
1
Rectifier Device Data
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
Non–Repetitive Peak Reverse Voltage
VRSM
VR(RMS)
IO
75
150
250
450
650
Volts
RMS Reverse Voltage
35
70
140
280
420
Volts
Average Rectified Forward Current
(Single phase resistive load, TA = 80
°
C)
3.0
Amp
Non–Repetitive 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
θ
JA
28
°
C/W
Preferred
devices are Motorola recommended choices for future use and best overall value.
Order this document
by MR850/D
SEMICONDUCTOR TECHNICAL DATA
FAST RECOVERY
POWER RECTIFIERS
50–600 VOLTS
3.0 AMPERES
CASE 267–03
MR852 and MR856 are
Motorola Preferred Devices
Rev 2