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参数资料
| 型号： | 3299W-1-503 |
| 厂商： | Bourns Inc. |
| 文件页数： | 1/1页 |
| 文件大小： | 0K |
| 描述： | TRIMMER 50K OHM 0.5W TH |
| 标准包装： | 50 |
| 系列： | Trimpot® 3299 - 密封式 |
| 电阻（欧姆）： | 50k |
| 功率（瓦特）： | 0.5W，1/2W |
| 容差： | ±10% |
| 温度系数： | ±100ppm/°C |
| 匝数： | 25 |
| 调节型： | 顶部调节 |
| 电阻材料： | 金属陶瓷 |
| 安装类型： | 通孔 |
| 端接类型： | PC 引脚 |
| 包装： | 管件 |
| 尺寸/尺寸： | 方形 - 0.395" L x 0.240" W x 0.375" H（10.03mm x 6.10mm x 9.53mm） |
| 其它名称： | 3299W-503 |
Features
■ 3/8 ” Square/ Multiturn / Cermet /
Industrial / Sealed
■ Five popular terminal styles
■ Standoffs
■ RoHS compliant* version available
■ For trimmer applications/processing
guidelines, click here
3299 - 3/8 ” Square Trimpot ? Trimming Potentiometer
Electrical Characteristics
Product Dimensions
Standard Resistance Table
Standard Resistance Range
3299P
Resistance
Resistance
.38
(.015)
................................10 to 2 megohms
(see standard resistance table)
Resistance Tolerance ........... ±10 % std.
Common Dimensions
1.09
(.043)
2.54
(.100)
2.54
(.100)
(Ohms)
10
20
50
Code
100
200
500
(.044)
ADJ. SLOT
(.022)
(.025)
(.020)
(tighter tolerance available)
Absolute Minimum Resistance
........................... 1 % or 2 ohms max.
(whichever is greater)
Contact Resistance Variation
........................ 1.0 % or 3 ohms max.
(whichever is greater)
Adjustability
Voltage .................................. ±0.01 %
Resistance ............................ ±0.05 %
Resolution ................................... In?nite
Insulation Resistance ............... 500 vdc.
1,000 megohms min.
Dielectric Strength
Sea Level................................ 900 vac
70,000 Feet ............................ 350 vac
E?ective Travel .................25 turns nom.
Environmental Characteristics
Power Rating (300 volts max.)
70 °C ...................................... 0.5 watt
1.12
9.53
(.375)
1.52
(.060)
10.03
(.395)
3
2
2.29 DIA. 1
(.090)
.56
X WIDE
.64 2.54
X DEEP
(.100)
BOTTOM VIEW
3299W
2.54
(.100)
2.54
(.100)
MIN.
6.22 ± 1.14
(.245 ± .045)
6.10 +.30/-.25
(.240 +.012/-.010)
.51
DIA. TYP.
5.23
(.206)
1.91
(.075)
3
2
1
BOTTOM VIEW
100 101
200 201
500 501
1,000 102
2,000 202
5,000 502
10,000 103
20,000 203
25,000 253
50,000 503
100,000 104
200,000 204
250,000 254
500,000 504
1,000,000 105
2,000,000 205
Popular distribution resistance values listed in
boldface. Special resistances available.
How To Order
3299 W - 1 - 103 LF
Model
Style
125 °C ....................................... 0 watt
Temperature Range ... -55 °C to +125 °C
Temperature Coe? cient ... ±100 ppm/°C
3299X
2.54
(.100)
2.54
(.100)
3
1.91
(.075)
Standard or Modi?ed
Product Indicator
-1 = Standard Product
Seal Test ......................85 °C Fluorinert?
Humidity .......MIL-STD-202 Method 103
96 hours
(2 % Δ TR, 10 Megohms IR)
Vibration ....... 20 G (1 % Δ TR; 1 % Δ VR)
Shock ......... 100 G (1 % Δ TR; 1 % Δ VR)
Load Life
............. 1,000 hours 0.5 watt @ 70 °C
(3 % Δ TR; 3 % or 3 ohms,
3299Y
2.54
(.100)
2.54
(.100)
2
1
BOTTOM VIEW
1.91
(.075)
3
2
1
2.54
Resistance Code
Terminations
LF = 100 % Tin-plated (RoHS compliant)
Blank = 90 % Tin / 10 % Lead-plated
(Standard)
Consult factory for other available options.
whichever is greater, CRV)
Rotational Life .......................200 cycles
(.100)
BOTTOM VIEW
(4 % Δ TR; 3 % or 3 ohms,
whichever is greater, CRV)
3299Z
2.54
(.100)
2.54
(.100)
3
1.91
(.075)
Physical Characteristics
2
Torque............................. 3.0 oz-in. max.
Mechanical Stops ................. Wiper idles
Terminals .......................Solderable pins
Weight ..................................... 0.035 oz.
1
BOTTOM VIEW
2.54
(.100)
Marking........................... Manufacturer’s
trademark, resistance code,
2
WIPER
1
wiring diagram, date code,
manufacturer’s model
number and style
Wiper ............... 50 % (Actual TR) ±10 %
Flammability ..........................U.L. 94V-0
Standard Packaging .....50 pcs. per tube
Adjustment Tool..............................H-90
CCW
CLOCKWISE
DIMENSIONS:
0.25
TOLERANCES: ±
(.010)
3 CW
MM
(INCHES)
EXCEPT WHERE NOTED
REV. 04/14
“Trimpot” is a registered trademark of Bourns, Inc.
?“Fluorinert” is a registered trademark of 3M Co.
*RoHS Directive 2002/95/EC Jan. 27, 2003 including
annex and RoHS Recast 2011/65/EU June 8, 2011.
Speci?cations are subject to change without notice.
The device characteristics and parameters in this data
sheet can and do vary in different applications and
actual device performance may vary over time.
Users should verify actual device performance in their
speci?c applications.
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