參數(shù)資料
型號(hào): MMSD1000LT1
廠商: Motorola, Inc.
元件分類(lèi): 參考電壓二極管
英文描述: SWITCHING DIODE
中文描述: 開(kāi)關(guān)二極管
文件頁(yè)數(shù): 5/8頁(yè)
文件大?。?/td> 171K
代理商: MMSD1000LT1
5
Motorola Small–Signal Transistors, FETs and Diodes Device Data
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 2. Typical Solder Heating Profile
DESIRED CURVE FOR HIGH
MASS ASSEMBLIES
170
°
C
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