參數(shù)資料
型號(hào): MUN5135T3
廠商: ON SEMICONDUCTOR
元件分類: 小信號(hào)晶體管
英文描述: 100 mA, 50 V, PNP, Si, SMALL SIGNAL TRANSISTOR
封裝: SC-70, 3 PIN
文件頁(yè)數(shù): 4/16頁(yè)
文件大?。?/td> 136K
代理商: MUN5135T3
MUN5111T1 Series
http://onsemi.com
12
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
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.
Figure 33. Typical Solder Heating Profile
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
DESIRED CURVE FOR HIGH
MASS ASSEMBLIES
170°C
相關(guān)PDF資料
PDF描述
MUN5130T3 100 mA, 50 V, PNP, Si, SMALL SIGNAL TRANSISTOR
MUN5111T3 100 mA, 50 V, PNP, Si, SMALL SIGNAL TRANSISTOR
MUN5115T3 100 mA, 50 V, PNP, Si, SMALL SIGNAL TRANSISTOR
MUN5135T3 100 mA, 50 V, PNP, Si, SMALL SIGNAL TRANSISTOR
MUN5114T3 100 mA, 50 V, PNP, Si, SMALL SIGNAL TRANSISTOR
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MUN5136 制造商:WEITRON 制造商全稱:Weitron Technology 功能描述:Bias Resistor Transistor PNP Silicon
MUN5136DW 制造商:WEITRON 制造商全稱:Weitron Technology 功能描述:Dual Bias Resistor Transistor PNP Silicon
MUN5136DW1T1 功能描述:TRANS BRT PNP DUAL 50V SOT363 RoHS:否 類別:分離式半導(dǎo)體產(chǎn)品 >> 晶體管(BJT) - 陣列﹐預(yù)偏壓式 系列:- 標(biāo)準(zhǔn)包裝:3,000 系列:- 晶體管類型:1 個(gè) NPN,1 個(gè) PNP - 預(yù)偏壓式(雙) 電流 - 集電極 (Ic)(最大):70mA,100mA 電壓 - 集電極發(fā)射極擊穿(最大):50V 電阻器 - 基極 (R1)(歐):47k,2.2k 電阻器 - 發(fā)射極 (R2)(歐):47k 在某 Ic、Vce 時(shí)的最小直流電流增益 (hFE):70 @ 5mA,5V Ib、Ic條件下的Vce飽和度(最大):300mV @ 500µA,10mA 電流 - 集電極截止(最大):- 頻率 - 轉(zhuǎn)換:100MHz,200MHz 功率 - 最大:250mW 安裝類型:表面貼裝 封裝/外殼:6-TSSOP,SC-88,SOT-363 供應(yīng)商設(shè)備封裝:PG-SOT363-6 包裝:帶卷 (TR) 其它名稱:SP000784046
MUN5136DW1T1G 制造商:ON Semiconductor 功能描述:SS SC88 BR XSTR PNP 50V - Tape and Reel
MUN5136T1 功能描述:TRANS BRT PNP 100MA 50V SOT-323 RoHS:否 類別:分離式半導(dǎo)體產(chǎn)品 >> 晶體管(BJT) - 單路﹐預(yù)偏壓式 系列:- 標(biāo)準(zhǔn)包裝:10,000 系列:- 晶體管類型:NPN - 預(yù)偏壓 電流 - 集電極 (Ic)(最大):100mA 電壓 - 集電極發(fā)射極擊穿(最大):50V 電阻器 - 基極 (R1)(歐):47k 電阻器 - 發(fā)射極 (R2)(歐):47k 在某 Ic、Vce 時(shí)的最小直流電流增益 (hFE):70 @ 5mA,5V Ib、Ic條件下的Vce飽和度(最大):300mV @ 500µA,10mA 電流 - 集電極截止(最大):- 頻率 - 轉(zhuǎn)換:100MHz 功率 - 最大:250mW 安裝類型:表面貼裝 封裝/外殼:SC-70,SOT-323 供應(yīng)商設(shè)備封裝:PG-SOT323-3 包裝:帶卷 (TR) 其它名稱:SP000756242