TN2540-800G-TR datasheet(3/10 Pages) ETC2

3 / 10 page

TN2540, TXN625, TYN625, TYN825, TYN1225

Characteristics

Doc ID 7478 Rev 8

3/10

Table 4.

Thermal resistances

Symbol

Parameter

Value

Unit

Rth(j-c)

Junction to case (DC)

D2PAK, TO-220AB

1.0

°C/W

TO-220AB ins

2.0

Rth(j-a)

Junction to ambient (DC)

S(1) = 1 cm2

S = Copper surface under tab.

D2PAK

°C/W

TO-220AB, TO-220AB ins

Figure 1.

Maximum average power

dissipation versus average

on-state current

Figure 2.

Average and DC on-state current

versus case temperature

P(W)

(A)

T(AV)

360°

(A)

T(AV)

100

125

D2PAK

TO-220AB

TO-220ABins

α = 180°

(°C)

case

Figure 3.

Average and DC on-state current

versus ambient temperature

Figure 4.

Relative variation of thermal

impedance versus pulse duration

(D2PAK, and TO-220AB)

(A)

T(AV)

0,0

0,5

1,0

1,5

2,0

2,5

3,0

3,5

100

125

D2PAK

TO-220AB

TO-220ABins

α = 180°

(°C)

amb

1E-3

1E-2

1E-1

1E+0

1E+1

1E+2

5E+2

0.01

0.10

1.00

K=[Z /R

th]

t (s)

Zth(j-c)

Zth(j-a)

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