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SF21

THRU

SF26

2.0 Amp Super Fast 

Rectifier 

50 to 400 Volts 

Features

 

• 

 High reliability

 

• 

 High current capability

 

• 

 Low forward voltage drop

 

• 

 High surge capability

 

Maximum Ratings 

• 

 Operating Temperature: -55

°

C to +125

°

• 

 Storage Temperature: -55

°

C to +150

°

C

 

• 

 For capacitive load, derate current by 20%

 

MCC 

Part Number 

Maximum 

Recurrent 

Peak Reverse 

Voltage 

Maximum 

RMS 

Voltage 

Maximum DC 

Blocking 

Voltage 

SF21 50V 35V 50V 

SF22 100V 70V 100V 

SF23 150V 105V 150V 

SF24 200V 140V 200V 

SF25 300V 210V 300V 

SF26 400V 280V 400V 

Electrical Characteristics @ 25

°

C Unless Otherwise Specified 

Average Forward 

Current 

I

F(AV)

 2.0A T

C

 = 55

°

Peak Forward Surge 

Current 

I

FSM

 50A 8.3ms, half sine 

Maximum 

Instantaneous 

Forward Voltage 

SF21-SF24 

SF25-SF26 

V

F

 

0.95V 

1.3V 

I

FM

  = 2.0A;  

T

C

 = 25

°

Maximum DC 

Reverse Current At 

Rated DC Blocking 

Voltage 

I

R

 

5.0uA 

100uA 

T

C

 = 25

°

T

C

 = 100

°

Typical Junction 

Capacitance 

SF21-SF24 

SF25-SF26 

C

J

 

60pF 

30pF 

Measured at 

1.0MHz, V

R

=4.0V 

Maximum Reverse 

Recovery Time 

T

RR

 35nS 

I

F

=0.5A, I

R

=1.0A, 

I

RR

=0.25A 

Pulse Test: Pulse width 300 usec, Duty cycle 1%. 

A

B

C

D

D

Cathode

Mark

DIMENSIONS

INCHES

MM

DIM

MIN

MAX

MIN

MAX

NOTE

A

.230

.300

5.80

7.60

B

.104

.140

2.60

3.60

C

.026

.034

.70

.90

D

1.000

---

25.40

---

DO-15

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mccsemi

.com

  omponents

21201 Itasca Street Chatsworth



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M C C

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Average Forward Rectified Current Per Leg -  Amperes versus 

Case Temperature  - 

°

C

 

Figure 3 

Forward Derating Curve

 

0

 

150

 

25

 

50

 

75

 

100

 

0

 

0.5 

1.0

 

1.5 

Single Phase, Half Wave 

60Hz Resistive or Inductive Load

 

Amps

 

°

C

 

125

 

2.0

 

2.5 

3.0

 

Instantaneous Reverse Current - uAmperes versus 

Percent of Rated Peak Reverse Voltage - %

Figure 1 

Typical Reverse Characteristics 

 

 

 

 

1000

 

uAmps

 

20

 

40

 

60

 

80

 

100

 

120

 

1

 

 

 

 

10

 

 

 

 

100

 

 

T

j

=100

°

C

 

Volts

 

Instantaneous Forward Current - Amperes versus 

Instantaneous Forward Voltage - Volts

 

Figure 2 

Typical Forward Characteristics 

 

 

 

 

10

 

Amps

 

  6

 

  8

 

10

 

12

 

14

 

16

 

0.01

 

 

 

 

0.1

 

 

 

 

1

 

 

Volts

 

T

j

=25

°

C

 

SF21-SF24

 

SF25 -SF26

 

M C C

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mccsemi

.com

SF21 thru SF26

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t

rr

 

+0.5A

 

0

 

-0.25

 

-1.0

 

1cm

 

Set Time Base for 20/100ns/cm

 

25Vdc

 

1

 

50

 

10

 

Oscilloscope 

Note 1

 

Pulse  

Generator 

Note 2

 

Notes: 

1. Rise Time = 7ns max. 

Input impedance = 1 megohm, 22pF 

2. Rise Time = 10ns max. 

Source impedance = 50 ohms 

3. Resistors are non-inductive

 

Figure 6

Reverse Recovery Time Characteristic And Test Circuit Diagram

 

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.com

M C C

F

igure 4

Maximum Non-repetitive Forward Surge Current

PEAK

 FO

R

W

ARD

 SURGE

 CURREN

T.

 (A)

1 2 5 10 20 100

50

0

10

40

30

20

50

60

NUMBER OF CYCLES AT 60Hz

8.3ms Single Half Sine Wave

JEDEC Method

Figure 5

JUNCTION

 CA

PACI

TANCE.(pF)

.1 .5 1 5

2 10 20 50 100 200 500 1000

0

25

50

75

100

125

150

REVERSE VOLTAGE. (V)

Tj=25 C

0

SF21~

SF24

SF25~SF2

6

Typical Junction Capacitance

SF21 thru SF26