step recovery 70 amp diodes

 Type number

Voltage

 Code

V RRM, maximum repetitive

peak reverse voltage

V

V RSM , maximum non- repetitive peak rev. voltage

V

I RRM max.

@ T J = T J max. mA

 SM70HF..

40

400

500

 30

80

800

900

120

1200

1300

140

1400

1500

160

1600

1700

200

2000

2100

Parameter

SM70HF..

Units

Conditions

I F(AV)               Max. average forward current   @ Case temperature

70

A

180° conduction, half sine wave

90

°C

IF(RMS)       Max. RMS forward current

79

A

DC @ TC = 75°C (04 to 20), TC = 36°C (25 to 32)

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

1200

A

t = 10ms

No voltage

reapplied

Sinusoidal    half wave,

Initial T = T max.

1200

t = 8.3ms

1000

t = 10ms

100% VRRM

reapplied

1050

t = 8.3ms

I 2 t   Maximum I 2 t for fusing

7000

A 2 s

t = 10ms

No voltage reapplied

6500

t = 8.3ms

5000

t = 10ms

100% V RRM

 reapplied

4500

t = 8.3ms

I2√t      Maximum I2√t for fusing

70000

A2√s

t = 0.1 to 10ms, no voltage reapplied

VF(TO)       Low level value of threshold voltage

0.80

V

TJ = 200°C

rf      Max. value of forward slope resistance

2.30

mΩ

VFM     Max. forward voltage drop

1.30

V

(IFM x π x IF(AV) (220A Peak), TJ = 25°C

Parameter

SM70HF..

Units

Conditions

T J

- 40 to 150

°C

Tstg

- 40 to 150

R thJC  Thermal Impedance, max.

0.45

K/W

DC operation

RthCS   Max. thermal resistance, case to

 heatsink

0.25

Mounting surface, smooth, flat and greased

T   Max. allowed mounting torque +0 -20%

3.5

Nm

Not lubricated threads

2.3

Lubricated threads

wt   Approximate weight

17

g

Case style

DO-203AB (DO-5)

See Outline Table