DIODES DL4937

DL4933 - DL4937
1.0A SURFACE MOUNT FAST RECOVERY RECTIFIER
Features
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Glass Passivated Junction
Low Leakage
Low Forward Voltage Drop
High Current Capability
For Surface Mounted Application
Plastic Material UL Flammability
Classification Rating 94V-0
A
B
C
Mechanical Data
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MELF
Case: MELF, Plastic
Terminals: Solderable per MIL-STD-202,
Method 208
Polarity: Cathode band
Approx Weight: 0.25 grams
Mounting Position: Any
Marking: Cathode Band Only
Dim
Min
Max
A
4.80
5.20
B
2.40
2.60
C
0.55 Nominal
All Dimensions in mm
Maximum Ratings and Electrical Characteristics @ TA = 25°C unless otherwise specified
Single phase, half wave, 60Hz, resistive or inductive load.
For capacitive load, derate current by 20%.
Characteristic
Peak Repetitive Reverse Voltage
Working Peak Reverse Voltage
DC Blocking Voltage
RMS Reverse Voltage
Maximum Average Forward Rectified Current @ TT=75°C
Symbol
DL4933
DL4934
DL4935
DL4936
DL4937
Units
VRRM
VRWM
VR
50
100
200
400
600
V
VR(RMS)
35
70
140
280
420
V
IO
1.0
A
IFSM
30
A
@ IF = 1.0A
VF
1.2
V
Maximum DC Reverse Current at Rated Blocking Voltage
IR
5.0
mA
Maximum Full Load Reverse Current Full Cycle Average
@ TT = 55°C
IR
100
mA
Maximum Reverse Recovery Time (Note 1)
trr
200
ns
Typical Junction Capacitance (Note 2)
Cj
15
pF
Tj, TSTG
-65 to +150
°C
Peak Forward Surge Current 8.3 ms half sine-wave
superimposed on rated load (JEDEC Method)
Maximum Instantaneous Forward Voltage
Operating and Storage Temperature Range
Notes:
1. Reverse Recovery Test Conditions: IF =1.0A, VR =30V, di/dt = 50 A/ms.
2. Measured at 1.0MHz and Applied Reverse Voltage of 4.0V.
DS15001 Rev. D-2
1 of 2
DL4933-DL4937
IO, AVERAGE FORWARD RECTIFIED CURRENT (A)
IFSM, PEAK FORWARD SURGE CURRENT (A)
10
1.0
Tj = 25ºC
Pulse Width = 300 ms
0.1
0.01
0.6
0.8
1.0
1.2
1.4
1.0
0.8
0.6
0.4
0.2
0
25
75
100
125 150 175 200
100
30
Tj = 150ºC
Pulse Width
8.3 ms Single Half
Sine-Wave
20
10
0
50
TT, TERMINAL TEMPERATURE (ºC)
Fig. 2 Forward Derating Curve
Cj, JUNCTION CAPACITANCE (pF)
IFSM, PEAK FORWARD SURGE CURRENT (A)
VF, INSTANTANEOUS FORWARD VOLTAGE (V)
Fig. 1 Peak Forward Surge Current vs Forward Voltage
Single Phase
Half Wave 60 Hz
Resistive or
Inductive Load
1
10
100
NUMBER OF CYCLES AT 60 Hz
Fig. 3 Peak Fwd Surge Current vs Number of Cycles at 60 Hz
DS15001 Rev. D-2
2 of 2
Tj = 25ºC
f = 1MHz
10
1
1
10
100
VR, REVERSE VOLTAGE (V)
Fig. 4 Junction Capacitance vs Reverse Voltage
DL4933-DL4937