Datasheet T1235H-8T (STMicroelectronics) - 4

T1235H-8T Characteristics (curves) 1.1 Characteristics (curves) Figure 1. Maximum power dissipation versus on-state Figure 2. On-state RMS current versus case temperature RMS current (full cycle) (full cycle)
P(W) IT(RMS)(A) 14 14 12 α = 180° 12 α = 180° 10 10 8 8 6 6 4 4 2 180° 2 I T T(RMS)(A) c(°C) 0 0 0 2 4 6 8 10 12 0 25 50 75 100 125 150
Figure 3. On-state RMS current versus ambient Figure 4. On-state characteristics (maximum values) temperature (free air convection)
ITM(A) IT(RMS)(A) 1000 3.5 Tj max. Vto = 0.8 V 3 R α = 180° d = 32 mΩ 2.5 100 2 Tj = 150 °C 1.5 10 1 Tj = 25 °C 0.5 Ta(°C) VTM(V) 0 1 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 0 25 50 75 100 125 150
Figure 6. Recommended maximum case-to-ambient Figure 5. Relative variation of thermal impedance versus thermal resistance versus ambient temperature for pulse duration different peak off-state voltages
K = [Zth/Rth] Rth(c-a) (°C/W) 1.0E+00 (for heatsink sizing to avoid thermal runaway) 70 Junction-to -ambiant thermal resistance: Typical 60 °C/W (without heatsink) Zth(j-c) 60 V V D = V R D = V R 1.0E-01 50 = 400 V = 600 V VD = VR Zth(j-a) = 800 V 40 30 1.0E-02 20 10 tp(s) With 15°C/W heatsink 1.0E-03 Ta (°C) 0 1.0E-03 1.0E-02 1.0E-01 1.0E+00 1.0E+01 1.0E+02 1.0E+03 20 40 60 80 100 120 140
DS13575
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Rev 2 page 4/11
Document Outline 1 Characteristics 1.1 Characteristics (curves) 2 Package information 2.1 TO-220AB package information 3 Ordering information Revision history