Bulletin PD-20647 rev. C 11/04
1N5820
SCHOTTKY RECTIFIER
3.0 Amp
Major Ratings and Characteristics
Characteristics
I
F(AV)
Rectangular
waveform
V
RRM
I
FSM
@ tp = 5 µs sine
V
F
T
J
@ 3 Apk, T
J
= 25°C
Description/ Features
Units
A
The 1N5820 axial leaded Schottky rectifier has been opti-
mized for very low forward voltage drop, with moderate
leakage. Typical applications are in switching power sup-
plies, converters, free-wheeling diodes, and reverse battery
protection.
Low profile, axial leaded outline
High purity, high temperature epoxy encapsulation for
enhanced mechanical strength and moisture resistance
Very low forward voltage drop
High frequency operation
Guard ring for enhanced ruggedness and long term
reliability
Lead-Free plating
Values
3.0
20
450
0.475
- 65 to 150
V
A
V
°C
CASE STYLE AND DIMENSIONS
Outline C - 16
Dimensions in millimeters and inches
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1N5820
Bulletin PD-20647 rev. C 11/04
Voltage Ratings
Part number
V
R
Max. DC Reverse Voltage (V)
V
RWM
Max. Working Peak Reverse Voltage (V)
1N5820
20
Absolute Maximum Ratings
Parameters
I
F(AV)
Max. Average Forward Current
I
FSM
Max. Peak One Cycle Non-Repetitive
Surge Current, @ T
J
= 25°C
1N5820 Units
3.0
450
90
A
Conditions
50% duty cycle @ T
L
= 114 °C, rectangular wave form
With cooling fins
Following any rated
load condition and with
10ms Sine or 6ms Rect. pulse rated V
RRM
applied
5µs Sine or 3µs Rect. pulse
A
Electrical Specifications
Parameters
V
FM
I
RM
C
T
L
S
Max. Forward Voltage Drop
(1)
Typ.
0.41
0.49
0.05
8.1
350
9.0
-
Max.
0.475
0.85
2.0
20
-
-
10000
Units
V
V
mA
mA
pF
nH
V/ µs
Conditions
@ 3A
@ 9.4A
T
J
= 25 °C
T
J
= 100 °C
1Mhz), @ 25°C
T
J
= 25 °C
V
R
= rated V
R
Max. Reverse Leakage Current (1)
Typical Junction Capacitance
Typical Series Inductance
V
R
= 5V
DC
(test signal range 100kHz to
Measured lead to lead 5mm from package body
(Rated V
R
)
dv/dt Max. Voltage Rate of Change
(1) Pulse Width < 300µs, Duty Cycle <2%
Thermal-Mechanical Specifications
Parameters
T
J
T
stg
Max. Storage Temperature Range
1N5820 Units
°C
°C
- 65 to 150
34
80
Conditions
Max. Junction Temperature Range (2) - 65 to 150
R
thJL
Max. Thermal Resistance Junction
to Lead
R
thJA
Max. Thermal Resistance Junction
to Ambient
Wt
Approximate Weight
Case Style
(2) dPtot
dTj
<
1
Rth( j-a)
°C/W With fin 20x20 (0.79x0.79) 1.0 thick
°C/W DC operation, without cooling fin
1.2 (0.042) gr (oz)
C-16
thermal runaway condition for a diode on its own heatsink
2
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1N5820
Bulletin PD-20647 rev. C 11/04
100
Tj = 150˚C
Reverse Current - I
R
(mA)
100
10
1
0.1
0.01
0.001
0
125˚C
100˚C
75˚C
50˚C
25˚C
Instantaneous Forward Current - I
F
(A)
10
5
10
15
20
Reverse Voltage - V
R
(V)
Fig. 2 - Typical Peak Reverse Current
Vs. Reverse Voltage
1
Tj = 150˚C
Tj = 125˚C
Tj = 25˚C
1000
Junction Capacitance - C
T
(pF)
Tj = 25˚C
0.1
0
0.2
0.4
0.6
0.8
Forward Voltage Drop - V
FM
(V)
1
100
0
5
10
15
20
Reverse Voltage - V
R
(V)
Fig. 3 - Typical Junction Capacitance
Vs. Reverse Voltage
Fig. 1 - Typical Forward Voltage Drop Characteristics
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1N5820
Bulletin PD-20647 rev. C 11/04
150
Allowable Lead Temperature (°C)
1.4
Allowable Power Loss (Watts)
140
130
120
110
100
see note (2)
1.2
1
0.8
0.6
0.4
0.2
0
D = 0.20
D = 0.25
D = 0.33
D = 0.50
D = 0.75
RMS Limit
DC
DC
Square wave
(D = 0.5)
90
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5
Average Forward Current - I
F(AV)
(A)
Fig. 4 - Maximum Average Forward Current
Vs. Allowable Lead Temperature
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5
Average Forward Current - I
F(AV)
(A)
Fig. 5 - Maximum Average Forward Dissipation
Vs. Average Forward Current
Non-Repetitive Surge Current - I
FSM
(A)
1000
Tj = 25˚C
100
At Any Rated Load Condition
And With Rated Vrrm Applied
Following Surge
10
10
100
1000
10000
Square Wave Pulse Duration - t
p
(microsec)
Fig. 6 - Maximum Peak Surge Forward Current Vs. Pulse Duration
(2)
Formula used: T
C
= T
J
- (Pd + Pd
REV
) x R
thJC
;
Pd = Forward Power Loss = I
F(AV)
x V
FM
@ (I
F(AV)
/
D) (see Fig. 6);
Pd
REV
= Inverse Power Loss = V
R1
x I
R
(1 - D)
4
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1N5820
Bulletin PD-20647 rev. C 11/04
Ordering Information Table
Device Code
1N5820
1
TR
2
1
2
-
-
Part Number: 3A, 20V
TR= Tape & Reel package (1200 pcs)
-
= Box package (500 pcs)
Data and specifications subject to change without notice.
This product has been designed for Industrial Level and Lead-Free.
Qualification Standards can be found on IR's Web site.
IR WORLD HEADQUARTERS:
233 Kansas St., El Segundo, California 90245, USA Tel: (310) 252-7105
TAC Fax: (310) 252-7309
Visit us at www.irf.com for sales contact information. 11/04
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