High Voltage Ceramic Slab Resistors

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.

Features:

  • 15 watts per inch of length power dissipation (type SP)
  • Excellent pulse/overload capability
  • Slim profile for excellent volumetric power efficiency

Type 500AS

TypeLength (mm)Resistance range (Ohm)Average power at 40°C Amb. (W)Peak energy at 40°C Amb. (J)Peak voltage (V)
502AS515-12001215008500
503AS76 9-220018270016000
504AS10213-320024400023000
505AS12717-420030520030000
506AS15221-520036640036000
507AS17825-620042770043000
508AS20329-720048890050000
509AS22933-8200541010057000
510AS25437-9200601140065000

Type 500BA

TypeLength (mm)Resistance range (Ohm)Average power at 40°C Amb. (W)Peak energy at 40°C Amb. (J)Peak voltage (V)
502BA511200-110000107003000
503BA762200-2100001412005400
504BA1023200-3000002018008000
506BA1525200-49000030290013000
508BA2037200-68000038410018000
510BA2549200-87000048520022000

Type 500SP

TypeLength (mm)Resistance range (Ohm)Average power at 40°C Amb. (W)Peak energy at 40°C Amb. (J)Peak voltage (V)
502SP510.2-11030150900
503SP760.3-190452901900
504SP1020.4-280604802800
506SP1520.8-450908004700
508SP2031.0-63012011006700
510SP2541.3-80015014008500
Slab Resistors

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 formulatedto 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, Voltage Divider
  • Pre-charge / Inrush Limit
  • Filter, Snubber, Crowbar, Measuring
  • EMI / EFI Test Circuits, Test Loads

Type SP
The type 500SP series slab resistor design enables the designer to minimize resistor package size and cost while providing unequalled high power performance and reliability. 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 control resistors
  • Power supply resistors, Inverter resistors
  • Power generation/conditioning equipment resistors
  • Power converter resistors
  • Capacitor charge/discharge resistors
  • In-rush current limit resistors
  • Soft start resistor, RC snubber resistors
  • Dynamic braking resistors
  • RF dummy load resistors