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PTF51138R00QXEA

更新时间： 2024-01-28 08:55:16
品牌 Logo 应用领域
威世 - VISHAY 电阻器
页数 文件大小 规格书
4页 164K
描述
RESISTOR, METAL FILM, 0.05 W, 0.02 %, 15 ppm, 138 ohm, THROUGH HOLE MOUNT, AXIAL LEADED, ROHS COMPLIANT

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PTF51138R00QXEA 技术参数

是否无铅： 含铅是否Rohs认证： 不符合
生命周期：Active包装说明：Axial,
Reach Compliance Code：compliantECCN代码：EAR99
风险等级：5.59构造：Tubular
JESD-609代码：e0引线直径：0.41 mm
引线长度：38.1 mm安装特点：THROUGH HOLE MOUNT
端子数量：2最高工作温度：150 °C
最低工作温度：-55 °C封装直径：1.78 mm
封装长度：3.81 mm封装形状：TUBULAR PACKAGE
封装形式：Axial包装方法：TR
额定功率耗散 (P)：0.05 W额定温度：85 °C
电阻：138 Ω电阻器类型：FIXED RESISTOR
子类别：Fixed Resistors表面贴装：NO
技术：METAL FILM温度系数：15 ppm/ °C
端子面层：Tin/Lead (Sn/Pb)端子形状：WIRE
容差：0.02%工作电压：200 V
Base Number Matches：1

PTF51138R00QXEA 数据手册

 浏览型号PTF51138R00QXEA的Datasheet PDF文件第1页浏览型号PTF51138R00QXEA的Datasheet PDF文件第2页浏览型号PTF51138R00QXEA的Datasheet PDF文件第4页 
PTF  
Metal Film Resistors, High Precision, High Stability  
Vishay Dale  
LOAD LIFE SHIFT DUE TO POWER AND DERATING (AT 85 °C)  
The power rating for the PTF parts is tied to the derating temperature, the heat rise of the parts, and the ΔR for the load life performance.  
When the tables/graphs below are used together they show that when the parts are run at higher power ratings, the parts will run hotter,  
which has the potential of causing the resistance of the parts to shift more over the life of the part.  
LOAD LIFE SHIFT VS. POWER RATING  
CONDITIONS OF TEST  
MIL-PRF-55182 Paragraph 4.8.18  
1000 h rated power at + 85 °C  
MAXIMUM ΔR (TYPICAL TEST LOTS)  
0.15 % 0.5 %  
POWER RATING AT + 85 °C  
LOAD LIFE  
≤
0.04 %  
≤
≤
≤
1.0 %  
MODEL  
PTF51  
PTF56  
PTF65  
1/20 W  
1/8 W  
1/4 W  
1/10 W  
1/8 W  
1/4 W  
1/2 W  
1/4 W  
1/2 W  
3/4 W  
-
-
120  
100  
120  
100  
PTF51  
PTF56  
PTF65  
80  
80  
60  
60  
40  
20  
0
40  
20  
0
- 55  
- 25  
0
25  
50  
75  
85  
100  
125  
150  
175  
200  
0
0.125 0.25 0.375 0.5 0.625 0.75 0.875  
1
1.125  
AMBIENT TEMPERATURE IN °C  
APPLIED POWER IN W  
DERATING  
THERMAL RESISTANCE  
Examꢀle: When a PTF56 part is run at 1/8 W in a 70 °C ambient environment, the resistor will generate enough heat that the surface  
temperature of the part will reach about 17 °C over the ambient temperature, and over the life of the part this could cause the resistance  
value to shift up to 0.04 %.  
If the same resistor was instead run at 1/4 W in a 70 °C environment, the element will heat up to about 30 °C over ambient, and over the life  
of the part the resistance value could shift roughly 0.5 %.  
And if the resistor was run at its maximum power rating of 1/2 W in a 70 °C environment, it will heat up to about 61°C over ambient, and you  
could see the resistance value shift roughly 1 % over the life of the part.  
TEMPERATURE COEFFICIENT OF RESISTANCE  
Temperature coefficient (TC) of resistance is normally stated as the maximum amount of resistance change from the original + 25 °C value  
as the ambient temperature increases or decreases. This is most commonly expressed in parts per million per degree centigrade (ppm/°C).  
The resistance curve over the operating temperature range is usually a non-linear curve within predictable maximum limits. PTF resistors  
have a very unifom resistance temperature characteristic when measured over the operating range of - 20 °C to + 85 °C. The standard  
temperature coefficients available are  
X = 15 ppm/°C, Y = 10 ppm/°C and Z = 5 ppm/°C.  
Some applications of the PTF require operation beyond the specifications of - 20 °C to + 85 °C. The change in temperature coefficient of  
resistance is very small (less than 0.05 ppm/°C) over the expanded temperature range of - 55 °C to + 150 °C. Therefore, when operating  
outside the range - 20 °C to + 85 °C, the designer can plan for a worst case addition of 0.05 ppm/°C for each degree centigrade beyond  
either - 20 °C or + 85 °C as indicated in the graph. This applies to all three temperature coefficient codes.  
4
3
2
1
- 20 °C TO + 85 °  
C
BASE TC LIMIT  
0
- 50 - 40 - 30 - 20  
90 100 110 120 130 140 150  
X, Y  
or Z  
EXPANDED  
OPERATING RANGE  
EXPANDED  
OPERATING RANGE  
- 85 °  
°
C
C TO + 150  
C
- 55 °C TO - 20 °  
Examꢀle: Assume the operating characteristics demand a temperature range from - 55 °C to + 125 °C. This requires a 35 °C Δ below  
- 20 °C and a 40 °C Δ above + 85 °C. The extreme Δ being 40 °C means that the worst case addition to the specified TC limit of  
0.05 ppm/°C times 40 °C or 2 ppm/°C. Therefore, a Z which is characterized by a base TC limit of 5 ppm/°C over the temperature  
range of - 20 °C to + 85 °C will exhibit a maximum temperature coefficient of 7 ppm/°C over the expanded portion of the temperature  
range of - 55 °C to + 125 °C.  
www.vishay.com  
88  
For technical questions, contact: ff2aresistors@vishay.com  
Document Number: 31019  
Revision: 18-Nov-10  
1234

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