
Flameproof Power
Oxide Resistors
FA80 Series
Rugged metal oxide film
Flameproof protection
Low operating temperature
FA84
Power rating at 70°C
watts
2.0
Resistance range
ohms
16R - 100K
Limiting element voltage
volts
350
TCR
ppm/°C
500
Resistance tolerance
%
5, 10
Values
E24 preferred
Thermal impendance
°C/Watt
90
Ambient temperature range
°C
-55 to 155
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.
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
Electrical Data
Issue B · 03.02
A subsidiary of
TT electronics plc
Welwyn Components
151
Marking
Resistors are colour coded with 4 bands.
IEC 62 colours are used.
Solvent Resistance
The body protection and marking are resistant to all normal
industrial cleaning solvents suitable for printed circuits.
Flammability
The resistors will not burn or emit incandescent particles
under any condition of applied temperature or power
overload.
Construction
The resistance element is deposited on a high purity ceramic
rod. End caps are force fitted and termination wires welded to
the caps. The element is adjusted to the required resistance
value by a helical cut; finally the cement protection is applied
to the resistor body before marking with indelible ink.
Terminations
Material
Solder-coated copper wire.
Strength
The terminations meet the requirements of
IEC 68.2.21
Solderability
The terminations meet the requirements of
IEC 115-1, Clause 4.17.3.2
Dimensions (mm) & Weight (g)
PCB
Min.
bend
radius
mounting
centres
Type
L Max
D Max
f min
d nom
Wt.nom
FA84
14.5
5.1
23.6
0.8
20.3
1.2
1.1
Physical Data
L
D
f
d