LTO050FR4700JTE3 Vishay, LTO050FR4700JTE3 Datasheet - Page 2

• Manufacturer Part Number: LTO050FR4700JTE3
• Description: RES .47 OHM 50W 5% TO-220
• Manufacturer: Vishay
• Series: LTO 50r

Specifications of LTO050FR4700JTE3

• Resistance: 0.47 Ohms
• Power Rating: 50 Watts
• Voltage Rating: 250 Volts
• Temperature Coefficient: ±250ppm/°C
• Resistance (ohms): 0.47
• Power (watts): 50W
• Composition: Thick Film
• Features: Non-Inductive
• Tolerance: ±5%
• Size / Dimension: 0.409" L x 0.126" W (10.40mm x 3.20mm)
• Height: 0.638" (16.20mm)
• Lead Style: Through Hole
• Package / Case: TO-220-2
• Resistance In Ohms: 0.47
• Case: TO-220
• Termination Style: Radial
• Operating Temperature Range: - 55 C to + 150 C
• Dimensions: 10.4 mm W x 28.9 mm L x 3.2 mm H
• Lead Spacing: 5.08 mm
• Resistance Tolerance: ± 5%
• Resistor Element Material: Thick Film
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant
• Other names: LT50J-.47

www.vishay.com
78
LTO 50
Vishay Sfernice
CHOICE OF THE HEATSINK
The user must choose according to the working conditions of the component (power, room temperature).
Maximum working temperature must not exceed 150 °C. The dissipated power is simply calculated by the following ratio:
Example:
R
Thermal resistance R
Considering equation (1) we have:
with a thermal grease R
Resistance Values
Tolerances
Typical Temperature Coefficient
(- 55 ° to + 155 °C)
TH (c - a)
PERFORMANCE
TESTS
Momentary Overload
Rapid Temperature Change
Load Life
Humidity (Steady State)
Vibration
Terminal Strength
Shock
SPECIAL FEATURES
P:
T:
R
R
TH (j - c)
TH (c - a)
for LTO 50 power rating 10 W at ambient temperature + 25 °C
T = 150 °C - 25 °C = 125 °C
R
R
:
:
TH (j - c)
TH (c - a)
Expressed in W
Difference between maximum working temperature and room temperature
Thermal resistance value measured between resistive layer and outer side of the resistor. It is the thermal
resistance of the component.
Thermal resistance value measured between outer side of the resistor and room temperature. It is the thermal
resistance of the heatsink itself (type, shape) and the quality of the fastening device, and the thermal resistance
of the thermal compound.
TH (j - c)
+ R
= 12.5 °C/W - 2.5 °C/W = 10 °C/W
TH (c - h)
TH (c - a)
: 2.5 °C/W
= 1 °C/W, we need a heatsink with R
=
T
-------
P
Power Resistor Thick Film Technology
=
For technical questions, contact:
± 900 ppm/°C
125
--------- -
10
 0.010
= 12.5 °C/W
P =
IEC 60068-2-14 Test Na
Method 103 B Cond. D
Method 211 Cond. A1
Method 204 Cond. D
1000 h P
100G, MIL-STD-202
Method 213 Cond. I
- 55 °C to + 155 °C
---------------------------------------------------------- -

CONDITIONS
R
MIL-STD-202
MIL-STD-202
MIL-STD-202
EN 60115-1
EN 60115-1
EN 60115-1
U
TH (j - c)
1.5 P
S
5 cycles
< 1.5 U
r
at + 25 °C
r
/5 s
T
+ R
± 700 ppm/°C
L
TH (c - a)
 0.015
TH (h - a)
[e-mail]

1  
± 1 % at ± 10 %
= 9 °C/W.
± 250 ppm/°C
 0.1
± (0.5 % + 0.005 )
± (0.5 % + 0.005 )
± (0.5 % + 0.005 )
± (0.2 % + 0.005 )
± (0.2 % + 0.005 )
± (0.5 % + 0.005 )
REQUIREMENTS
± (1 % + 0.005 )
Document Number: 50050
Revision: 21-Jan-11
± 150 ppm/°C
 0.5