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参数资料
| 型号： | MJD18002D2-1 |
| 厂商： | ON SEMICONDUCTOR |
| 元件分类： | 功率晶体管 |
| 英文描述： | 2 A, 450 V, NPN, Si, POWER TRANSISTOR |
| 封装： | CASE 369-07, DPAK-3 |
| 文件页数： | 3/16页 |
| 文件大小： | 142K |
| 代理商： | MJD18002D2-1 |
MJD18002D2
http://onsemi.com
11
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 33 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/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 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
170°C
140°C
DESIRED CURVE FOR HIGH
MASS ASSEMBLIES
Figure 33. Typical Solder Heating Profile
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| MJD32-1 | 3 A, 40 V, PNP, Si, POWER TRANSISTOR |
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| MJE13005BD | 4 A, 400 V, NPN, Si, POWER TRANSISTOR |
| MJE13005AN | 4 A, 400 V, NPN, Si, POWER TRANSISTOR |
| MJE13005AJ | 4 A, 400 V, NPN, Si, POWER TRANSISTOR |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MJD18002D2T4 | 功能描述:两极晶体管 - BJT BIP NPN 2A 450V TR RoHS:否 制造商:STMicroelectronics 配置: 晶体管极性:PNP 集电极—基极电压 VCBO: 集电极—发射极最大电压 VCEO:- 40 V 发射极 - 基极电压 VEBO:- 6 V 集电极—射极饱和电压: 最大直流电集电极电流: 增益带宽产品fT: 直流集电极/Base Gain hfe Min:100 A 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PowerFLAT 2 x 2 |
| MJD18002D2T4G | 功能描述:两极晶体管 - BJT BIP NPN 2A 450V TR F RoHS:否 制造商:STMicroelectronics 配置: 晶体管极性:PNP 集电极—基极电压 VCBO: 集电极—发射极最大电压 VCEO:- 40 V 发射极 - 基极电压 VEBO:- 6 V 集电极—射极饱和电压: 最大直流电集电极电流: 增益带宽产品fT: 直流集电极/Base Gain hfe Min:100 A 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PowerFLAT 2 x 2 |
| MJD200 | 功能描述:两极晶体管 - BJT 5A 25V 12.5W NPN RoHS:否 制造商:STMicroelectronics 配置: 晶体管极性:PNP 集电极—基极电压 VCBO: 集电极—发射极最大电压 VCEO:- 40 V 发射极 - 基极电压 VEBO:- 6 V 集电极—射极饱和电压: 最大直流电集电极电流: 增益带宽产品fT: 直流集电极/Base Gain hfe Min:100 A 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PowerFLAT 2 x 2 |
| MJD200_06 | 制造商:ONSEMI 制造商全称:ON Semiconductor 功能描述:Complementary Plastic Power Transistors |
| MJD200_11 | 制造商:ONSEMI 制造商全称:ON Semiconductor 功能描述:Complementary Plastic Power Transistors |
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