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303139-75R9-E-B-L

产品描述Fixed Resistor, Metal Foil, 0.25W, 75.9ohm, 47V, 0.2% +/-Tol, -.2,.2ppm/Cel, 2412
产品类别无源元件    电阻器   
文件大小503KB,共7页
制造商Vishay(威世)
官网地址http://www.vishay.com
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303139-75R9-E-B-L概述

Fixed Resistor, Metal Foil, 0.25W, 75.9ohm, 47V, 0.2% +/-Tol, -.2,.2ppm/Cel, 2412

303139-75R9-E-B-L规格参数

参数名称属性值
是否无铅含铅
是否Rohs认证不符合
厂商名称Vishay(威世)
包装说明SMT, 2412
Reach Compliance Codecompliant
ECCN代码EAR99
构造Molded Chip
制造商序列号303139
端子数量2
最高工作温度125 °C
最低工作温度-55 °C
封装高度2.49 mm
封装长度5.99 mm
封装形式SMT
封装宽度3.2 mm
包装方法Bulk
额定功率耗散 (P)0.25 W
参考标准MIL-PRF-55182
电阻75.9 Ω
电阻器类型FIXED RESISTOR
系列303139
尺寸代码2412
技术METAL FOIL
温度系数-.2,.2 ppm/°C
容差0.2%
工作电压47 V
Base Number Matches1

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303139, 303140
Vishay Foil Resistors
Models # 303139 and 303140 - Molded Surface Mount Space and Military
Grade Resistors SMRxDZ with Screen/Test Flow in Compliance with
EEE-INST-002, (Tables 2A and 3A, Film/Foil, Level 1) and MIL-PRF-55182
FEATURES
Temperature coefficient of resistance (TCR):
± 0.2 ppm°C typical (- 55 °C to + 125 °C, + 25 °C ref.)
Tolerance: to ± 0.02 %
Power coefficient of resistance (PCR)
“ΔR due to self heating”: 5 ppm at rated power
Flexible terminations ensure minimal stress transference
from the PCB due to a difference in thermal coefficient of
expansions (TCE)
Electrostatic discharge (ESD) up to 25 000 V
Load life stability: ± 0.005 % (70 °C, 2000 h at rated power)
Resistance range: 5
Ω
to 40 kΩ
Vishay Foil resistors are not restricted to standard values;
specific “as requested” values can be supplied at no extra
cost or delivery (e.g. 1K2345 vs. 1K)
Maximum power: to 600 mW at 70 °C
Non-inductive, non-capacitive design
Current noise: - 40 dB
Voltage coefficient: < 0.1 ppm/V
Non-inductive: < 0.08 µH typical
Non hot spot design
Terminal finish: tin/lead alloy
Matched sets with TCR tracking are available upon
request
For oriented performances please contact us
For prototype units, append a “U” to the model number
(example: 303139U). These units pass all tests per table 3
(page 4) with no destructive qualification testing required
(table 4, page 4). For more information, please contact
foil@vishaypg.com
INTRODUCTION
The 303139, 303140 are ultra high precision molded surface
mountable resistors offering all the elements of precision;
including low TCR, tight tolerance, long term stability, low
noise, low thermal EMF, and non-measurable voltage
coefficient. One of the important parameters influencing
stability is the temperature coefficient of resistance (TCR).
Although the TCR of foil resistors is considered extremely
low, this characteristic has been further refined over the
years. These resistors utilize ultra high precision Bulk Metal
®
Z-Foil.
The Z-Foil technology provides a significant reduction of
the resistive element’s sensitivity to ambient temperature
variations (TCR) and to self heating when power is applied
(power coefficient).
Voltage division with tight tracking < 2 ppm/°C can be
achieved with 2
randomly
selected units even with a large
ratio between the two values.
Our application engineering department is available to
advise and make recommendations.
TABLE 1 - TOLERANCE AND TCR VS.
RESISTANCE VALUE
(- 55 °C to + 125 °C, + 25 °C ref.)
VALUE
250
Ω
to 40 kΩ
50
Ω
to < 250
Ω
20
Ω
to < 50
Ω
10
Ω
to < 20
Ω
5
Ω
to < 10
Ω
ABSOLUTE
TOLERANCE
± 0.02 %
± 0.05 %
± 0.1 %
± 0.2 %
± 0.5 %
TYPICAL TCR AND
MAX. SPREAD
(ppm/°C)
± 0.2 ± 1.8
± 0.2 ± 1.8
± 0.2 ± 2.8
± 0.2 ± 4.8
± 0.2 ± 6.8
FIGURE 1 - POWER DERATING CURVE
200
175
Rated Power (%)
150
125
100
75
50
25
0
- 75
- 25
+ 25
+ 75
+ 125
Ambient Temperature (°C)
+ 175
- 55 °C
+ 70 °C
Document Number: 63165
Revision: 27-Jul-10
For any questions, contact:
foil@vishaypg.com
www.foilresistors.com
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