1N4933 - 1N4937
1.0A FAST RECOVERY RECTIFIER
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Features
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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
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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

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 MILSTD-202, Method 208
Polarity: Cathode Band
Mounting Position: Any
Ordering Information: See Page 2
Marking: Type Number
0.35 grams (approximate)

Dim

Maximum Ratings and Electrical Characteristics
Single phase, half wave, 60Hz, resistive or inductive load.
For capacitive load, derate current by 20%.
Characteristic

@TA = 25°C unless otherwise specified

Symbol
VRRM
VRWM
VR

1N4933

1N4934

1N4935

1N4936

1N4937

Unit

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

50

100

200

400

600

V

RMS Reverse Voltage

VR(RMS)

35

70

140

280

420

V

IO

1.0

A

Non-Repetitive Peak Forward Surge Current 8.3ms
Single Half Sine-Wave Superimposed on Rated Load

IFSM

30

A

Forward Voltage Drop @ IF = 1.0A

VFM

1.2

V

Peak Reverse Current @TA = 25°C
at Rated DC Blocking Voltage (Note 5) @ TA = 100°C

IRM

5.0
100

μA

Reverse Recovery Time (Note 3)

trr

200

ns

Typical Total Capacitance (Note 2)

CT

15

pF

RθJA

100

°C/W

TJ, TSTG

-65 to +150

°C

Average Rectified Output Current (Note 1) @ TA = 75°C

Typical Thermal Resistance Junction to Ambient
Operating and Storage Temperature Range
Notes:

1.
2.
3.
4.
5.

Leads maintained at ambient temperature at a distance of 9.5mm from the case.
Measured at 1.0MHz and applied reverse voltage of 4.0V DC.
Measured with IF = 0.5A, IR = 1A, Irr = 0.25A.
EU Directive 2002/95/EC (RoHS). All applicable RoHS exemptions applied, see EU Directive 2002/95/EC Annex Notes.
Short duration pulse test used to minimize self-heating effect.

DS26002 Rev. 7 - 2

1 of 2
www.diodes.com

1N4933-1N4937
© Diodes Incorporated

20

IF, INSTANTANEOUS FORWARD CURRENT (A)

I(AV), AVERAGE FORWARD RECTIFIED CURRENT (A)

1.0

0.8

0.6

0.4

0.2
PC Board Mounted
9.5mm Lead Lengths

10

1.0

0.1

Tj = 25°C
Pulse Width = 300µs

0.01

0
0

25

50

75

100

125

150

0.6

175

1.0

1.2

1.4

1.6

VF, INSTANTANEOUS FORWARD VOLTAGE (V)
Fig. 2 Typical Forward Characteristics

TA, AMBIENT TEMPERATURE (ºC)
Fig. 1 Forward Current Derating Curve

100

30
Pulse Width
8.3ms Single Half
Sine-Wave

CT TOTAL CAPACITANCE (pF)

IFSM, PEAK FORWARD SURGE CURRENT (A)

0.8

20

10

10

0

1

1

10

1

100

NUMBER OF CYCLES AT 60 Hz
Fig. 3 Max Non-Repetitive Peak Forward Surge Current

10
VR, DC REVERSE VOLTAGE (V)
Fig. 4 Typical Total Capacitance

100

Ordering Information (Note 6)
Device
1N4933-T
1N4934-T
1N4935-T
1N4936-T
1N4937-T
Notes:

Packaging
DO-41
DO-41
DO-41
DO-41
DO-41

Shipping
5K/Tape & Reel, 13-inch
5K/Tape & Reel, 13-inch
5K/Tape & Reel, 13-inch
5K/Tape & Reel, 13-inch
5K/Tape & Reel, 13-inch

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

IMPORTANT NOTICE
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.
LIFE SUPPORT
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.

DS26002 Rev. 7 - 2

2 of 2
www.diodes.com

1N4933-1N4937
© Diodes Incorporated