Datasheet MSD602-RT2 Datasheet (MOTOROLA)

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1
Motorola Small–Signal Transistors, FETs and Diodes Device Data
      
MAXIMUM RATINGS (T
A
= 25°C)
Rating
Collector–Base Voltage V
(BR)CBO
60 Vdc
Collector–Emitter Voltage V
(BR)CEO
50 Vdc
Emitter–Base Voltage V
(BR)EBO
7.0 Vdc
Collector Current — Continuous I
C
500 mAdc
Collector Current — Peak I
C(P)
1.0 Adc
THERMAL CHARACTERISTICS
Characteristic Symbol Max Unit
Power Dissipation P
D
200 mW
Junction Temperature T
J
150 °C
Storage Temperature T
stg
–55 ~ +150 °C
ELECTRICAL CHARACTERISTICS (T
A
= 25°C)
Characteristic
Symbol Min Max Unit
Collector–Emitter Breakdown Voltage (IC = 10 mAdc, IB = 0) V
(BR)CEO
50 Vdc
Collector–Base Breakdown Voltage (IC = 10 µAdc, IE = 0) V
(BR)CBO
60 Vdc
Emitter–Base Breakdown Voltage (IE = 10 µAdc, IC = 0) V
(BR)EBO
7.0 Vdc
Collector–Base Cutoff Current (VCB = 20 Vdc, IE = 0) I
CBO
0.1 µAdc
DC Current Gain
(1)
(VCE = 10 Vdc, IC = 150 mAdc) (VCE = 10 Vdc, IC = 500 mAdc)
h
FE1
h
FE2
120
40
240
Collector–Emitter Saturation Voltage (IC = 300 mAdc, IB = 30 mAdc) V
CE(sat)
0.6 Vdc
Output Capacitance (VCB = 10 Vdc, IE = 0, f = 1.0 MHz) C
ob
15 pF
1. Pulse Test: Pulse Width 300 µs, D.C. 2%.
DEVICE MARKING
Marking Symbol
WR
X
The “X” represents a smaller alpha digit Date Code. The Date Code indicates the actual month in which the part was manufactured.
Thermal Clad is a trademark of the Bergquist Company
Preferred devices are Motorola recommended choices for future use and best overall value.
Order this document
by MSD602–RT1/D

SEMICONDUCTOR TECHNICAL DATA
Motorola, Inc. 1996
Motorola Preferred Device
CASE 318D–03, STYLE 1
SC–59
2
1
3
COLLECTOR
3
2
BASE1EMITTER
REV 1
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MSD602-RT1
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Motorola Small–Signal Transistors, FETs and Diodes Device Data
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 will s elf align when subjected to a solder reflow process.
mm
inches
2.5–3.0
0.039
1.0
0.094
0.8
0.098–0.118
2.4
0.031
0.95
0.037
0.95
0.037
SC–59 POWER DISSIPATION
The power dissipation of the SC–59 is a function of the 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 s urface m ount 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 temperature, TA. Using t he values provided on the data sheet, PD can be calculated as follows:
PD =
T
J(max)
– T
A
R
θJA
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 200 milliwatts.
PD =
150°C – 25°C
625°C/W
= 200 milliwatts
The 6 25°C/W assumes the use o f the recommended footprint on a glass epoxy printed circuit board to achieve a power dissipation of 200 milliwatts. 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, a power dissipation of 400 milliwatts can be achieved 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 i n device failure. Therefore, t he following items s hould always be o bserved in order to minimize the thermal s tress to w hich t he d evices 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 should be a maximum of 10°C.
The soldering temperature and time should not exceed
260°C for more than 10 seconds.
When shifting from preheating to soldering, the
maximum temperature gradient should 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.
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MSD602-RT1
3
Motorola Small–Signal Transistors, FETs and Diodes Device Data
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 SC–59 package should be the same as the pad size on the printed circuit board, i.e., a 1:1 registration.
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 f or 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 m achines c ontrolled b y a computer, the computer remembers these profiles from one operating session to the next. Figure 1 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 o f soldering s ystem in u se, d ensity 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 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, t he main body of a c omponent may be up to 3 0 degrees cooler than the adjacent solder joints.
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)
T
MAX
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
DESIRED CURVE FOR HIGH
MASS ASSEMBLIES
100°C
150°C
160
°
C
170
°
C
140
°
C
Figure 1. Typical Solder Heating Profile
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MSD602-RT1
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Motorola Small–Signal Transistors, FETs and Diodes Device Data
PACKAGE DIMENSIONS
CASE 318D–03
ISSUE E
STYLE 1:
PIN 1. EMITTER
2. BASE
3. COLLECTOR
S
G
H
D
C
B
L
A
1
3
2
J
K
DIMAMIN MAX MIN MAX
INCHES
2.70 3.10 0.1063 0.1220
MILLIMETERS
B 1.30 1.70 0.0512 0.0669 C 1.00 1.30 0.0394 0.0511 D 0.35 0.50 0.0138 0.0196 G 1.70 2.10 0.0670 0.0826 H 0.013 0.100 0.0005 0.0040 J 0.10 0.26 0.0040 0.0102 K 0.20 0.60 0.0079 0.0236 L 1.25 1.65 0.0493 0.0649 S 2.50 3.00 0.0985 0.1181
NOTES:
1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982.
2. CONTROLLING DIMENSION: MILLIMETER.
SC–59
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. “T ypical” 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.
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MSD602–RT1/D
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