Aluminium Housed Chassis Mounted Wire Wound Resistors

A resistor encased in an aluminium housing normally having a flat base for mounting.

Aluminium encased resistors are wound with Copper Nickel or Nickel Chromium wire, on a ceramic core fitted with end caps, to obtain required resistance.

The winded assembly is then encapsulated in a anodized heat sink using high temperature moulding compound.
   
  Our high power wire wound resistors exhibit high performance life and are extensively used across industry. These resistors comply to international quality & safety standards.
A wide range of Resistance available in 5w to 300 w.
Small dimension & excellent heat transfer.
Good Electrical Stability, Reliability & Mechanically strength.
Values from E01 to 100 k.
Non inductive version available.
Customized termination, mounting arrangements available on request.
Higher wattage resistors for special applications can be made.
 

Range : 0.1 ohms - 100 K ohms
Power : 5W - 300 W
Tolerance : +0.25% to + 5%

 
SPECIFICATIONS:
Characteristics
Condition
Complience

Standard Tolerance

Temperature co-efficient

Insulation Resistence Change in Resistance at -short time overload -Shelf Life Incombustiblity Operating Temperature

For values less than 1ohm
For values above 1ohm
For values less than 10ohm
For values above 10ohm
Dry/Normal

10*rated voltage for 5 secs
After 3 years
16*rated wattage for 5 secs.
From-25'C to 250'C

+-5%
+-0.25% to +-5%
60 PPM/'C
30 PPM/'C
10G ohm min

+-0.5%
<+-1%
No Flame
 

 

ELECTRICAL SPECIFICATIONS
Type Power Rating on Std. Heat Sink @25 C Power Rating With No Heat Sink @25 C Resistance Range Limiting Element Voltage(DC/AC rms) Dielectric Strength(AC Pk) Weight Approax.(gms.) Standard Area Heat Sink Thickness (mm)
SEI-5
10
5
E01-10K
160
1400
5
400
1
SEI-10
15
8
E01-15K
260
1400
7
400
1
SEI-25
25
12.5
E01-35K
550
2500
15
550
1
SEI-50
50
20
E01-100K
1250
2500
30
550
1
SEI-75
75
45
E01-50K
1400
5000
85
1000
3
SEI-100
100
50
E01-100K
1900
5000
115
1000
3
SEI-150
150
55
E01-100K
2500
5000
175
1000
3
SEI-200
200
50
E01-50K
1900
5000
475
3750
3
SEI-250
250
60
E01-65K
2200
5000
600
4800
3
SEI-300
300
75
E01-80K
2500
5000
700
5800
3


 
MECHANICAL SPECIFICATIONS

 

Type
L-max
A max
H max
ZX+-0.3
ZY+-0.3
M+-0.3
B max
C max
D max
SEI-5
17.5
29
17
11.3
12.4
2.4
4.5
9
2.5
SEI-10
21
37
21
14.3
15.9
2.4
5.5
11
3.2
SEI-25
30
52
28
18.3
19.8
3.2
7.3
15
3.2
SEI-50
50
73
30
39.7
21.4
3.2
7.3
15
3.2
SEI-75
50
71
48
29
37
4.4
11.8
26
3.5
SEI-100
66
90
48
35
37
4.4
11.8
26
3.5
SEI-150
98
125
48
58
37
4.4
11.8
26
3.5
SEI-200
90
145
73
35
57.2
5.3
20.5
45
6.75
SEI-250
110
165
73
44.5
57.2
5.3
20.5
45
6.75
SEI-300
130
180
73
52
57.2
6.6
20.5
45
6.75

 

  
2015 Stead Electronic Industries.
Website by RPXL