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Aluminium Housed Wirewound Power Resistor HSM
 
 

HSMType HSM

A modular Heat Sink Resistor containing 4 individual resistors

For compact construction:

Close mounting of heat sensitive components is possible due to only a slight rise of the temperature on the aluminium profile.

Solder, Cable and "Fast-On" Termination

More resistors in one profile possible.


HSM 210, HSM 40
 
  Mechanical Specifications  
 
HSM TYPE
A
B
40
40
18.3
70
70
39.7
140
140
80
210
210
2x80
280
280
2x100
Click to enlarge picture
 
  Power Dissipation  



This graph shows the maximum wattage rating for each of the five possible ressistors of standard size corresponding to the heat sin temperature.
It is assumed that all resistors are equally loaded.
Please consult us about non-standard lengths and resistor modules.
 
  Thermal Resistances:  
 
RTH1
RTH2
RTH3
RTH4
HSM 40
4
20
0.2
0.3
HSM 70
2
10
0.1
0.22
HSM 140
1
5.75
0.05
0.13
HSM 210
0.75
4.2
0.03
0.08
HSM 280
0.5
3
0.02
0.055
RTH1
 Wire to Alu-house
RTH2
 Alu-house to air per resistor
RTH3
 Alu-house to heat sink per resistor
RTH4
 Resistor surface to heat sink per resistor

Showing the Thermal Resistance (°C / W) between different measuring points.










Showing the Thermal Resistance (°C / W)
between different measuring points.

 
  Designing:  
 
The following equations are applied by the dimensioning of the resistors at stationary load. If more information is required please consult Danotherm.

It's assumed that the air around the resistors is stationary. (Worst case).
Following conditions are possible:
WMAX : Maximum reguired load in resistor
TMAX : Maximum hot spot temperature reguested in resistor (TMAX < 220°C) The lower TMAX the higher reliability and lifetime.
TAMB : Ambient temperature
RTH : Thermal resistance. Refer to table Thermal resistances
TH : Heat sink temperature (chassis).
T : Temperature on top of the Aluminium profile.
 
  Insulation
Silecone Rubber + MICA. The Silicone is UL-recognised (UL 94 HB) to a working temperature of 220°C.
Temperatures of up to 300°C can be endured for shorter periods. This may however cause an expansion of the silicone rubber with a possibility of reducing the dielectric strength
 
 
Specification HSF
   
 
Power rating
4x12W - 4x300W
Resistance range (standard)*
E 12 values prefered for smaller quantities		 HSM 40
HSM 70
HSM 140
HSM 210
HSM 280 		R1 - 3K3
R22-6K8
R47-18K
R82-27K
1R - 39K
Resistance tolerance
±5%/ ±10%
Temperature Coefficients:
Normal 50 ppm - 150 ppm
Low ohmic values 400 ppm
Dielectric strength 2500 VAC peak
Working voltage 1200 VAC
Test voltage 6000 VAC
* Low-ohmic values on request
   
 
More Heat sink
   
 
Heat Sink Resistors
HSD All-purpose Heat Sink Resistor
HSH Large surface Aluminium housed resistor








   
 
Download Datasheet PDF
    
 
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DANOTHERM ELECTRIC A/S
  
 
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