4530 Datasheet, PDF (2/2 Pages) Welwyn Components Limited – High Voltage Planar Dividers

High Voltage Planar Dividers
High Voltage
P₄₅l₃a₀n_Sea_rir_esDividers
4530 Series
Welwyn Components
Construction
A high quality alumina substrate is printed with a specially
selected high voltage resistor ink based on a ruthenium
oxide/glass system. A choice of protective systems is available.
Choice of Protection
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.
Terminations
Material
Solder-coated phosphor bronze lead-frame or
0.8mm dia, copper wire leads.
Solderability Meets the requirements of IEC 115-1, Clause
4.17.3.2.
Performance Data
Marking
Legend marked with type reference, resistance value,
tolerance ratio and manufacturing date code.
5th digit:
1 refers to leadframe
2 refers to copper wire lead
6th digit:
2 refers to conformal coating
3 refers to screen printed protection
4 refers to unprotected components
Solvent Resistance
The marking and protection will withstand all commonly used
industrial cleaning solvents.
Load: 1000 hours at 70°C
Derating from rated power at 70°C
Shelf life: 12 months at room temperature
Temperature rapid change
Resistance to solder heat
Voltage coefficient of resistance ppm/volt
∆R%
∆R%
∆R%
∆R%
4531, 4532
4533, 4534
4535, 4536, 4537
Maximum
5
0.3
0.1
0.05
5
3
1.5
Zero at 125°C
Typical
0.3
< 0.1
0.02
0.02
<3
<2
<1
Application Notes
The terminations should not be bent closer than 1.5mm from
the body, and the recommended minimum bend radius is 1mm.
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.
Temperature Category
Lower temperature category is -55°C, upper temperature
category is 125°C. Due to the possibility of surface
condensation it is recommended that high voltage is not
applied to resistors in conditions of high humidity.
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.
Non Standard Optional Features
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.
Multiple dividers R1, R2, R3 etc.
Packaging
Packed in foam within a box.
Ordering Procedure
Example: 4533 with leadframe terminals and conformal coat
at R₁ =99.9 megohms and R₂ = 100 kilohms (total R₁ +R₂ = 100M)
at 5% absolute tolerance and 1% ratio tolerance -
Type
4533 1 2 - 100M / 100K J F
Terminal
1 Leadframe
2 Copper wire
Protection
2 Conformal coating
3 Screen printed protection
4 Unprotected
Total (R₁ + R₂) Value (use IEC62 code)
Lower (R₂ ) Value (use IEC62 code)
R₁ + R₂ Absolute Tolerance (use IEC62 code)
F 1%
G 2%
J 5%
Ratio Tolerance (use IEC62 code)
F 1%
G 2%
J 5%
© Welwyn Components Limited Bedlington, Northumberland NE22 7AA, UK
Telephone: [phone] · Facsimile: [phone] · Email: [e-mail] · Website: www.welwyn-tt.com
General Note
BI Technologies
TT Electronics reserves the right to make changes in product specification without notice or liability.
Issue C · 10.07
IRC Welwyn
All information is subject to TT Electronics’ own data and is considered accurate at time of going to print.
www.ttelectronicsresistors.com
© TT Electronics plc
07.16