LPS 300
Vishay Sfernice
Power Resistor for Mounting onto a Heatsink
Thick Film Technology
FEATURES
• 300 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
DIMENSIONS in millimeters
25.8
1
LPS 300
6K8 5 %
V2
25.2
21.2
15.2
60
36
64.7
2 x M4 useful depth: 8
2 x Ø 4.2
Ø 20
13.6
34
57
Note
• Tolerances unless stated: 0.2 mm
MECHANICAL SPECIFICATIONS
ELECTRICAL SPECIFICATIONS
Mechanical Protection
Resistive Element
Substrate
Insulated case UL 94 V-0
Resistance Range
0.3 Ω to 900 kΩ
Thick film
Alumina
Tolerances (Standard)
1 % to 10 %
300 W at + 85 °C
bottom case temperature
End Connections
Tightening Torque
- On Connections
- On Heatsink
Screws M4
Power Rating and
Thermal Resistance
R
TH (j - c): 0.112 °C/W
2 Nm
Temperature Coefficient
- 55 °C/120 °C
R ≤ 1 U: 500 ppm/°C
1 U < R ≤ 10 U: 300 ppm/°C
10 U < R: 150 ppm/°C
2 Nm
Maximum Torque
Weight
2.5 Nm
83 g 10 %
Standard
IEC 60115-1
Limiting Element Voltage UL
5 kV
ENVIRONMENTAL SPECIFICATIONS
Dielectric Strength
IEC 60115-1, 1 min,
10 mA max.
7 kVRMS or 12 kVRMS
Temperature Range
Climatic Category
- 55 °C to 120 °C
55/120/56
Insulation Resistance
Inductance
≥ 104 MΩ
≤ 0.1 µH
83.33 kΩ
Critical Resistance
Document Number: 50052
Revision: 09-Jun-10
For technical questions, contact: sfer@vishay.com
www.vishay.com
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