IF(AV) Rectangular 3.0 A
waveform
VRRM 20 V
IFSM @ tp = 5 µs sine 450 A
VF@
3 Apk, TJ
= 25°C 0.475 V
TJ- 65 to 150 °C
Characteristics 1N5820 Units 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
Description/ Features
Major Ratings and Characteristics
SCHOTTKY RECTIFIER 3.0 Amp
1N5820
Bulletin PD-20647 rev. B 05/02
1www.irf.com
Dimensions in millimeters and inches
Outline C - 16
CASE STYLE AND DIMENSIONS
1N5820
Bulletin PD-20647 rev. B 05/02
2www.irf.com
IF(AV) Max. Average Forward Current 3.0 A 50% duty cycle @ TL = 114 °C, rectangular wave form
With cooling fins
IFSM Max. Peak One Cycle Non-Repetitive 450 5µs Sine or 3µs Rect. pulse
Surge Current, @ TJ = 25°C 90 10ms Sine or 6ms Rect. pulse
Absolute Maximum Ratings
Parameters 1N5820 Units Conditions
AFollowing any rated
load condition and with
rated VRRM applied
Part number 1N5820
VRMax. DC Reverse Voltage (V)
VRWM Max. Working Peak Reverse Voltage (V)
Voltage Ratings
20
VFM Max. Forward Voltage Drop (1) 0.41 0.475 V @ 3A
0.49 0.85 V @ 9.4A
IRM Max. Reverse Leakage Current (1) 0.05 2.0 mA TJ = 25 °C
8.1 20 mA TJ = 100 °C
CTTypical Junction Capacitance 350 - pF VR = 5VDC (test signal range 100kHz to
1Mhz), @ 25°C
LSTypical Series Inductance 9.0 - nH Measured lead to lead 5mm from package body
dv/dt Max. Voltage Rate of Change - 10000 V/ µs (Rated VR)
(1) Pulse Width < 300µs, Duty Cycle <2%
TJ = 25 °C
Electrical Specifications
Parameters Typ. Max. Units Conditions
VR = rated VR
TJMax. Junction Temperature Range (2) - 6 5 t o 15 0 °C
Tstg Max. Storage Temperature Range - 65 to 150 °C
RthJL Max. Thermal Resistance Junction 34 °C/W With fin 20x20 (0.79x0.79) 1.0 thick
to Lead
RthJA Max. Thermal Resistance Junction 80 °C/W DC operation, without cooling fin
to Ambient
Wt Approximate Weight 1.2 (0.042) gr (oz)
Case Style C-16
Parameters 1N5820 Units Conditions
< thermal runaway condition for a diode on its own heatsink
Thermal-Mechanical Specifications
(2) dPtot 1
dTj Rth( j-a)
1N5820
Bulletin PD-20647 rev. B 05/02
3
www.irf.com
Fig. 2 - Typical Peak Reverse Current
Vs. Reverse Voltage
Fig. 3 - Typical Junction Capacitance
Vs. Reverse Voltage
Fig. 1 - Typical Forward Voltage Drop Characteristics
Instantaneous Forward Current - I F
(A)
Forward Voltage Drop - V FM
(V)
Reverse Voltage - VR (V)
Reverse Current - I R
(mA)
Reverse Voltage - VR (V)
Junction Capacitance - C T (pF)
0.1
1
10
100
0 0.2 0.4 0.6 0.8 1
Tj = 150˚C
Tj = 125˚C
Tj = 25˚C
0.001
0.01
0.1
1
10
100
0 5 10 15 20
125˚C
100˚C
75˚C
50˚C
25˚C
Tj = 150˚C
100
1000
0 5 10 15 20
Tj = 25˚C
1N5820
Bulletin PD-20647 rev. B 05/02
4www.irf.com
Fig. 4 - Maximum Average Forward Current
Vs. Allowable Lead Temperature
Fig. 6 - Maximum Peak Surge Forward Current Vs. Pulse Duration
(2) Formula used: TC = TJ - (Pd + PdREV) x RthJC
;
Pd = Forward Power Loss = IF(AV) x VFM @ (IF(AV) / D) (see Fig. 6);
PdREV = Inverse Power Loss = VR1 x IR (1 - D)
Average Forward Current - I F(AV)
(A)
Allowable Lead Temperature (°C)
Average Forward Current - I F(AV)
(A)
Allowable Power Loss (Watts)
Square Wave Pulse Duration - t p
(microsec)
Non-Repetitive Surge Current - I FSM (A)
Fig. 5 - Maximum Average Forward Dissipation
Vs. Average Forward Current
90
100
110
120
130
140
150
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5
DC
see note (2)
Square wave
(D = 0.5)
0
0.2
0.4
0.6
0.8
1
1.2
1.4
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5
DC
RMS Limit
D = 0.20
D = 0.25
D = 0.33
D = 0.50
D = 0.75
10
100
1000
10 100 1000 10000
Tj = 25˚C
At Any Rated Load Condition
And With Rated Vrrm Applied
Following Surge
1N5820
Bulletin PD-20647 rev. B 05/02
5
www.irf.com
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. 05/02
Data and specifications subject to change without notice.
This product has been designed for Industrial Level.
Qualification Standards can be found on IR's Web site.
Ordering Information Table
Device Code
12
1- Part Number: 3A, 20V
2- TR= Tape & Reel package (1200 pcs)
- = Box package (500 pcs)
1N5820 TR
