
1
Motorola Small–Signal Transistors, FETs and Diodes Device Data
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Part of the GreenLine Portfolio of devices with energy–
conserving traits.
These miniature surface mount MOSFETs utilize Motorola’s
High Cell Density, HDTMOS process. Low r
DS(on)
assures
minimal power loss and conserves energy, making this device
ideal for use in space sensitive power management circuitry.
Typical applications are dc–dc converters and power management in p ortable a nd battery–powered p roducts s uch a s
computers, printers, PCMCIA cards, cellular and cordless
telephones.
• Low r
DS(on)
Provides Higher Efficiency and Extends Battery
Life
• Miniature SOT–23 Surface Mount Package Saves Board
Space
MAXIMUM RATINGS
(TJ = 25°C unless otherwise noted)
Rating
Symbol Value Unit
Drain–to–Source Voltage V
DSS
30 Vdc
Gate–to–Source Voltage — Continuous V
GS
± 20 Vdc
Drain Current — Continuous @ TA = 25°C
Drain Current — Pulsed Drain Current (tp ≤ 10 µs)
I
D
I
DM
750
2000
mA
Total Power Dissipation @ TA = 25°C P
D
225 mW
Operating and Storage Temperature Range TJ, T
stg
– 55 to 150 °C
Thermal Resistance — Junction–to–Ambient R
θJA
625 °C/W
Maximum Lead Temperature for Soldering Purposes, 1/8″ from case for 10 seconds T
L
260 °C
ORDERING INFORMATION
Device Reel Size Tape Width Quantity
MGSF1N03LT1 7″ 8mm embossed tape 3000
MGSF1N03LT3 13″ 8mm embossed tape 10,000
GreenLine is a trademark of Motorola, Inc.
HDTMOS is a trademark 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
Order this document
by MGSF1N03LT1/D
SEMICONDUCTOR TECHNICAL DATA
CASE 318–08, Style 21
SOT–23 (TO–236AB)
N–CHANNEL
ENHANCEMENT–MODE
TMOS MOSFET
Motorola Preferred Device
1
2
3
3 DRAIN
1
GATE
2 SOURCE

MGSF1N03LT1
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Motorola Small–Signal Transistors, FETs and Diodes Device Data
ELECTRICAL CHARACTERISTICS
(TA = 25°C unless otherwise noted)
Characteristic
Symbol Min Typ Max Unit
OFF CHARACTERISTICS
Drain–to–Source Breakdown Voltage
(VGS = 0 Vdc, ID = 10 µAdc)
V
(BR)DSS
30 — — Vdc
Zero Gate Voltage Drain Current
(VDS = 24 Vdc, VGS = 0 Vdc)
(VDS = 24 Vdc, VGS = 0 Vdc, TJ = 125°C)
I
DSS
—
—
—
—
1.0
10
µAdc
Gate–Body Leakage Current (VGS = ± 20 Vdc, VDS = 0 Vdc) I
GSS
— — ±100 nAdc
ON CHARACTERISTICS
(1)
Gate Threshold Voltage
(VDS = VGS, ID = 250 µAdc)
V
GS(th)
1.0 1.7 2.4 Vdc
Static Drain–to–Source On–Resistance
(VGS = 10 Vdc, ID = 1.2 Adc)
(VGS = 4.5 Vdc, ID = 1.0 Adc)
r
DS(on)
—
—
0.08
0.125
0.09
0.135
Ohms
DYNAMIC CHARACTERISTICS
Input Capacitance (VDS = 5.0 Vdc) C
iss
— 100 — pF
Output Capacitance (VDS = 5.0 Vdc) C
oss
— 90 —
Transfer Capacitance (VDG = 5.0 Vdc) C
rss
— 40 —
SWITCHING CHARACTERISTICS
(2)
Turn–On Delay Time
DD
= 15 Vdc, ID = 1.0 Adc,
t
r
— 1.0 —
Turn–Off Delay Time
(VDD = 15 Vdc, ID = 1.0 Adc,
RL = 50 Ω)
t
d(off)
— 16 —
Fall Time t
f
— 8.0 —
Gate Charge (See Figure 6) Q
T
— 6000 — pC
SOURCE–DRAIN DIODE CHARACTERISTICS
Continuous Current I
S
— — 0.6 A
Pulsed Current I
SM
— — 0.75
Forward Voltage
(2)
V
SD
— 0.8 — V
(1) Pulse Test: Pulse Width ≤ 300 µs, Duty Cycle ≤ 2%.
(2) Switching characteristics are independent of operating junction temperature.
TYPICAL ELECTRICAL CHARACTERISTICS
Figure 1. Transfer Characteristics Figure 2. On–Region Characteristics
0
1.5
2
0.5
1
1 1.5 2 2.5 3
I
D
, DRAIN CURRENT (AMPS)
VGS, GATE–TO–SOURCE VOLTAGE (VOLTS)
VDS = 10 V
TJ = 150°C
25°C
–55°C
3.5
2.5
0 2 4 10
0
1.5
2
VDS, DRAIN–TO–SOURCE VOLTAGE (VOLTS)
I
D
, DRAIN CURRENT (AMPS)
6
0.5
8
1
2.5
3.25 V
2.75 V
VGS = 3.75 V
2.5 V
3.0 V
3.5 V
(V
ns

MGSF1N03LT1
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Motorola Small–Signal Transistors, FETs and Diodes Device Data
Figure 3. On–Resistance versus Drain Current
Figure 4. On–Resistance versus Drain Current
Figure 5. On–Resistance Variation with Temperature
0.001
0.1
1
Figure 6. Gate Charge
VSD, DIODE FORWARD VOLTAGE (VOLTS)
Figure 7. Body Diode Forward Voltage
I
D
, DIODE CURRENT (AMPS)
0 0.1 0.2 0.3 0.9
0.01
0.4
Figure 8. Capacitance
VDS, DRAIN–TO–SOURCE VOLTAGE (Volts)
C, CAPACITANCE (pF)
0 8 16 204 12
C
iss
C
oss
C
rss
350
50
VGS = 0 V
f = 1 MHz
TJ = 25
°
C
0
0.5 0.6 0.7 0.8
R
DS(on)
, DRAIN–TO–SOURCE RESISTANCE (OHMS)
0 0.2 0.4 0.6 0.8
0.04
0.14
ID, DRAIN CURRENT (AMPS)
25°C
VGS = 4.5 V
0.09
0.1 0.3 0.5 0.7
150°C
–55°C
0.9 1
0.24
0.19
R
DS(on)
, DRAIN–TO–SOURCE RESISTANCE (OHMS)
0 0.4 0.8 1.2 1.6
0.04
0.1
0.12
ID, DRAIN CURRENT (AMPS)
VGS = 10 V
0.08
0.06
0.14
0.2 0.6 1 1.4 1.8 2
25°C
150°C
–55°C
R
DS(on)
, DRAIN–TO–SOURCE RESISTANCE
(NORMALIZED)
0
0.8
TJ, JUNCTION TEMPERATURE (
°
C)
VGS = 10 V
ID = 2 A
–55 0 50 100 150
0.2
0.4
0.6
1
1.2
1.4
1.6
VGS = 4.5 V
ID = 1 A
V
GS
, GATE–TO–SOURCE VOLTAGE (VOLTS)
0
10
6
2
0
QT, TOTAL GATE CHARGE (pC)
8
4
1000 6000
VDS = 24 V
TJ = 25
°
C
2000
ID = 2.0 A
3000
50004000
TJ = 150°C
–55°C
25°C
0.16
1.8
–25 25 75 125
100
150
200
250
300

MGSF1N03LT1
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Motorola Small–Signal Transistors, FETs and Diodes Device Data
INFORMATION FOR USING THE SOT–23 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 s ize to i nsure proper solder connection
interface between the board and the package. With the
correct pad geometry, the packages w ill self align w hen
subjected to a solder reflow process.
SOT–23
mm
inches
0.037
0.95
0.037
0.95
0.079
2.0
0.035
0.9
0.031
0.8
SOT–23 POWER DISSIPATION
The power dissipation of the SOT–23 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 T
J(max)
, the maximum rated junction temperature of the
die, R
θJA
, the thermal resistance from the device junction to
ambient, and the o perating t emperature, TA. Using t he
values provided on the data sheet for the SOT–23 package,
PD can be calculated as follows:
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 225 milliwatts.
The 556°C/W for the SOT–23 package assumes the use
of the recommended footprint on a glass epoxy printed circuit
board to achieve a power dissipation of 225 milliwatts. There
are other alternatives to achieving higher power dissipation
from the SOT–23 package. 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.
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 t ime could result in d evice failure. Therefore, the
following items should a lways be observed i n order to
minimize t he thermal s tress t o which t he devices a re
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.
• 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.
PD =
T
PD =
150°C – 25°C
556°C/W
J(max)
R
θJA
– T
A
= 225 milliwatts

MGSF1N03LT1
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Motorola Small–Signal Transistors, FETs and Diodes Device Data
PACKAGE DIMENSIONS
D
J
K
L
A
C
B
S
H
GV
3
1
2
CASE 318–08
ISSUE AE
SOT–23 (TO–236AB)
DIMAMIN MAX MIN MAX
MILLIMETERS
0.1102 0.1197 2.80 3.04
INCHES
B 0.0472 0.0551 1.20 1.40
C 0.0350 0.0440 0.89 1.11
D 0.0150 0.0200 0.37 0.50
G 0.0701 0.0807 1.78 2.04
H 0.0005 0.0040 0.013 0.100
J 0.0034 0.0070 0.085 0.177
K 0.0180 0.0236 0.45 0.60
L 0.0350 0.0401 0.89 1.02
S 0.0830 0.0984 2.10 2.50
V 0.0177 0.0236 0.45 0.60
NOTES:
1. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.
2. CONTROLLING DIMENSION: INCH.
3. MAXIMUM LEAD THICKNESS INCLUDES LEAD
FINISH THICKNESS. MINIMUM LEAD THICKNESS
IS THE MINIMUM THICKNESS OF BASE
MATERIAL.
STYLE 21:
PIN 1. GATE
2. SOURCE
3. DRAIN

MGSF1N03LT1
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Motorola Small–Signal Transistors, FETs and Diodes Device Data
Motorola reserves the right to make changes without further notice to any products herein. Motorola makes no warranty , representation or guarantee regarding
the suitability of its products for any particular purpose, nor does Motorola 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 consequential or incidental damages. “Typical” parameters which may be provided in Motorola
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. Motorola does not convey any license under its patent rights nor the rights of
others. Motorola 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 Motorola product could create a situation where personal injury
or death may occur. Should Buyer purchase or use Motorola products for any such unintended or unauthorized application, Buyer shall indemnify and hold Motorola
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
Motorola was negligent regarding the design or manufacture of the part. Motorola and are registered trademarks of Motorola, Inc. Motorola, Inc. is an Equal
Opportunity/Affirmative Action Employer.
How to reach us:
USA/EUROPE/Locations Not Listed: Motorola Literature Distribution; JAPAN: Nippon Motorola Ltd.; Tatsumi–SPD–JLDC, 6F Seibu–Butsuryu–Center,
P.O. Box 20912; Phoenix, Arizona 85036. 1–800–441–2447 or 602–303–5454 3–14–2 Tatsumi Koto–Ku, Tokyo 135, Japan. 03–81–3521–8315
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INTERNET: http://Design–NET.com 51 Ting Kok Road, Tai Po, N.T., Hong Kong. 852–26629298
This device has a class 1 ESD rating.
MGSF1N03LT1/D
*MGSF1N03LT1/D*
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