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 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) IO3.0 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) RθJA 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
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
2Rectifier 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
µA
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/µs, 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
MILLIMETERSINCHES
A0.370 0.380 9.40 9.65
B0.190 0.210 4.83 5.33
D0.048 0.052 1.22 1.32
K1.000 ––– 25.40 –––
CASE 267–03
ISSUE C
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specifically disclaims any and all liability, including without limitation consequential or incidental damages. “Typical” parameters which may be provided in Motorola
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Mfax is a trademark of Motorola, Inc.
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MR850/D
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