LPS 300
Vishay Sfernice
www.vishay.com
Power Resistor for Mounting onto a Heatsink
Thick Film Technology
FEATURES
• Compliant with requirement #26 of
NF-EN45545-2
• High power 300 W at 85 °C bottom case
temperature
• Wide resistance range: 0.3 Ω to 900 kΩ
E24 series
• Non inductive
• Easy mounting
LINKS TO ADDITIONAL RESOURCES
• Low thermal radiation of the case
• Material categorization: for definitions of compliance
please see www.vishay.com/doc?99912
3
D
3D Models
DIMENSIONS in millimeters
25.8
1
LPS 300
6K8 5 %
V2
25.2
21.2
15.2
0.5
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
•
STANDARD ELECTRICAL SPECIFICATIONS
RESISTANCE
RANGE
Ω
RATED POWER
LIMITING ELEMENT
TEMPERATURE
COEFFICIENT
ꢁꢁmꢂ°C
CRITICAL
RESISTANCE
(Ω)
TOLERANCE
ꢀ
MODEL
P85 °C
VOLTAGE UL
V
W
LPS 300
0.3 to 900K
300
5K
1, 2, 5, 10
150, 300, 500
83.33K
MECHANICAL SPECIFICATIONS
TECHNICAL SPECIFICATIONS
300 W at + 85 °C
Flammability
Insulated case UL 94 V-0
Power Rating and
Thermal Resistance
bottom case temperature
Resistive Element
Substrate
Thick film
Alumina
R
TH (j - c): 0.112 °C/W
Temꢁerature Coefficient
-55 °C ꢂ 120 °C
R ≤ 1 Ω: 500 ppm/°C
1 Ω < R ≤ 10 Ω: 300 ppm/°C
10 Ω < R: 150 ppm/°C
End Connections
Screws M4
Standard
IEC 60115-1
Tightening Torque
Connections
2 Nm
Dielectric Strength
IEC 60115-1, 1 min,
10 mA max.
7 kVRMS or 12 kVRMS
Tightening Torque Heatsink
Maximum Torque
Weight
2 Nm
2.5 Nm
Lightning test 1.2ꢂ50 μs
IEC 61000-4-5
Insulation Resistance
Inductance
Until 12 kV
83 g 10 ꢀ
≥ 104 MΩ
≤ 0.1 μH
ENVIRONMENTAL SPECIFICATIONS
≤ 100 pC/7 kV
Temꢁerature Range
-55 °C to 120 °C
Partial Discharge
(for LPS 300 D only)
≤ 10 pC/5 kV
Climatic Category
55/120/56
Other cases: Consult us
Revision: 13-Apr-2021
Document Number: 50052
1
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