SF21 – SF26 5-3 © 1999 Won-Top Electronics
SF21 – SF26
2.0A SUPER-FAST RECTIFIER
Features
! Diffused Junction
! Low Forward Voltage Drop
! High Current Capability A B A
! High Reliability
! High Surge Current Capability
Mechanical Data C
! Case: Molded Plastic D
! Terminals: Plated Leads Solderable per
MIL-STD- 202, Met hod 208
! Polarity: Cathode Band
! Weight: 0.40 grams (approx.)
! Mounting Position: Any
! Marking: Type Number
Maximum Ratings and Electrical Characteristics @TA=25°C unless otherwise specified
Single Phase, half wave, 60Hz, resistive or inductive load.
For capacitive load, derat e current by 20%.
Characteristic Symbol SF21 SF22 SF23 SF24 SF25 SF26 Unit
Peak Repetit i ve Revers e Voltage
Working Peak Reverse Voltage
DC Blocking Voltage
VRRM
VRWM
VR50 100 150 200 300 400 V
RMS Reverse Voltage VR(RMS) 35 70 105 140 210 280 V
Average Rectified Output Current
(Note 1) @T
A = 55°C IO2.0 A
Non-Repetiti ve P eak Forward Surge Current 8.3ms
Single half sine-wave superimposed on rated load
(JEDEC Method) IFSM 50 A
Forward Voltage @IF = 2.0A VFM 0.95 1.3 V
Peak Reverse Current @T
A = 25°C
At Rated DC Blocking Voltage @TA = 100°C IRM 5.0
100 µA
Reverse Recovery Time (Note 2) trr 35 nS
Typi cal Junction Capacitance (Note 3) Cj60 30 pF
Operating Temperature Range Tj-65 to +125 °C
Storage Temperature Range TSTG -65 to +150 °C
*Glass passivated forms are available upon request
Note: 1. Leads maintained at ambient temperat ure at a distanc e of 9.5mm from the case
2. Measured with IF = 0.5A, IR = 1.0A, IRR = 0.25A. See figure 5.
3. Measured at 1.0 MHz and applied reverse volt age of 4.0V D.C.
WTE
PO WER SEM ICO NDUC TO RS
DO-15
Dim Min Max
A25.4 —
B5.50 7.62
C0.71 0.864
D2.60 3.60
All Dimensions in mm
SF21 – SF26 5-4 © 1999 Won-Top Electronics
0
0.4
0.8
1.2
1.6
2.0
25 50 75 100 125 150 175 200
I , AVERAGE FWD RECTIFIED CURRENT (A)
(AV)
T , AMBIENT TEMPERATURE ( C)
Fig. 1 Forward Current Derating Curve
A°
Single phase half-wave
60 Hz resistive or inductive load
0.01
0.1
1.0
10
0.6 0.8 1.0 1.2 1.4
I , INSTANTANEOUS FORWARD CURRENT (A)
F
V , INSTANTANEOUS FORWARD VOLTAGE (V)
Fig. 2 Typical Forward Characteristics
F
T = 25 C
j°
Pulse width = 300 sµ
SF21 -SF24
SF25 -SF26
1
10
100
1 10 100
C , CAPACITANCE (pF)
j
V , REVERSE VOLTAGE (V)
Fig. 4 Typical Junction Capacitance
R
T = 25 C
f = 1.0MHz
j°
SF25 -SF26
SF21 -SF24
50V DC
Approx
50 NI (Non-inductive)Ω10 NIΩ
1.0
NI
ΩOscilloscope
(Note 1)
Pulse
Generator
(Note 2)
Device
Under
Test
t
rr
Settimebasefor5/10ns/cm
+0.5A
0A
-0.25A
-1.0A
Notes:
1. Rise Time = 7.0ns max. Input Impedance = 1.0M , 22pF.
2. Rise Time = 10ns max. Input Impedance = 50 .
Ω
Ω
Fig. 5 Reverse Recovery Time Characteristic and Test Circuit
(+)
(+)
(-)
(-)
I , PEAK FORWARD SURGE CURRENT (A)
FSM
10
20
40
60
1 10 100
NUMBER OF CYCLES AT 60 Hz
Fig. 3 Peak Forward Surge Current
