TEXAS INSTRUMENTS 1N4933, 1N4937 Technical data

Features

Low forward voltage drop.

•

• High surge current capability.

• High reliability.

• High current capability.

Fast Rectifiers

1N4933 - 1N4937

COLOR BAND DENOTES CATHODE

1N4933-1N4937

DO-41

Absolute Maximum Ratings* T

Symbol

V

Maximum Repetitive Reverse Voltage 50 100 200 400 600 V

RRM

I

Average Rectified Forward Current,

F(AV)

I

Non-repetitive Peak Forward Surge Current

FSM

T

stg

.375 " lead length @ T

8.3 ms Single Half-Sine-Wave

Storage Temperature Range -50 to +150

Parameter

= 50°C

A

= 25°C unless otherwise noted

A

4933 4934 4935 4936 4937

Value

1.0 A
30 A

TJ Operating Junction Temperature -50 to +150

*These ratings are limiting values above which the serviceability of any semiconductor device may be impaired.

Thermal Characteristics

Symbol

PD Power Dissipation 2.5 W
R

θJA

Thermal Resistance, Junction to Ambient 50

Electrical Characteristics T

Symbol

VF Forward Voltage @ 1.0 A 1.2 V
trr Reverse Recovery Time

= 0.5 A, IR = 1.0 A, I

I

IR

CT Total Capacitance

F

Reverse Current @ rated V

= 4.0 V, f = 1.0 MHz

V

R

Parameter

Parameter

= 0.25 A

rr

R TA

= 25°C unless otherwise noted

A

= 25°C

= 125°C

T

A

Value

Device

4933 4934 4935 4936 4937

150 ns

5.0

100

12 pF

Units

°C

C

°

Units

C/W

°

Units

A

µ
µA

1N4933-1N4937, Rev. C2001 Fairchild Semiconductor Corporation

T ypical Characteristics

1N4933-1N4937

1

[A]

F

0.8

0.6

SINGLE PHASE
HALF WAVE

0.4

60HZ
RESISTIVE OR
INDUCTIVE LOAD

0.2

.375" 9.0 mm LE AD
LENGTHS

0

0 25 50 75 100 125 150 175

Average Rectified Forward Current, I

Ambient Temperature [ºC]

20
10

3

[A]

F

1

0.3

0.1

Forward Current, I

0.03

0.01

0.6 0.8 1 1.2 1.4 1.6 1.8 2

T = 25 C

T = 25 C

º

º

J

A

Pulse Width = 200

Pulse Width = 300
2% Dut y Cycle

2% Dut y Cycle

S

S

µµµµ

µµµµ

Forward Voltage, VF [V]

Figure 1. Forward Current Derating Curve Figure 2. Forward Voltage Characteristics

40

[A]

FSM

30

20

10

0

Peak Forward Surge Current, I

12 51020 50100

Number of Cycles at 60Hz

Figure 3. Non-Repetitive Surge Current

100

T = 100 C

º

A

10

[mA]

R

1

T = 25 C

T = 25 C

º

º

J

A

Reverse Current, I

0.1
0 20406080100120140

Percent of Rated Peak Reverse Voltage [%]

Figure 4. Reverse Current vs Reverse Voltage

20

10

[pF]

T

5

2

Total Capacitance, C

1

1 2 5 10 20 50 100

Reverse Voltage, VR [V]

Figure 5. Total Capacitance

50

Ω

NONINDUCTIVE

50V
(approx)

50Ω
NONINDUCTIVE

NOTES:

1. Rise time = 7.0 ns max; Input impedance = 1.0 megaohm 22 pf.

2. Rise time = 10 ns max; Source impedance = 50 ohms.

50Ω
NONINDUCTIVE

DUT

OSCILLOSCOPE
(Note 1)

(-)

Pulse
Generator
(Note 2)

(+)

Reverse Recovery Time Characterstic and Test Circuit Diagram

+0.5 A

trr

0

-0.25A

-1.0A

1.0cm SET TIME BASE FOR
5/ 10 ns/ cm

1N4933-1N4937, Rev. C2001 Fairchild Semiconductor Corporation