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V1.0

08/02/13

Diode

Ultra Fast

Features:

• High efficiency, low VF

• High current capability

• High reliability

• High surge current capability

• Low power loss

Specifications:

Mechanical Data:

Cases

: Moulded plastic

Lead

: Pure tin plated, lead free, solderable per MIL-STD-202, Method 208 guaranteed

Polarity

: Colour band denotes cathode end

High temperature soldering guaranteed

: 260°C/10 seconds/0.375ʺ, (9.5mm) lead lengths at 5lbs., (2.3kg) tension

Weight

: 1.2g

Maximum Ratings and Electrical Characteristics

Rating at 25°C ambient temperature unless otherwise specified.

Single phase, half wave, 60Hz, resistive or inductive load.

For capacitive load, derate current by 20%.

Type Number

Symbol

31DF4

31DF6

Units

Maximum Recurrent Peak Reverse Voltage

Vrrm

400

600

V

Maximum RMS Voltage

Vrms

280

420

Maximum DC Blocking Voltage

Vdc

400

600

Maximum Average Forward Rectified Current

0.375 (9.5mm) Lead Length at Ta = 29°C

(Note 1)

Tl = 109°C

I(av)

1.2

3

A

Peak Forward Surge Current, 8.3ms Single

Half Sine-wave Superimposed on Rated

Load (JEDEC method)

Ifsm

45

Maximum Instantaneous Forward Voltage

at 3A

Vf

1.7

V

Maximum DC Reverse Current at Ta = 25°C

at Rated DC Blocking Voltage at Ta = 125°C

Ir

20

100

μA

Note 1. Without Fin or PC Board.