BY228 SERIES
CLAMPER / DAMPER GLASS PASSIVATED RECTIFIER
Reverse Voltage - 1500 Volts
* 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 TA=50°C with no thermal runaway ♦ Typical IR 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
E
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 TA= 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 TA=75°C Peak repetitive forward surge current at TA=75°C Maximum peak reverse current at rated peak reverse voltage Maximum reverse recovery time (NOTE 1) Maximum forward recovery time (NOTE 2) Typical junction capacitance (NOTE 2) Typical thermal resistance (NOTE 4) Operating junction temperature range Storage temperature range
NOTES: (1) Measured with IF=1.0A, IR=50mA, di/dt=50mA/µs (2) Measured with IF=5.0A with tr=0.1µs (3) Measured at 1.0 MHZ 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
VRSM VRRM VRMS VDC I(AV) IFSM VF IFWM IFRM IR trr tfr CJ RΘJA TJ TSTG TA=25°C TJ=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
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
TJ=TJ 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
TA=75°C
INSTANTANEOUS FORWARD CURRENT, AMPERES
MAXIMUM PEAK REPETITIVE FORWARD CURRENT, ApK
1
TJ=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
TJ=25°C f=1.0 MHz
TJ=125°C
1
0.1
TJ=25°C
0.01 0 20 40 60 80 100
PERCENT OF RATED PEAK REVERSE VOLTAGE, %
10
1
10
REVERSE VOLTAGE, VOLTS
100
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