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/li>
- Slim profile for excellent volumetric power efficiency
- Resistance range from 0.2 to 870K (resistance range dependent on material type)
- Resistance tolerances 10 and 20% standard on individual components, available to ±2% on assemblies/li>
500 Series Non-Inductive Bulk Ceramic Slab Resistors provide high power and energy dissipation in a compact size. The 500 Series design enables the designer to minimize resistor package size and cost while providing unequaled performance and reliability. The slim, compact resistors offer a number of termination options allowing easy configuration for specific requirements. Ohmite 500 Series non-inductive bulk ceramic slab resistors provide 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 resistor body. Consult factory for other materials.
Material Types
TYPE SP
Material composition type SP is
formulated to provide lower resistance values and higher derating
temperatures.The higher derating temperatures translates to a
higher wattage per inch than other
material types.
Applications
- Motor drive circuits
- Power Supplies
- Power Conditioning Equipment
- Soft Start/Current Limit Circuits
- Dynamic braking
- Snubber Circuits
- RF Dummy Load Circuits
- Capacitor Dump Circuits
TYPE AS
Material composition type
AS is formulated to provide
high voltage and high energy
absorption in a singular package.
Applications
- High voltage power supplies
- Capacitor charge/discharge
- Pulse test equipment
- Radar/broadcast transmitters
- Laser/Imaging equipment
TYPE BA
Material composition type BA is formulated 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.
Applications
- DC Coupling and Filter Cap Discharge
- Voltage Balancing
- Pre-charge / Inrush Limit
- Voltage Divider
- Filter
- Snubber
- Crowbar
- Measuring
- EMI / EFI Test Circuits
- Test Loads
Packaged assemblies
Individual standard components can be packaged in series, parallel, or series/parallel arrays to optimize energy and power dissipation in available space. Custom assembly packages are available.
*Based on energy absorption in less than 10 milliseconds. Type SP energy rating can be substantially greater for longer pulses. Allowable peak energy/voltage will depend on the resistance value.
Specifications
Characteristics
Derating
Surface Temperature Rise
Dimensions
Without Tabs
With Straight Radial Tabs (G1)
With Right Angle Radial Tabs – same direction – (G2)
With Right Angle Radial Tabs – opposite direction – (G3)
With Low Profile Axial Tabs (H1)
With Standoff Axial Tabs (H2)
