- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄30763 > LSM2-T/6-W3-C 1-OUTPUT 19.8 W DC-DC REG PWR SUPPLY MODULE PDF資料下載
參數(shù)資料
| 型號(hào)： | LSM2-T/6-W3-C |
| 元件分類： | 電源模塊 |
| 英文描述： | 1-OUTPUT 19.8 W DC-DC REG PWR SUPPLY MODULE |
| 封裝： | ROHS COMPLIANT |
| 文件頁(yè)數(shù)： | 2/17頁(yè) |
| 文件大?。?/td> | 1394K |
| 代理商： | LSM2-T/6-W3-C |
第1頁(yè)當(dāng)前第2頁(yè)第3頁(yè)第4頁(yè)第5頁(yè)第6頁(yè)第7頁(yè)第8頁(yè)第9頁(yè)第10頁(yè)第11頁(yè)第12頁(yè)第13頁(yè)第14頁(yè)第15頁(yè)第16頁(yè)第17頁(yè)
LSM2 Series
Single Output, Non-isolated, Selectable-Output POL DC/DC Converters
MDC_LSM2_A01 Page 0 of 7
P O W E R E L E C T R O N I C S D I V I S I O N
D C / D C C O N V E R T E R S
www.cd4power.com
Tape & Reel Surface Mount Package
DATEL's LSM2 series DC/DC converters are the only higher-current (6A) SMT
DC/DC's that can be automatically "pick-and-placed" using standard vacuum-
pickup equipment (nozzle size and style, vacuum pressure and placement
speed may need to be optimized for automated pick and place) and subse-
quently reflowed using high-temperature, lead-free solder.
Virtually all SMT DC/DC's today are unprotected "open-frame" devices as-
sembled by their vendors with high-temperature solder (usually Sn96.5/Ag3.5
with a melting point +22°C) so that you may attach them to your board using
low-temperature solder (usually Sn63/Pb37 with a melting point of +83°C).
Conceptually straightforward, this "stepped" solder approach has its limita-
tions, and it is clearly out of step with an industry trending toward the broad
use of lead-free solders. Are you to experiment and develop reflow profiles
from other vendors that ensure the components on those DC/DC never exceed
25-26°C? If those components get too hot, "double-reflow" could compro-
mise the reliability of their solder joints. Virtually all these devices demand you
"cool down" the Sn63 profile you are likely using today.
Figure 6. Reflow Solder Profile
DATEL is not exempted from the Laws of Physics, and we do not have magic
solders no one else has. Nevertheless, we have a simple and practical,
straightforward approach that works. We assemble our LSM2 SMT DC/DC's
using a high-temperature (+26°C), lead-free alloy (Sn96.2%, Ag2.5%,
Cu0.8%, Sb0.5%). The LSM2 design ensures co-planarity to within 0.004
inches (00m) of the unit's tin-plated (50 micro-inches) copper leads. See
Mechanical Data for additional information.
The disposable heat shield (patent pending), which has a cutaway exposing
the package leads, provides thermal insulation to internal components during
reflow and its smooth surface ideally doubles as the vacuum pick-up location
also. The insulation properties of the heat shield are so effective that tempera-
ture differentials as high as 50°C develop inside-to-outside the shield. Oven
temperature profiles with peaks of 250-260°C and dwell times exceeding 2
minutes above 22°C (the melting point of Sn96.5/Ag3.5) are easily achieved.
HEAT SHIELD OUTSIDE TEMPERA TURE
Sn96.5/Ag3.5 Melting P
oint
Sn63/Pb37 Meltin
g Point
250
200
150
100
50
0
50
100
150
200
250
300
350
400
221
183
PCB TEMPERA TURE INSIDETHE HEAT SHIELD
Te
m
perature
(
C)
Time (Seconds)
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LSM2-T/6-W3G-C | 1-OUTPUT 19.8 W DC-DC REG PWR SUPPLY MODULE |
| LSM2-T/6-D12-C | 1-OUTPUT 19.8 W DC-DC REG PWR SUPPLY MODULE |
| LSM2-T/6-D12G-C | 1-OUTPUT 19.8 W DC-DC REG PWR SUPPLY MODULE |
| LSN-1.2/16-W3J | 1-OUTPUT DC-DC REG PWR SUPPLY MODULE |
| LSN-1.5/16-W3J | 1-OUTPUT DC-DC REG PWR SUPPLY MODULE |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LSM2U | 功能描述:限位開關(guān) LIMIT SWITCH RoHS:否 制造商:Honeywell 觸點(diǎn)形式:SPDT 執(zhí)行器:Non-Contact 電流額定值:30 mA 電壓額定值 AC: 電壓額定值 DC:3.6 V 工作力:10 g IP 等級(jí):IP 67 NEMA 額定值:1, 4, 12, 13 端接類型:4-Pin M12 Connector 安裝:SMD/SMT |
| LSM-3.3/10-D12 | 功能描述:DC/DC轉(zhuǎn)換器 33W 12V to 3.3V 10A SMT Package RoHS:否 制造商:Murata 產(chǎn)品: 輸出功率: 輸入電壓范圍:3.6 V to 5.5 V 輸入電壓（標(biāo)稱）: 輸出端數(shù)量:1 輸出電壓（通道 1）:3.3 V 輸出電流（通道 1）:600 mA 輸出電壓（通道 2）: 輸出電流（通道 2）: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體尺寸: |
| LSM-3.3/10-D12-C | 功能描述:DC/DC轉(zhuǎn)換器 33W 12V to 3.3V 10A RoHS:否 制造商:Murata 產(chǎn)品: 輸出功率: 輸入電壓范圍:3.6 V to 5.5 V 輸入電壓（標(biāo)稱）: 輸出端數(shù)量:1 輸出電壓（通道 1）:3.3 V 輸出電流（通道 1）:600 mA 輸出電壓（通道 2）: 輸出電流（通道 2）: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體尺寸: |
| LSM-3.3/10-D12EB | 制造商:MURATA 制造商全稱:Murata Manufacturing Co., Ltd. 功能描述:10 Amp DC/DC Power Converter Evaluation Boards |
| LSM-3.3/10-D5 | 功能描述:DC/DC轉(zhuǎn)換器 33W 5V to 3.3V 10A SMT Package RoHS:否 制造商:Murata 產(chǎn)品: 輸出功率: 輸入電壓范圍:3.6 V to 5.5 V 輸入電壓（標(biāo)稱）: 輸出端數(shù)量:1 輸出電壓（通道 1）:3.3 V 輸出電流（通道 1）:600 mA 輸出電壓（通道 2）: 輸出電流（通道 2）: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體尺寸: |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。
