- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄358625 > 3386H-1-504 TRIMMER 11MM CERMET EIN 500K 300V 0.5W PDF資料下載
參數(shù)資料
| 型號： | 3386H-1-504 |
| 英文描述： | TRIMMER 11MM CERMET EIN 500K 300V 0.5W |
| 中文描述： | 修邊機(jī)11毫米艾因500K的300V金屬陶瓷為0.5W |
| 文件頁數(shù)： | 85/86頁 |
| 文件大?。?/td> | 3230K |
| 代理商： | 3386H-1-504 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁第63頁第64頁第65頁第66頁第67頁第68頁第69頁第70頁第71頁第72頁第73頁第74頁第75頁第76頁第77頁第78頁第79頁第80頁第81頁第82頁第83頁第84頁當(dāng)前第85頁第86頁
Specifications are subject to change without notice.
89
SINGLE-TURN SETTABILITY (3386)
MULTITURN SETTABILITY (3299)
400
300
200
MV.
500
400
MV.
0
1.7
3.4
5.1
SEC.
6.8
8.5
10.2
LESS EXPERIENCED
TECHNICIAN
EXPERIENCED
TECHNICIAN
LESS EXPERIENCED
TECHNICIAN
EXPERIENCED
TECHNICIAN
400
M.V.
400
M.V.
0
1.7
3.4
5.1
SEC.
6.8
8.5
10.2
Figure 2.
When accurate setting is required, a multiturn trimmer
can generally be set faster than a single-turn.
General Guidelines for Guarding Against Component Damage
To minimize temperature shock
Pre-heat boards to maximum acceptable level
Reduce time in solder
To avoid heating components above their maximum rated
temperature
Use lowest acceptable solder temperature
Use maximum allowable conveyor speed
Limit pre-heat temperature to maximum necessary
To limit time of exposure above rated temperature
Limit time in solder
After solder operation, cool board to wash temperature
before it enters wash
To minimize temperature difference between top and bottom of
board
Apply pre-heat to both top and bottom
To reduce temperature shock on entering the moist environ-
ment of the wash
Use wash/rinse temperature as near component
temperature as possible
Extend time between solder process and wash
Cool board after solder operation, prior to entering wash
To minimize temperature variations as component travels
through moisture
Minimize number of wash/rinse and rinse/dry cycles
Use heated air for air knives (to counter evaporative
cooling effect)
Minimize difference between wash and rinse temperature
To minimize exposure to high-pressure water during board
wash
Select trimmer models with pin styles that orient the
rotor seal area away from exposure to the high-pressure
water stream
SETTABILITY
Settability refers to the ease with which a trimmer can be set
accurately to the position that produces the desired circuit condition.
Where the requirement is for obtaining a highly accurate set-
ting the preference is for cermet — because a small incremental
adjustment in a wirewound unit does not always produce the
expected change in output as the wiper moves off one turn of wire
and onto another.
Setting accuracy is better with a multiturn unit than with a
single-turn. This is especially true when the speed of setting is also
a requirement as on a production line (Figure 2).
Applications/Processing Guide
°C/Min.
Rate of Change of Profile
(Indicator of Level of Stability)
7
Unstable Temp
(# of Cycles)
Minutes
Figure 1.
Typical temperature profile for board washing
and soldering.
Critical profile parameters
Temperature Shock (°C)
Maximum Temperature (°C)
Temperature Exposure (Minimum)
Temperature Gradient (°C)
Temperature Shock Decrease in Water (°C)
Temperature Shock Decrease in Water & Air Pressure (°C)
Unstable Temperature (see next page)
7
1
2
3
4
5
6
STABILITY
Stability refers to the ability of the trimmer to remain at the
desired setting. Environmental factors play an important role here:
stability may be affected by temperature exposure, thermal shock/
cycling, humidity, and mechanical shock or vibration.
This is not a matter of concern in most applications, since
Bourns trimmers exhibit excellent stability under all specified condi-
tions. Stability is most often a concern when cermet trimmers are
used in low current "dry" circuits (50uA amps and below). Under
these conditions the contact resistance may vary, making the wiper
appear unstable. This is most noticeable in some rheostat applica-
tions. This can be avoided by using a wirewound unit, or choosing a
cermet trimmer that has been designed for dry-circuit applications.
Bourns applications engineers can assist you on this and other
questions.
ACCESSIBILITY
When selecting a trimmer and determining its placement on the
board, keep in mind the people who will have to use it. Bourns trim-
mers are available in a wide variety of sizes, shapes, configurations,
and placement of adjustment screws. You will usually find a unit on
which the access for adjustment will be convenient for the user.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| 322CNQ030 | 300 Amp Schottky Rectifier(300 A 肖特基整流器) |
| 3239-00 | 2.2 GHz Integer-N PLL for Low Phase Noise Applications |
| 323GT | 5.0mm Round Type LED Lamps |
| 3245A-MSOP8 | Constant Current Forward/Reverse Driver IC for Digital Cameras |
| 3250 | Square Trimming Potentiometer |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 3386H-1-504LF | 功能描述:微調(diào)電阻 - 通孔 3/8" 500Kohms 10% 0.5Watts Square RoHS:否 制造商:Vishay/Sfernice 產(chǎn)品:Trimmer Resistors - Multi Turn 產(chǎn)品類型:Multiturn 轉(zhuǎn)數(shù):14 錐度:Linear 電阻:10 kOhms 電壓額定值:250 V 端接類型:Pin 功率額定值:250 mW (1/4 W) 容差:10 % 溫度系數(shù):100 PPM / C |
| 3386H-1-504LF | 制造商:Bourns Inc 功能描述:RESISTORS CERMET VARIABLE ROTARY (POTEN |
| 3386H-1-504T | 功能描述:微調(diào)電阻 - 通孔 3/8"SQ 500KOHMS 10% 0.5WATTS RoHS:否 制造商:Vishay/Sfernice 產(chǎn)品:Trimmer Resistors - Multi Turn 產(chǎn)品類型:Multiturn 轉(zhuǎn)數(shù):14 錐度:Linear 電阻:10 kOhms 電壓額定值:250 V 端接類型:Pin 功率額定值:250 mW (1/4 W) 容差:10 % 溫度系數(shù):100 PPM / C |
| 3386H-1-504TLF | 功能描述:微調(diào)電阻 - 通孔 3/8" 500Kohms 10% 0.5Watts Square RoHS:否 制造商:Vishay/Sfernice 產(chǎn)品:Trimmer Resistors - Multi Turn 產(chǎn)品類型:Multiturn 轉(zhuǎn)數(shù):14 錐度:Linear 電阻:10 kOhms 電壓額定值:250 V 端接類型:Pin 功率額定值:250 mW (1/4 W) 容差:10 % 溫度系數(shù):100 PPM / C |
| 3386H-1-505 | 功能描述:微調(diào)電阻 - 通孔 3/8"SQ 5MOHMS 10% 0.5WATTS RoHS:否 制造商:Vishay/Sfernice 產(chǎn)品:Trimmer Resistors - Multi Turn 產(chǎn)品類型:Multiturn 轉(zhuǎn)數(shù):14 錐度:Linear 電阻:10 kOhms 電壓額定值:250 V 端接類型:Pin 功率額定值:250 mW (1/4 W) 容差:10 % 溫度系數(shù):100 PPM / C |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。