HIGH ENERGY SLAB RESISTORS

Slab Ceramic Resistors

Non-inductive, high power slab resistors are available in a few different materials:

Type 500BA slab resistor for high resistance applications

Type 500SP slab resistors for high power applications

Type 500AS slab resistors for high voltage, high energy and high resistance pulse applications

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Electrical Specifications
Dimensions
Additional Info

Type 500SP high power slab resistors

Type Length,
inch (mm)
Resistance range,
Ohms
Average power
at 40°C
(104°F)
Amb., Watts
Peak energy at40°C
(104°F)
Amb., Joules
Peak voltage,
Volts
Resistor weight,
Grams
ELECTRICAL SPECIFICATIONS
502SP 2 (51) 0.2-110 30 150 900 15
503SP 3 (76) 0.3-190 45 290 1900 22.5
504SP 4 (102) 0.4-280 60 480 2800 30
506SP 6 (152) 0.8-450 90 800 4700 45
508SP 8 (203) 1.0-630 120 1100 6700 60
510SP 10 (254) 1.3-800 150 1400 8500 75

Type 500AS high voltage and high energy slab resistors

Type Length,
inch (mm)
Resistance range,
Ohms
Average power
at 40°C
(104°F)
Amb. (Watts)
Peak energy
at 40°C
(104°F)
Amb., Joules
Peak voltage,
Volts
Resistor weight,
Grams
ELECTRICAL SPECIFICATIONS
502AS 2 (51) 5-1200 12 1500 8500 16
503AS 3 (76) 9-2200 18 2700 16000 24
504AS 4 (102) 13-3200 24 4000 23000 32
505AS 5 (127) 17-4200 30 5200 30000 40
506AS 6 (152) 21-5200 36 6400 36000 48
507AS 7 (178) 25-6200 42 7700 43000 56
508AS 8 (203) 29-7200 48 8900 50000 64
509AS 9 (229) 33-8200 54 10100 57000 72
510AS 10 (254) 37-9200 60 11400 65000 80

Type 500BA high resistance slab resistors

Type Length,
inch (mm)
Resistance range,
Ohms
Average power
at 40°C
(104°F)
Amb. (Watts)
Peak energy
at 40°C
(104°F)
Amb., Joules
Peak voltage,
Volts
Resistor weight,
Grams
ELECTRICAL SPECIFICATIONS
502BA 2 (51) 1200-110000 10 700 3000 16
503BA 3 (76) 2200-210000 14 1200 5400 24
504BA 4 (102) 3200-300000 20 1800 8000 32
506BA 6 (152) 5200-490000 30 2900 13000 48
508BA 8 (203) 7200-680000 38 4100 18000 64
510BA 10 (254) 9200-870000 48 5200 22000 80

Standard products

Without Tabs Straight Radial Tabs With Right Angle Radial Tabs
With Right Angle Radial Tabs With Low Profile Axis Tabs With Standoff Axial Tabs

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. Typical applications for 500SP slab resistors are:

  • Motor drive control resistors
  • Power supply resistors
  • Power generation/conditioning equipment resistors
  • Power converter resistors
  • Inverter resistors
  • In-rush current limit resistors
  • Soft start resistors
  • Dynamic braking resistors
  • RC snubber resistors
  • RF dummy load resistors
  • Capacitor charge/discharge resistors

 

PRODUCT CHARACTERISTICS
Operating temperature -55°C to +350°C (-67 to 662°F)
Temperature coefficient + 0.2 to - 0.08 %/°C
Short time overload 1) ±2%
Load life 2) ±5%
Thermal shock 3) ±3%
Moisture resistance 4) ±5%

Note: When required, type SP material can withstand short periods of use at red-heat conditions, i.e. up to 550-600°C (1031-1112°F)
1) Max. % change after 5 cycles - 10 times rated power, 5 seconds on, 90 seconds off
2) Max. % change after 1000 hrs. rated power 1-1/2 hours on; 1/2 hour off
3) Max. % change after 10 cycles -55 to +125°C (-67 to 257°F)
4)Max. % change when tested per MIL-STD-202, Method 103

PHYSICAL PROPERTIES (NOMINAL)
Density 2.2-2.4 gm/cc
Specific heat 0.24-0.26 cal/gm °C
Thermal conductivity 0.14-0.16 cal/cm/°C/sec

Power rating curves

Power Rating Curves

Resistor surface temperature rise versus power


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

 


TYPE AS/BA Product Characteristics & Physical Properties

PRODUCT CHARACTERISTICS
Operating temperature -55°C to +230°C (-67 to 446°F)
Temperature coefficient + 0.0 to -0.08 %/°C
Short time overload 1) ±2%
Load life 2) ±5%
Thermal shock 3) ±3%
Moisture resistance 4) ±5%

Note: When required, type SP material can withstand short periods of use at red-heat conditions, i.e. up to 550-600°C (1031-1112°F)
1) Max. % change after 5 cycles - 10 times rated power, 5 seconds on, 90 seconds off
2) Max. % change after 1000 hrs. rated power 1-1/2 hours on; 1/2 hour off
3) Max. % change after 10 cycles -55 to +125°C (-67 to 257°F)
4)Max. % change when tested per MIL-STD-202, Method 103

PHYSICAL PROPERTIES (NOMINAL)
Density 2.2-2.4 gm/cc
Specific heat 0.22-0.24 cal/gm °C
Thermal conductivity 0.003-0.006 cal/cm/°C/sec

Power rating curves

Power rating curves

Resistor surface temperature rise versus power

Temperature rise