Fusible Nickel
Film Resistors
FN Series
Welwyn Components
Performance Data
Maximum
Load: 1000 hours at 70°C
Shelf life: 12 months at room temperature
Derating from rated power at 70°C
Long term damp heat
∆R%
∆R%
1
0.5
zero at 155°C
1
∆R%
∆R%
Resistance to solder heat
0.5
Fusing characteristics
See Figure 2
Packaging
Fusing
All FN resistors are supplied tape packed ready for loading on
After fusing the final resistance value will be ≥10 times the
to automatic sequencing and insertion machines.
initial value.
Component wires will not protrude beyond the outside edge
of the tapes.
Standard Quantities Per Package
Type
FN4
Large ammo pack
5000
Alternative packaging available by request.
A detailed Packaging Data Sheet is available upon request.
Lead Formed resistors can also be supplied. Standard options
of Lancet, Radial and Goalpost forming are shown in Lead
Form Information section
5
f1
f2
52
6
6
Body location f1 – f2 ≤ 1.4 mm
© 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
169
TTELEC [ TT Electronics ]
