HER254 SYNSEMI [SynSemi, Inc.], HER254 Datasheet - Page 2

• Manufacturer Part Number: HER254
• Description: HIGH EFFICIENT RECTIFIER DIODES
• Manufacturer: SYNSEMI [SynSemi, Inc.]

Page 2 of 2
0.01
100
10
1.0
0.1
2.0
1.5
1.0
0.5
2.5
0
0
0
FIG.1 - REVERSE RECOVERY TIME CHARACTERISTIC AND TEST CIRCUIT DIAGRAM
FIG.2 - DERATING CURVE FOR OUTPUT
FIG.4 - TYPICAL FORWARD CHARACTERISTICS
60Hz RESISTIVE OR INDUCTIVE LOAD
Pulse Width = 300 s
HER251-HER255
0.2
RATING AND CHARACTERISTIC CURVES ( HER251 - HER258 )
25
AMBIENT TEMPERATURE, ( C)
2% Duty Cycle
FORWARD VOLTAGE, VOLTS
T
RECTIFIED CURRENT
0.4
J
NOTES : 1. Rise Time = 7 ns max., Input Impedance = 1 megaohm, 22 pF.
= 25 C
+
50
0.6
(approx)
50 Vdc
50
75
0.8
2. Rise time = 10 ns max., Source Impedance = 50 ohms.
3. All Resistors = Non-inductive Types.
1.0
100
HER256-HER258
1.2
1
125
D.U.T.
1.4
10
150
1.6
1.8
OSCILLOSCOPE
175
( NOTE 1 )
2.0
GENERATOR
( NOTE 2 )
PULSE
0.01
100
1.0
80
10
0.1
60
40
20
0
0
1
FIG.3 - MAXIMUM NON-REPETITIVE PEAK
FIG.5 - TYPICAL REVERSE CHARACTERISTICS
- 0.25 A
+ 0.5 A
- 1.0 A
20
2
PERCENT OF RATED REVERSE
NUMBER OF CYCLES AT 60Hz
FORWARD SURGE CURRENT
0
8.3 ms SINGLE HALF SINE WAVE
1 cm
40
4
VOLTAGE, (%)
6
SET TIME BASE FOR 25-35 ns/cm
60
Trr
10
T
T
J
J
= 100 C
Ta = 50 C
80
= 25 C
20
100
Rev. 02 : March 24, 2005
40
120
60 100
140