LTO 30
Vishay Sfernice
www.vishay.com
30 W Power Resistor Thick Film Technology
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.
DIMENSIONS in millimeters
3.2
10.4
3.2
16.2
Ø 3.2
1.3
0.8
3.5
12.7
0.6
1.8
5.08
Note
Tolerances unless stated: 0.3 mm
•
STANDARD ELECTRICAL SPECIFICATIONS
RESISTANCE RATED POWER LIMITINGELEMENT
TEMPERATURE
COEFFICIENT
ꢁꢁm/°C
CRITICAL
RESISTANCE
TOLERANCE
ꢀ
MODEL
SIZE
RANGE
P25 °C
VOLTAGE UL
V
W
LTO 30
TO-220
0.010 to 550K
30
500
1, 2, 5, 10
150, 250, 700, 900
8.33K
ENVIRONMENTAL SPECIFICATIONS
MECHANICAL SPECIFICATIONS
IEC 60695-11-5
2 applications 30 s
separated by 60 s
Mechanical Protection
Resistive Element
Substrate
Molded
Flammability
Thick film
Alumina
Tinned copper
2 g max.
TECHNICAL SPECIFICATIONS
Connections
Dissiꢁation and Associated
Onto a heatsink
Weight
30 W at + 25 °C (case temp.)
Power Rating and
Thermal Resistance
of the Comꢁonent
Mounting Torqure
1 Nm
R
TH (j - c): 4.2 °C/W
Free air:
2.25 W at + 25 °C
See Performance table
150 ppm/°C
ENVIRONMENTAL SPECIFICATIONS
Temꢁerature Coefficient
Standard
Temꢁerature Range
- 55 °C to + 155 °C
Climatic Category
55/155/56
Dielectric Strength
MIL STD 202
1500 VRMS - 1 min
10 mA max.
Revision: 01-Aug-13
Document Number: 50049
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