Order this document by MMDF4N01HD/D SEMICONDUCTOR TECHNICAL DATA Medium Power Surface Mount Products Motorola Preferred Device MiniMOS devices are an advanced series of power MOSFETs which utilize Motorola’s High Cell Density HDTMOS process. These miniature surface mount MOSFETs feature ultra low RDS(on) and true logic level performance. They are capable of withstanding high energy in the avalanche and commutation modes and the drain–to–source diode has a very low reverse recovery time. MiniMOS 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. • • • • • • • DUAL TMOS POWER MOSFET 4.0 AMPERES 20 VOLTS RDS(on) = 0.045 OHM D CASE 751–05, Style 11 SO–8 G Ultra Low RDS(on) Provides Higher Efficiency and Extends Battery Life Logic Level Gate Drive — Can Be Driven by Logic ICs Miniature SO–8 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 Mounting Information for SO–8 Package Provided S Source–1 1 8 Drain–1 Gate–1 2 7 Drain–1 Source–2 3 6 Drain–2 Gate–2 4 5 Drain–2 Top View MAXIMUM RATINGS (TJ = 25°C unless otherwise noted) Rating Symbol Value Unit Drain–to–Source Voltage VDSS 20 Vdc Drain–to–Gate Voltage (RGS = 1.0 MΩ) VDGR 20 Vdc Gate–to–Source Voltage — Continuous VGS ± 12 Vdc Drain Current — Continuous @ TA = 25°C Drain Current — Continuous @ TA = 100°C Drain Current — Single Pulse (tp ≤ 10 µs) ID ID IDM 5.2 4.1 48 Adc Total Power Dissipation @ TA = 25°C (1) PD 2.0 Watts TJ, Tstg – 55 to 150 °C RθJA 62.5 °C/W TL 260 °C Operating and Storage Temperature Range Thermal Resistance — Junction to Ambient (1) Maximum Lead Temperature for Soldering Purposes, 1/8″ from case for 10 seconds Apk DEVICE MARKING D4N01 (1) Mounted on 2” square FR4 board (1” sq. 2 oz. Cu 0.06” thick single sided) with one die operating, 10 sec. max. ORDERING INFORMATION Device MMSF4N01HDR2 Reel Size Tape Width Quantity 13″ 12 mm embossed tape 2500 units Designer’s Data for “Worst Case” Conditions — The Designer’s Data Sheet permits the design of most circuits entirely from the information presented. SOA Limit curves — representing boundaries on device characteristics — are given to facilitate “worst case” design. Designer’s, HDTMOS and MiniMOS are trademarks of Motorola, Inc. TMOS is a registered trademark of Motorola, Inc. Thermal Clad is a trademark of the Bergquist Company. Preferred devices are Motorola recommended choices for future use and best overall value. REV 5 TMOS Motorola Motorola, Inc. 1996 Power MOSFET Transistor Device Data 1 MMDF4N01HD ELECTRICAL CHARACTERISTICS (TC = 25°C unless otherwise noted) Characteristic Symbol Min Typ Max Unit 20 — — 2.0 — — — — — — 1.0 10 — — 100 0.6 — 0.8 2.8 1.1 — — — 0.035 0.043 0.045 0.055 gFS 3.0 6.0 — mhos Ciss — 425 595 pF Coss — 270 378 Crss — 115 230 td(on) — 13 26 tr — 60 120 td(off) — 20 40 tf — 29 58 td(on) — 10 20 tr — 42 84 td(off) — 24 48 tf — 28 56 QT — 9.2 13 Q1 — 1.3 — Q2 — 3.5 — Q3 — 3.0 — — — 0.95 0.78 1.1 — trr — 38 — ta — 17 — tb — 22 — QRR — 0.028 — OFF CHARACTERISTICS Drain–Source Breakdown Voltage (VGS = 0 Vdc, ID = 0.25 mAdc) Temperature Coefficient (Positive) V(BR)DSS Zero Gate Voltage Drain Current (VDS = 12 Vdc, VGS = 0 Vdc) (VDS = 12 Vdc, VGS = 0 Vdc, TJ = 125°C) IDSS Gate–Body Leakage Current (VGS = ± 8.0 Vdc, VDS = 0) IGSS Vdc mV/°C µAdc nAdc ON CHARACTERISTICS (1) Gate Threshold Voltage (VDS = VGS, ID = 0.25 mAdc) Temperature Coefficient (Negative) VGS(th) Static Drain–to–Source On–Resistance (VGS = 4.5 Vdc, ID = 4.0 Adc) (VGS = 2.7 Vdc, ID = 2.0 Adc) RDS(on) Forward Transconductance (VDS = 2.5 Vdc, ID = 2.0 Adc) Vdc mV/°C Ohm DYNAMIC CHARACTERISTICS Input Capacitance Output Capacitance (VDS = 10 Vdc, VGS = 0 Vdc, f = 1.0 MHz) Reverse Transfer Capacitance SWITCHING CHARACTERISTICS (2) Turn–On Delay Time Rise Time Turn–Off Delay Time (VDD = 6.0 Vdc, ID = 4.0 Adc, VGS = 2.7 Vdc, RG = 2.3 Ω) Fall Time Turn–On Delay Time Rise Time Turn–Off Delay Time (VDD = 6.0 Vdc, ID = 4.0 Adc, VGS = 4.5 Vdc, RG = 2.3 Ω) Fall Time Gate Charge (See Figure 8) (VDS = 10 Vdc, ID = 4.0 Adc, VGS = 4.5 Vdc) SOURCE–DRAIN DIODE CHARACTERISTICS Forward On–Voltage(1) (IS = 4.0 Adc, VGS = 0 Vdc) (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) Reverse Recovery Stored Charge VSD ns nC Vdc ns µC (1) Pulse Test: Pulse Width ≤ 300 µs, Duty Cycle ≤ 2%. (2) Switching characteristics are independent of operating junction temperature. 2 Motorola TMOS Power MOSFET Transistor Device Data MMDF4N01HD TYPICAL ELECTRICAL CHARACTERISTICS 8 VDS ≥ 10 V TJ = 25°C 2.3 V 2.5 V I D , DRAIN CURRENT (AMPS) I D , DRAIN CURRENT (AMPS) 8 VGS = 8 V 4.5 V 3.1 V 6 2.7 V 2.1 V 4 1.9 V 1.7 V 2 6 100°C 4 25°C TJ = – 55°C 2 1.5 V 1.3 V 0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 1 1.6 1.4 1.8 2 VGS, GATE–TO–SOURCE VOLTAGE (VOLTS) Figure 1. On–Region Characteristics Figure 2. Transfer Characteristics TJ = 25°C ID = 2 A 0.06 0.05 0.04 6 2 4 VGS, GATE–TO–SOURCE VOLTAGE (VOLTS) 0 8 2.2 0.050 TJ = 25°C VGS = 2.7 V 0.045 0.040 4.5 V 0.035 0.030 0 Figure 3. On–Resistance versus Gate–To–Source Voltage RDS(on) , DRAIN–TO–SOURCE RESISTANCE (NORMALIZED) 1.2 VDS, DRAIN–TO–SOURCE VOLTAGE (VOLTS) 0.07 0.03 0 2 RDS(on) , DRAIN–TO–SOURCE RESISTANCE (OHMS) RDS(on) , DRAIN–TO–SOURCE RESISTANCE (OHMS) 0 2 4 6 ID, DRAIN CURRENT (AMPS) 8 Figure 4. On–Resistance versus Drain Current and Gate Voltage 2 100 VGS = 0 V VGS = 4.5 V ID = 4 A TJ = 125°C I DSS , LEAKAGE (nA) 1.5 1 0.5 0 – 50 – 25 0 25 50 75 100 125 150 10 100°C TJ, JUNCTION TEMPERATURE (°C) 8 10 2 4 6 VDS, DRAIN–TO–SOURCE VOLTAGE (VOLTS) Figure 5. On–Resistance Variation with Temperature Figure 6. Drain–To–Source Leakage Current versus Voltage Motorola TMOS Power MOSFET Transistor Device Data 0 12 3 MMDF4N01HD POWER MOSFET SWITCHING 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 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). 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 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. 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) 2000 VDS = 0 V C, CAPACITANCE (pF) 1600 VGS = 0 V TJ = 25°C Ciss 1200 Crss 800 Ciss Coss 400 Crss 0 8 0 4 VGS 4 8 12 VDS GATE–TO–SOURCE OR DRAIN–TO–SOURCE VOLTAGE (VOLTS) Figure 7. Capacitance Variation 4 Motorola TMOS Power MOSFET Transistor Device Data 10 QT 4 8 VGS VDS 6 3 Q1 Q2 ID = 4 A TJ = 25°C 2 4 2 1 Q3 0 0 2 4 6 0 10 8 100 VDD = 6 V ID = 4 A VGS = 4.5 V TJ = 25°C t, TIME (ns) 5 VDS , DRAIN–TO–SOURCE VOLTAGE (VOLTS) VGS, GATE–TO–SOURCE VOLTAGE (VOLTS) MMDF4N01HD tr tf td(off) td(on) 10 1 0.1 10 1 QT, TOTAL 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 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 Motorola 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 14. 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 t rr 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 high I S , SOURCE CURRENT (AMPS) 4 VV GS GS= =0 0VV TJTJ= =25°C 25°C 3 2 1 0 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 VSD, SOURCE–TO–DRAIN VOLTAGE (VOLTS) Figure 10. Diode Forward Voltage versus Current Motorola TMOS Power MOSFET Transistor Device Data 5 MMDF4N01HD di/dt = 300 A/µs I S , SOURCE CURRENT Standard Cell Density trr High Cell Density trr tb ta t, TIME Figure 11. Reverse Recovery Time (trr) SAFE OPERATING AREA 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 total power I D , DRAIN CURRENT (AMPS) 100 10 VGS = 20 V SINGLE PULSE TC = 25°C 10 µs 100 µs 1 ms 10 ms 1 0.1 0.01 0.1 dc RDS(on) LIMIT THERMAL LIMIT PACKAGE LIMIT Mounted on 2” sq. FR4 board (1” sq. 2 oz. Cu 0.06” thick single sided) with one die operating, 10s max. 1 10 100 VDS, DRAIN–TO–SOURCE VOLTAGE (VOLTS) Figure 12. Maximum Rated Forward Biased Safe Operating Area 6 Motorola TMOS Power MOSFET Transistor Device Data MMDF4N01HD TYPICAL ELECTRICAL CHARACTERISTICS Rthja(t), EFFECTIVE TRANSIENT THERMAL RESISTANCE 10 1 0.1 D = 0.5 0.2 0.1 0.05 0.02 Normalized to θja at 10s. Chip 0.0175 Ω 0.0710 Ω 0.2706 Ω 0.0154 F 0.0854 F 0.3074 F 0.5776 Ω 0.7086 Ω 0.01 0.01 SINGLE PULSE 0.001 1.0E–05 1.0E–04 1.0E–03 1.0E–02 1.0E–01 t, TIME (s) 1.0E+00 1.7891 F 1.0E+01 107.55 F 1.0E+02 Ambient 1.0E+03 Figure 13. Thermal Response di/dt IS trr ta tb TIME 0.25 IS tp IS Figure 14. Diode Reverse Recovery Waveform Motorola TMOS Power MOSFET Transistor Device Data 7 MMDF4N01HD INFORMATION FOR USING THE SO–8 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 ensure 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. 0.060 1.52 0.275 7.0 0.155 4.0 0.024 0.6 0.050 1.270 inches mm SO–8 POWER DISSIPATION The power dissipation of the SO–8 is a function of the input pad size. This can vary from the minimum pad size for soldering to the 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 SO–8 package, PD can be calculated as follows: PD = 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 2.0 Watts. PD = 150°C – 25°C = 2.0 Watts 62.5°C/W The 62.5°C/W for the SO–8 package assumes the recommended footprint on a glass epoxy printed circuit board to achieve a power dissipation of 2.0 Watts using the footprint shown. Another alternative would be to use a ceramic substrate or an aluminum core board such as Thermal Clad. Using board material such as Thermal Clad, the power dissipation can be doubled using the same footprint. SOLDERING PRECAUTIONS The melting temperature of solder is higher than the rated temperature of the device. When the entire device is heated to a high temperature, failure to complete soldering within a short time could result in device failure. Therefore, the following items should always be observed in order to minimize the thermal stress to which the devices are subjected. • Always preheat the device. • The delta temperature between the preheat and soldering should be 100°C or less.* • When preheating and soldering, the temperature of the leads and the case must not exceed the maximum temperature ratings as shown on the data sheet. When using infrared heating with the reflow soldering method, the difference shall be a maximum of 10°C. 8 • The soldering temperature and time shall not exceed 260°C for more than 10 seconds. • When shifting from preheating to soldering, the maximum temperature gradient shall be 5°C or less. • After soldering has been completed, the device should be allowed to cool naturally for at least three minutes. Gradual cooling should be used as the use of forced cooling will increase the temperature gradient and result in latent failure due to mechanical stress. • Mechanical stress or shock should not be applied during cooling. * Soldering a device without preheating can cause excessive thermal shock and stress which can result in damage to the device. Motorola TMOS Power MOSFET Transistor Device Data MMDF4N01HD TYPICAL SOLDER HEATING PROFILE 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 15 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 temperature versus time. The 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 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. STEP 5 STEP 4 HEATING HEATING ZONES 3 & 6 ZONES 4 & 7 “SPIKE” “SOAK” 170°C STEP 6 VENT STEP 7 COOLING 205° TO 219°C PEAK AT SOLDER JOINT 160°C 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 50°C TIME (3 TO 7 MINUTES TOTAL) TMAX Figure 15. Typical Solder Heating Profile Motorola TMOS Power MOSFET Transistor Device Data 9 MMDF4N01HD PACKAGE DIMENSIONS –A– M 1 4 R 0.25 (0.010) 4X –B– X 45 _ B M 5 P 8 NOTES: 1. DIMENSIONS A AND B ARE DATUMS AND T IS A DATUM SURFACE. 2. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 3. DIMENSIONS ARE IN MILLIMETER. 4. DIMENSION A AND B DO NOT INCLUDE MOLD PROTRUSION. 5. MAXIMUM MOLD PROTRUSION 0.15 PER SIDE. 6. DIMENSION D DOES NOT INCLUDE MOLD PROTRUSION. ALLOWABLE DAMBAR PROTRUSION SHALL BE 0.127 TOTAL IN EXCESS OF THE D DIMENSION AT MAXIMUM MATERIAL CONDITION. J M_ C F G –T– K SEATING PLANE 8X D 0.25 (0.010) M T B S A S CASE 751–05 SO–8 ISSUE P DIM A B C D F G J K M P R MILLIMETERS MIN MAX 4.80 5.00 3.80 4.00 1.35 1.75 0.35 0.49 0.40 1.25 1.27 BSC 0.18 0.25 0.10 0.25 0_ 7_ 5.80 6.20 0.25 0.50 STYLE 11: PIN 1. 2. 3. 4. 5. 6. 7. 8. SOURCE 1 GATE 1 SOURCE 2 GATE 2 DRAIN 2 DRAIN 2 DRAIN 1 DRAIN 1 Motorola reserves the right to make changes without further notice to any products herein. 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