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| 型号： | ST7ETA503 |
| 厂商： | Copal Electronics Inc |
| 文件页数： | 2/4页 |
| 文件大小： | 0K |
| 描述： | TRIMMER 50K OHM 0.25W SMD |
| 产品目录绘图： | ST7ETA Series Side ST7ETA Series Bottom ST7ETA Series Top ST7ETA Series Footprint ST7ET(A,B) Series Circuit |
| 标准包装： | 1 |
| 系列： | ST7 |
| 电阻（欧姆）： | 50k |
| 功率（瓦特）： | 0.25W，1/4W |
| 容差： | ±20% |
| 温度系数： | ±100ppm/°C |
| 匝数： | 3 |
| 调节型： | 顶部调节 |
| 电阻材料： | 金属陶瓷 |
| 安装类型： | 表面贴装 |
| 端接类型： | J 引线 |
| 包装： | 标准包装 |
| 尺寸/尺寸： | 方形 - 0.252" L x 0.240" W x 0.134" H（6.40mm x 6.10mm x 3.40mm） |
| 其它名称： | ST7ETA503DKR |
COPAL ELECTRONICS
ST-7
SURFACE MOUNT TRIMMERS
■ LIST OF PART NUMBERS
<Nominal resistance values>
Adjustment
position
Shape of terminal
Form of packaging
Taping (reel) Plastic bag
50 Ω
10 k Ω
100 Ω 200 Ω 500 Ω 1 k Ω 2 k Ω 5 k Ω
20 k Ω 50 k Ω 100 k Ω 200 k Ω 500 k Ω 1 M Ω
Fig. 1
※ The above part numbers are all available with the respective combination of
A ( J-hook )
Top adjustment
B ( Gull wing )
Pieces in package
ST-7ETA
ST-7ETB
500 pcs./reel
ST-7EA
ST-7EB
50 pcs./pack
<Nominal resistance values> (Fig. 1).
※ Verify the above part numbers when placing orders.
※ Taping specification is not sold separately and must be purchased in reel units.
■ ELECTRICAL CHARACTERISTICS
■ MECHANICAL CHARACTERISTICS
Nominal resistance range
Resistance tolerance
Power ratings
Resistance law
Maximum input voltage
Maximum wiper current
Effective electrical turn
End resistance
50 Ω ~ 1 M Ω
± 20 %
0.25 W (70 °C) 0 W (125 °C)
Linear law
DC200 V or power rating, whichever is smaller
100 mA or power rating, whichever is smaller
2.5 turns
1 % or 2 Ω , whichever is greater
Mechanical turn
Operating torque
Mechanical stop
Rotational life
Thrust to shaft
Solderability
Shear (Adhesion)
Substrate bending
Pull-off strength
3 turns
5 mN·m {51 gf·cm} maximum
Clutch action
100 cycles [ Δ R/R ≦ ± (2 Ω + 3 %)]
5 N {0.51 kgf} minimum
245 ± 3 °C, 2 ~ 3 s
5 N {0.51 kgf} 10 s
Width 90 mm, bend 3 mm, 5 s, 1 time
5 N {0.51 kgf} 10 s
C.R.V.
Operating temp. range
1 % or 3 Ω , whichever is greater
? 55 ~ 125 °C
{ } ： Reference only
■ ENVIRONMENTAL CHARACTERISTICS
Temp. coefficient
Insulation resistance
Dielectric strength
Net weight
50 Ω : ± 250 10 -6 /°C maximum
100 Ω ~ 1 M Ω : ± 100 10 -6 /°C maximum
1000 M Ω minimum (DC500 V)
AC600 V, 60 s
Approx. 0.25 g
Test item
Thermal shock
Humidity
Shock
Vibration
Test conditions
? 65 ~ 125 °C (0.5 h), 5 cycles
? 10 ~ 65 °C (80 ~ 98 %),
10 cycles, 240 h
981 m/s 2 , 6 ms
6 directions for 3 times each
Amplitude 1.52 mm or
Acceleration 196 m/s 2 ,
Specifications
[ Δ R/R ≦ 2 %]
[S.S. ≦ 1 %]
[ Δ R/R ≦ 2 %]
[ Δ R/R ≦ 1 %]
[S.S. ≦ 1 %]
° C
250
Reflow profile for soldering heat evaluation 〉
( ° C) +5
Peak : 250 0
Over 230 ° C
200 Pre Heating Zone
180 ° C
150 ° C
150
90 ± 30 s
Load life
Low temp. operation
High temp. exposure
Immersion seal
10 ~ 2000 Hz, 3 directions, 12 times each
70 °C, 0.25 W, 1000 h
? 55 °C, 2 h
125 °C, 250 h
85 °C, 60 s
[ Δ R/R ≦ 3 %]
[S.S. ≦ 1 %]
[ Δ R/R ≦ 2 %]
[S.S. ≦ 2 %]
[ Δ R/R ≦ 3 %]
[S.S. ≦ 2 %]
No leaks (No continuous bubbles)
100
50
30 ± 10 s
Soldering Zone
Heating time
Soldering heat
Flow : 260 ± 3 °C as the temperature in a pot of
molten solder, immersion from head of terminal to
backside of board, 5 ~ 6 s, two times maximum
Reflow : Peak temperature 255 °C
(Please refer to the profile below.)
[ Δ R/R ≦ 1 %]
Manual soldering ： 350 ± 10 °C, 3 ~ 4 s
Reflow : two times maximum
Δ R/R ： Change in total resistance
S.S. ： Setting stability
■ Specifications are subject to change without notice. Specifications in this catalog are for reference. The formal specification sheets will be submitted upon request.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ST-7ETA503 | 制造商:Nidec Copal 功能描述:RES TRMR 50K OHM 20% 1/4W 3TURN 1.8MM J-HOOK SMD - Tape and Reel |
| ST7ETA504 | 功能描述:TRIMMER 500K OHM 0.25W SMD RoHS:否 类别:电位计，可变电阻器 >> 微調器 系列:ST7 标准包装:500 系列:Trimpot® TC86 - 开放框架 电阻（欧姆）:100k 功率（瓦特）:0.3W 容差:±20% 温度系数:±250ppm/°C 匝数:单路 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:散装 尺寸/尺寸:方形 - 0.303" L x 0.268" W x 0.299" H（7.70mm x 6.80mm x 7.60mm） 其它名称:TC86P-104 |
| ST-7ETA504 | 制造商:Nidec Copal 功能描述:RES TRMR 500K OHM 20% 1/4W 3TURN 1.8MM J-HOOK SMD - Tape and Reel |
| ST7ETB 50K | 功能描述:微调电阻器 - 表面贴装 ST7ETB503 RoHS:否 制造商:Murata 产品:Single-Turn Trimmer Potentiometers 产品类型:Single Turn 转数:1 元件类型:Cermet 锥度:Linear 电阻:10 kOhms 电压额定值: 端接类型:SMD/SMT 功率额定值:250 mW (1/4 W) 容差:20 % 温度系数:150 PPM / C |
| ST7ETB 5K | 功能描述:微调电阻 - 通孔 RoHS:否 制造商:Vishay/Sfernice 产品:Trimmer Resistors - Multi Turn 产品类型:Multiturn 转数:14 锥度:Linear 电阻:10 kOhms 电压额定值:250 V 端接类型:Pin 功率额定值:250 mW (1/4 W) 容差:10 % 温度系数:100 PPM / C |
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