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MBR150 Datasheet(PDF) 3 Page - ON Semiconductor |
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MBR150 Datasheet(HTML) 3 Page - ON Semiconductor |
3 / 5 page MBR150, MBR160 http://onsemi.com 3 THERMAL CHARACTERISTICS Figure 4. Thermal Response 0.1 0.2 0.5 1.0 2.0 5.0 10 20 50 100 200 500 1 k 2 k 5 k 10 k 0.07 0.05 0.03 0.02 0.01 0.1 t, TIME (ms) 0.7 0.5 0.3 0.2 1.0 ZqJL(t) = ZqJL • r(t) Ppk Ppk tp t1 TIME DUTY CYCLE, D = tp/t1 PEAK POWER, Ppk, is peak of an equivalent square power pulse. DTJL = Ppk • RqJL [D + (1 − D) • r(t1 + tp) + r(tp) − r(t1)] where DTJL = the increase in junction temperature above the lead temperature r(t) = normalized value of transient thermal resistance at time, t, from Figure 4, i.e.: r(t) = r(t1 + tp) = normalized value of transient thermal resistance at time, t1 + tp. . Figure 5. Steady−State Thermal Resistance Figure 6. Typical Capacitance 3/4 0 L, LEAD LENGTH (INCHES) 90 80 60 70 50 VR, REVERSE VOLTAGE (VOLTS) 50 80 0 60 40 30 20 40 30 20 3/8 1/8 1/4 1/2 5/8 7/8 1.0 60 70 10 20 30 40 50 70 80 10 100 200 BOTH LEADS TO HEATSINK, EQUAL LENGTH MAXIMUM TYPICAL 100 90 TJ = 25°C f = 1 MHz NOTE 1. — MOUNTING DATA: Data shown for thermal resistance junction−to−ambient (RqJA) for the mounting shown is to be used as a typical guideline values for preliminary engineering or in case the tie point temperature cannot be measured. Typical Values for RqJA in Still Air Mounting Method Lead Length, L (in) RqJA 1/8 1/4 1/2 3/4 1 52 65 72 85 °C/W 2 67 80 87 100 °C/W 3 — 50 °C/W NOTE 2. — THERMAL CIRCUIT MODEL: (For heat conduction through the leads) TA(A) TA(K) TL(A) TC(A) TJ TC(K) TL(K) PD RqS(A) RqL(A) RqJ(A) RqJ(K ) RqL(K) RqS(K) |
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