MPS6521 (NPN) MPS6523 (PNP) MPS6521 is a Preferred Device Amplifier Transistors Features • Voltage and Current are Negative for PNP Transistors • Pb−Free Packages are Available* http://onsemi.com COLLECTOR 3 MAXIMUM RATINGS Rating Symbol Collector −Emitter Voltage NPN PNP Unit VCEO MPS6521 MPS6523 Collector −Base Voltage Vdc 25 − − 25 VCBO MPS6521 MPS6523 Emitter −Base Voltage 4.0 Vdc Collector Current − Continuous IC 100 mAdc Total Device Dissipation @ TA = 25°C Derate above 25°C PD 625 5.0 mW mW/°C Total Device Dissipation @ TC = 25°C Derate above 25°C PD 1.5 12 W mW/°C TJ, Tstg −55 to +150 °C 2 BASE MARKING DIAGRAM TO−92 CASE 29−11 STYLE 1 1 2 THERMAL CHARACTERISTICS Characteristic Symbol Max Unit Thermal Resistance, Junction−to−Ambient (Printed Circuit Board Mounting) RqJA 200 °C/W Thermal Resistance, Junction−to−Case RqJC 83.3 °C/W Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect device reliability. 1 EMITTER 1 EMITTER − 25 VEBO Operating and Storage Junction Temperature Range 2 BASE Vdc 40 − COLLECTOR 3 MPS 652x AYWW G G 3 MPS652x = Device Code x = 1 or 3 A = Assembly Location Y = Year WW = Work Week G = Pb−Free Package (Note: Microdot may be in either location) ORDERING INFORMATION Device MPS6521 MPS6521G MPS6521RLRA MPS6521RLRAG MPS6523 MPS6523G *For additional information on our Pb−Free strategy and soldering details, please download the ON Semiconductor Soldering and Mounting Techniques Reference Manual, SOLDERRM/D. © Semiconductor Components Industries, LLC, 2006 March, 2006 − Rev. 3 1 Package Shipping † TO−92 5000 Units/Box TO−92 (Pb−Free) 5000 Units/Box TO−92 2000/Tape & Reel TO−92 (Pb−Free) 2000/Tape & Reel TO−92 5000 Units/Box TO−92 (Pb−Free) 5000 Units/Box †For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging Specifications Brochure, BRD8011/D. Preferred devices are recommended choices for future use and best overall value. Publication Order Number: MPS6521/D MPS6521 (NPN) MPS6523 (PNP) ELECTRICAL CHARACTERISTICS (TA = 25°C unless otherwise noted) Characteristic Symbol Min Max Unit Collector −Emitter Breakdown Voltage (IC = 0.5 mAdc, IB = 0) V(BR)CEO 25 − Vdc Emitter −Base Breakdown Voltage (IE = 10 mAdc, IC = 0) V(BR)EBO 4.0 − Vdc − − 0.05 0.05 OFF CHARACTERISTICS Collector Cutoff Current (VCB = 30 Vdc, IE = 0) (VCB = 20 Vdc, IE = 0) mAdc ICBO MPS6521 MPS6523 ON CHARACTERISTICS hFE − DC Current Gain (IC = 100 mAdc, VCE = 10 Vdc) MPS6521 150 − (IC = 2.0 mAdc, VCE = 10 Vdc) MPS6521 300 600 (IC = 100 mAdc, VCE = 10 Vdc) MPS6523 150 − (IC = 2.0 mAdc, VCE = 10 Vdc) MPS6523 300 600 VCE(sat) − 0.5 Vdc Cobo − 3.5 pF NF − 3.0 dB Collector −Emitter Saturation Voltage (IC = 50 mAdc, IB = 5.0 mAdc) SMALL− SIGNAL CHARACTERISTICS Output Capacitance (VCB = 10 Vdc, IE = 0, f = 1.0 MHz) Noise Figure (IC = 10 mAdc, VCE = 5.0 Vdc, RS = 10 k W, Power Bandwidth = 15.7 kHz, 3.0 dB points @ 10 Hz and 10 kHz) NPN MPS6521 EQUIVALENT SWITCHING TIME TEST CIRCUITS +3.0 V 300 ns DUTY CYCLE = 2% 275 +10.9 V 10 < t1 < 500 ms DUTY CYCLE = 2% 10 k −0.5 V <1.0 ns t1 +3.0 V +10.9 V 0 CS < 4.0 pF* −9.1 V 275 10 k < 1.0 ns 1N916 *Total shunt capacitance of test jig and connectors Figure 1. Turn−On Time Figure 2. Turn−Off Time http://onsemi.com 2 CS < 4.0 pF* MPS6521 (NPN) MPS6523 (PNP) TYPICAL NOISE CHARACTERISTICS (VCE = 5.0 Vdc, TA = 25°C) 20 100 BANDWIDTH = 1.0 Hz RS = 0 50 300 mA 10 In, NOISE CURRENT (pA) en, NOISE VOLTAGE (nV) IC = 1.0 mA 100 mA 7.0 5.0 10 mA 3.0 20 300 mA 100 mA 10 5.0 2.0 1.0 30 mA 0.5 30 mA BANDWIDTH = 1.0 Hz RS ≈ ∞ IC = 1.0 mA 10 mA 0.2 2.0 0.1 10 20 50 100 200 500 1k f, FREQUENCY (Hz) 2k 5k 10k 10 20 50 Figure 3. Noise Voltage 100 200 500 1k f, FREQUENCY (Hz) 2k 5k 10k Figure 4. Noise Current NPN MPS6521 NOISE FIGURE CONTOURS (VCE = 5.0 Vdc, TA = 25°C) BANDWIDTH = 1.0 Hz 200k 100k 50k BANDWIDTH = 1.0 Hz 200k 100k 50k 20k 10k 5k 2.0 dB 2k 1k 500 200 100 50 1M 500k RS , SOURCE RESISTANCE (OHMS) RS , SOURCE RESISTANCE (OHMS) 500k 3.0 dB 4.0 dB 6.0 dB 10 20 30 50 70 100 200 300 IC, COLLECTOR CURRENT (mA) 10 dB 500 700 20k 10k 2.0 dB 2k 1k 500 200 100 1k 1.0 dB 5k 5.0 dB 8.0 dB 10 20 Figure 5. Narrow Band, 100 Hz RS , SOURCE RESISTANCE (OHMS) 500k 30 50 70 100 200 300 IC, COLLECTOR CURRENT (mA) 500 700 1k Figure 6. Narrow Band, 1.0 kHz 10 Hz to 15.7 kHz 200k 100k 50k Noise Figure is defined as: 20k NF + 20 log10 10k 5k 1.0 dB 2k 1k 500 200 100 50 3.0 dB en = Noise Voltage of the Transistor referred to the input. (Figure 3) In = Noise Current of the Transistor referred to the input. (Figure 4) K = Boltzman’s Constant (1.38 x 10−23 j/°K) T = Temperature of the Source Resistance (°K) RS = Source Resistance (Ohms) 2.0 dB 3.0 dB 5.0 dB 8.0 dB 10 20 30 50 70 100 200 300 500 700 2 2 1ń2 S ) In RS Ǔ ǒen2 ) 4KTR 4KTRS 1k IC, COLLECTOR CURRENT (mA) Figure 7. Wideband http://onsemi.com 3 MPS6521 (NPN) MPS6523 (PNP) NPN MPS6521 TYPICAL STATIC CHARACTERISTICS h FE , DC CURRENT GAIN 400 TJ = 125°C 25°C 200 −55 °C 100 80 60 VCE = 1.0 V VCE = 10 V 40 0.004 0.006 0.01 0.02 0.03 0.05 0.07 0.1 0.2 0.3 0.5 0.7 1.0 2.0 IC, COLLECTOR CURRENT (mA) 3.0 5.0 7.0 10 20 30 50 70 100 100 1.0 TJ = 25°C IC, COLLECTOR CURRENT (mA) VCE , COLLECTOR−EMITTER VOLTAGE (VOLTS) Figure 8. DC Current Gain 0.8 IC = 1.0 mA 0.6 10 mA 50 mA 100 mA 0.4 0.2 0 0.002 0.005 0.01 0.02 0.05 0.1 0.2 0.5 1.0 2.0 IB, BASE CURRENT (mA) 5.0 10 TA = 25°C PULSE WIDTH = 300 ms 80 DUTY CYCLE ≤ 2.0% 200 mA 40 100 mA 20 0 Figure 9. Collector Saturation Region V, VOLTAGE (VOLTS) θV, TEMPERATURE COEFFICIENTS (mV/°C) TJ = 25°C 1.0 0.8 VBE(sat) @ IC/IB = 10 0.6 VBE(on) @ VCE = 1.0 V 0.4 0.2 0 VCE(sat) @ IC/IB = 10 0.1 0.2 0.5 1.0 2.0 5.0 10 20 IC, COLLECTOR CURRENT (mA) 5.0 10 15 20 25 30 35 VCE, COLLECTOR−EMITTER VOLTAGE (VOLTS) 40 Figure 10. Collector Characteristics 1.4 1.2 400 mA 300 mA 60 0 20 IB = 500 mA 50 1.6 0.8 25°C to 125°C 0 *qVC for VCE(sat) − 55°C to 25°C −0.8 25°C to 125°C −1.6 −2.4 0.1 100 *APPLIES for IC/IB ≤ hFE/2 Figure 11. “On” Voltages qVB for VBE 0.2 − 55°C to 25°C 0.5 1.0 2.0 5.0 10 20 IC, COLLECTOR CURRENT (mA) Figure 12. Temperature Coefficients http://onsemi.com 4 50 100 MPS6521 (NPN) MPS6523 (PNP) NPN MPS6521 TYPICAL DYNAMIC CHARACTERISTICS 1000 VCC = 3.0 V IC/IB = 10 TJ = 25°C 100 70 50 700 500 ts 300 200 t, TIME (ns) t, TIME (ns) 300 200 tr 30 20 td @ VBE(off) = 0.5 Vdc 10 7.0 5.0 100 70 50 tf 30 VCC = 3.0 V IC/IB = 10 IB1 = IB2 TJ = 25°C 20 3.0 1.0 2.0 20 30 3.0 5.0 7.0 10 IC, COLLECTOR CURRENT (mA) 50 70 10 1.0 100 2.0 20 30 3.0 5.0 7.0 10 IC, COLLECTOR CURRENT (mA) 500 10 TJ = 25°C f = 100 MHz TJ = 25°C f = 1.0 MHz 7.0 300 200 C, CAPACITANCE (pF) VCE = 20 V 5.0 V 100 Cib 5.0 Cob 3.0 2.0 70 50 0.5 0.7 1.0 2.0 3.0 5.0 7.0 10 20 30 1.0 0.05 50 0.1 0.2 0.5 1.0 2.0 5.0 IC, COLLECTOR CURRENT (mA) VR, REVERSE VOLTAGE (VOLTS) Figure 15. Current−Gain — Bandwidth Product Figure 16. Capacitance 20 hie , INPUT IMPEDANCE (k Ω ) 70 100 Figure 14. Turn−Off Time 10 hfe ≈ 200 @ IC = 1.0 mA 7.0 5.0 VCE = 10 Vdc f = 1.0 kHz TA = 25°C 3.0 2.0 1.0 0.7 0.5 0.3 0.2 0.1 10 20 50 200 hoe , OUTPUT ADMITTANCE (m mhos) f, T CURRENT−GAIN BANDWIDTH PRODUCT (MHz) Figure 13. Turn−On Time 50 100 70 50 VCE = 10 Vdc f = 1.0 kHz TA = 25°C hfe ≈ 200 @ IC = 1.0 mA 30 20 10 7.0 5.0 3.0 0.2 0.5 20 1.0 2.0 5.0 10 IC, COLLECTOR CURRENT (mA) 50 2.0 0.1 100 Figure 17. Input Impedance 0.2 0.5 20 1.0 2.0 5.0 10 IC, COLLECTOR CURRENT (mA) Figure 18. Output Admittance http://onsemi.com 5 50 100 MPS6521 (NPN) MPS6523 (PNP) r(t) TRANSIENT THERMAL RESISTANCE (NORMALIZED) NPN MPS6521 1.0 0.7 0.5 D = 0.5 0.3 0.2 0.2 0.1 0.1 0.07 0.05 FIGURE 20 0.05 P(pk) 0.02 0.03 0.02 t1 0.01 0.01 0.01 0.02 SINGLE PULSE 0.05 0.1 0.2 0.5 t2 1.0 2.0 5.0 10 20 50 100 200 DUTY CYCLE, D = t1/t2 D CURVES APPLY FOR POWER PULSE TRAIN SHOWN READ TIME AT t1 (SEE AN569) ZqJA(t) = r(t) w RqJA TJ(pk) − TA = P(pk) ZqJA(t) 500 1.0k 2.0k 5.0k 10k 20k 50k 100k t, TIME (ms) Figure 19. Thermal Response 104 DESIGN NOTE: USE OF THERMAL RESPONSE DATA IC, COLLECTOR CURRENT (nA) VCC = 30 Vdc A train of periodical power pulses can be represented by the model as shown in Figure 20. Using the model and the device thermal response the normalized effective transient thermal resistance of Figure 19 was calculated for various duty cycles. To find ZqJA(t), multiply the value obtained from Figure 19 by the steady state value RqJA. Example: The MPS6521 is dissipating 2.0 watts peak under the following conditions: t1 = 1.0 ms, t2 = 5.0 ms. (D = 0.2) Using Figure 19 at a pulse width of 1.0 ms and D = 0.2, the reading of r(t) is 0.22. The peak rise in junction temperature is therefore DT = r(t) x P(pk) x RqJA = 0.22 x 2.0 x 200 = 88°C. For more information, see ON Semiconductor Application Note AN569/D, available from the Literature Distribution Center or on our website at www.onsemi.com. 103 102 ICEO 101 ICBO AND 100 ICEX @ VBE(off) = 3.0 Vdc 10−1 10−2 −4 0 −2 0 0 + 20 + 40 + 60 + 80 + 100 + 120 + 140 + 160 TJ, JUNCTION TEMPERATURE (°C) Figure 21. IC, COLLECTOR CURRENT (mA) 400 1.0 ms 200 100 TC = 25°C TA = 25°C 40 TJ = 150°C 10 CURRENT LIMIT THERMAL LIMIT SECOND BREAKDOWN LIMIT 2.0 10 ms 1.0 s dc 20 6.0 The safe operating area curves indicate IC−VCE limits of the transistor that must be observed for reliable operation. Collector load lines for specific circuits must fall below the limits indicated by the applicable curve. The data of Figure 22 is based upon TJ(pk) = 150°C; TC or TA is variable depending upon conditions. Pulse curves are valid for duty cycles to 10% provided TJ(pk) ≤ 150°C. TJ(pk) may be calculated from the data in Figure 19. At high case or ambient temperatures, thermal limitations will reduce the power that can be handled to values less than the limitations imposed by second breakdown. dc 60 4.0 100 ms 4.0 6.0 8.0 10 20 40 VCE, COLLECTOR−EMITTER VOLTAGE (VOLTS) Figure 22. http://onsemi.com 6 MPS6521 (NPN) MPS6523 (PNP) PNP MPS6523 TYPICAL NOISE CHARACTERISTICS (VCE = − 5.0 Vdc, TA = 25°C) 10 7.0 IC = 10 mA 5.0 In, NOISE CURRENT (pA) en, NOISE VOLTAGE (nV) 1.0 7.0 5.0 BANDWIDTH = 1.0 Hz RS ≈ 0 30 mA 3.0 100 mA 300 mA 1.0 mA 2.0 BANDWIDTH = 1.0 Hz RS ≈ ∞ IC = 1.0 mA 3.0 2.0 300 mA 1.0 0.7 0.5 100 mA 30 mA 0.3 0.2 1.0 10 mA 0.1 10 20 50 100 200 500 1.0k f, FREQUENCY (Hz) 2.0k 5.0k 10k 10 20 50 Figure 23. Noise Voltage 100 200 500 1.0k 2.0k f, FREQUENCY (Hz) 5.0k 10k Figure 24. Noise Current NOISE FIGURE CONTOURS BANDWIDTH = 1.0 Hz 200k 100k 50k BANDWIDTH = 1.0 Hz 200k 100k 50k 20k 10k 0.5 dB 5.0k 1.0 dB 2.0k 1.0k 500 200 100 1.0M 500k RS , SOURCE RESISTANCE (OHMS) RS , SOURCE RESISTANCE (OHMS) (VCE = − 5.0 Vdc, TA = 25°C) 1.0M 500k 2.0 dB 3.0 dB 5.0 dB 10 20 30 50 70 100 200 300 IC, COLLECTOR CURRENT (mA) 500 700 1.0k 20k 10k 0.5 dB 5.0k 1.0 dB 2.0k 1.0k 500 200 100 2.0 dB 3.0 dB 5.0 dB 10 RS , SOURCE RESISTANCE (OHMS) Figure 25. Narrow Band, 100 Hz 1.0M 500k 30 50 70 100 200 300 IC, COLLECTOR CURRENT (mA) 500 700 1.0k Figure 26. Narrow Band, 1.0 kHz 10 Hz to 15.7 kHz 200k 100k 50k Noise Figure is Defined as: NF + 20 log10 20k 10k 2.0k 1.0k 500 1.0 dB 2.0 dB 3.0 dB 5.0 dB 10 20 30 50 70 100 200 300 2 2 1ń2 S ) In RS ƫ ƪen2 ) 4KTR 4KTRS en = Noise Voltage of the Transistor referred to the input. (Figure 3) In = Noise Current of the Transistor referred to the input. (Figure 4) K = Boltzman’s Constant (1.38 x 10−23 j/°K) T = Temperature of the Source Resistance (°K) RS = Source Resistance (Ohms) 0.5 dB 5.0k 200 100 20 500 700 1.0k IC, COLLECTOR CURRENT (mA) Figure 27. Wideband http://onsemi.com 7 MPS6521 (NPN) MPS6523 (PNP) PNP MPS6523 TYPICAL STATIC CHARACTERISTICS h FE , DC CURRENT GAIN 400 TJ = 125°C 25°C 200 −55 °C 100 80 60 VCE = 1.0 V VCE = 10 V 40 0.003 0.005 0.01 0.02 0.03 0.05 0.07 0.1 0.2 0.3 0.5 0.7 1.0 3.0 2.0 5.0 7.0 10 20 30 50 70 100 IC, COLLECTOR CURRENT (mA) 100 1.0 TA = 25°C IC, COLLECTOR CURRENT (mA) VCE , COLLECTOR−EMITTER VOLTAGE (VOLTS) Figure 28. DC Current Gain 0.8 IC = 1.0 mA 0.6 10 mA 50 mA 100 mA 0.4 0.2 0 0.002 0.005 0.01 0.02 0.05 0.1 0.2 0.5 1.0 2.0 IB, BASE CURRENT (mA) 5.0 10 TA = 25°C PULSE WIDTH = 300 ms 80 DUTY CYCLE ≤ 2.0% 300 mA 150 mA 40 100 mA 20 50 mA 0 V, VOLTAGE (VOLTS) θV, TEMPERATURE COEFFICIENTS (mV/°C) TJ = 25°C 1.0 0.8 VBE(sat) @ IC/IB = 10 VBE(on) @ VCE = 1.0 V 0.4 0.2 0 VCE(sat) @ IC/IB = 10 0.1 0.2 0.5 1.0 2.0 5.0 10 20 IC, COLLECTOR CURRENT (mA) 50 5.0 10 15 20 25 30 35 VCE, COLLECTOR−EMITTER VOLTAGE (VOLTS) 40 Figure 30. Collector Characteristics 1.4 0.6 250 mA 200 mA Figure 29. Collector Saturation Region 1.2 350 mA 60 0 20 IB = 400 mA 1.6 *APPLIES for IC/IB ≤ hFE/2 0.8 *qVC for VCE(sat) 0 − 55°C to 25°C 0.8 25°C to 125°C 1.6 2.4 0.1 100 25°C to 125°C Figure 31. “On” Voltages qVB for VBE 0.2 − 55°C to 25°C 0.5 1.0 2.0 5.0 10 20 IC, COLLECTOR CURRENT (mA) Figure 32. Temperature Coefficients http://onsemi.com 8 50 100 MPS6521 (NPN) MPS6523 (PNP) PNP MPS6523 TYPICAL DYNAMIC CHARACTERISTICS 500 300 200 200 100 70 50 30 tr 20 10 7.0 5.0 1.0 3.0 tf 30 td @ VBE(off) = 0.5 V 2.0 100 70 50 20 20 30 5.0 7.0 10 IC, COLLECTOR CURRENT (mA) 50 70 10 −1.0 100 − 20 − 30 − 2.0 − 3.0 − 5.0 − 7.0 −10 IC, COLLECTOR CURRENT (mA) − 50 − 70 −100 Figure 34. Turn−Off Time 500 10 TJ = 25°C TJ = 25°C 7.0 VCE = 20 V Cib C, CAPACITANCE (pF) 300 5.0 V 200 100 5.0 3.0 2.0 Cob 70 50 0.5 0.7 1.0 2.0 3.0 5.0 7.0 10 20 30 1.0 0.05 50 0.1 0.2 0.5 1.0 2.0 5.0 IC, COLLECTOR CURRENT (mA) VR, REVERSE VOLTAGE (VOLTS) Figure 35. Current−Gain — Bandwidth Product Figure 36. Capacitance 20 10 MPS6521 hfe ≈ 200 @ IC = −1.0 mA 7.0 5.0 3.0 2.0 VCE = −10 Vdc f = 1.0 kHz TA = 25°C MPS6523 hfe ≈ 100 @ IC = −1.0 mA 1.0 0.7 0.5 0.3 0.2 0.1 200 hoe , OUTPUT ADMITTANCE (m mhos) f, T CURRENT−GAIN BANDWIDTH PRODUCT (MHz) Figure 33. Turn−On Time hie , INPUT IMPEDANCE (k Ω ) VCC = − 3.0 V IC/IB = 10 IB1 = IB2 TJ = 25°C ts 300 t, TIME (ns) t, TIME (ns) 1000 700 500 VCC = 3.0 V IC/IB = 10 TJ = 25°C 100 70 50 10 20 50 VCE = 10 Vdc f = 1.0 kHz TA = 25°C 30 20 MPS6521 hfe ≈ 200 @ IC = 1.0 mA 10 7.0 5.0 MPS6523 hfe ≈ 100 @ IC = 1.0 mA 3.0 0.2 0.5 20 1.0 2.0 5.0 10 IC, COLLECTOR CURRENT (mA) 50 2.0 0.1 100 Figure 37. Input Impedance 0.2 0.5 20 1.0 2.0 5.0 10 IC, COLLECTOR CURRENT (mA) Figure 38. Output Admittance http://onsemi.com 9 50 100 MPS6521 (NPN) MPS6523 (PNP) r(t) TRANSIENT THERMAL RESISTANCE (NORMALIZED) PNP MPS6523 1.0 0.7 0.5 D = 0.5 0.3 0.2 0.2 0.1 0.1 0.07 0.05 FIGURE 40 0.05 P(pk) 0.02 0.03 0.02 t1 0.01 0.01 0.01 0.02 SINGLE PULSE 0.05 0.1 0.2 0.5 t2 1.0 2.0 5.0 10 20 50 100 200 DUTY CYCLE, D = t1/t2 D CURVES APPLY FOR POWER PULSE TRAIN SHOWN READ TIME AT t1 (SEE AN569) ZqJA(t) = r(t) w RqJA TJ(pk) − TA = P(pk) ZqJA(t) 500 1.0k 2.0k 5.0k 10k 20k 50k 100k t, TIME (ms) Figure 39. Thermal Response 104 DESIGN NOTE: USE OF THERMAL RESPONSE DATA IC, COLLECTOR CURRENT (nA) VCC = 30 Vdc 103 102 ICEO 101 ICBO AND 100 ICEX @ VBE(off) = 3.0 Vdc 10−1 10−2 −4 0 −2 0 0 + 20 + 40 + 60 + 80 + 100 + 120 + 140 + 160 TJ, JUNCTION TEMPERATURE (°C) Figure 41. IC, COLLECTOR CURRENT (mA) 400 1.0 ms 200 100 TC = 25°C TA = 25°C 40 TJ = 150°C 10 CURRENT LIMIT THERMAL LIMIT SECOND BREAKDOWN LIMIT 4.0 2.0 10 ms 1.0 s dc 20 6.0 The safe operating area curves indicate IC−VCE limits of the transistor that must be observed for reliable operation. Collector load lines for specific circuits must fall below the limits indicated by the applicable curve. The data of Figure 42 is based upon TJ(pk) = 150°C; TC or TA is variable depending upon conditions. Pulse curves are valid for duty cycles to 10% provided TJ(pk) ≤ 150°C. TJ(pk) may be calculated from the data in Figure 39. At high case or ambient temperatures, thermal limitations will reduce the power that can be handled to values less than the limitations imposed by second breakdown. 100 ms dc 60 4.0 6.0 8.0 10 20 A train of periodical power pulses can be represented by the model as shown in Figure 40. Using the model and the device thermal response the normalized effective transient thermal resistance of Figure 39 was calculated for various duty cycles. To find ZqJA(t), multiply the value obtained from Figure 39 by the steady state value RqJA. Example: The MPS6523 is dissipating 2.0 watts peak under the following conditions: t1 = 1.0 ms, t2 = 5.0 ms. (D = 0.2) Using Figure 39 at a pulse width of 1.0 ms and D = 0.2, the reading of r(t) is 0.22. The peak rise in junction temperature is therefore DT = r(t) x P(pk) x RqJA = 0.22 x 2.0 x 200 = 88°C. For more information, see ON Semiconductor Application Note AN569/D, available from the Literature Distribution Center or on our website at www.onsemi.com. 40 VCE, COLLECTOR−EMITTER VOLTAGE (VOLTS) Figure 42. http://onsemi.com 10 MPS6521 (NPN) MPS6523 (PNP) PACKAGE DIMENSIONS TO−92 (TO−226) CASE 29−11 ISSUE AL A NOTES: 1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 2. CONTROLLING DIMENSION: INCH. 3. CONTOUR OF PACKAGE BEYOND DIMENSION R IS UNCONTROLLED. 4. LEAD DIMENSION IS UNCONTROLLED IN P AND BEYOND DIMENSION K MINIMUM. B R P L SEATING PLANE DIM A B C D G H J K L N P R V K D X X G J H V C SECTION X−X 1 N INCHES MIN MAX 0.175 0.205 0.170 0.210 0.125 0.165 0.016 0.021 0.045 0.055 0.095 0.105 0.015 0.020 0.500 −−− 0.250 −−− 0.080 0.105 −−− 0.100 0.115 −−− 0.135 −−− MILLIMETERS MIN MAX 4.45 5.20 4.32 5.33 3.18 4.19 0.407 0.533 1.15 1.39 2.42 2.66 0.39 0.50 12.70 −−− 6.35 −−− 2.04 2.66 −−− 2.54 2.93 −−− 3.43 −−− STYLE 1: PIN 1. EMITTER 2. BASE 3. 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