Reverse Voltage: 50 to 1000 Volts
Forward Current: 1 Amp
RoHS Device
Halogen Free
Features
- Low profile package.
- For surface mounted applications.
- High efficiency.
- Glass passivated chip junction.
- Easy to pick and place.
SMD Ultra Fast Recovery Rectifiers
Page 1
REV:A
US1A-HF Thru. US1M-HF
Comchip Technology CO., LTD.
Company reserves the right to improve product design , functions and reliability without notice.
QW-JU008
Mechanical data
- Case: SMA
- Terminals: Solderable per MIL-STD-750,
method 2026. Circuit Diagram
SMA/DO-214AC
Dimensions in inches and (millimeter)
Cathode Anode
Maximum Ratings and Electrical Characteristics
Notes: 1. Measured with IF = 0.5A, IR = 1A, Irr = 0.25A.
2. P.C.B. mounted with 2.0" X 2.0" (5 X 5 cm) copper pad areas.
Ratings at 25°C ambient temperature unless otherwise specified.
Single phase, half wave, 60Hz resistive or inductive load, for capacitive load, derate by 20%
Maximum DC blocking voltage
Parameter
Maximum repetitive peak reverse voltage
Maximum RMS voltage
Maximum average forward rectified current
50 V
35 V
V
1A
Units
50
VRRM
VRMS
VDC
IF(AV)
Symbols
100
70
100
400
400
1000
1000
600
420
600
280 700
Typical junction capacitance (Note 3) 15
A
V
µA
pF
ns
Peak forward surge current, 8.3ms
single half sine-wave superimposed
on rated load
Max. instantaneous forward voltage at 1A
Maximum DC reverse current Ta = 25°C
at rated DC blocking voltage Ta =125°C
IFSM
VF
Cj
1.0 1.3 1.65
50 75
30
5
100
IR
75
Typical thermal resistance (Note 2) °C/W
RθJA
Tj, Tstg
Operating and storage temperature range -55 ~ +150 °C
US1A
-HF
US1B
-HF
US1D
-HF
US1J
-HF
US1G
-HF
0.177(4.50)
0.157(4.00)
0.051(1.30)
0.063(1.60)
0.091(2.30)
0.106(2.70)
0.205(5.20)
0.185(4.70)
0.087(2.20)
0.075(1.90)
0.035(0.90)
0.059(1.50)
0.012(0.31)
0.006(0.15)
Typ.
0.012(0.30)
US1K
-HF
US1M
-HF
200
200
140
800
560
800
trr
Maximum reverse recovery time (Note 1)
at Tc =125°C
3. Measured at 1 MHz and applied reverse voltage of 4 V D.C
Rating and Characteristic Curves (US1A-HF Thru. US1M-HF)
Page 2
Comchip Technology CO., LTD.
Company reserves the right to improve product design , functions and reliability without notice.
Fig.2 - Typical Reverse Characteristics
Instantaneous Reverse Current, (μA)
Percent of Rated Peak Reverse Voltage, (%)
Fig.1 - Forward Current Derating Curve
Average Forward Current, (A)
Case Temperature, (°C)
Fig.3 - Typical Forward Characteristic
Instantaneous Forward Current, (A)
Instantaneous Forward Voltage, (V)
0 25 15050 75 100 125
0
1.0
0.2
0.4
0.8
1.2
0 20 40 60 80 140
0
0.1
1.0
10
100
0.5 2.51.0 1.5
0.001
1.0
10
0.01
Single phase half-wave 60Hz
resistive or inductive load
0.6
Fig.4 - Maximum Non-Repetitive Peak
Forward Surge Current
Peak Forward Surge Current, (A)
Number of Cycles
110 100
20
5
0
15
10
25
40
8.3ms single half sine wave
(JEDEC Method)
30
35
Fig.5 - Typical Transient Thermal Impedance
Transient Thermal Impedance, (°C/W）
Pulse Duration, t (sec）
0.1 110 1000.01
10
100
1
SMD Ultra Fast Recovery Rectifiers
TJ=25°C
TJ=125°C
100 120
US1G-HF
US1J-HF~US1M-HF
0.1
2.0
TJ=25°C
US1A-HF~US1D-HF
Fig.6 - Typical Junction Capacitance
Junction Capacitance, (pF)
Reverse Voltage, (V)
0.1 1 10 100
10
100
1
TJ=25°C
QW-JU008
REV:A
Page 3
Comchip Technology CO., LTD.
Company reserves the right to improve product design , functions and reliability without notice.
SMD Ultra Fast Recovery Rectifiers
QW-JU008
REV:A
Reel Taping Specification
Trailer Device Leader
.......
.......
....... ..............
....... ..............
End Start
Direction of Feed
400mm (min)160mm (min)
DO-214AC
(SMA)
SYMBOL
(mm)
(inch)
E F P P0P1T W W1
DO-214AC
(SMA)
SYMBOL
(mm)
(inch)
A B CdD D1D2
2.70 ± 0.10 13.00 ± 0.205.33 ± 0.10 2.35 ± 0.10 1.55 ± 0.05 330 ± 2.00
0.106 ± 0.004 0.210 ± 0.004 0.093 ± 0.004 0.061 ± 0.002 12.992 ± 0.079 0.512 ± 0.008
0.069 ± 0.004 0.217 ± 0.002 0.157 ± 0.004 0.157 ± 0.004 0.079 ± 0.004 0.008 ± 0.001 0.472 ± 0.012
1.75 ± 0.10 5.50 ± 0.05 4.00 ± 0.10 4.00 ± 0.10 2.00 ± 0.10 0.20 ± 0.03 12.00 ± 0.30 14.70 + 2.00
− 1.00
2.953 ± 0.039
75.00 ± 1.00
0.579 + 0.079
− 0.039
o
120
D
D1
D2
W1
Index hole
A
B
C
d
E
F
P
P0
P1
T
W
Page 4
Comchip Technology CO., LTD.
Company reserves the right to improve product design , functions and reliability without notice.
SMD Ultra Fast Recovery Rectifiers
QW-JU008
REV:A
Standard Packaging
Case Type
5,000
REEL
( pcs )
Reel Size
(inch)
13
REEL PACK
DO-214AC
(SMA)
Part Number Marking Code
Marking Code
US1A-HF US1A
US1B
US1D
US1G
US1J
XXXX
Cathode band
xxxx = Product type marking code
Product type marking code
Suggested PAD Layout
SIZE
(inch)
0.094
(mm)
2.40
1.80
1.80
0.071
0.071
6.00 0.236
A
B
C
D
DO-214AC (SMA)
Note: 1. The pad layout is for reference purpose only.
A
B
C
D
US1K
US1M
US1B-HF
US1D-HF
US1G-HF
US1J-HF
US1K-HF
US1M-HF
