Datasheet

LTO 30
www.vishay.com
Vishay Sfernice
Revision: 16-Nov-17
1
Document Number: 50049
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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
30 W Power Resistor Thick Film Technology
DESIGN SUPPORT TOOLS
FEATURES
• 30 W at 25 °C case temperature heatsink
mounted
• Direct mounting ceramic on heatsink
• Broad resistance range: 0.010  to 550 k
• Non inductive
• TO-220 package: compact and easy to mount
• Material categorization: for definitions of compliance
please see www.vishay.com/doc?99912
LTO series are the extension of RTO types. We used the direct ceramic mounting design (no metal tab) of our RCH power
resistors applied to semiconductor packages.
Note
• Tolerances unless stated: ± 0.3 mm
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Available
Models
DIMENSIONS in millimeters
STANDARD ELECTRICAL SPECIFICATIONS
MODEL SIZE
RESISTANCE
RANGE

RATED POWER
P
25 °C
W
LIMITING ELEMENT
VOLTAGE U
L
V
TOLERANCE
± %
TEMPERATURE
COEFFICIENT
± ppm/°C
CRITICAL
RESISTANCE

LTO 30 TO-220 0.010 to 550K 30 500 1, 2, 5, 10 150, 250, 700, 900 8.33K
3.2
16.2
10.4
1.8
5.08
0.6
3.5
1.3
0.8
12.7
3.2
Ø 3.2
MECHANICAL SPECIFICATIONS
Mechanical Protection Molded
Resistive Element Thick film
Substrate Alumina
Connections Tinned copper
Weight 2 g max.
Mounting Torqure 1 Nm
ENVIRONMENTAL SPECIFICATIONS
Temperature Range -55 °C to +150 °C
Climatic Category 55 / 155 / 56
Flammability
IEC 60695-11-5
2 applications 30 s
separated by 60 s
TECHNICAL SPECIFICATIONS
Dissipation and Associated Onto a heatsink
Power Rating and 
Thermal Resistance 
of the Component
30 W at +25 °C (case temp.)
R
TH (j - c)
: 4.2 °C/W
Free air:
2.25 W at +25 °C
Temperature Coefficient See Performance table
Standard ± 150 ppm/°C
Dielectric Strength 
MIL STD 202
1500 V
RMS
- 1 min
10 mA max.
Insulation Resistance  10
4
M
Inductance  0.1 μH