Diodes 1N4933, 1N4937 User Manual

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Features

• Diffused Junction

• Fast Switching for High Efficiency

• High Current Capability and Low Forward Voltage Drop

• Surge Overload Rating to 30A Peak

• Low Reverse Leakage Current

• Lead Free Finish, RoHS Compliant (Note 4)

Mechanical Data

• Case: DO-41

• Case Material: Molded Plastic. UL Flammability Classification Rating

94V-0

• Moisture Sensitivity: Level 1 per J-STD-020D

• Terminals: Finish - Bright Tin. Plated Leads Solderable per MIL-

STD-202, Method 208

• Polarity: Cathode Band

• Mounting Position: Any

• Ordering Information: See Page 2

• Marking: Type Number

• 0.35 grams (approximate)

1N4933 - 1N4937

1.0A FAST RECOVERY RECTIFIER

Dim

DO-41 Plastic
Min Max

A 25.40
B 4.06 5.21
C 0.71 0.864
D 2.00 2.72
All Dimensions in mm

⎯

Maximum Ratings and Electrical Characteristics @T

Single phase, half wave, 60Hz, resistive or inductive load.
For capacitive load, derate current by 20%.

Characteristic Symbol 1N4933 1N4934 1N4935 1N4936 1N4937 Unit

Peak Repetitive Reverse Voltage
Working Peak Reverse Voltage
DC Blocking Voltage (Note 5)

RMS Reverse Voltage

Average Rectified Output Current (Note 1) @ TA = 75°C IO
Non-Repetitive Peak Forward Surge Current 8.3ms

Single Half Sine-Wave Superimposed on Rated Load
Forward Voltage Drop @ IF = 1.0A VFM
Peak Reverse Current @TA = 25°C

at Rated DC Blocking Voltage (Note 5) @ TA = 100°C
Reverse Recovery Time (Note 3)

Typical Total Capacitance (Note 2)

Typical Thermal Resistance Junction to Ambient

Operating and Storage Temperature Range

Notes: 1. Leads maintained at ambient temperature at a distance of 9.5mm from the case.

DS26002 Rev. 7 - 2

2. Measured at 1.0MHz and applied reverse voltage of 4.0V DC.

3. Measured with I

4. EU Directive 2002/95/EC (RoHS). All applicable RoHS exemptions applied, see EU Directive 2002/95/EC Annex Notes.

5. Short duration pulse test used to minimize self-heating effect.

= 0.5A, IR = 1A, Irr = 0.25A.

F

V

RRM

V

RWM

VR

V

R(RMS)

I

FSM

IRM

trr

CT

R

JA

θ

T

J, TSTG

1 of 2

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= 25°C unless otherwise specified

A

50 100 200 400 600 V

35 70 140 280 420 V

1.0 A
30 A

1.2 V

5.0

100
200 ns

15 pF

100 °C/W

-65 to +150

1N4933-1N4937

© Diodes Incorporated

μA

°C

RAGE FOR

R

REC

T

F

CUR

RENT

TANT

O

U

O

R

R

CUR

RENT

P

O

RWAR

URGE CUR

RENT

C TOT

CAPACITANC

F

1.0

(A)

0.8

20

(A)

10

IED
I

D
WA

(AV)

I, AVE

(A)

D S

0.6

0.4

0.2

0

0

30

20

10

PC Board Mounted

9.5mm Lead Lengths

25 50 75 100 125 150

T , AMBIENT TEMPERA TURE (ºC)

A

Fig. 1 Forward Current Derating Curve

Pulse Width

8.3ms Single Half
Sine-Wave

175

D

1.0

WA

S F

0.1

ANE

T = 25°C

I, INS

F

0.01

Pulse Width = 300µs

0.6 0.8 1.0 1.2 1.4 1.6
V , INSTANTANEOUS FORWARD VOLTAGE (V)

F

Fig. 2 Typical Forward Characteristics

100

)
E (p

10

AL

T

j

EAK F

0

FSM

I,

110

NUMBER OF CYCLES AT 60 Hz

Fig. 3 Max Non-Repetitive Peak Forward Surge Current

100

1

110100

V , DC REVERSE VOLTAGE (V)

R

Fig. 4 Typical Total Capacitance

Ordering Information (Note 6)

Device Packaging Shipping

1N4933-T DO-41 5K/Tape & Reel, 13-inch
1N4934-T DO-41 5K/Tape & Reel, 13-inch
1N4935-T DO-41 5K/Tape & Reel, 13-inch
1N4936-T DO-41 5K/Tape & Reel, 13-inch
1N4937-T DO-41 5K/Tape & Reel, 13-inch

Notes: 6. For packaging details, visit our website at http://www.diodes.com/datasheets/ap02008.pdf.

Diodes Incorporated and its subsidiaries reserve the right to make modifications, enhancements, improvements, corrections or other changes
without further notice to any product herein. Diodes Incorporated does not assume any liability arising out of the application or use of any product
described herein; neither does it convey any license under its patent rights, nor the rights of others. The user of products in such applications shall
assume all risks of such use and will agree to hold Diodes Incorporated and all the companies whose products are represented on our website,
harmless against all damages.

Diodes Incorporated products are not authorized for use as critical components in life support devices or systems without the expressed written
approval of the President of Diodes Incorporated.

IMPORTANT NOTICE

LIFE SUPPORT

DS26002 Rev. 7 - 2

2 of 2

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1N4933-1N4937

© Diodes Incorporated