- 您现在的位置：买卖IC网 > PDF目录364591 > AC03 (NXP Semiconductors N.V.) Cemented wirewound resistors PDF资料下载
参数资料
| 型号： | AC03 |
| 厂商： | NXP Semiconductors N.V. |
| 英文描述： | Cemented wirewound resistors |
| 中文描述： | 硬质合金线绕电阻 |
| 文件页数： | 5/24页 |
| 文件大小： | 144K |
| 代理商： | AC03 |
2000 Oct 20
5
BCcomponents
Product specification
Cemented wirewound resistors
AC01/03/04/05/07/10/15/20
P
ULSE
LOADING
CAPABILITIES
How to generate the maximum allowed pulse-load from the graphs composed for wirewound resistors of the AC-types.
Single pulse condition; see
Fig.3
1.
If the applied pulse energy in Joules or Wattseconds is
known and also the R-value to be used in the
application; take the R-value on the X-axis and go
vertically to the curved line. From this point go
horizontally to the Y-axis, this point gives the maimum
allowed pulse energy in Joules/ohm or Wattsec./ohm.
By multiplying this figure with -value in use gives the
maximum allowed pulse-energy in Joules or Wattsec. If
this figure is higher than the applied pulse-energy the
application is allowed. Otherwise take one of the other
graphs belonging to AC-types with higher P
n
.
2.
If, contrary to the information above, the applied
peak-voltage and impulse times t
i
are known. Calculate
the pulse-energy (E
p
) in Joules or Wattsec. by the use of
the following formula:
2
R
(V
p
= peak voltage; t
i
= impulse-time)
By dividing this result with the R
n
-value of the R in use,
gives the value Wattsec./ohm on the Y-axis. Draw a line
horizontally to the curved line and at the intersection
the vertical line to the X-axis gives the maximum
allowed R
n
-value to be used in the application. If this
R
n
-value is higher than the R-value to be used in the
application, the application is allowed. If not, take one
of the other graphs belonging to AC-types with higher P
n
or change the R
n
-value to be used.
Repetitive pulse condition; see
Fig.2
With these graphs we can determine the allowed
pulse-energy in Watts depending on the impulse- time t
i
and
the repetition time t
p
of the pulses. The parameter is the
Resistance Value. If the pulse shape is known (impulse-time
t
i
and repetition time t
p
), draw a line vertically from the
X-axis at the mentioned t
i
to the line of the involved R-value.
From the intersection the horizontal line to the Y- axis
indicates the maximum allowed pulse-load at a certain t
p
/t
i
.
If the vertical line from the X-axis crosses the applied t
p
/t
i
before reaching the R-line, this t
p
/t
i
line gives the maximum
allowed pulse-energy at the Y-axis. If the applied
pulse-energy is known (in Watts) and the impulse-time t
i
also, draw a line horizontally from the Y-axis to the crossing
with the pulse-line (t
i
) and find the possible R-value needed
in this application. The horizontal t
p
/t
i
lines give the
maximum allowed pulse-load till they reach the R-line, that
point indicates the maximum allowed impulse-time ti at the
horizontal axis.
Ep
Vp
t
i
×
=
相关PDF资料 |
PDF描述 |
|---|---|
| AC04 | Cemented wirewound resistors |
| AC05 | Cemented wirewound resistors |
| AC07 | Cemented wirewound resistors |
| AC15 | Cemented wirewound resistors |
| AC107 | Analog IC |
相关代理商/技术参数 |
参数描述 |
|---|---|
| AC-03 | 制造商:B&K Precision Corporation 功能描述: |
| AC03000000JAC00 | 制造商:VISHAY 制造商全称:Vishay Siliconix 功能描述:Cemented Wirewound Resistors |
| AC03000001000JAC00 | 功能描述:线绕电阻器 - 透孔 3watts 100ohms 5% RoHS:否 制造商:Bourns 电阻:10 Ohms 容差:5 % 功率额定值:7 W 温度系数:200 PPM / C 系列:FW 端接类型:Axial 工作温度范围:- 55 C to + 155 C 尺寸:9.5 mm Dia. x 26 mm L 封装:Ammo 产品:Power Resistors Wirewound High Energy |
| AC03000001000JACCS | 功能描述:线绕电阻器 - 透孔 3watts 100ohms 5% RoHS:否 制造商:IRC / TT electronics 电阻: 容差: 功率额定值: 温度系数: 系列: 端接类型: 工作温度范围: 尺寸: 封装: 产品: |
| AC03000001001JAC00 | 功能描述:线绕电阻器 - 透孔 3watts 1Kohms 5% RoHS:否 制造商:Bourns 电阻:10 Ohms 容差:5 % 功率额定值:7 W 温度系数:200 PPM / C 系列:FW 端接类型:Axial 工作温度范围:- 55 C to + 155 C 尺寸:9.5 mm Dia. x 26 mm L 封装:Ammo 产品:Power Resistors Wirewound High Energy |
发布紧急采购，3分钟左右您将得到回复。