Mur860

MOTOROLA

Order this document
by MUR820/D

SEMICONDUCTOR TECHNICAL DATA

SWITCHMODE™ Power Rectifiers

MUR820
MUR840
MUR860

. . . designed for use in switching power supplies, inverters and as
free wheeling diodes, these state–of–the–art devices have the
following features:
•
•
•
•
•
•
•
•

Ultrafast 25, 50 and 75 Nanosecond Recovery Time
175°C Operating JunctionTemperature
Popular TO–220 Package
Epoxy Meets UL94, VO @ 1/8″
Low Forward Voltage
Low Leakage Current
High Temperature Glass Passivated Junction
Reverse Voltage to 600 Volts

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 SolderingPurposes: 260°C Max. for
10 Seconds
• Shipped 50 units per plastic tube
• Marking: U820, U840, U860

Motorola Preferred Devices

ULTRAFAST
RECTIFIERS
8 AMPERES
200–400–600 VOLTS

4

1
4
3

1
3

CASE 221B–03
TO–220AC

MAXIMUM RATINGS
MUR
Ri
Rating

S bl
Symbol

820

840

860

Ui
Unit

Peak Repetitive Reverse Voltage
Working Peak Reverse Voltage
DC BlockingVoltage

VRRM
VRWM
VR

200

400

600

Volts

Average Rectified Forward Current
Total Device, (Rated VR), TC = 150°C

IF(AV)

8.0

Amps

IFM

16

Amps

IFSM

100

Amps

TJ, Tstg

–65 to +175

°C

Peak Repetitive Forward Current
(Rated VR, Square Wave, 20 kHz), TC = 150°C
Nonrepetitive Peak Surge Current
(Surge applied at rated load conditions halfwave,single phase, 60 Hz)
Operating Junction Temperature and Storage Temperature

THERMAL CHARACTERISTICS
Maximum Thermal Resistance, Junction to Case

RθJC

3.0

°C/W

2.0

ELECTRICAL CHARACTERISTICS
Maximum Instantaneous Forward Voltage (1)
(iF = 8.0 Amps, TC = 150°C)
(iF = 8.0 Amps, TC = 25°C)

vF

Maximum Instantaneous Reverse Current (1)
(Rated dc Voltage, TJ = 150°C)
(Rated dcVoltage, TJ = 25°C)

iR

Maximum Reverse Recovery Time
(IF = 1.0 Amp, di/dt = 50 Amps/µs)
(IF = 0.5 Amp, iR = 1.0 Amp, IREC = 0.25 Amp)

Volts

trr

0.895
0.975

1.00
1.30

1.20
1.50
µA

250
5.0

500
10

35
25

60
50

ns

(1) Pulse Test: Pulse Width = 300 µs, Duty Cycle ≤ 2.0%.
SWITCHMODE is a trademark of Motorola, Inc.
Preferred devices are Motorolarecommended choices for future use and best overall value.
Rev 3

Rectifier Device Data
© Motorola, Inc. 1996

1

MUR820 MUR840 MUR860
MUR820
1000

100
IR, REVERSE CURRENT (m A)

70
50

20

10

100°C
25°C

1.0

0.1

10
0.01

7.0

0

20

80 100 120 140 160
60
VR, REVERSE VOLTAGE (VOLTS)

40

5.0

Figure 2. Typical Reverse Current*
3.0
2.0
TJ = 175°C

100°C25°C

1.0
0.7
0.5

0.3
0.2

0.1
0.2 0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

1.1

1.2

10
9.0

RATED VR APPLIED

8.0

dc

7.0
6.0

SQUARE WAVE

5.0
4.0
3.0
2.0
1.0
0
140

150

14
RqJA = 16°C/W
RqJA = 60°C/W
(NO HEAT SINK)

dc
10
SQUARE WAVE

8.0
6.0

dc

4.0

SQUARE WAVE

2.0
0
0

20

40

60

80

100

120140

170

180

Figure 3. Current Derating, Case

160

180

200

PF(AV) , AVERAGE POWER DISSIPATION (WATTS)

Figure 1. Typical Forward Voltage

12

160

TC, CASE TEMPERATURE (°C)

vF, INSTANTANEOUS VOLTAGE (VOLTS)

IF(AV) , AVERAGE FORWARD CURRENT (AMPS)

180 200

* The curves shown are typical for the highest voltage device in the
grouping. Typical reverse current forlower voltage selections can be
estimated from these same curves if VR is sufficiently below rated VR.
IF(AV) , AVERAGE FORWARD CURRENT (AMPS)

i F , INSTANTANEOUS FORWARD CURRENT (AMPS)

30

TJ = 175°C

100

10
TJ = 175°C

9.0
8.0
7.0

SQUARE WAVE

6.0

dc

5.0
4.0
3.0
2.0
1.0
0
0

1.0

2.0

3.0

4.0

5.0

6.0

7.0

8.0

9.0

TA, AMBIENT...