
MR850 THRU MR856 
SOFT RECOVERU, FAST SWITCHING PLASTIC RECTIFIER 
VOLTAGE - 50 to 600 Volts  CURRENT - 3.0 Amperes 
FEATURES 
l 
High surge current capability 
l 
Plastic package has Underwriters Laboratory 
Flammability Classification 94V-O 
l 
Void-free molded plastic package 
l 
3.0 ampere operation at T
A
=50
 with no thermal runaway 
l 
Exceeds environmental standards of MIL-S-19500/228 
l 
Fast switching for high efficiency 
MECHANICAL DATA 
Case: JEDEC DO-201AD molded plastic  
Terminals: Plated Axial leads, solderable per MIL-STD-750, 
          Method 2026 
Polarity: Color Band denotes end 
Mounting Position: Any 
Weight: 0.04 ounce, 1.1 gram 
MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS 
Ratings at 25
 ambient temperature unless otherwise specified. 
Resistive or inductive load. 
Maximum Recurrent Peak Reverse Voltage
Maximum RMS Voltage
Maximum DC Blocking Voltage
Maximum Average Forward Rectified Current  
.375"(9.5mm) Lead Length at T
A
=50
Peak Forward Surge Current 10ms single half sine-
wave superimposed on rated load at T
A
=25
Maximum Repetitive Peak Forward Surge(Note1) 
Maximum Instantaneous Forward Voltage at 3.0A 
Maximum DC Reverse Current  T
A
=25
at Rated DC Blocking Voltage T
A
=100
Maximum Reverse Recovery Time(Note 3) T
J
=25
Typical Junction capacitance (Note 2)  
Typical Thermal Resistance (Note 4)  
Operating Junction Temperature Range 
Storage Temperature Range
SYMBOLS MR850 MR851 MR852 MR854 MR856 UNITS 
V
RRM
50 
100 
200 
V
RMS
35 
70 
140 
V
DC
50 
100 
200 
I
(AV)
400 
280 
400 
600 
480 
600 
Volts 
Volts 
Volts 
Amps 
3.0 
I
FSM
100.0 
Amps 
I
FRM
V
F
I
R
10.0 
1.25 
10.0 
500.0 
150 
60 
15.0 
-50 to +125 
-50 to +150 
Amps 
Volts 
A 
A 
ns 
P
F 
/W 
T
RR
C
J
R
JA 
T
J
T
STG
NOTES: 
1. Repetitive Peak Forward Surge Current at f<15KHz 
2. 
Measured at 1 MHz and applied reverse voltage of 4.0 Volts
3. 
Reverse Recovery Test Conditions: I
F
=0.5A, I
R
=1.0A, I
rr
=0.25A
4. 
Thermal Resistance From Junction to Ambient at 0.375"(9.5mm) lead length with both leads to heat sink
DO-201AD