current (Note 1)
mA
mA
IO
2.5
0.5
625
Non-Repetitive Peak Forward Surge Current
@ t = 1.0μs
@ t = 1.0s
A
IFSM
IFRM
Repetitive Peak Forward Surge Current
mA
Thermal Characteristics
Characteristic
Power Dissipation (Note 1)
Symbol
PD
Value
150
Unit
mW
Thermal Resistance Junction to Ambient (Note 1)
Operating and Storage Temperature Range
833
°C/W
°C
Rθ
TJ, TSTG
JA
-65 to +150
Electrical Characteristics @T = 25°C unless otherwise specified
A
Characteristic
Symbol
Min
Max
Unit
Test Condition
Reverse Breakdown Voltage (Note 2)
250
V
V(BR)R
⎯
IR = 100μA
IF = 100mA
IF = 200mA
TJ = 25°C
TJ = 100°C
1.0
1.25
Forward Voltage
V
VF
⎯
nA
μA
100
15
Reverse Current @ Rated DC Blocking Voltage (Note 2)
Total Capacitance
IR
CT
trr
⎯
⎯
⎯
5.0
50
pF
VR = 0, f = 1.0MHz
IF = IR = 30mA,
Irr = 0.1 x IR, RL = 100Ω
Reverse Recovery Time
ns
Notes:
1. Device mounted on FR-4 PC board with recommended pad layout, which can be found on our website at
http://www.diodes.com/datasheets/ap02001.pdf.
2. Short duration pulse test used to minimize self-heating effect.
3. No purposefully added lead.
4. Diodes Inc.'s "Green" policy can be found on our website at http://www.diodes.com/products/lead_free/index.php.
5. Product manufactured with Date Code UO (week 40, 2007) and newer are built with Green Molding Compound. Product manufactured prior to Date
Code UO are built with Non-Green Molding Compound and may contain Halogens or Sb2O3 Fire Retardants.
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www.diodes.com
March 2009
© Diodes Incorporated
BAS21T
Document number: DS30264 Rev. 10 - 2