Aluminum Housed Axial Flat Lead Wire Wound Resistor

The power that the resistor can dissipate depends on the operating temperature

DERATING

Electrical Characteristics

SAA: These resistors consist of a resistance element wounded on the special grade ceramic rod and embedded into an aluminum case. The wire used is of low temperature co-efficient. The wire ends are spot welded to the end caps. This gives reliable contacts over long period of use. The aluminum casing made from high quality heat sink grade helps to dissipate the heat from the resistor at the faster rate and has a low change of resistance with respect to temperature, with resistance varying in direct proportion. This type of wire wound resistor is manufactured such that the aluminum enclosure is filled with special non-flammable silicon base cement paste.

Construction

 Standard terminations:

                        Dimensions unless specified in mm

5

6.5

56

76

54

263

200

63.5

180

500

5

6.5

56

76

54

178

115

63.5

98.5

250

5

5

45

72

46

139

89

57

70

150

4.4

3.5

26

48

27

83

65.5

37

35

100

4.4

3.5

26

48

27

71

49

37

29

75

3.18

2.25

15.5

29

16

72

50

21.4

39.8

50

3.18

2.25

14

27.5

14

50

27

19.8

18.3

25

2.4

2

10

21

11

35

19

15.9

14.3

10

L

H

G

F

E

D

C

B

A

POWER (Watt) Mechanical Data:   wattage rating 30min., -55 C, 15-30minutes Thermal Shock Wattage rating 1.5h. ON, 30min. OFF, 1000 hours Load Life 2 X wattage rating - 5sec Short Time Overload 5000VAC (Optional) 2500VAC (Optional) 1500VAC peak ; AC; Max. leakage current : 2mA Dielectric Strength Min. 10 G ohms Insulation Resistance -55C to 250C Temperature Range Ceramic steatite Core Material Anodized Aluminum Housing Copper-nickel alloy, or nickel chrome alloy Resistant Element 0.05 E - 100 KE Resistance Range E24 Series Resistance Series Power Ratings ? 1%, ?2%, ?5%. Tolerances Conditions Test General Specifications: Non inductive and special terminations available   Non-standard ohmic values available. High level voltage protection Terminations are silver plated Designed with serrations on Aluminum housing for proper thermal conductivity Anodized aluminum housing ensures good humidity seal Low temperature coefficient over entire range Exceptional stability and reliability against severity of damp heat conditions and other environmental abuses. Elegant look over whole range. Low surface temperature High Power to size ratio Features: