MOTOROLA MTD20N03HL

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SEMICONDUCTOR TECHNICAL DATA
 
# " ! !
Motorola Preferred Device
TMOS POWER FET
LOGIC LEVEL
20 AMPERES
30 VOLTS
RDS(on) = 0.035 OHM
N–Channel Enhancement–Mode Silicon Gate
This advanced HDTMOS power FET is designed to withstand
high energy in the avalanche and commutation modes. This new
energy efficient design also offers a drain–to–source diode with a
fast recovery time. Designed for low voltage, high speed switching
applications in power supplies, converters and PWM motor
controls, these devices are particularly well suited for bridge circuits
where diode speed and commutating safe operating areas are
critical and offer additional safety margin against unexpected
voltage transients.
• Avalanche Energy Specified
• Source–to–Drain Diode Recovery Time Comparable to a Discrete Fast Recovery Diode
• Diode is Characterized for Use in Bridge Circuits
• IDSS and VDS(on) Specified at Elevated Temperature
• Surface Mount Package Available in 16 mm, 13–inch/2500
Unit Tape & Reel, Add T4 Suffix to Part Number

D
G
CASE 369A–13, Style 2
DPAK
S
MAXIMUM RATINGS (TC = 25°C unless otherwise noted)
Rating
Symbol
Value
Unit
Drain–Source Voltage
VDSS
30
Vdc
Drain–Gate Voltage (RGS = 1.0 MΩ)
VDGR
30
Vdc
Gate–Source Voltage — Continuous
Gate–Source Voltage — Non–Repetitive (tp ≤ 10 ms)
VGS
VGSM
±15
± 20
Vdc
Vpk
Drain Current — Continuous
Drain Current — Continuous @ 100°C
Drain Current — Single Pulse (tp ≤ 10 µs)
ID
ID
IDM
20
16
60
Adc
Total Power Dissipation
Derate above 25°C
Total Power Dissipation @ TC = 25°C, when mounted with the minimum recommended pad size
PD
74
0.6
1.75
Watts
W/°C
TJ, Tstg
– 55 to 150
°C
Single Pulse Drain–to–Source Avalanche Energy — Starting TJ = 25°C
(VDD = 25 Vdc, VGS = 5.0 Vdc, Peak IL = 20 Apk, L = 1.0 mH, RG = 25 Ω)
EAS
200
mJ
Thermal Resistance — Junction to Case
Thermal Resistance — Junction to Ambient
Thermal Resistance — Junction to Ambient, when mounted with the minimum recommended pad size
RθJC
RθJA
RθJA
1.67
100
71.4
°C/W
TL
260
°C
Operating and Storage Temperature Range
Maximum Lead Temperature for Soldering Purposes, 1/8″ from case for 10 seconds
Apk
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, E–FET, and HDTMOS 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 1
TMOS
 Motorola
Motorola, Inc.
1995
Power MOSFET Transistor Device Data
1
MTD20N03HDL
ELECTRICAL CHARACTERISTICS (TJ = 25°C unless otherwise noted)
Characteristic
Symbol
Min
Typ
Max
30
—
—
43
—
—
—
—
—
—
10
100
—
—
100
1.0
—
1.5
5.0
2.0
—
—
0.034
0.030
0.040
0.035
—
—
0.55
—
0.8
0.7
10
13
—
Ciss
—
880
1260
Coss
—
300
420
Crss
—
80
112
td(on)
—
13
15.8
tr
—
212
238
td(off)
—
37
30
tf
—
84
96
QT
—
13.4
18.9
Q1
—
3.0
—
Q2
—
7.3
—
Q3
—
6.0
—
—
—
0.95
0.87
1.1
—
trr
—
33
—
ta
—
23
—
tb
—
10
—
QRR
—
33
—
—
4.5
—
—
7.5
—
Unit
OFF CHARACTERISTICS
(Cpk ≥ 2.0) (3)
Drain–to–Source Breakdown Voltage
(VGS = 0 Vdc, ID = 250 µAdc)
Temperature Coefficient (Positive)
V(BR)DSS
Zero Gate Voltage Drain Current
(VDS = 30 Vdc, VGS = 0 Vdc)
(VDS = 30 Vdc, VGS = 0 Vdc, TJ = 125°C)
IDSS
Gate–Body Leakage Current
(VGS = ±15 Vdc, VDS = 0 Vdc)
IGSS
Vdc
mV/°C
µAdc
nAdc
ON CHARACTERISTICS (1)
Gate Threshold Voltage
(VDS = VGS, ID = 250 µAdc)
Threshold Temperature Coefficient (Negative)
(Cpk ≥ 2.0) (3)
Static Drain–to–Source On–Resistance
(VGS = 4.0 Vdc, ID = 10 Adc)
(VGS = 5.0 Vdc, ID = 10 Adc)
(Cpk ≥ 2.0) (3)
Drain–to–Source On–Voltage (VGS = 5.0 Vdc)
(ID = 20 Adc)
(ID = 10 Adc, TJ = 125°C)
VGS(th)
Vdc
RDS(on)
Ohm
VDS(on)
Forward Transconductance
(VDS = 5.0 Vdc, ID = 10 Adc)
mV/°C
Vdc
gFS
mhos
DYNAMIC CHARACTERISTICS
Input Capacitance
(VDS = 25 Vdc, VGS = 0 Vdc,
f = 1.0 MHz)
Output Capacitance
Transfer Capacitance
pF
SWITCHING CHARACTERISTICS (2)
Turn–On Delay Time
(VDD = 15 Vdc, ID = 20 Adc,
VGS = 5.0 Vdc,
RG = 9.1 Ω)
Rise Time
Turn–Off Delay Time
Fall Time
Gate Charge
(See Figure 8)
(VDS = 24 Vdc, ID = 20 Adc,
VGS = 5.0 Vdc)
ns
nC
SOURCE–DRAIN DIODE CHARACTERISTICS
Forward On–Voltage
(Cpk ≥ 2.0) (3)
(IS = 20 Adc, VGS = 0 Vdc)
(IS = 20 Adc, VGS = 0 Vdc, TJ = 125°C)
Reverse Recovery Time
(See Figure 15)
(IS = 20 Adc, VGS = 0 Vdc,
dIS/dt = 100 A/µs)
Reverse Recovery Stored Charge
VSD
Vdc
ns
µC
INTERNAL PACKAGE INDUCTANCE
Internal Drain Inductance
(Measured from the drain lead 0.25″ from package to center of die)
LD
Internal Source Inductance
(Measured from the source lead 0.25″ from package to source bond pad)
LS
nH
nH
(1) Pulse Test: Pulse Width ≤ 300 µs, Duty Cycle ≤ 2%.
(2) Switching characteristics are independent of operating junction temperature.
(3) Reflects typical values. Cpk = Absolute Value of Spec (Spec–AVG/3.516 µA).
2
Motorola TMOS Power MOSFET Transistor Device Data
MTD20N03HDL
TYPICAL ELECTRICAL CHARACTERISTICS
40
40
VGS = 10 V
I D , DRAIN CURRENT (AMPS)
8V
30
VDS ≥ 10 V
4.5 V
5V
I D , DRAIN CURRENT (AMPS)
TJ = 25°C
4V
6V
20
3.5 V
10
3V
30
20
10
100°C
2.5 V
0
1.0
0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
TJ = – 55°C
1.4
1.8
2.2
2.6
3.0
3.4
3.8
4.2
VGS, GATE–TO–SOURCE VOLTAGE (Volts)
Figure 1. On–Region Characteristics
Figure 2. Transfer Characteristics
VGS = 5 V
0.044
TJ = 100°C
0.036
25°C
0.028
– 55°C
0.020
0
16
8
32
24
40
RDS(on) , DRAIN–TO–SOURCE RESISTANCE (OHMS)
VDS, DRAIN–TO–SOURCE VOLTAGE (Volts)
0.052
4.6
5.0
0.036
TJ = 25°C
0.032
VGS = 5 V
0.028
10 V
0.024
0.020
0
8
16
24
32
40
ID, DRAIN CURRENT (Amps)
ID, DRAIN CURRENT (Amps)
Figure 3. On–Resistance versus Drain Current
and Temperature
Figure 4. On–Resistance versus Drain Current
and Gate Voltage
1.8
1.6
1000
VGS = 5 V
ID = 10 A
VGS = 0 V
TJ = 125°C
I DSS, LEAKAGE (nA)
R DS(on) , DRAIN–TO–SOURCE RESISTANCE
(NORMALIZED)
RDS(on) , DRAIN–TO–SOURCE RESISTANCE (OHMS)
0
25°C
1.4
1.2
1.0
100
100°C
10
25°C
0.8
0.6
– 50
– 25
0
25
50
75
100
125
150
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
Motorola TMOS Power MOSFET Transistor Device Data
30
3
MTD20N03HDL
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)
2800
VDS = 0 V
VGS = 0 V
TJ = 25°C
C, CAPACITANCE (pF)
2400
2000
Ciss
1600
1200
Crss
Ciss
800
Coss
400
0
10
Crss
5
0
VGS
5
10
15
20
25
VDS
GATE–TO–SOURCE OR DRAIN–TO–SOURCE VOLTAGE (Volts)
Figure 7. Capacitance Variation
4
Motorola TMOS Power MOSFET Transistor Device Data
28
12
24
QT
10
20
8
16
VGS
6
12
Q1
Q2
4
8
ID = 20 A
TJ = 25°C 4
2
Q3
0
0
2
VDS
4
6
8
10
12
0
14
1000
VDD = 15 V
ID = 20 A
VGS = 5.0 V
TJ = 25°C
t, TIME (ns)
14
VDS , DRAIN–TO–SOURCE VOLTAGE (VOLTS)
VGS, GATE–TO–SOURCE VOLTAGE (VOLTS)
MTD20N03HDL
tr
100
tf
td(off)
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
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 12. 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
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.
I S , SOURCE CURRENT (AMPS)
20
16
VGS = 0 V
TJ = 25°C
12
8
4
0
0.50 0.55 0.60 0.65 0.70 0.75 0.80 0.85 0.90 0.95
1.0
VSD, SOURCE–TO–DRAIN VOLTAGE (Volts)
Figure 10. Diode Forward Voltage versus Current
Motorola TMOS Power MOSFET Transistor Device Data
5
MTD20N03HDL
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
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
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 reli-
able 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.
Although many E–FETs can withstand the stress of drain–
to–source avalanche at currents up to rated pulsed current
(IDM), the energy rating is specified at rated continuous current (ID), in accordance with industry custom. The energy rating must be derated for temperature as shown in the
accompanying graph (Figure 13). Maximum energy at currents below rated continuous ID can safely be assumed to
equal the values indicated.
200
VGS = 20 V
SINGLE PULSE
TC = 25°C
100 µs
10
1 ms
10 ms
RDS(on) LIMIT
THERMAL LIMIT
PACKAGE LIMIT
1
0.1
6
EAS, SINGLE PULSE DRAIN–TO–SOURCE
AVALANCHE ENERGY (mJ)
I D , DRAIN CURRENT (AMPS)
100
1.0
dc
10
100
ID = 20 A
160
120
80
40
0
25
50
75
100
125
150
VDS, DRAIN–TO–SOURCE VOLTAGE (VOLTS)
TJ, STARTING JUNCTION TEMPERATURE (°C)
Figure 12. Maximum Rated Forward Biased
Safe Operating Area
Figure 13. Maximum Avalanche Energy versus
Starting Junction Temperature
Motorola TMOS Power MOSFET Transistor Device Data
MTD20N03HDL
r(t), EFFECTIVE TRANSIENT THERMAL RESISTANCE
(NORMALIZED)
TYPICAL ELECTRICAL CHARACTERISTICS
1.0
D = 0.5
0.2
0.1
0.1
P(pk)
0.05
0.02
0.01
t1
t2
DUTY CYCLE, D = t1/t2
SINGLE PULSE
0.01
1.0E–05
1.0E–04
1.0E–03
1.0E–02
1.0E–01
RθJC(t) = r(t) RθJC
D CURVES APPLY FOR POWER
PULSE TRAIN SHOWN
READ TIME AT t1
TJ(pk) – TC = P(pk) RθJC(t)
1.0E+00
1.0E+01
t, TIME (s)
Figure 14. Thermal Response
di/dt
IS
trr
ta
tb
TIME
0.25 IS
tp
IS
Figure 15. Diode Reverse Recovery Waveform
Motorola TMOS Power MOSFET Transistor Device Data
7
MTD20N03HDL
INFORMATION FOR USING THE DPAK SURFACE MOUNT PACKAGE
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
0.165
4.191
between the board and the package. With the correct pad
geometry, the packages will self align when subjected to a
solder reflow process.
0.100
2.54
0.118
3.0
0.063
1.6
0.190
4.826
0.243
6.172
inches
mm
POWER DISSIPATION FOR A SURFACE MOUNT DEVICE
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. For a DPAK
device, PD is calculated as follows.
PD = 150°C – 25°C = 1.75 Watts
71.4°C/W
The 71.4°C/W for the DPAK package assumes the use of
the recommended footprint on a glass epoxy printed circuit
board to achieve a power dissipation of 1.75 Watts. There are
other alternatives to achieving higher power dissipation from
the surface mount packages. One is to increase the area of the
drain pad. By increasing the area of the drain pad, the power
8
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. For example, a graph of
RθJA versus drain pad area is shown in Figure 16.
100
RθJA , THERMAL RESISTANCE, JUNCTION
TO AMBIENT (°C/W)
The power dissipation for a surface mount device is a
function of the drain pad size. These 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,
PD can be calculated as follows:
Board Material = 0.0625″
G–10/FR–4, 2 oz Copper
1.75 Watts
80
TA = 25°C
60
3.0 Watts
40
5.0 Watts
20
0
2
4
6
A, AREA (SQUARE INCHES)
8
10
Figure 16. Thermal Resistance versus Drain Pad
Area for the DPAK Package (Typical)
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.
Motorola TMOS Power MOSFET Transistor Device Data
MTD20N03HDL
SOLDER STENCIL GUIDELINES
Prior to placing surface mount components onto a printed
circuit board, solder paste must be applied to the pads. Solder
stencils are used to screen the optimum amount. These
stencils are typically 0.008 inches thick and may be made of
brass or stainless steel. For packages such as the SC–59,
SC–70/SOT–323, SOD–123, SOT–23, SOT–143, SOT–223,
SO–8, SO–14, SO–16, and SMB/SMC diode packages, the
stencil opening should be the same as the pad size or a 1:1
registration. This is not the case with the DPAK and D2PAK
packages. If one uses a 1:1 opening to screen solder onto the
drain pad, misalignment and/or “tombstoning” may occur due
to an excess of solder. For these two packages, the opening
in the stencil for the paste should be approximately 50% of the
tab area. The opening for the leads is still a 1:1 registration.
Figure 17 shows a typical stencil for the DPAK and D2PAK
packages. The pattern of the opening in the stencil for the
drain pad is not critical as long as it allows approximately 50%
of the pad to be covered with paste.
ÇÇÇÇÇÇ
ÇÇÇÇÇÇÇÇ
ÇÇÇÇÇÇÇÇ
ÇÇÇÇÇÇÇÇ
ÇÇÇÇÇÇÇÇ
ÇÇÇÇÇÇÇÇ
ÇÇÇÇÇÇÇÇ
ÇÇ
ÇÇ
ÇÇ
ÇÇ
SOLDER PASTE
OPENINGS
STENCIL
Figure 17. Typical Stencil for DPAK and
D2PAK Packages
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.
• The soldering temperature and time shall not exceed
260°C for more than 10 seconds.
Motorola TMOS Power MOSFET Transistor Device Data
• 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.
* Due to shadowing and the inability to set the wave height to
incorporate other surface mount components, the D2PAK is
not recommended for wave soldering.
9
MTD20N03HDL
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
18 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
TMAX
TIME (3 TO 7 MINUTES TOTAL)
Figure 18. Typical Solder Heating Profile
10
Motorola TMOS Power MOSFET Transistor Device Data
MTD20N03HDL
PACKAGE DIMENSIONS
–T–
C
B
V
NOTES:
1. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.
2. CONTROLLING DIMENSION: INCH.
SEATING
PLANE
E
R
Z
A
S
U
K
F
J
L
H
D
G
STYLE 2:
PIN 1.
2.
3.
4.
2 PL
0.13 (0.005)
M
T
GATE
DRAIN
SOURCE
DRAIN
DIM
A
B
C
D
E
F
G
H
J
K
L
R
S
U
V
Z
INCHES
MIN
MAX
0.235
0.250
0.250
0.265
0.086
0.094
0.027
0.035
0.033
0.040
0.037
0.047
0.180 BSC
0.034
0.040
0.018
0.023
0.102
0.114
0.090 BSC
0.175
0.215
0.020
0.050
0.020
–––
0.030
0.050
0.138
–––
MILLIMETERS
MIN
MAX
5.97
6.35
6.35
6.73
2.19
2.38
0.69
0.88
0.84
1.01
0.94
1.19
4.58 BSC
0.87
1.01
0.46
0.58
2.60
2.89
2.29 BSC
4.45
5.46
0.51
1.27
0.51
–––
0.77
1.27
3.51
–––
CASE 369A–13
ISSUE W
Motorola TMOS Power MOSFET Transistor Device Data
11
MTD20N03HDL
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12
◊
*MTD20N03HDL/D*
Motorola TMOS Power MOSFET Transistor
Device Data
MTD20N03HDL/D