3 . De fin it io n s a n d Te rm s
(1) General-Purpose Rectifiers
ꢀꢀPlastic mold type
ꢀꢀNeeds meet to tape packed products
ꢀꢀVarious product line from IF = 0.7 A to 10 A ꢀꢀThe material used in the manufacture of these rectifiers is
94V-0, which has been approved by the UL.
ꢀꢀNeeds meet to lead formed products
(2) High-Speed Rectifiers
SBDs (Schottky Barrier Diodes)
ꢀꢀVoltage Rating: VRRM = 30 V, 40 V, 60 V and 120 V
ꢀꢀCurrent Rating: IO = 1 A to 30 A
ꢀꢀForward Voltage Drop:
VFM = 0.48 V typ. (0.55 V max)........VRRM = 40 V
VFM = 0.52 V typ. (0.58 V max)........VRRM = 60 V
VFM = 0.32 V typ. (0.37 V max)........VRRM = 30 V
VFM = 0.34 V typ. (0.40 V max)........VRRM = 30 V
V
FM = 0.8 V typ. (0.85 V max)..........VRRM = 120 V
V
V
FM = 0.42 V typ. (0.45 V max)........VRRM = 30 V
FM = 0.43 V typ. (0.47 V max)........VRRM = 30 V
All three types supports high-efficiency design of
switching power supplies with low VFM and low IR.
ꢀꢀCurrent Balance: Center-tap SBDs are monolithic in structure and capable of parallel operation.
HEDs (High-Efficiency Diodes)
ꢀꢀVoltage Rating: VRRM = 200, 300, 400 and 600 V
ꢀꢀCurrent Rating: IO = 1 to 30 A
ꢀꢀHigh-Speed Switching: Reverse Recovery Time (trr) = 35 ns max
ꢀꢀCurrent Balance: Center-tap SBDs are monolithic in structure and capable of parallel operation
S-FRDs (Super-Fast Recovery Diodes)
ꢀꢀVoltage Rating: VRRM = 400 V, 600 V, 800 V, 1000 V (high voltage)
ꢀꢀCurrent Rating: IF(AV) = 0.5 A to 5 A
ꢀꢀHigh-Speed Switching: Reverse recovery time (trr) ≤ 100 ns max
V-FRDs (Very-Fast Recovery Diodes)
ꢀꢀVoltage Rating: VRRM = 400 V, 600 V, 1000 V (high voltage)
ꢀꢀForward Voltage Drop: VFM = 0.95 V typ. (1.1 V max).....VRRM = 400 V
VFM = 1.05 V typ. (1.2 V max).....VRRM = 600 V
VFM = 1.20 V typ. (1.5 V max).....VRRM = 1000 V
High voltage and low forward voltage drop
ꢀꢀHigh-Speed Switching: Reverse recovery time (trr) ≤ 200 ns max
(3) Various Types of Rectifiers
30
Characteristics (intended value)
20
Forward Voltage
Applied Frequancy
SBD
SBD
Characteristics
SBD
0.3 V to 0.85 V
200 kHz or more
Up to 200 kHz
Up to 100 kHz
Up to 60 kHz
Up to 20 kHz
HED
5
3
General-
Purpose
HED
0.98 V to 4.0 V
1.2 V to 3.3 V
1.1 V to 1.5 V
1.2 V to 2.0 V
S-FRD
V-FRD
FRD
S-FRD
V-FRD
FRD
30
40 60 100 120
200
400
600
1000
1500
1700
General-
Purpose
0.95 V to 1.2 V
Up to 3 kHz
Voltage (V)
8
TOSHIBA [ TOSHIBA ]
