SMD Schottky Barrier Rectifiers
Reverse Voltage: 40 to 200 Volts
Forward Current: 3.0 Amp
RoHS Device
Page 1
REV:B
SS34B-HF Thru. SS320B-HF
Maximum Ratings and Electrical Characteristics
Comchip Technology CO., LTD.
Halogen Free
Company reserves the right to improve product design , functions and reliability without notice.
Features
- Metal silicon junction, majority carrier conduction
- For surface mounted applications
- Low power loss, high efficiency
- High forward surge current capability
- For use in low voltage, high frequency inverters,
free wheeling, and polarity protection applications
Mechanical data
- Case: SMB
- Terminals: Solderable per MIL-STD-750, Method 2026
- Approx. Weight: 95mg / 0.0034oz
（2）P.C.B. mounted with 2.0" X 2.0" (5 X 5 cm) copper pad areas.
（1）Measured at 1 MHz and applied reverse voltage of 4 V D.C
SP-JB017
Dimensions in inches and (millimeter)
DO-214AA (SMB)
0.126 (3.20)
0.078 (1.99)
0.087 (2.20)
0.071 (1.80)
0.157 (4.00)
0.130 (3.30)
0.191 (4.85)
0.157 (4.00)
0.012 (0.31)
MAX.
0.220 (5.60)
0.197 (5.00)
0.063 (1.60)
0.028 (0.70)
0.008(0.21)
MAX.
Maximum DC blocking voltage
Maximum repetitive peak reverse voltage
Maximum RMS voltage
Maximum average forward rectified current
40
V
28
V
V
3.0
0.5
5
-55 ~ +150
A
A
V
mA
°C
40
Peak forward surge current,8.3ms
single half sine-wave superimposed
on rated Load (JEDEC method)
Max instantaneous forward voltage at 3 A
Maximum DC reverse current
at rated DC reverse voltage
Operating junction temperature range
T = 25°C
a
T =100°C
a
V
RRM
V
RMS
V
DC
I
F(AV)
I
FSM
V
F
I
R
T
j
T
stg
Storage temperature range
60
42
60
100
100
0.55 0.70 0.85
-55 ~ +150
°C
150
105
150
200
140
200
0.95
0.3
3
80
70
60
Typical thermal resistance
°C/W
R
θJA
Typical junction capacitance
pF
C
j
450 400
（1）
（2）
Ratings at 25 °C ambient temperature unless otherwise specified.Single phase, half wave,
60Hz resistive or inductive load, for capacitive load, derate by 20 %
SS34B SS36B SS310B SS315B SS320B
UnitsSymbolsParameter
Circuit Diagram
Cathode
Anode
RATING AND CHARACTERISTIC CURVES (SS34B-HF Thru. SS320B-HF)
Comchip Technology CO., LTD.
Page 2
SMD Schottky Barrier Rectifiers
Company reserves the right to improve product design , functions and reliability without notice.
SP-JB017
0.1
0
0.4 1.4
Fig.3 - Typical Forward Characteristic
Instantaneous Forward Current (A)
Instantaneous Forward Voltage (V)
1.0
10
0.60.2 0.8 1.0 1.2 1.81.6
40V
60V
100V
150V/200V
20
10 1001
30
40
50
20
60
80
70
Fig.5 - Maximum Non-Repetitive Peak
Forward Surge Current
Peak Forward Surge Current (A)
Number of Cycles at 60Hz
Fig.2 - Typical Reverse Characteristics
Instantaneous Reverse Current ( μA)
20 40 60 80
0
T =25
J
°C
T =100
J
°C
Percent of Rated Peak Reverse Voltage（%）
100
10
0
10
1
10
2
10
3
10
4
T =75
J
°C
40V~60V
100V~200V
0.6
1.2
1.8
2.4
3.0
3.5
0.0
25 50
75
100 125 150
Fig.1 - Forward Current Derating Curve
Average Forward Current (A)
0.01
100
1
10
100
Fig.6 - Typical Transient Thermal Impedance
Transient Thermal Impedance（°C/W)
t, Pulse Duration（sec）
0.1 1 10
Lead Temperature (°C)
Fig.4 - Typical Junction Capacitance
JunctionCapacitance (pF)
Reverse Voltage (V)
10
0.1 10
100
500
20
1001
1000
T =25
J
°C
200
40V~60V
100V~200V
90
8.3 ms Single Half Sine Wave
(JEDEC Method)
REV:B