Vishay 8AF Series Data Sheet

B-47

PRODUCT SUMMARY

I

F(AV)

Vishay High Power Products

Pressfit Rectifier Diodes, 50 A

FEATURES

• Convenient pressfit package

• Available with and without leads

• High surge capabilities

• Fully characterized bulletin

• RoHS compliant

• Designed and qualified for industrial level

50 A

8AF Series

RoHS

COMPLIANT

MAJOR RATINGS AND CHARACTERISTICS

PARAMETER TEST CONDITIONS VALUES UNITS

I

F(AV)

I

F(RMS)

I

FSM

2

I

t

2

I

√t 25 455 A2√s

V

RRM

T

J

T

C

50 Hz 714

60 Hz 747

50 Hz 2546

60 Hz 2324

Range 50 to 400 V

50 A

150 °C

79 A

- 65 to 195 °C

ELECTRICAL SPECIFICATIONS

VOLTAGE RATINGS

V

TYPE
NUMBER

8AF

, MAXIMUM REPETITIVE

VOLTAGE

CODE

05 50 75

1 100 150 7

2 200 300

4 400 500 5

RRM

PEAK REVERSE VOLTAGE

V

V

, MAXIMUM NON-REPETITIVE

RSM

PEAK REVERSE VOLTAGE

V

AT T

I

RRM

J

A

A2s

MAXIMUM

= TJ MAXIMUM

mA

7

5

Document Number: 93530 For technical questions, contact: [e-mail]
Revision: 17-Jun-08 1

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8AF Series

Vishay High Power Products

Pressfit Rectifier Diodes, 50 A

FORWARD CONDUCTION

PARAMETER SYMBOL TEST CONDITIONS VALUES UNITS

Maximum average forward current
at case temperature

Maximum RMS forward current I

Maximum peak, one cycle forward,
non-repetitive surge current

Maximum I

Maximum I

2

t for fusing I2t

2

√t for fusing I2√t t = 0.1 to 10 ms, no voltage reapplied 25 455 A2√s

Low level value of threshold voltage V

High level value of threshold voltage V

Low level value of forward slope resistance r

High level value of forward slope resistance r

Maximum forward voltage drop V

I

F(AV)

F(RMS)

I

FSM

F(TO)1

F(TO)2

f1

f2

FM

180° conduction, half sine wave

t = 10 ms

t = 8.3 ms 747

t = 10 ms

t = 8.3 ms 628

t = 10 ms

t = 8.3 ms 2324

t = 10 ms

t = 8.3 ms 1643

(16.7 % x π x I
(π x I

F(AV)

(16.7 % x π x I
(π x I

F(AV)

TJ = 25 °C, IFM = π x rated I

No voltage
reapplied

100 % V
reapplied

No voltage
reapplied

100 % V
reapplied

< I < π x I

F(AV)

< I < 20 x π x I

< I < π x I

F(AV)

< I < 20 x π x I

RRM

RRM

F(AV)

F(AV)

Sinusoidal half wave,
initial T

=

J

maximum

T

J

), TJ = TJ maximum 0.60

F(AV)

), TJ = TJ maximum 0.68

), TJ = TJ maximum 6.66

F(AV)

), TJ = TJ maximum 6.25

F(AV)

50 A

150 °C

79 A

714

600

2546

1800

1.45 V

A

A2s

V

mΩ

THERMAL AND MECHANICAL SPECIFICATIONS

PARAMETER SYMBOL TEST CONDITIONS VALUES UNITS

Maximum junction operating
and storage temperature range

Maximum thermal resistance,
junction to case

Typical thermal resistance,
case to heatsink

Approximate weight

Case style See dimensions - link at the end of datasheet B-47

Note

(1)

Mounting: A 12.6 ± 0.02 mm (0.496 to 0.497") diameter hole should be drilled in heatsink, the leading edge chamfered to 0.038 mm
(0.015") x 45°. The autodiode should then be press fitted, ensuring that the sides of the autodiode are kept parallel to the sides of the hole.

, T

T

J

Stg

R

thJC

DC operation 0.60

- 65 to 195 °C

K/W

R

thCS

As per mounting details, see note

(1)

0.50

10 g

0.36 oz.

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Document Number: 93530

2 Revision: 17-Jun-08

8AF Series

ΔR

CONDUCTION

thJC

Pressfit Rectifier Diodes, 50 A

Vishay High Power Products

CONDUCTION ANGLE SINUSOIDAL CONDUCTION RECTANGULAR CONDUCTION TEST CONDITIONS UNITS

180°

120°

90°

60°

30°

0.042 0.026

0.045 0.043

0.06 0.06

0.10 0.10

0.15 0.15

T

= TJ maximum K/W

J

Note

• The table above shows the increment of thermal resistance R

200

190

180

170

8AF Series
R (DC) = 0.6 K/W

thJC

Conductio n Angle

when devices operate at different conduction angles than DC

thJC

200

190

180

170

8AF Series
R (DC) = 0.6 K/W

thJC

Conduction Period

160

150

Maximum Allo wable Case Te mperatu re (°C)

140

0 5 10 15 20 25 30 35 40 45 50 55

Average Forward Current (A)

30°

60°

90°

120°

180°

160

150

Maximum Allowable Case Temperature (°C)

140

0 1020304050607080

Average Forward Current (A)

30°

60°

90°

120°

180°

Fig. 1 - Current Ratings Characteristics Fig. 2 - Current Ratings Characteristics

80

180°
120°

70

60

50

40

30

20

10

Maximum Average Forward Power Loss (W)

90°
60°
30°

0

0102030405060

Average Forward Current (A)

RMS Limit

Cond ucti on Angl e

8AF Series
T = 195°C

J

2

3

5

1

0

1

5

0 25 50 75 100 125 150

Max i mum Al lowab le Ambi ent Tempe rat ur e (°C )

R

t

h

S

1

K

/

K

/

W

K

/

W

K

K

/

W

A

.

5

K

W

/

W

=

/

1

W

K

/

W

­D

e

l

t

a

R

Fig. 3 - Forward Power Loss Characteristics

DC

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Revision: 17-Jun-08 3

8AF Series

Vishay High Power Products

90

DC

80

180°
120°

70

90°

60

60°
30°

50

40

30

20

10

Maximum Average Forward Power Loss (W)

0

0 1020304050607080

Average Forward Current (A)

700

At Any Rated Load Condition And With

650

Rated V Applied Following Surge.

600

RRM

550

500

450

400

350

300

250

8AF Series

200

Peak Half Sine Wave Forward Cur rent (A)

150

110100

Number Of Equal Ampli tude Half Cycl e Current Pulses (N)

Fig. 5 - Maximum Non-Repetitive Surge Current

Initial T = 195°C

J

@ 60 Hz 0.0083 s
@ 50 Hz 0.0100 s

Pressfit Rectifier Diodes, 50 A

R

t

h

S

A

1

2

RMS Limit

Conducti on Period

3

5

1

0

8AF Series
T = 195°C

J

1

5

0255075100125150

Maximum Allowable Ambient Temperature (°C)

Fig. 4 - Forward Power Loss Characteristics

=1

.

5

K

/

W

K

/

W

K

/

W

K

/

W

K

/

W

K

K

/

/

W

W

­D

e

1000

100

Instantaneous Forward Current (A)

Fig. 7 - Forward Voltage Drop Characteristics

l

t

a

R

8AF Series

10

T = 25°C

J

T = 195°C

J

1

01234567

Instantaneous Forward Voltage (V)

750

Max i mum Non Repe tit ive Sur ge Cur ren t

700

Versus Pulse Train Duration.

650

600

550

No Voltage Reapplied

Rated V Reapplied

Initial T = 195 °C

J

RRM

1

Steady State Value

(DC Operation)

thJC

500

450

0.1

400

350

300

250

8AF Series

200

Peak Half Sine Wave Forward Current (A)

150

0.01 0.1 1

Pulse Train Duration (s)

Fig. 6 - Maximum Non-Repetitive Surge Current

Transient Thermal Impedance Z (K/W)

0.01

0.00 1 0. 01 0.1 1 10

Square Wave Pulse Duration (s)

Fig. 8 - Thermal Impedance Z

8AF Series

thJC

Characteristics

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Document Number: 93530

4 Revision: 17-Jun-08

8AF Series

Pressfit Rectifier Diodes, 50 A

Vishay High Power Products

ORDERING INFORMATION TABLE

Device code

Dimensions http://www.vishay.com/doc?95330

8AF 4 N LV

1324

- Essential part number

1

- Voltage code x 100 = V

2

N = Normal polarity (cathode to case)

-

3

R = Reverse polarity (anode to case)

PP = Without lead

-

4

LH = Horizontal lead

LV = Vertical lead

LINKS TO RELATED DOCUMENTS

(see Voltage Ratings table)

RRM

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DIMENSIONS in millimeters (inches)

6 (0.24)

2.4 (0.09)

0.5 (0.02)

5 (0.20)

0.9 (0.03)

R 0.4 (0.02)

7 (0.28)

Ø 12.77/13.27

(Ø 0.50/0.52)

15.8 (0.62)

12.5 (0.49)

22.5 (0.89)

16.5 (0.65)

Outline Dimensions

Vishay Semiconductors

B-47

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Revision: 11-Mar-11 1