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LPS 300
www.vishay.com
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 k Ω
E24 series
? Non inductive
? Easy mounting
? Low thermal radiation of the case
? Material categorization: For definitions of compliance
please see www.vishay.com/doc?99912
DIMENSIONS in millimeters
25.8 ± 1
60
36
LPS 300
6K8 5 %
V2
64.7
25.2
21.2
15.2
± 0.5
2 x ? 4.2
2 x M4 useful depth: 8
? 20
13.6
34
57
Note
? Tolerances unless stated: ± 0.2 mm
STANDARD ELECTRICAL SPECIFICATIONS
MODEL
LPS 300
RESISTANCE
RANGE
Ω
0.3 to 900K
RATED POWER
P 85 °C
W
300
LIMITING ELEMENT
VOLTAGE U L
V
5K
TOLERANCE
±%
1, 2, 5, 10
TEMPERATURE
COEFFICIENT
± ppm/°C
150, 300, 500
CRITICAL
RESISTANCE
( Ω )
83.33K
MECHANICAL SPECIFICATIONS
TECHNICAL SPECIFICATIONS
Mechanical Protection
Resistive Element
Substrate
End Connections
Tightening Torque
Connections
Tightening Torque Heatsink
Maximum Torque
Weight
Insulated case UL 94 V-0
Thick film
Alumina
Screws M4
2 Nm
2 Nm
2.5 Nm
83 g ± 10 %
Power Rating and
Thermal Resistance
Temperature Coefficient
- 55 °C/120 °C
Standard
IEC 60115-1
Dielectric Strength
IEC 60115-1, 1 min,
10 mA max.
Lightning test 1.2/50 μs
IEC 61000-4-5
Insulation Resistance
300 W at + 85 °C
bottom case temperature
R TH (j - c) : 0.112 °C/W
R ≤ 1 Ω : ± 500 ppm/°C
1 Ω < R ≤ 10 Ω : ± 300 ppm/°C
10 Ω < R : ± 150 ppm/°C
7 kV RMS or 12 kV RMS
Until 12 kV
≥ 10 4 M Ω
ENVIRONMENTAL SPECIFICATIONS
Temperature Range - 55 °C to 120 °C
Climatic Category 55/120/56
Revision: 24-Oct-13
1
Inductance
Partial Discharge
(for LPS 300 D only)
≤ 0.1 μH
≤ 100 pC/7 kV
≤ 10 pC/5 kV
Other cases: Consult us
Document Number: 50052
For technical questions, contact: sferfixedresistors@vishay.com
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000
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