Datasheet

Document Number: 50054 For technical questions, contact: [e-mail]
www.vishay.com
Revision: 27-Oct-10 67
LPS 800
Vishay Sfernice
Power Resistor for Mounting onto a Heatsink
Thick Film Technology
FEATURES
• 800 W at 85 °C bottom case temperature
• Wide resistance range: 0.3 Ω to 900 kΩ
E24 series
• Non inductive
• Easy mounting
• Low thermal radiation of the case
• Compliant to RoHS directive 2002/95/EC
Note
• Tolerances unless stated: ± 0.2 mm
MECHANICAL SPECIFICATIONS
Mechanical Protection Insulated case UL 94 V-0
Resistive Element Thick film
Substrate Alumina
End Connections Screws M4
Tightening Torque
- On Connections 2 Nm
- On Heatsink 2 Nm
Maximum Torque 2.5 Nm
Weight 83 g ± 10 %
ENVIRONMENTAL SPECIFICATIONS
Temperature Range - 55 °C to 175 °C
Climatic Category 55/175/56
DIMENSIONS in millimeters
2 x M4 useful depth: 8
57
34
60
36
2 x Ø 4.2
LPS 800
I5U 5 %
V2
64.7
15.2
21.2
25.2
13.6
Ø 20
25.8 ± 1
ELECTRICAL SPECIFICATIONS
Resistance Range 0.3 Ω to 900 kΩ
Tolerances (Standard) ± 1 % to ± 10 %
Power Rating and
Thermal Resistance
800 W at + 85 °C
bottom case temperature
R
TH (j - c)
: 0.112 °C/W
Temperature Coefficient
R ≤ 1 U: ± 500 ppm/°C
1 U < R ≤ 10 U: ± 300 ppm/°C
10 U < R: ± 150 ppm/°C
- 55 °C/175 °C
IEC 60115-1
Standard
Limiting Element Voltage U
L
5 kV
Dielectric Strength
IEC 60115-1, 1 min,
10 mA max.
7 kV
RMS
or 12 kV
RMS
Insulation Resistance ≥ 10
4
MΩ
Inductance ≤
0.1 µH
Critical Resistance 31.25 kΩ