- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄369920 > MMSF3P03HDR2 (MOTOROLA INC) TMOS P-CHANNEL FIELD EFFECT TRANSISTORS PDF資料下載
參數(shù)資料
| 型號(hào)： | MMSF3P03HDR2 |
| 廠商： | MOTOROLA INC |
| 元件分類： | JFETs |
| 英文描述： | TMOS P-CHANNEL FIELD EFFECT TRANSISTORS |
| 中文描述： | 4.6 A, 30 V, 0.1 ohm, P-CHANNEL, Si, POWER, MOSFET |
| 文件頁(yè)數(shù)： | 9/10頁(yè) |
| 文件大小： | 329K |
| 代理商： | MMSF3P03HDR2 |
9
Motorola TMOS Power MOSFET Transistor Device Data
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
16 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
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/in-
frared 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 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”
170
°
C
STEP 6
VENT
STEP 7
COOLING
200
°
C
150
°
C
100
°
C
50
°
C
TIME (3 TO 7 MINUTES TOTAL)
Figure 16. Typical Solder Heating Profile
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
DESIRED CURVE FOR HIGH
MASS ASSEMBLIES
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MMSF3PO3HD | TMOS P-CHANNEL FIELD EFFECT TRANSISTORS |
| MMSZ5227BT1 | Low Current Operation at 250 ，Low Reverse Leakage,Low Noise Zener Diode |
| MMSZ5229BS | Low Current Operation at 250 ，Low Reverse Leakage,Low Noise Zener Diode |
| MMSZ5255BS | Low Current Operation at 250 ，Low Reverse Leakage,Low Noise Zener Diode |
| MMSZ5225BS | Low Current Operation at 250 ，Low Reverse Leakage,Low Noise Zener Diode |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MMSF4205R2 | 制造商:ON Semiconductor 功能描述:Trans MOSFET P-CH 20V 10A 8-Pin SOIC T/R |
| MMSF4N01HD | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:TMOS MOSFET 5.8 AMPERES 20 VOLTS |
| MMSF4N01HDR2 | 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:ON Semiconductor 功能描述: |
| MMSF4P01HD | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:SINGLE TMOS POWER FET 4.0 AMPERES 12 VOLTS |
| MMSF5N02HD | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:SINGLE TMOS POWER MOSFET 5.0 AMPERES 20 VOLTS |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。