BY228 SERIES
CLAMPER / DAMPER GLASS PASSIVATED RECTIFIER
Reverse Voltage -
1500 Volts
*
E
D
Case Style G3
Forward Current -
2.5 Amperes
FEATURES
♦
High temperature metallurgically bonded construction
♦
Glass passivated cavity-free junction
♦
2.5 ampere operation
at T
A
=50°C with no
thermal runaway
♦
Typical I
R
less than 0.1µA
♦
Hermetically sealed package
♦
Capable of meeting environmental standards of
MIL-S-19500
♦
High temperature soldering guaranteed:
350°C/10 seconds, 0.375" (9.5mm) lead length,
5 lbs. (2.3kg) tension
P
A
T
E
N
T
1.0 (25.4)
MIN
0.250 (6.3)
0.170 (4.3)
DIA.
0.300 (7.6)
MAX.
0.052 (1.32)
0.048 (1.22)
DIA.
1.0 (25.4)
MIN
MECHANICAL DATA
Case:
Solid glass body
Terminals:
Solder plated axial leads, solderable per
MIL-STD-750, Method 2026
Polarity:
Color band denotes cathode end
Mounting Position:
Any
Weight:
0.04 ounce, 1.1 grams
Dimensions in inches and (millimeters)
*
Brazed-lead assembly is covered by Patent No. 3,930,306
MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS
Ratings at 25°C ambient temperature unless otherwise specified.
SYMBOLS
BY228
UNITS
Maximum non repetitive peak reverse voltage
Maximum repetitive peak reverse voltage
Maximum RMS voltage
Maximum DC blocking voltage
Maximum average forward rectified current
0.375” (9.5mm) lead length at T
A
= 50°C
Peak forward surge current 10ms single half sine-wave
superimposed on rated load
Maximum instantaneous forward voltage at 2.5A
Working peak forward current at T
A
=75°C
Peak repetitive forward surge current at T
A
=75°C
Maximum peak reverse current
at rated peak reverse voltage
Maximum reverse recovery time
(NOTE 1)
Maximum forward recovery time
Typical junction capacitance
Typical thermal resistance
(NOTE 2)
V
RSM
V
RRM
V
RMS
V
DC
I
(AV)
I
FSM
V
F
I
FWM
I
FRM
I
R
t
rr
t
fr
C
J
R
ΘJA
T
J
T
STG
T
A
=25°C
T
J
=140°C
1650
1500
1050
1500
2.5
50.0
1.6
5.0
10.0
5.0
200
20.0
1.0
40.0
20.0
-65 to +150
-65 to +200
Volts
Volts
Volts
Volts
Amps
Amps
Volts
Amps
Amps
µA
µs
µs
pF
°C/W
°C
°C
(NOTE 2)
(NOTE 4)
Operating junction temperature range
Storage temperature range
NOTES:
(1) Measured with I
F
=1.0A, I
R
=50mA, di/dt=50mA/µs
(2) Measured with I
F
=5.0A with tr=0.1µs
(3) Measured at 1.0 MH
Z
and applied reverse voltage of 4.0 Volts
(4) Thermal resistance from junction to ambient at 0.375" (9.5mm) lead length,
P.C.B. mounted
4/98
RATINGS AND CHARACTERISTIC CURVES BY228 SERIES
FIG. 2 - MAXIMUM NON-REPETITIVE PEAK
FORWARD SURGE CURRENT
PEAK FORWARD SURGE CURRENT,
AMPERES
FIG. 1 - FORWARD CURRENT DERATING CURVE
3.0
AVERAGE FORWARD RECTIFIED
CURRENT,AMPERES
50 to 60 Hz
RESISTIVE OR
INDUCTIVE LOAD
0.375" (9.5mm) LEAD LENGTH
200
T
J
=T
J
max.
10ms SINGLE SINE WAVE
100
NO LOAD
2.0
1.0
RATED LOAD
0
0
25
50
75
100
125
150
175
10
1
AMBIENT TEMPERATURE,°C
10
NUMBER OF CYCLES AT 50 Hz
100
FIG. 3 -MAXIMUM PEAK REPETITIVE
FORWARD SURGE CURRENT
FIG. 4 - TYPICAL INSTANTANEOUS
FORWARD CHARACTERISTICS
100
30
10
T
A
=75°C
INSTANTANEOUS FORWARD CURRENT,
AMPERES
MAXIMUM PEAK REPETITIVE
FORWARD CURRENT, ApK
1
T
J
=25°C
PULSE WIDTH=300µs
1% DUTY CYCLE
0.1
10
1
10
DUTY CYCLE, PERCENT, %
100
0.01
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
INSTANTANEOUS FORWARD VOLTAGE, VOLTS
FIG. 5 - TYPICAL REVERSE CHARACTERISTICS
INSTANTANEOUS REVERSE CURRENT,
MICROAMPERES
FIG. 6 - TYPICAL JUNCTION CAPACITANCE
10
JUNCTION CAPACITANCE, pF
100
T
J
=25°C
f=1.0 MHz
T
J
=125°C
1
0.1
T
J
=25°C
0.01
0
20
40
60
80
100
PERCENT OF RATED PEAK REVERSE VOLTAGE, %
10
1
10
REVERSE VOLTAGE, VOLTS
100
嵌入式系统
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