Type SBC (Square
This range of Power Wirewound
Resistors are wound on continuous
glass fibre elements or have a ceramic
core depending on resistance value.
The element is housed in a ceramic
case and sealed with an inorganic
silica filler. Their construction gives a
resistor with high insulation resistance
and low surface temperature, capable
of withstanding high overload currents.
These resistors are ideally suited to a
variety of applications within industrial
and commercial environments, where
performance and reliability are of prime
importance. Applications include fan
force ovens, cooker hoods, power sup-
plies and triac based speed controls.
Custom Design Variants in value and
style are welcomed.
Literature No. 1773278
Up to 17 Watts
Vertical or Axial
Widely Available from
Dimensions are shown for
reference purposes only.
Environmental and Mechanical
High Power Resistor
Type SBC (Square Ceramic) Series
Type SBC - SBCH (Axial Power Resistor)
We offer three ceramic profiles for the main wattage sizes.
These are for additional heat dissipation and vertical mounting of resistors.
The suffix for each style is as follows:-
Type SBCHE (For Vertical Mounting)
We offer SBCHE Styles with one lengthened lead for vertical mounting. See additional hardware on last page.
One Lead Length 20mm longer than case length. Supplied with one longer lead wrapped back in flute in ceramic.
Maximum Continuous Voltage:
Temperature Coefficient of Resistance:
Resistance to Solder Heat:
Voltage Coefficient of Resistance:
Operating Temperature Range:
Long Term Damp Heat:
Power in Watts
Dimensions are in
run 15°C hotter than
NB - SBC Series will
Series E24 5% E12 10% (see tables for value
limits per style)
√P x R
ΔR <±3% 1000 hours at 70°C
See Surface Temperature Curve (below)
200ppm/°C (400ppm/°C below 18R)
ΔR < 0.2% (350°C for 2.5 seconds)
-55°C to +350°C
ΔR < 5% (full load at 70°C for 1000 hours)
ΔR < 0.2% (21 days at 40°C for 93% humidity)
ΔR < 1.0% (per 12 months)
Steel - Solder coat
Legend mark, Manufacturer name, type, ohmic value
Specifications subject to