4503 [TTELEC]
HIGH VOLTAGE PLANAR RESISTORS; 高压平面电阻
| 型号： | 4503 |
| 厂家： | 
TT Electronics |
| 描述： | HIGH VOLTAGE PLANAR RESISTORS |
| 文件： | 总2页 (文件大小：130K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
High Voltage
Planar Resistors
Welwyn Components
4500 Series
• Voltages up to 20kV dc.
Powers up to 4.5 Watts
•
TCR to 50ppm/°C
•
Customs design service available
•
Planar construction gives low inductance and
capacitance
•
Electrical Data
4501
4502
4503
4504
3
4505
2.8
4506
3.6
4507
4.5
Power rating at 70°C
Resistance range
watts
1
1.7
2
ohms 20k to 500M 36k to 750M 36k to 750M
62k to 1G
15k
51k to 1G
20k
82k to 1G
20k
180k to 1.5G
20k
Limiting element voltage
TCR (20°C to 70°C)
volts
ppm/°C
%
10k
10k
15k
100, 150 (see table below for 50ppm)
Resistance tolerance
1, 2, 5
Values
Any value to order
-55 to 125
Ambient temperature range
Value ranges for TCR of 100 ppm/°C
Value ranges for TCR of 150 ppm/°C
Value ranges available for
TCR of 50ppm/°C
°C
≤150M
≤270M
≤270M
≤470M
≤390M
≤680M
≤1.5G
>150M
>270M
>270M
>470M
>390M
>680M
<100M
<150M
<200M
<250M
<250M
<300M
<600M
Physical Data
Dimensions (mm) of Uncoated Resistors*
P (nominal)
Type
L max
25.7
25.7
38.7
38.7
51.2
51.2
51.2
H max
9
W max
450000
20.3
20.3
33.0
33.0
45.7
45.7
45.7
450000A
22.9
4501
4502
4503
4504
4505
4506
4507
2
2
2
2
2
2
2
13
9
22.9
35.6
13
9
35.6
48.3
13
25.7
48.3
48.3
*Conformally quoted resistors: Add 1mm to dimensions L and H and 0.5mm to W.
General Note
Welwyn Components reserves the right to make changes in product specification without notice or liability.
All information is subject to Welwyn’s own data and is considered accurate at time of going to print.
A subsidiary of
TT electronics plc
© Welwyn Components Limited · Bedlington, Northumberland NE22 7AA, UK
Telephone: +44 (0) 1670 822181 · Facsimile: +44 (0) 1670 829465 · Email: info@welwyn-tt.com · Website: www.welwyn-tt.com
Issue B · 03.02
205
High Voltage
Planar Resistors
4500 Series
Welwyn Components
Strength
The terminations meet the requirements of
IEC 68.2.21.
Construction
A high quality alumina substrate is printed with a specially
selected high voltage thick film resistor ink based on a
ruthenium oxide/glass system. A choice of protective systems
is available.
Solderability The terminations meet the requirements of
IEC 115-1, Clause 4.17.3.2
Marking
Choice of Protection
Type and protection system references, resistance value
tolerance and manufacturing date code are legend marked.
The resistance value conforms to IEC 62.
As standard components are supplied conformally coated
with an epoxy resin. By special request components can be
supplied unprotected or with a screen printed epoxy
‘handling’ protection.
Solvent Resistance
The body protection and marking are resistant to all normal
industrial cleaning solvents suitable for printed circuits.
Terminations
Material
Solder coated phosphor bronze leadframe.
Resistors can be supplied without leads, in
which case palladium silver pads enable
electrical connection to be made.
Performance Data
Actual
Maximum
Typical
0.3
Load at rated power: 1000 hours at 70°C
Shelf life: 12 months at room temperature
Derating
∆R%
∆R%
<0.1
Zero at 125°C
Temperature rapid change
Resistance to solder heat
Voltage coefficient of
∆R%
∆R%
0.1
0.05
5
4501 and 4502
4503 and 4504
4505, 4506 and 4507
<3
<2
<1
Resistance ppm/volt
3
1.5
Application Notes
Non Standard Optional Features
The terminations should not be bent closer than 1.5mm from
the body, and the recommended minimum bend radius is 1mm.
The options listed below are some of the special features
which may be provided, subject to agreement.
Special substrate size.
Leadless version with palladium silver solder pads.
Special termination length, diameter and pitch.
Special designs for pulse applications.
Resistance value outside stated range.
Tolerance better than 1%
Due to the high voltage which can appear between the resistor
body and any adjacent metal part, resistors should be mounted
at an adequate distance from other conducting parts.
Due to the possibility of surface condensation it is
recommended that high voltages are not applied to resistors
in conditions of high humidity.
Temperature coefficient of 50ppm/°C.
Enquiries Welcomed
Design Flexibility
The experience of Welwyn engineers has been used to design
this generation of high voltage planar resistors to be suitable
for a majority of applications. However, should an application
require particular consideration, Welwyn designers are
available to provide advice and where applicable, to
recommend a non-standard product. Special sizes, designs
etc, can be prototyped at short notice.
Packaging
Packed in foam within a box.
© Welwyn Components Limited Bedlington, Northumberland NE22 7AA, UK
Telephone: +44 (0) 1670 822181 · Facsimile: +44 (0) 1670 829465 · Email: info@welwyn-tt.com · Website: www.welwyn-tt.com
Issue B · 03.02
206
相关型号：
©2020 ICPDF网 联系我们和版权申明