MMFT5P03HD Preferred Device Power MOSFET 5 Amps, 30 Volts P–Channel SOT–223 This miniature surface mount MOSFET features ultra low RDS(on) and true logic level performance. It is capable of withstanding high energy in the avalanche and commutation modes and the drain–to–source diode has a very low reverse recovery time. MMFT5P03HD devices are designed for use in low voltage, high speed switching applications where power efficiency is important. Typical applications are dc–dc converters, and power management in portable and battery powered products such as computers, printers, cellular and cordless phones. They can also be used for low voltage motor controls in mass storage products such as disk drives and tape drives. The avalanche energy is specified to eliminate the guesswork in designs where inductive loads are switched and offer additional safety margin against unexpected voltage transients. • Ultra Low RDS(on) Provides Higher Efficiency and Extends Battery Life • Logic Level Gate Drive – Can Be Driven by Logic ICs • Miniature SOT–223 Surface Mount Package – Saves Board Space • Diode Is Characterized for Use In Bridge Circuits • Diode Exhibits High Speed, With Soft Recovery • IDSS Specified at Elevated Temperature • Avalanche Energy Specified http://onsemi.com 5 AMPERES 30 VOLTS RDS(on) = 100 mΩ P–Channel D G S MARKING DIAGRAM 4 1 TO–261AA CASE 318E STYLE 3 2 5P03H LWW 3 L WW = Location Code = Work Week PIN ASSIGNMENT 4 Drain 1 Gate 2 Drain 3 Source ORDERING INFORMATION Device Package MMFT5P03HDT3 SOT–223 Shipping 4000 Tape & Reel Preferred devices are recommended choices for future use and best overall value. Semiconductor Components Industries, LLC, 2000 November, 2000 – Rev. 3 1 Publication Order Number: MMFT5P03HD/D MMFT5P03HD MAXIMUM RATINGS (TJ = 25°C unless otherwise noted) Negative sign for P–Channel devices omitted for clarity Rating Drain–to–Source Voltage Drain–to–Gate Voltage (RGS = 1.0 MΩ) Gate–to–Source Voltage – Continuous 1″ SQ. FR–4 or G–10 PCB 10 seconds Minimum FR–4 or G–10 PCB 10 seconds Thermal Resistance – Junction to Ambient Total Power Dissipation @ TA = 25°C Linear Derating Factor Drain Current – Continuous @ TA = 25°C Continuous @ TA = 70°C Pulsed Drain Current (Note 1.) Thermal Resistance – Junction to Ambient Total Power Dissipation @ TA = 25°C Linear Derating Factor Drain Current – Continuous @ TA = 25°C Continuous @ TA = 70°C Pulsed Drain Current (Note 1.) Operating and Storage Temperature Range Single Pulse Drain–to–Source Avalanche Energy – Starting TJ = 25°C (VDD = 30 Vdc, VGS = 10 Vdc, Peak IL = 12 Apk, L = 3.5 mH, RG = 25 ) 1. Repetitive rating; pulse width limited by maximum junction temperature. http://onsemi.com 2 Symbol Max Unit VDSS VDGR 30 V 30 V VGS RTHJA PD ± 20 V 40 3.13 25 5.2 4.1 26 °C/W Watts mW/°C A A A 80 1.56 12.5 3.7 2.9 19 °C/W Watts mW/°C A A A – 55 to 150 °C ID ID IDM RTHJA PD ID ID IDM TJ, Tstg EAS mJ 250 MMFT5P03HD ELECTRICAL CHARACTERISTICS (TC = 25°C unless otherwise noted) Symbol Characteristic Min Typ Max Unit 30 – – 28 – – – – – – 1.0 25 – – 100 1.0 – 1.75 3.5 3.0 – – – 79 119 100 150 gFS 2.0 4.0 – Mhos Ciss – 475 950 pF Coss – 220 440 Crss – 70 140 td(on) – 12 24 tr – 24 48 td(off) – 47 94 tf – 46 92 td(on) – 19 38 tr – 55 110 td(off) – 30 60 tf – 40 80 QT – 17 24 Q1 – 1.7 – Q2 – 6.3 – Q3 – 4.6 – – – 1.1 0.89 1.5 – trr – 39 – ta – 20 – tb – 19 – QRR – 0.042 – OFF CHARACTERISTICS (Cpk ≥ 2.0) Drain–to–Source Breakdown Voltage (VGS = 0 Vdc, ID = 0.25 mAdc) Temperature Coefficient (Positive) (Notes 2. & 4.) V(BR)DSS Zero Gate Voltage Drain Current (VDS = 24 Vdc, VGS = 0 Vdc) (VDS = 24 Vdc, VGS = 0 Vdc, TJ = 125°C) IDSS Gate–Body Leakage Current (VGS = ± 20 Vdc, VDS = 0) IGSS Vdc mV/°C µAdc nAdc ON CHARACTERISTICS(1) Gate Threshold Voltage (Cpk ≥ 2.0) (VDS = VGS, ID = 0.25 mAdc) Threshold Temperature Coefficient (Negative) (Notes 2. & 4.) (Cpk ≥ 2.0) (Notes 2. & 4.) Static Drain–to–Source On–Resistance (VGS = 10 Vdc, ID = 5.2 Adc) (VGS = 4.5 Vdc, ID = 2.6 Adc) Forward Transconductance (VDS = 15 Vdc, ID = 2.0 Adc) (Note 2.) VGS(th) Vdc RDS(on) mV/°C mΩ DYNAMIC CHARACTERISTICS Input Capacitance Output Capacitance (VDS = 25 Vd Vdc, VGS = 0 Vdc, Vd f = 1.0 MHz) Transfer Capacitance SWITCHING CHARACTERISTICS (Note 3.) Turn–On Delay Time Rise Time Turn–Off Delay Time (VDD = 15 Vdc, ID = 4.0 Adc, VGS = 10 Vdc, Vdc RG = 6.0 Ω) (Note 2.) Fall Time Turn–On Delay Time Rise Time Turn–Off Delay Time (VDD = 15 Vdc, ID = 2.0 Adc, VGS = 4.5 4 5 Vdc, Vdc RG = 6.0 Ω) (Note 2.) Fall Time Gate Charge (VDS = 24 Vdc, ID = 4.0 Adc, VGS = 10 Vdc) (Note 2.) ns nC SOURCE–DRAIN DIODE CHARACTERISTICS Forward On–Voltage (Note 2.) (IS = 4.0 Adc, VGS = 0 Vdc) (Note 2.) (IS = 4.0 Adc, VGS = 0 Vdc, TJ = 125°C) Reverse Recovery Time (IS = 4.0 Adc, VGS = 0 Vdc, dIS/dt = 100 A/µs) (Note 2.) Reverse Recovery Stored Charge 2. Pulse Test: Pulse Width ≤ 300 µs, Duty Cycle ≤ 2%. 3. Switching characteristics are independent of operating junction temperature. 4. Reflects typical values. Max limit – Typ Cpk = 3 x SIGMA http://onsemi.com 3 VSD Vdc ns µC MMFT5P03HD TYPICAL ELECTRICAL CHARACTERISTICS VGS = 10 V 8V 6V 8 4.3 V 4.1 V TJ = 25°C 6 10 4.5 V I D , DRAIN CURRENT (AMPS) I D , DRAIN CURRENT (AMPS) 10 3.9 V 3.7 V 4 3.5 V 3.3 V 3.1 V 2 VDS ≥ 10 V 8 6 4 TJ = 100°C 2 2.7 V 0 0.4 0.8 1.2 1.6 0 2 3 3.5 4 Figure 2. Transfer Characteristics RDS(on) , DRAIN-TO-SOURCE RESISTANCE (OHMS) Figure 1. On–Region Characteristics ID = 4 A TJ = 25°C 0.2 0.1 4 2 8 6 10 0.3 4.5 TJ = 25°C 0.2 VGS = 4.5 V 0.1 0 10 V 1 0 2 3 5 4 7 6 VGS, GATE-TO-SOURCE VOLTAGE (VOLTS) ID, DRAIN CURRENT (AMPS) Figure 3. On–Resistance versus Gate–To–Source Voltage Figure 4. On–Resistance versus Drain Current and Gate Voltage 1000 2 VGS = 10 V ID = 2 A 1 0.5 8 VGS = 0 V TJ = 125°C 100 1.5 0 -50 2.5 VGS, GATE-TO-SOURCE VOLTAGE (VOLTS) 0.3 0 2 VDS, DRAIN-TO-SOURCE VOLTAGE (VOLTS) I DSS, LEAKAGE (nA) R DS(on) , DRAIN-TO-SOURCE RESISTANCE (NORMALIZED) RDS(on) , DRAIN-TO-SOURCE RESISTANCE (OHMS) 0 25°C -55°C 100°C 10 25°C 1 0.1 -25 0 25 50 75 100 125 150 00.1 0 6 12 18 24 TJ, JUNCTION TEMPERATURE (°C) VDS, DRAIN-TO-SOURCE VOLTAGE (VOLTS) Figure 5. On–Resistance Variation with Temperature Figure 6. Drain–To–Source Leakage Current versus Voltage http://onsemi.com 4 30 MMFT5P03HD POWER MOSFET SWITCHING The capacitance (Ciss) is read from the capacitance curve at a voltage corresponding to the off–state condition when calculating td(on) and is read at a voltage corresponding to the on–state when calculating td(off). At high switching speeds, parasitic circuit elements complicate the analysis. The inductance of the MOSFET source lead, inside the package and in the circuit wiring which is common to both the drain and gate current paths, produces a voltage at the source which reduces the gate drive current. The voltage is determined by Ldi/dt, but since di/dt is a function of drain current, the mathematical solution is complex. The MOSFET output capacitance also complicates the mathematics. And finally, MOSFETs have finite internal gate resistance which effectively adds to the resistance of the driving source, but the internal resistance is difficult to measure and, consequently, is not specified. The resistive switching time variation versus gate resistance (Figure 9) shows how typical switching performance is affected by the parasitic circuit elements. If the parasitics were not present, the slope of the curves would maintain a value of unity regardless of the switching speed. The circuit used to obtain the data is constructed to minimize common inductance in the drain and gate circuit loops and is believed readily achievable with board mounted components. Most power electronic loads are inductive; the data in the figure is taken with a resistive load, which approximates an optimally snubbed inductive load. Power MOSFETs may be safely operated into an inductive load; however, snubbing reduces switching losses. Switching behavior is most easily modeled and predicted by recognizing that the power MOSFET is charge controlled. The lengths of various switching intervals (∆t) are determined by how fast the FET input capacitance can be charged by current from the generator. The published capacitance data is difficult to use for calculating rise and fall because drain–gate capacitance varies greatly with applied voltage. Accordingly, gate charge data is used. In most cases, a satisfactory estimate of average input current (IG(AV)) can be made from a rudimentary analysis of the drive circuit so that t = Q/IG(AV) During the rise and fall time interval when switching a resistive load, VGS remains virtually constant at a level known as the plateau voltage, VSGP. Therefore, rise and fall times may be approximated by the following: tr = Q2 x RG/(VGG – VGSP) tf = Q2 x RG/VGSP where VGG = the gate drive voltage, which varies from zero to VGG RG = the gate drive resistance and Q2 and VGSP are read from the gate charge curve. During the turn–on and turn–off delay times, gate current is not constant. The simplest calculation uses appropriate values from the capacitance curves in a standard equation for voltage change in an RC network. The equations are: td(on) = RG Ciss In [VGG/(VGG – VGSP)] td(off) = RG Ciss In (VGG/VGSP) 1500 C, CAPACITANCE (pF) 1200 900 VGS = 0 V VDS = 0 V TJ = 25°C Ciss Crss 600 Ciss 300 Coss Crss 0 -10 10 0 VGS 20 VDS VDS, DRAIN-TO-SOURCE VOLTAGE (VOLTS) Figure 7. Capacitance Variation http://onsemi.com 5 30 MMFT5P03HD QT VGS VDS 8 Q1 8 ID = 4 A TJ = 25°C Q3 0 0 4 8 VDD = 15 V ID = 4 A VGS = 10 V TJ = 25°C 16 Q2 4 1000 12 16 0 20 t, TIME (ns) VGS, GATE-TO-SOURCE VOLTAGE (VOLTS) 24 VDS , DRAIN-TO-SOURCE VOLTAGE (VOLTS) 12 td(off) tf 100 tr 10 td(on) 1 10 QG, TOTAL GATE CHARGE (nC) RG, GATE RESISTANCE (OHMS) Figure 8. Gate–To–Source and Drain–To–Source Voltage versus Total Charge Figure 9. Resistive Switching Time Variation versus Gate Resistance 100 DRAIN–TO–SOURCE DIODE CHARACTERISTICS high di/dts. The diode’s negative di/dt during ta is directly controlled by the device clearing the stored charge. However, the positive di/dt during tb is an uncontrollable diode characteristic and is usually the culprit that induces current ringing. Therefore, when comparing diodes, the ratio of tb/ta serves as a good indicator of recovery abruptness and thus gives a comparative estimate of probable noise generated. A ratio of 1 is considered ideal and values less than 0.5 are considered snappy. Compared to ON Semiconductor standard cell density low voltage MOSFETs, high cell density MOSFET diodes are faster (shorter trr), have less stored charge and a softer reverse recovery characteristic. The softness advantage of the high cell density diode means they can be forced through reverse recovery at a higher di/dt than a standard cell MOSFET diode without increasing the current ringing or the noise generated. In addition, power dissipation incurred from switching the diode will be less due to the shorter recovery time and lower switching losses. The switching characteristics of a MOSFET body diode are very important in systems using it as a freewheeling or commutating diode. Of particular interest are the reverse recovery characteristics which play a major role in determining switching losses, radiated noise, EMI and RFI. System switching losses are largely due to the nature of the body diode itself. The body diode is a minority carrier device, therefore it has a finite reverse recovery time, trr, due to the storage of minority carrier charge, QRR, as shown in the typical reverse recovery wave form of Figure 11. It is this stored charge that, when cleared from the diode, passes through a potential and defines an energy loss. Obviously, repeatedly forcing the diode through reverse recovery further increases switching losses. Therefore, one would like a diode with short trr and low QRR specifications to minimize these losses. The abruptness of diode reverse recovery effects the amount of radiated noise, voltage spikes, and current ringing. The mechanisms at work are finite irremovable circuit parasitic inductances and capacitances acted upon by I S , SOURCE CURRENT (AMPS) 4 VGS = 0 V TJ = 25°C 3 2 1 0 0.5 0.6 0.8 0.7 0.9 1 1.1 VSD, SOURCE-TO-DRAIN VOLTAGE (VOLTS) Figure 10. Diode Forward Voltage versus Current http://onsemi.com 6 MMFT5P03HD di/dt = 300 A/µs Standard Cell Density trr I S , SOURCE CURRENT High Cell Density trr tb ta t, TIME Figure 11. Reverse Recovery Time (trr) SAFE OPERATING AREA total power averaged over a complete switching cycle must not exceed (TJ(MAX) – TC)/(RθJC). A power MOSFET designated E–FET can be safely used in switching circuits with unclamped inductive loads. For reliable operation, the stored energy from circuit inductance dissipated in the transistor while in avalanche must be less than the rated limit and must be adjusted for operating conditions differing from those specified. Although industry practice is to rate in terms of energy, avalanche energy capability is not a constant. The energy rating decreases non–linearly with an increase of peak current in avalanche and peak junction temperature. The Forward Biased Safe Operating Area curves define the maximum simultaneous drain–to–source voltage and drain current that a transistor can handle safely when it is forward biased. Curves are based upon maximum peak junction temperature and a case temperature (TC) of 25°C. Peak repetitive pulsed power limits are determined by using the thermal response data in conjunction with the procedures discussed in AN569, “Transient Thermal Resistance – General Data and Its Use.” Switching between the off–state and the on–state may traverse any load line provided neither rated peak current (IDM) nor rated voltage (VDSS) is exceeded, and that the transition time (tr, tf) does not exceed 10 µs. In addition the 10 1 0.1 0.01 0.1 250 VGS = 20 V SINGLE PULSE TC = 25°C 10 ms dc 1 ms EAS, SINGLE PULSE DRAIN-TO-SOURCE AVALANCHE ENERGY (mJ) I D , DRAIN CURRENT (AMPS) 100 100 µs RDS(on) LIMIT THERMAL LIMIT PACKAGE LIMIT 1 10 100 VDS, DRAIN-TO-SOURCE VOLTAGE (VOLTS) VDD = 30 V VGS = 10 V IL = 12 Apk L = 3.5 mH 200 150 100 50 0 25 50 75 100 125 TJ, STARTING JUNCTION TEMPERATURE (°C) Figure 12. Maximum Rated Forward Biased Safe Operating Area Figure 13. Maximum Avalanche Energy versus Starting Junction Temperature http://onsemi.com 7 150 MMFT5P03HD TYPICAL ELECTRICAL CHARACTERISTICS Rthja(t), EFFECTIVE TRANSIENT THERMAL RESISTANCE ( °C/W) 1 0.1 0.01 D = 0.5 0.2 0.1 0.05 0.02 0.01 0.001 0.0001 1.0E-05 SINGLE PULSE 1.0E-04 1.0E-03 1.0E-02 1.0E-01 t, TIME (s) 1.0E+00 1.0E+01 Figure 14. Thermal Response di/dt IS trr ta tb TIME 0.25 IS tp IS Figure 15. Diode Reverse Recovery Waveform http://onsemi.com 8 1.0E+02 1.0E+03 MMFT5P03HD INFORMATION FOR USING THE SOT–223 SURFACE MOUNT PACKAGE MINIMUM RECOMMENDED FOOTPRINT FOR SURFACE MOUNTED APPLICATIONS Surface mount board layout is a critical portion of the total design. The footprint for the semiconductor packages must be the correct size to insure proper solder connection interface between the board and the package. With the correct pad geometry, the packages will self align when subjected to a solder reflow process. 0.15 3.8 0.079 2.0 0.091 2.3 0.248 6.3 0.091 2.3 0.079 2.0 0.059 1.5 0.059 1.5 0.059 1.5 inches mm SOT–223 POWER DISSIPATION The power dissipation of the SOT–223 is a function of the drain pad size. This can vary from the minimum pad size for soldering to a pad size given for maximum power dissipation. Power dissipation for a surface mount device is determined by TJ(max), the maximum rated junction temperature of the die, RθJA, the thermal resistance from the device junction to ambient, and the operating temperature, TA. Using the values provided on the data sheet for the SOT–223 package, PD can be calculated as follows: PD = PD = 150°C – 25°C = 3.13 watts 40°C/W The 40°C/W for the SOT–223 package assumes the use of the recommended footprint on a glass epoxy printed circuit board to achieve a power dissipation of 3.13 watts. There are other alternatives to achieving higher power dissipation from the SOT–223 package. One is to increase the area of the drain pad. By increasing the area of the drain pad, the power dissipation can be increased. Although one can almost double the power dissipation with this method, one will be giving up area on the printed circuit board which can defeat the purpose of using surface mount technology. Another alternative would be to use a ceramic substrate or an aluminum core board such as Thermal Clad. Using a board material such as Thermal Clad, an aluminum core board, the power dissipation can be doubled using the same footprint. TJ(max) – TA RθJA The values for the equation are found in the maximum ratings table on the data sheet. Substituting these values into the equation for an ambient temperature TA of 25°C, one can calculate the power dissipation of the device which in this case is 3.13 watts. http://onsemi.com 9 MMFT5P03HD TYPICAL SOLDER HEATING PROFILE temperature versus time. The line on the graph shows the actual temperature that might be experienced on the surface of a test board at or near a central solder joint. The two profiles are based on a high density and a low density board. The Vitronics SMD310 convection/infrared reflow soldering system was used to generate this profile. The type of solder used was 62/36/2 Tin Lead Silver with a melting point between 177–189°C. When this type of furnace is used for solder reflow work, the circuit boards and solder joints tend to heat first. The components on the board are then heated by conduction. The circuit board, because it has a large surface area, absorbs the thermal energy more efficiently, then distributes this energy to the components. Because of this effect, the main body of a component may be up to 30 degrees cooler than the adjacent solder joints. For any given circuit board, there will be a group of control settings that will give the desired heat pattern. The operator must set temperatures for several heating zones and a figure for belt speed. Taken together, these control settings make up a heating “profile” for that particular circuit board. On machines controlled by a computer, the computer remembers these profiles from one operating session to the next. Figure 16 shows a typical heating profile for use when soldering a surface mount device to a printed circuit board. This profile will vary among soldering systems, but it is a good starting point. Factors that can affect the profile include the type of soldering system in use, density and types of components on the board, type of solder used, and the type of board or substrate material being used. This profile shows STEP 1 PREHEAT ZONE 1 “RAMP” 200°C STEP 2 STEP 3 VENT HEATING “SOAK” ZONES 2 & 5 “RAMP” DESIRED CURVE FOR HIGH MASS ASSEMBLIES STEP 4 HEATING ZONES 3 & 6 “SOAK” 160°C STEP 5 STEP 6 STEP 7 HEATING VENT COOLING ZONES 4 & 7 205° TO 219°C “SPIKE” PEAK AT 170°C SOLDER JOINT 150°C 150°C 100°C 140°C 100°C SOLDER IS LIQUID FOR 40 TO 80 SECONDS (DEPENDING ON MASS OF ASSEMBLY) DESIRED CURVE FOR LOW MASS ASSEMBLIES 5°C TIME (3 TO 7 MINUTES TOTAL) TMAX Figure 16. Typical Solder Heating Profile http://onsemi.com 10 MMFT5P03HD PACKAGE DIMENSIONS SOT–223 (TO–261) CASE 318E–04 ISSUE K A F NOTES: 1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 2. CONTROLLING DIMENSION: INCH. 4 S 1 2 3 B D L G J C 0.08 (0003) H M K http://onsemi.com 11 INCHES DIM MIN MAX A 0.249 0.263 B 0.130 0.145 C 0.060 0.068 D 0.024 0.035 F 0.115 0.126 G 0.087 0.094 H 0.0008 0.0040 J 0.009 0.014 K 0.060 0.078 L 0.033 0.041 M 0 10 S 0.264 0.287 STYLE 3: PIN 1. 2. 3. 4. GATE DRAIN SOURCE DRAIN MILLIMETERS MIN MAX 6.30 6.70 3.30 3.70 1.50 1.75 0.60 0.89 2.90 3.20 2.20 2.40 0.020 0.100 0.24 0.35 1.50 2.00 0.85 1.05 0 10 6.70 7.30 MMFT5P03HD Thermal Clad is a registered trademark of the Bergquist Company. ON Semiconductor and are trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes without further notice to any products herein. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does SCILLC assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages. “Typical” parameters which may be provided in SCILLC data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including “Typicals” must be validated for each customer application by customer’s technical experts. SCILLC does not convey any license under its patent rights nor the rights of others. SCILLC products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the SCILLC product could create a situation where personal injury or death may occur. Should Buyer purchase or use SCILLC products for any such unintended or unauthorized application, Buyer shall indemnify and hold SCILLC and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that SCILLC was negligent regarding the design or manufacture of the part. SCILLC is an Equal Opportunity/Affirmative Action Employer. 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