Semiconductor Components Industries, LLC, 2001
November, 2001 – Rev. 2 1Publication Order Number:
MMUN2111LT1/D
MMUN2111LT1 Series
Preferred Devices
Bias Resistor Transistors
PNP Silicon Surface Mount Transistors
with Monolithic Bias Resistor Network
This new series of digital transistors is designed to replace a single
device and its external resistor bias network. The BRT (Bias Resistor
Transistor) contains a single transistor with a monolithic bias network
consisting of two resistors; a series base resistor and a base-emitter
resistor. The BRT eliminates these individual components by
integrating them into a single device. The use of a BRT can reduce
both system cost and board space. The device is housed in the SOT-23
package which is designed for low power surface mount applications.
Simplifies Circuit Design
Reduces Board Space
Reduces Component Count
The SOT-23 package can be soldered using wave or reflow. The
modified gull-winged leads absorb thermal stress during soldering
eliminating the possibility of damage to the die.
Available in 8 mm embossed tape and reel. Use the Device Number
to order the 7 inch/3000 unit reel. Replace “T1” with “T3” in the
Device Number to order the 13 inch/10,000 unit reel.
MAXIMUM RATINGS (TA = 25°C unless otherwise noted)
Rating Symbol Value Unit
Collector-Base Voltage VCBO 50 Vdc
Collector-Emitter Voltage VCEO 50 Vdc
Collector Current IC100 mAdc
THERMAL CHARACTERISTICS
Characteristic Symbol Max Unit
Total Device Dissipation
TA = 25°C
Derate above 25°C
PD246 (Note 1.)
400 (Note 2.)
1.5 (Note 1.)
2.0 (Note 2.)
mW
°C/W
Thermal Resistance –
Junction-to-Ambient RθJA 508 (Note 1.)
311 (Note 2.) °C/W
Thermal Resistance –
Junction-to-Lead RθJL 174 (Note 1.)
208 (Note 2.) °C/W
Junction and Storage
Temperature Range TJ, Tstg –55 to +150 °C
1. FR–4 @ Minimum Pad
2. FR–4 @ 1.0 x 1.0 inch Pad
SOT–23
CASE 318
STYLE 6
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A6x = Device Marking
x = A – L (See
Page 2)
M = Date Code
A6x M
MARKING DIAGRAM
1
3
2
Preferred devices are recommended choices for future use
and best overall value.
PIN 3
COLLECTOR
(OUTPUT)
PIN 2
EMITTER
(GROUND)
PIN 1
BASE
(INPUT)
R1
R2
DEVICE MARKING INFORMATION
See specific marking information in the device marking table
on page 2 of this data sheet.
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DEVICE MARKING AND RESISTOR VALUES
Device Package Marking R1 (K) R2 (K) Shipping
MMUN2111LT1
MMUN2111LT3 SOT–23 A6A 10 10 3000/Tape & Reel
10,000/Tape & Reel
MMUN2112LT1
MMUN2112LT3 SOT–23 A6B 22 22 3000/Tape & Reel
10,000/Tape & Reel
MMUN2113LT1
MMUN2113LT3 SOT–23 A6C 47 47 3000/Tape & Reel
10,000/Tape & Reel
MMUN2114LT1
MMUN2114LT3 SOT–23 A6D 10 47 3000/Tape & Reel
10,000/Tape & Reel
MMUN2115LT1 (Note 3.)
MMUN2115LT3 SOT–23 A6E 10 3000/Tape & Reel
10,000/Tape & Reel
MMUN2116LT1 (Note 3.)
MMUN2116LT3 SOT–23 A6F 4.7 3000/Tape & Reel
10,000/Tape & Reel
MMUN2130LT1 (Note 3.)
MMUN2130LT3 SOT–23 A6G 1.0 1.0 3000/Tape & Reel
10,000/Tape & Reel
MMUN2131LT1 (Note 3.)
MMUN2131LT3 SOT–23 A6H 2.2 2.2 3000/Tape & Reel
10,000/Tape & Reel
MMUN2132LT1 (Note 3.)
MMUN2132LT3 SOT–23 A6J 4.7 4.7 3000/Tape & Reel
10,000/Tape & Reel
MMUN2133LT1 (Note 3.)
MMUN2133LT3 SOT–23 A6K 4.7 47 3000/Tape & Reel
10,000/Tape & Reel
MMUN2134LT1 (Note 3.)
MMUN2134LT3 SOT–23 A6L 22 47 3000/Tape & Reel
10,000/Tape & Reel
ELECTRICAL CHARACTERISTICS (TA = 25°C unless otherwise noted)
Characteristic Symbol Min Typ Max Unit
OFF CHARACTERISTICS
Collector-Base Cutoff Current (VCB = 50 V, IE = 0) ICBO 100 nAdc
Collector-Emitter Cutoff Current (VCE = 50 V, IB = 0) ICEO 500 nAdc
Emitter-Base Cutoff Current MMUN2111LT1
(VEB = 6.0 V, IC = 0) MMUN2112LT1
MMUN2113LT1
MMUN2114LT1
MMUN2115LT1
MMUN2116LT1
MMUN2130LT1
MMUN2131LT1
MMUN2132LT1
MMUN2133LT1
MMUN2134LT1
IEBO
0.5
0.2
0.1
0.2
0.9
1.9
4.3
2.3
1.5
0.18
0.13
mAdc
Collector-Base Breakdown Voltage (IC = 10 µA, IE = 0) V(BR)CBO 50 Vdc
Collector-Emitter Breakdown Voltage (Note 4.)
(IC = 2.0 mA, IB = 0) V(BR)CEO 50 Vdc
3. New devices. Updated curves to follow in subsequent data sheets.
4. Pulse Test: Pulse Width < 300 µs, Duty Cycle < 2.0%
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ELECTRICAL CHARACTERISTICS (TA = 25°C unless otherwise noted) (Continued)
Characteristic Symbol Min Typ Max Unit
ON CHARACTERISTICS (Note 5.)
DC Current Gain MMUN2111LT1
(VCE = 10 V, IC = 5.0 mA) MMUN2112LT1
MMUN2113LT1
MMUN2114LT1
MMUN2115LT1
MMUN2116LT1
MMUN2130LT1
MMUN2131LT1
MMUN2132LT1
MMUN2133LT1
MMUN2134LT1
hFE 35
60
80
80
160
160
3.0
8.0
15
80
80
60
100
140
140
250
250
5.0
15
27
140
130
Collector-Emitter Saturation Voltage
(IC = 10 mA, IE = 0.3 mA)
(IC = 10 mA, IB = 5 mA) MMUN2130LT1/MMUN2131LT1
(IC = 10 mA, IB = 1 mA) MMUN2115LT1/MMUN2116LT1/
MMUN2132LT1/MMUN2133LT1/MMUN2134LT1
VCE(sat) 0.25 Vdc
Output Voltage (on)
(VCC = 5.0 V, VB = 2.5 V, RL = 1.0 k) MMUN2111LT1
MMUN2112LT1
MMUN2114LT1
MMUN2115LT1
MMUN2116LT1
MMUN2130LT1
MMUN2131LT1
MMUN2132LT1
MMUN2133LT1
MMUN2134LT1
(VCC = 5.0 V, VB = 3.5 V, RL = 1.0 k) MMUN2113LT1
VOL
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
Vdc
Output Voltage (off)
(VCC = 5.0 V, VB = 0.5 V, RL = 1.0 k)
(VCC = 5.0 V, VB = 0.25 V, RL = 1.0 k) MMUN2115LT1
MMUN2116LT1
MMUN2131LT1
MMUN2132LT1
(VCC = 5.0 V, VB = 0.050 V, RL = 1.0 k) MMUN2130LT1
VOH 4.9 Vdc
Input Resistor MMUN2111LT1
MMUN2112LT1
MMUN2113LT1
MMUN2114LT1
MMUN2115LT1
MMUN2116LT1
MMUN2130LT1
MMUN2131LT1
MMUN2132LT1
MMUN2133LT1
MMUN2134LT1
R1 7.0
15.4
32.9
7.0
7.0
3.3
0.7
1.5
3.3
3.3
15.4
10
22
47
10
10
4.7
1.0
2.2
4.7
4.7
22
13
28.6
61.1
13
13
6.1
1.3
2.9
6.1
6.1
28.6
k
Resistor Ratio MMUN2111LT1/MMUN2112LT1/MMUN2113LT1
MMUN2114LT1
MMUN2115LT1/MMUN2116LT1
MMUN2130LT1/MMUN2131LT1/MMUN2132LT1
MMUN2133LT1
R1/R20.8
0.17
0.8
0.055
1.0
0.21
1.0
0.1
1.2
0.25
1.2
0.185
5. Pulse Test: Pulse Width < 300 µs, Duty Cycle < 2.0%
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TYPICAL ELECTRICAL CHARACTERISTICS
MMUN2111LT1
100
10
1
0.1
0.01
0.001 0
Vin, INPUT VOLTAGE (VOLTS)
IC, COLLECTOR CURRENT (mA)
TA=-25°C
25°C
123456 7 8 9 10
0.01
20
IC, COLLECTOR CURRENT (mA)
VCE(sat) , MAXIMUM COLLECTOR VOLTAGE (VOLTS)
0.1
1
0 40 60 80
1000
1 10 100
IC, COLLECTOR CURRENT (mA)
hFE, DC CURRENT GAIN (NORMALIZED)
TA=75°C
-25°C
100
10
75°C
50
010 20 30 40
4
3
1
2
VR, REVERSE BIAS VOLTAGE (VOLTS)
Cob , CAPACITANCE (pF)
0
TA=-25°C
25°C
75°C
f = 1 MHz
lE = 0 V
TA = 25°C
VO = 5 V
IC/IB=10
VCE = 10 V
0
IC, COLLECTOR CURRENT (mA)
0.1
Vin, INPUT VOLTAGE (VOLTS)
1
10
100
10 20 30 40 50
TA=-25°C
25°C
75°C
VO = 0.2 V
Figure 1. Derating Curve
250
200
150
100
50
0
-50 0 50 100 150
TA, AMBIENT TEMPERATURE (°C)
PD, POWER DISSIPATION (MILLIWATTS)
RθJA = 625°C/W
Figure 2. VCE(sat) versus IC
Figure 3. DC Current Gain Figure 4. Output Capacitance
Figure 5. Output Current versus Input Voltage Figure 6. Input Voltage versus Output Current
25°C
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TYPICAL ELECTRICAL CHARACTERISTICS
MMUN2112LT1
Figure 7. VCE(sat) versus ICFigure 8. DC Current Gain
1000
10
IC, COLLECTOR CURRENT (mA)
hFE, DC CURRENT GAIN (NORMALIZED)
100
10
1100
TA=75°C
25°C
-25°C
Figure 9. Output Capacitance
IC, COLLECTOR CURRENT (mA)
010 20 30
TA=-25°C
75°C
Vin, INPUT VOLTAGE (VOLTS)
100
10
1
0.1 40 50
Figure 10. Output Current versus Input Voltage
100
10
1
0.1
0.01
0.001 0 1 2 3 4
Vin, INPUT VOLTAGE (VOLTS)
75°C25°C
TA=-25°C
IC, COLLECTOR CURRENT (mA)
5 6 7 8 9 10
Figure 11. Input Voltage versus Output Current
0.01
VCE(sat), MAXIMUM COLLECTOR VOLTAGE (VOLTS)
0.1
1
10
40
IC, COLLECTOR CURRENT (mA)
0 20 60 80
75°C
25°C
TA=-25°C
50
010 2030 40
4
3
2
1
0
VR, REVERSE BIAS VOLTAGE (VOLTS)
Cob , CAPACITANCE (pF)
25°C
f = 1 MHz
lE = 0 V
TA = 25°C
VO = 5 V
VO = 0.2 V
IC/IB=10 VCE = 10 V
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TYPICAL ELECTRICAL CHARACTERISTICS
MMUN2113LT1
Figure 12. VCE(sat) versus IC
100
10
1
0.1 0 10 20 30 40
IC, COLLECTOR CURRENT (mA)
Vin , INPUT VOLTAGE (VOLTS)
TA=-25°C
25°C
75°C
50
Figure 13. DC Current Gain
Figure 14. Output Capacitance
100
10
1
0.1
0.01
0.001 010
IC, COLLECTOR CURRENT (mA)
25°C
Vin, INPUT VOLTAGE (VOLTS)
-25°C
Figure 15. Output Current versus Input Voltage
hFE , CURRENT GAIN (NORMALIZED)
1000
100
10 1 10 100
IC, COLLECTOR CURRENT (mA)
25°C
-25°C
Figure 16. Input Voltage versus Output Current
IC, COLLECTOR CURRENT (mA)
1
0.1
0.01 010203040
75°C
25°C
VCE(sat) , MAXIMUM COLLECTOR VOLTAGE (VOLTS)
50
010203040
1
0.8
0.6
0.4
0.2
0
VR, REVERSE BIAS VOLTAGE (VOLTS)
Cob , CAPACITANCE (pF)
12345 6789
f = 1 MHz
lE = 0 V
TA = 25°C
VO = 5 V
VO = 2 V
IC/IB=10
TA=75°C
TA=75°C
TA=-25°C
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TYPICAL ELECTRICAL CHARACTERISTICS
MMUN2114LT1
35
Vin, INPUT VOLTAGE (VOLTS)
10
1
0.1 01020304050
100
10
10246810
4.5
4
3.5
3
2.5
2
1.5
1
0.5
00 2 4 6 81015202530 404550
VR, REVERSE BIAS VOLTAGE (VOLTS)
Vin, INPUT VOLTAGE (VOLTS)
IC, COLLECTOR CURRENT (mA)
Figure 17. VCE(sat) versus IC
IC, COLLECTOR CURRENT (mA)
020406080
VCE(sat) , MAXIMUM COLLECTOR VOLTAGE (VOLTS)
Figure 18. DC Current Gain
Figure 19. Output Capacitance Figure 20. Output Current versus Input Voltage
Cob , CAPACITANCE (pF)
Figure 21. Input Voltage versus Output Current
IC, COLLECTOR CURRENT (mA)
1
0.1
0.01
0.001
f = 1 MHz
lE = 0 V
TA = 25°C
LOAD
+12 V
Figure 22. Inexpensive, Unregulated Current Source
Typical Application
for PNP BRTs
TA=-25°C
75°C
25°C
TA=75°C25°C
-25°C
VO = 5 V
VO = 0.2 V TA=-25°C
25°C
75°C
IC/IB=10
hFE, DC CURRENT GAIN (NORMALIZED)
1 10 100
IC, COLLECTOR CURRENT (mA)
-25°C
25°C
TA=75°C
VCE = 10 V
180
160
140
120
100
80
60
40
20
02 4 6 8 1520405060708090
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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.
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 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.
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
PD = TJ(max) – TA
RθJA
PD = 150°C – 25°C
556°C/W = 225 milliwatts
The power dissipation of the SOT–23 is a function of the
pad size. This can vary from the minimum pad size for
soldering to a pad size given for maximum power dissipa-
tion. Power dissipation for a surface mount device is deter-
mined b y T J(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–23
package, PD can be calculated as follows:
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 milli-
watts. 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 time could result in device failure. There-
fore, 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.
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 exces-
sive thermal shock and stress which can result in damage
to the device.
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STEP 1
PREHEAT
ZONE 1
RAMP"
STEP 2
VENT
SOAK"
STEP 3
HEATING
ZONES 2 & 5
RAMP"
STEP 4
HEATING
ZONES 3 & 6
SOAK"
STEP 5
HEATING
ZONES 4 & 7
SPIKE"
STEP 6
VENT
STEP 7
COOLING
200°C
150°C
100°C
50°C
TIME (3 TO 7 MINUTES TOTAL) TMAX
SOLDER IS LIQUID FOR
40 TO 80 SECONDS
(DEPENDING ON
MASS OF ASSEMBLY)
205° TO 219°C
PEAK AT
SOLDER JOINT
DESIRED CURVE FOR LOW
MASS ASSEMBLIES
100°C
150°C
160°C
140°C
Figure 23. Typical Solder Heating Profile
DESIRED CURVE FOR HIGH
MASS ASSEMBLIES
170°C
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 t o the next. Figure 7 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.
SOLDER STENCIL GUIDELINES
Prior to placing surface mount components onto a printed
circuit board, solder paste must be applied to the pads. A
solder stencil is required to screen the optimum amount of
solder paste onto the footprint. The stencil is made of brass
or stainless steel with a typical thickness of 0.008 inches.
The stencil opening size for the surface mounted package
should be the same as the pad size on the printed circuit
board, i.e., a 1:1 registration.
TYPICAL SOLDER HEATING PROFILE
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 i t has a lar ge 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.
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PACKAGE DIMENSIONS
SOT–23
TO–236AB
CASE 318–08
ISSUE AF
STYLE 6:
PIN 1. BASE
2. EMITTER
3. COLLECTOR
DJ
K
L
A
C
BS
H
GV
3
12
DIM
A
MIN MAX MIN MAX
MILLIMETERS
0.1102 0.1197 2.80 3.04
INCHES
B0.0472 0.0551 1.20 1.40
C0.0350 0.0440 0.89 1.11
D0.0150 0.0200 0.37 0.50
G0.0701 0.0807 1.78 2.04
H0.0005 0.0040 0.013 0.100
J0.0034 0.0070 0.085 0.177
K0.0140 0.0285 0.35 0.69
L0.0350 0.0401 0.89 1.02
S0.0830 0.1039 2.10 2.64
V0.0177 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.
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Notes
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without further notice to any products herein. SCILLC makes no warranty , representation or guarantee regarding the suitability of its products for any particular
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MMUN2111LT1/D
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