FR251
THRU
FR257
FAST RECOVERY RECTIFIER
VOLTAGE RANGE 50 to 1000 Volts CURRENT 2.5 Amperes
FEATURES
*
*
*
*
*
*
Fast switching
Low leakage
Low forward voltage drop
High current capability
High current surge
High reliability
MECHANICAL DATA
*
*
*
*
Case: Molded plastic
Epoxy: Device has UL flammability classification 94V-O
Lead: MIL-STD-202E method 208C guaranteed
Mounting position: Any
1.0 (25.4)
MIN.
.042 (1.1)
DIA.
.040 (1.0)
.160 (4.1)
.138 (3.5)
.160 (4.1)
DIA.
.138 (3.5)
MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS
Ratings at 25 C ambient temperature unless otherwise specified.
Single phase, half wave, 60 Hz, resistive or inductive load.
For capacitive load, derate current by 20%.
o
1.0 (25.4)
MIN.
Dimensions in inches and (millimeters)
MAXIMUM RATINGS (At T
A
= 25 C unless otherwise noted)
RATINGS
Maximum Recurrent Peak Reverse Voltage
Maximum RMS Voltage
Maximum DC Blocking Voltage
Maximum Average Forward Rectified Current
at T
A
= 75
o
C
Peak Forward Surge Current 8.3 ms single half sine-wave
superimposed on rated load (JEDEC method)
Typical Current Squared Time
o
SYMBOL
V
RRM
V
RMS
V
DC
I
O
I
FSM
I t
2
FR251 FR252 FR253 FR254 FR255 FR255P FR256 FR257 FR257P UNITS
50
35
50
100
70
100
200
140
200
400
280
400
600
420
600
2.5
150
93.38
600
420
600
800
560
800
1000
700
1000
1000
700
1000
Volts
Volts
Volts
Amps
Amps
A
2
S
Typical Junction Capacitance (Note 2)
Operating and Storage Temperature Range
C
J
T
J
, T
STG
60
-55 to + 150
pF
0
C
ELECTRICAL CHARACTERISTICS (At T
A
= 25 C unless otherwise noted)
CHARACTERISTICS
Maximum Instantaneous Forward Voltage at 2.5A DC
Maximum DC Reverse Current
at Rated DC Blocking Voltage T
A
= 25
o
C
Maximum Full Load Reverse Current Average,
Full Cycle .375” (9.5mm) lead length at T
L
= 55
o
C
Maximum Reverse Recovery Time (Note 1)
NOTES : 1. Test Conditions: I
F
= 0.5A, I
R
= -1.0A, I
RR
= -0.25A
2. Measured at 1 MH
Z
and applied reverse voltage of 4.0 volts
SYMBOL
V
F
FR251 FR252 FR253 FR254 FR255 FR255P FR256 FR257 FR257P UNITS
1.3
Volts
5.0
I
R
100
trr
150
250
150
500
250
uAmps
nSec
2019-05
REV:A
uAmps
o
RATING AND CHARACTERISTIC CURVES ( FR251 THRU FR257 )
FIG. 1 - TYPICAL FORWARD CURRENT
DERATING CURVE
AVERAGE FORWARD CURRENT, (A)
FIG. 3 - MAXIMUM NON-REPETITIVE FORWARD
SURGE CURRENT
150
PEAK FORWARD SURGE
CURRENT, (A)
2.5
2.0
1.5
1.0
.5
0
Single Phase
Half Wave 60Hz
Resistive or
Inductive Load
125
100
75
50
25
0
8.3ms Single Half Sine-Wave
(JEDEC Method)
0
25 50 75 100 125 150 175
AMBIENT TEMPERATURE, ( )
FIG. 3 - TYPICAL INSTANTANEOUS
FORWARD CHARACTERISTICS
JUNCTION CAPACITANCE, (pF)
1
2
5
10
20
50
NUMBER OF CYCLES AT 60Hz
100
INSTANTANEOUS FORWARD CURRENT, (A)
FIG. 4 - TYPICAL JUNCTION CAPACITANCE
200
100
60
40
20
10
6
4
2
1
.1
.2
.4
1.0 2
4
10
20
REVERSE VOLTAGE, ( V )
40
100
TJ = 25
20
10
3.0
1.0
0.3
0.1
.03
.01
0.4
0.6
0.8
1.0
1.2
1.4
1.6 1.8
TJ = 25
Pulse Width=300uS
1% Duty Cycle
INSTANTANEOUS FORWARD VOLTAGE, (V)
FIG. 5 - TEST CIRCUIT DIAGRAM AND REVERSE RECOVERY TIME CHARACTERISTIC
50
NONINDUCTIVE
10
NONINDUCTIVE
trr
+0.5A
(-)
(+)
25 Vdc
(approx)
(-)
D.U.T
0
PULSE
GENERATOR
(NOTE 2)
-0.25A
1
NON-
INDUCTIVE
OSCILLOSCOPE
(NOTE 1)
(+)
-1.0A
NOTES:
1 Rise Time = 7ns max. Input Impedance =
1 megohm. 22pF.
2. Rise Time = 10ns max. Source Impedance =
50 ohms.
1cm
SET TIME BASE FOR
50/100 ns/cm
RECTRON
PACKAGING OF DIODE AND BRIDGE RECTIFIERS
BULK PACK
PACKAGE
R-3
PACKING CODE
-B
EA PER BOX INNER BOX SIZE
(mm)
500
CARTON SIZE EA PER CARTON
(mm)
415*220*255
25,000
GROSS
WEIGHT(Kg)
16.17
192*75*21
REEL PACK
PACKAGE
R-3
PACKING
EA PER EA PER COMPONENT TAPE SPACE REEL DIA CARTON SIZE EA PER
GROSS
SPACE
INNER
REEL
CARTON WEIGHT(Kg)
CODE
(mm)
(mm)
(mm)
(mm)
BOX
-T
3,000
3,000
5.0
52
330
355*350*335
12,000
10.60
Marking Description
Plant - code
V Y M
Rectron Logo
Part No.
FR25X
Cathode Band
Year – code
(Y: Last digit of year&
A:2010,B:2011…)
Month – code
(M:0~9,O,N,D)
Voltage-code
1-------50V
2-------100V
3-------200V
4-------400V
5(P)---600V
6-------800V
7(P)---1000V
DISCLAIMER NOTICE
Rectron Inc reserves the right to make changes without notice to any product
specification herein, to make corrections, modifications, enhancements or other
changes. Rectron Inc or anyone on its behalf assumes no responsibility or liabi-
lity for any errors or inaccuracies. Data sheet specifications and its information
contained are intended to provide a product description only. "Typical" paramet-
ers which may be included on RECTRON data sheets and/ or specifications ca-
n and do vary in different applications and actual performance may vary over ti-
me. Rectron Inc does not assume any liability arising out of the application or
use of any product or circuit.
Rectron products are not designed, intended or authorized for use in medical,
life-saving implant or other applications intended for life-sustaining or other rela-
ted applications where a failure or malfunction of component or circuitry may di-
rectly or indirectly cause injury or threaten a life without expressed written appr-
oval of Rectron Inc. Customers using or selling Rectron components for use in
such applications do so at their own risk and shall agree to fully indemnify Rect-
ron Inc and its subsidiaries harmless against all claims, damages and expendit-
ures.
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