US1A thru US1M
Surface Mount Glass Passivated High Efficiency Rectifiers
Reverse Voltage 50 to 1000V Forward Current 1.0A
FEATURES
* Plastic package has Underwriters Laboratories
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Flammability Classification 94V-0
Ideally suited for use in very high frequency switching
power supplies, inverters and as free wheeling diodes
Ultrafast recovery time for high efficiency
Excellent high temperature switching
Soft recovery characteristics
Cavity-free glass passivated junction
High temperature soldering guaranteed:
260°C/10 seconds, 0.375" (9.5mm) lead length,
5 lbs. (2.3kg) tension
Mechanical Data
Case: JEDEC DO-214AC, molded plastic over glass body
Terminals: Plated axial leads, solderable per
MIL-STD-750, Method 2026
Polarity: Color band denotes cathode end
Mounting Position: Any
Weight:0.0023 oz., 0.065 g
Handling precautin:None
We declare that the material of product compliance
with ROHS requirements
1.Electrical Characteristic
Maximum Ratings & Thermal Characteristics Ratings at 25°C ambient temperature unless otherwise specified.
Parameter Symbol
symbol
US1A US1B US1D US1G US1J US1K
Marking
HF1
HF2
HF3
HF5
HF6
HF7
V
RRM
50
100
200
400
600
800
Maximum repetitive peak reverse voltage
Maximum RSM voltage
Maximum DC blocking voltage
Maximum average forward rectified current
0.375" (9.5mm) lead length at T
A
= 75°C
Peak forward surge current 8.3ms single half sine-
wave superimposed on rated load (JEDEC Method)
Maximum full load reverse current, full cycle
average,0.375"(9.5mm) lead lengths at T
A
= 55°C
Typical thermal resistance (Note 2)
Operating junction and storage temperature range
V
RSM
V
DC
IF(AV)
I
FSM
IR(AV)
RθJA
TJ, TSTG
35
50
70
100
140
200
280
400
1.0
30
100
50
–50 to +150
420
600
560
800
US1M
HF8
1000
700
1000
Unit
V
V
V
A
A
µA
°C/W
°C
Electrical Characteristics Ratings at 25°C ambient temperature unless otherwise specified.
Parameter Symbol
symbol
US1A US1B US1D
V
F
1.00
Maximum instantaneous forward voltage at 1.0A
Maximum DC reverse current TA = 25°C
at rated DC blocking voltage TA = 100°C
IR
US1G
1.30
5.0
100
US1J
US1K
1.70
US1M
Unit
V
µA
50
Typical reverse recovery time (Note 1)
trr
Typical junction capacitance at 4.0V, 1MHz
CJ
NOTES:
1. IF = 0.5A, IR = 1.0A, IRR = 0.25A
2. Thermal resistance from junction to ambient at 0.375” (9.5mm) lead length, P.C.B. mounted
75
17
ns
PF
US1A thru US1M
2.Ratings and Characteristic Curves ( TA = 25°C unless otherwise noted )
Fig. 1
–
Forward Current Derating Curve
50
Average Forward Rectified Current (A)
60 Hz
Resistive or
Inductive Load
Fig. 2
–
Maximum Non-repetitive Peak
Forward Surge Current
TJ = TJ max
8.3ms Single Half Sine-wave
(JEDEC Method)
1.0
Average Forward Rectified Current (A)
40
30
20
10
0
1
0.5
0.375" (9.5mm) Lead Length
25
50 75 100 125 150 175
Ambient Temperature, °C
Fig 3.
–
Typical Instantaneous Forward
Characteristics
10
0
0
10
Number of Cycles at 60Hz
100
Fig 4.
–
Typical Reverse Characteristics
100
Instantaneous Reverse Current (µA)
Tj=125℃
Instantaneous Forward Current (A)
1.0
0.1
0.01
10
Tj=75℃
1.0
0.1
0.01
TJ = 25°C
Pulse width = 300µs
1% Duty Cycle
Tj=25℃
0.001
0.8
Transient thermal impedance(°C/W)
100
1.0
1.2
1.4
1.6
1.8
Instantaneous Forward Voltage (V)
Fig 5.
–typical
transient thermal
impedance
0
20
40
60
80
100
Percent of Rated Peak Reverse Voltage (%)
Fig 6.
–
Typical Junction Capacitance
10
Junction Capacitance (pF)
10
TJ = 25°C
f = 1.0 MHz
Vsig = 50mVp-p
1.0
0.1
0.01
0.1
1.0
10
t,Pulse duration,sec
100
1.0
0.1
1
10
Reverse Voltage (V)
100
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