1
Rectifier Device Data
Axial Lead Fast Recovery Rectifiers
Axial lead mounted fast recovery power rectifiers are designed for special
applications such as dc power supplies, inverters, converters, ultrasonic
systems, choppers, low RF interference and free wheeling diodes. A complete
line of fast recovery rectifiers having typical recovery time of 100 nanoseconds
providing high efficiency at frequencies to 250 kHz.
Mechanical Characteristics
Case: Epoxy, Molded
Weight: 1.1 gram (approximately)
Finish: All External Surfaces Corrosion Resistant and Terminal Leads are
Readily Solderable
Lead and Mounting Surface Temperature for Soldering Purposes:
220
C Max. for 10 Seconds, 1/16
from case
Shipped in plastic bags, 5,000 per bag.
Available Tape and Reeled, 1500 per reel, by adding a "RL" suffix to the
part number
Polarity: Cathode Indicated by Polarity Band
Marking: R850, R851, R852, R854, R856
MAXIMUM RATINGS
Rating
Symbol
MR850
MR851
MR852
MR854
MR856
Unit
Peak Repetitive Reverse Voltage
Working Peak Reverse Voltage
DC Blocking Voltage
VRRM
VRWM
VR
50
100
200
400
600
Volts
NonRepetitive Peak Reverse Voltage
VRSM
75
150
250
450
650
Volts
RMS Reverse Voltage
VR(RMS)
35
70
140
280
420
Volts
Average Rectified Forward Current
(Single phase resistive load, TA = 80
C)
IO
3.0
Amp
NonRepetitive Peak Surge Current
(surge applied at rated load conditions)
IFSM
100
(one cycle)
Amp
Operating and Storage Junction
Temperature Range
TJ,
Tstg
65 to +125
65 to +150
C
THERMAL CHARACTERISTICS
Characteristic
Symbol
Max
Unit
Thermal Resistance, Junction to Ambient
(Recommended Printed Circuit Board Mounting, See Note 4, Page 5)
R
JA
28
C/W
Preferred devices are Motorola recommended choices for future use and best overall value.
Motorola, Inc. 1996
Order this document
by MR850/D
MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
MR850
MR851
MR852
MR854
MR856
FAST RECOVERY
POWER RECTIFIERS
50600 VOLTS
3.0 AMPERES
CASE 26703
MR852 and MR856 are
Motorola Preferred Devices
Rev 2
MR850 MR851 MR852 MR854 MR856
2
Rectifier Device Data
ELECTRICAL CHARACTERISTICS
Characteristic
Symbol
Min
Typ
Max
Unit
Forward Voltage
(IF = 3.0 Amp, TJ = 25
C)
VF
--
1.04
1.25
Volts
Reverse Current (rated dc voltage) TJ = 25
C
MR850
MR851
MR852
MR854
MR856
TJ = 80
C
IR
--
--
--
--
--
--
2.0
--
60
--
--
100
10
150
150
200
250
300
A
REVERSE RECOVERY CHARACTERISTICS
Characteristic
Symbol
Min
Typ
Max
Unit
Reverse Recovery Time
(IF = 1.0 Amp to VR = 30 Vdc, Figure 9)
(IF = 15 Amp, di/dt = 10 A/
s, Figure 10)
trr
--
--
100
150
200
300
ns
Reverse Recovery Current
(IF = 1.0 Amp to VR = 30 Vdc, Figure 9)
IRM(REC)
--
--
2.0
Amp
PACKAGE DIMENSIONS
NOTES:
1. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.
2. CONTROLLING DIMENSION: INCH.
STYLE 1:
PIN 1. CATHODE
2. ANODE
1
2
K
A
K
D
B
DIM
MIN
MAX
MIN
MAX
MILLIMETERS
INCHES
A
0.370
0.380
9.40
9.65
B
0.190
0.210
4.83
5.33
D
0.048
0.052
1.22
1.32
K
1.000
25.40
CASE 26703
ISSUE C
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MR850/D
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