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SDM40E20L /S /C /A
Document number: DS30298 Rev. 11 - 2
1 of 3
www.diodes.com
June 2008
? Diodes Incorporated
SDM40E20L /S /C /A
DUAL SURFACE MOUNT SCHOTTKY BARRIER DIODE
Features
?
Very Low Forward Voltage Drop
?
Guard Ring Construction for Transient Protection
?
High Conductance
?
Lead, Halogen and Antimony Free, RoHS Compliant
"Green" Device (Notes 4, 5 and 6)
Mechanical Data
?
Case: SOT-23
?
Case Material: Molded Plastic. UL Flammability Classification
Rating 94V-0
?
Moisture Sensitivity: Level 1 per J-STD-020D
?
Polarity: See Diagram
?
Leads: Solderable per MIL-STD-202, Method 208
?
Terminals: SDM40E20L/S/A Finish ?
Matte Tin Finish
annealed over Alloy 42 leadframe.
SDM40E20LC Finish
?
Matte Tin Finish
annealed over CDA194 leadframe.
?
Marking Information: See Page 2
?
Ordering Information: See Page 2
?
Weight: 0.008 grams (approximate)
Top View
SDM40E20LA
SDM40E20LS
SDM40E20LC
Maximum Ratings
@TA
= 25°C unless otherwise specified
Single phase, half wave, 60Hz, resistive or inductive load.
For capacitance load, derate current by 20%.
Characteristic
Symbol
Value
Unit
Peak Repetitive Reverse Voltage
Working Peak Reverse Voltage
DC Blocking Voltage
VRRM
VRWM
VR
20
V
RMS Reverse Voltage
VR(RMS)
14
V
Forward Continuous Current (Note 1)
IFM
0.4
A
Non-Repetitive Peak Forward Surge Current
8.3ms single half sine-wave superimposed on rated load
IFSM
2
A
Thermal Characteristics
Characteristic
Symbol
Value
Unit
225
Power Dissipation (Note 1)
(Note 2)
PD
300
mW
444
Typical Thermal Resistance Junction to Ambient (Note 1)
(Note 2)
RθJA
333
°C/W
Operating and Storage Temperature Range
TJ, TSTG
-65 to +125
°C
Electrical Characteristics
@TA
= 25°C unless otherwise specified
Characteristic
Symbol
Min
Typ
Max
Unit
Test Conditions
Reverse Breakdown Voltage (Note 3)
V(BR)R
20
?
?
V
IR
= 0.5mA
Forward Voltage Drop
VF
?
?
?
?
0.310
0.430
V
IF
= 0.1A
IF = 0.5A
Leakage Current (Note 3)
IR
?
?
?
?
100
250
μA
VR
= 10V
VR
= 20V
Total Capacitance
CT
?
120
?
pF
f = 1MHz, VR
= 0VDC
Notes: 1. Device mounted on FR-5 1.0 x 0.75 x 0.062 inch PCB pad layout.
2. Device mounted on Alumina PCB, 0.4 inch x 0.3 inch x 0.024 inch pad layout.
3. Short duration pulse test used to minimize self-heating effect.
4. No purposefully added lead. Halogen and Antimony Free.
5. Diodes Inc.'s "Green" policy can be found on our website at http://www.diodes.com/products/lead_free/index.php.
6. Product manufactured with Green Molding Compound and does not contain Halogens or Sb
2O3
Fire Retardants.
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