công cụ tìm kiếm bảng dữ liệu linh kiện điện tử
  Vietnamese  ▼
ALLDATASHEET.VN

X  

MMBD451LT1 bảng dữ liệu(PDF) 3 Page - Motorola, Inc

tên linh kiện MMBD451LT1
Giải thích chi tiết về linh kiện  Schottky Barrier Diodes
Download  4 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
nhà sản xuất  MOTOROLA [Motorola, Inc]
Trang chủ  http://www.freescale.com
Logo MOTOROLA - Motorola, Inc

MMBD451LT1 bảng dữ liệu(HTML) 3 Page - Motorola, Inc

  MMBD451LT1 Datasheet HTML 1Page - Motorola, Inc MMBD451LT1 Datasheet HTML 2Page - Motorola, Inc MMBD451LT1 Datasheet HTML 3Page - Motorola, Inc MMBD451LT1 Datasheet HTML 4Page - Motorola, Inc  
Zoom Inzoom in Zoom Outzoom out
 3 / 4 page
background image
MMBD451LT1
3
Motorola Small–Signal Transistors, FETs and Diodes Device Data
INFORMATION FOR USING THE SOT–323 SURFACE MOUNT PACKAGE
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 size to insure proper solder connection
interface between the board and the package. With the
correct pad geometry, the packages will self align when
subjected to a solder reflow process.
mm
inches
0.035
0.9
0.075
0.7
1.9
0.028
0.65
0.025
0.65
0.025
SC–70/SOT–323 POWER DISSIPATION
The power dissipation of the SC–70/SOT–323 is a function
of the collector 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 surface mount
device is determined by TJ(max), the maximum rated junction
temperature of the die, R
θJA, the thermal resistance from the
device junction to ambient; and the operating temperature,
TA. Using the values provided on the data sheet, PD can be
calculated as follows.
PD =
TJ(max) – TA
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
0.625
°C/W
= 200 milliwatts
The 0.625
°C/W assumes the use of the recommended
footprint on a glass epoxy printed circuit board to achieve a
power dissipation of 200 milliwatts. There are other alterna-
tives to achieving higher power dissipation from the
SC–70/SOT–323 package. 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 300 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 in device failure. Therefore, the
following items should always be observed in order to
minimize the thermal stress to which the devices are
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.


Số phần tương tự - MMBD451LT1

nhà sản xuấttên linh kiệnbảng dữ liệuGiải thích chi tiết về linh kiện
logo
Pan Jit International I...
MMBD452 PANJIT-MMBD452 Datasheet
58Kb / 4P
   SURFACE MOUNT SCHOTTKY DIODE
logo
Shenzhen Luguang Electr...
MMBD452 LUGUANG-MMBD452 Datasheet
241Kb / 2P
   Dual Hot Carrier Mixer Diodes
logo
Diode Semiconductor Kor...
MMBD452 DSK-MMBD452 Datasheet
227Kb / 3P
   Dual Hot-Carrier Diodes
logo
Galaxy Semi-Conductor H...
MMBD452 BILIN-MMBD452 Datasheet
155Kb / 3P
   Dual Hot-Carrier Diodes
MMBD452 BILIN-MMBD452 Datasheet
212Kb / 3P
   Schottky Barrier Diodes
More results

Mô tả tương tự - MMBD451LT1

nhà sản xuấttên linh kiệnbảng dữ liệuGiải thích chi tiết về linh kiện
logo
AiT Semiconductor Inc.
B0520W AITSEMI-B0520W Datasheet
531Kb / 5P
   SCHOTTKY DIODES SCHOTTKY BARRIER DIODES
REV1.0
B0520WS AITSEMI-B0520WS Datasheet
522Kb / 4P
   SCHOTTKY DIODES SCHOTTKY BARRIER DIODES
REV1.0
logo
Formosa MS
FM0520-M FORMOSA-FM0520-M Datasheet
80Kb / 2P
   Chip Schottky Barrier Diodes - Chip Schottky Barrier Diodes
logo
Leshan Radio Company
MMBD101LT1 LRC-MMBD101LT1 Datasheet
52Kb / 2P
   Schottky Barrier Diodes
RB721Q LRC-RB721Q Datasheet
20Kb / 1P
   SCHOTTKY BARRIER DIODES
logo
ON Semiconductor
BAT54AWT1 ONSEMI-BAT54AWT1 Datasheet
49Kb / 4P
   Schottky Barrier Diodes
October, 2005 ??Rev. 1
logo
TRANSYS Electronics Lim...
RB420D TEL-RB420D Datasheet
72Kb / 1P
   Schottky barrier Diodes
RB520S-30 TEL-RB520S-30 Datasheet
90Kb / 2P
   Schottky barrier Diodes
RB521S-30 TEL-RB521S-30 Datasheet
88Kb / 2P
   Schottky barrier Diodes
RB751G-40 TEL-RB751G-40 Datasheet
99Kb / 2P
   Schottky barrier Diodes
logo
E-Tech Electronics LTD
BAT54RCLT1 ETL-BAT54RCLT1 Datasheet
78Kb / 1P
   Schottky Barrier Diodes
More results


Html Pages

1 2 3 4


bảng dữ liệu tải về

Go To PDF Page


Link URL




Chính sách bảo mật
ALLDATASHEET.VN
Cho đến nay ALLDATASHEET có giúp ích cho doanh nghiệp của bạn hay không?  [ DONATE ] 

Alldatasheet là   |   Quảng cáo   |   Liên lạc với chúng tôi   |   Chính sách bảo mật   |   Trao đổi link   |   Tìm kiếm theo nhà sản xuất
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com