Datasheet

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500 Series
Non-inductive Bulk Ceramic Slab Resistors
FEATURES
• Inherently non-inductive, high reliability due to bulk
ceramic construction
• 15 watts per inch of length power dissipation (type SP)
• Excellent pulse/overload capability
• Slim profile for excellent volumetric power efficiency
• Resistance range from 0.2 to 870K (resistance range
dependent on material type)
• Resistance tolerances 5, 10, 20% standard on individual
components, available to ±2% on assemblies
500 Series Non-Inductive Bulk Ceramic Slab
Resistors provide high power and energy dis-
sipation in a compact size. The 500 Series
design enables the designer to minimize
resistor package size and cost while provid-
ing unequaled performance and reliability. The
slim, compact resistors offer a number of ter-
mination options allowing easy configuration
for specific requirements. Ohmite 500 Series
non-inductive bulk ceramic slab resistors pro-
vide excellent performance where high peak
power or high-energy pulses must be handled
in a small size. The advantage of the bulk
construction is that it produces an inherently
non-inductive resistor; and it allows energy and
power to be uniformly distributed through the
entire ceramic resistor body – there is no film
or wire to fail. We offer a full line of rugged,
reliable ceramic resistors – including custom
designs. Standard terminal mounting tabs are
tin plated steel which are soldered to the resis-
tor body. Consult factory for other materials.
Material composition type SP is
formulated to provide lower resis-
tance values and higher derating
temperatures.The higher derat-
ing temperatures translates to a
higher wattage per inch than other
material types.
Appplications
• Motor Drive Controls
• Power Supplies
• Power Conditioning Equipment
• Soft Start/Current Limit Circuits
• Dynamic Braking
• Snubber Circuits
• RF Dummy Load Circuits
• Capacitor Dump Circuits
Material composition type
AS is formulated to provide
high voltage and high energy
absorption in a singular pack-
age.
Appplications
• High voltage power supplies
• Capacitor charge/discharge
• Pulse test equipment
• Radar/broadcast transmit-
ters
• Laser/imaging equipment
Material composition type BA is for-
mulated to withstand high energy and
high voltage applications where the
required resistance value is above the
resistance values available in Type
SP and Type AS resistors. Maximum
continuous operating temperature is
specified at 230°C.
Appplications
• DC Coupling and Filter Cap Discharge
• Voltage Balancing
• Pre-charge / Inrush Limit
• Voltage Divider
• Filter
• Snubber
• Crowbar
• Measuring
• EMI / EFI Test Circuits
• Test Loads
TYPE SP
MATERIAL TYPES
TYPE AS TYPE BA