Motorola MURF820 Datasheet
SEMICONDUCTOR TECHNICAL DATA
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by MURF820/D
Designed for use in switching power supplies, inverters and as free wheeling
diodes, these state–of–the–art devices have the following features:
• Ultrafast 35 ns Recovery Times
• 150°C Operating Junction Temperature
• Epoxy Meets UL94, VO @ 1/8″
• High Temperature Glass Passivated Junction
• Low Leakage Specified @ 150°C Case Temperature
• Current Derating @ Both Case and Ambient Temperatures
• Electrically Isolated. No Isolation Hardware Required.
• UL Recognized File #E69369
Mechanical Characteristics
• Case: Epoxy, Molded
• Weight: 1.9 grams (approximately)
• Finish: All External Surfaces Corrosion Resistant and Terminal Leads are
Readily Solderable
• Lead Temperature for Soldering Purposes: 260°C Max. for 10 Seconds
• Shipped 50 units per plastic tube
• Marking: U820
MAXIMUM RATINGS
Peak Repetitive Reverse Voltage
Working Peak Reverse Voltage
DC Blocking Voltage
Average Rectified Forward Current
(Rated VR), TC = 150°C
Peak Repetitive Forward Current
(Rated VR, Square Wave, 20 kHz), TC = 150°C
Non–repetitive Peak Surge Current
(Surge applied at rated load conditions halfwave, single phase, 60 Hz)
Operating Junction and Storage Temperature TJ, T
RMS Isolation Voltage (t = 1 second, R.H. ≤ 30%, TA = 25°C) (2) Per Figure 3
THERMAL CHARACTERISTICS
Maximum Thermal Resistance, Junction to Case R
Lead T emperature for Soldering
Purposes: 1/8″ from Case for 5 seconds
(1) UL Recognized mounting method is per Figure 4.
(2) Proper strike and creepage distance must be provided.
(1)
1
3
Rating Symbol Value Unit
Per Figure 4 (1)
Per Figure 5
V
RRM
V
RWM
V
I
F(AV)
I
FM
I
FSM
V
iso1
V
iso2
V
iso3
θJC
T
Motorola Preferred Device
ULTRAFAST RECTIFIER
8 AMPERES
200 VOL TS
1
3
CASE 221E–01
ISOLATED TO–220
200 Volts
R
8 Amps
16 Amps
100 Amps
stg
L
– 65 to +150 °C
4500
3500
1500
4.2 °C/W
260 °C
Volts
SWITCHMODE is a trademark of Motorola, Inc.
This document contains information on a new product. Specifications and information herein are subject to change without notice.
Preferred devices are Motorola recommended choices for future use and best overall value.
Rev 1
Rectifier Device Data
Motorola, Inc. 1996
1
MURF820
ELECTRICAL CHARACTERISTICS
Characteristic Symbol Max Unit
Maximum Instantaneous Forward Voltage (3)
(iF = 8.0 Amp, TC = 150°C)
(iF = 8.0 Amp, TC = 25°C)
v
F
0.895
0.975
Volts
Maximum Instantaneous Reverse Current (3)
(Rated dc Voltage, TC = 150°C)
(Rated dc Voltage, TC = 25°C)
Maximum Reverse Recovery Time
(IF = 1.0 Amp, di/dt = 50 Amp/µs)
(IF = 0.5 Amp, iR = 1.0 Amp, I
(3) Pulse Test: Pulse Width = 300 µs, Duty Cycle ≤ 2.0%.
100
50
20
10
5.0
2.0
1.0
0.3
0.1
, INSTANTANEOUS FORWARD CURRENT (AMPS)
F
0.2 0.4 0.6 0.8 1.0 1.2
i
TJ = 25°C
vF, INSTANTANEOUS VOLTAGE (VOLTS)
= 0.25 Amp)
REC
100°C
10 K
1.0 K
µ
, REVERSE CURRENT ( A)
R
I
0.04
0.01
400
100
40
10
2.0
1.0
0.4
0.1
i
R
t
rr
TJ = 100°C
25°C
VR, REVERSE VOLTAGE (VOLTS)
250
µA
5.0
ns
35
25
20016012080400 20 60 100 140 180
Figure 1. T ypical Forward Voltage
Figure 2. T ypical Reverse Leakage Current*
2
Rectifier Device Data
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