HEAT SINK ALUMINIUM HOUSING

SAH Series

  • High power rating
  • Complete welded construction thermal to thermal
  • Standard winding & Non- Inductive winding types
  • Housing deep fined for maximum heat dissipation at natural or forced air convection
  • Values from R005 to 100K

Specifications

Part Number Resistance Range (Ώ) Max WorkingVoltage (V) Max Weight (g)
Inductive Non Inductive (NI) Inductive Non Inductive (NI)
SAH 5W 0.005 ~ 3K 0.1 ~ 1K 120 70 3
SAH 10W 0.02 ~ 6K 0.03 ~ 2.3K 245 180 7
SAH 25W 0.012 ~ 15K 0.02 ~ 5.5K 500 300 15
SAH 50W 0.01 ~ 40K 0.12 ~ 25K 1300 600 33
SAH 100W 0.4~ 50K 0.02 ~ 12K 1900 1340 450
SAH 250W 0.6~ 100K 0.15 ~ 40K 2500 1750 800

Construction

Cap and lead assemblies are fitted to a high purity ceramic substrate. The resistive element is wound onto the substrate and welded to the caps. The wound rod is then moulded and fitted into an aluminium housing to give optimum stability and reliability.

Marking

The resistors are legend marked with type reference, resistance value and tolerance which will withstand all accepted industrial cleaning fluids.

Material

  • Core: High Grade Steatite Ceramic
  • End Caps: Stainless Steel
  • Resistive Element: Copper-nickel alloy or nickel-chrome alloy of determined temperature coefficient.
  • Primary Insulation: Epoxy Moulding
  • Nosecone: Epoxy Moulding
  • Housing: Aluminum with hard anodic coating
SAH TYPE   

General specifications

  • Wattage Ranging from 5 to 300W
  • Ohmic values - From R005 to 100K depending on wattage size
  • Resistance tolerance - standard ±5% (J) and ±10% (K). Also available ±1%, ±, 2% and ±3%
  • Temperature coefficients: - Typical values < 1K 100ppm Std. > 1K 25 ppm Std.
  • Insulation resistance - 10,000 MΩ minimum
  • Overload 5 sec. At 5 times rated power.
  • High Ambient Power dissipation - Dissipation derates linearly to zero at 250°C from 25°C
  • Dieletric Strength- 1000 VAC for 5 to 10W, 2000 VAC for 25 to 50W, 3500 VAC for 100-250W

Ambient Temperature Derating

Derating is required for ambient temperatures above 25,see the following graph: Curves A.B.C apply to operation of unmounted resistors. Curves D applies to all types when mounted to specified heat ink. A:5Wand 10W unmounted

Resistors

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