Instruction Manual

Document Number: 50049 For technical questions, contact: [e-mail]
www.vishay.com
Revision: 16-Oct-08 1
LTO 30
Vishay Sfernice
30 W Power Resistor Thick Film Technology
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.
FEATURE
• 30 W at 25 °C case temperature heatsink
mounted
• Direct mounting ceramic on heatsink
• Broad resistance range: R010 to 550K
• Non inductive
• TO-220 package: Compact and easy to mount
• RoHS compliant
DIMENSIONS in millimeters
MECHANICAL SPECIFICATIONS
Mechanical Protection Molded
Resistive Element Thick film
Substrate Alumina
Connections Tinned copper
Weight 2 g max.
Mounting Torqure 1 Nm
DIMENSIONS
Standard Package TO-220 isolated case
ENVIRONMENTAL SPECIFICATIONS
Temperature Range - 55 °C to + 155 °C
Climatic Category 55/155/56
Flammability IEC 60695-11-5
2 applications 30 s
separated by 60 s
RoHS
COMPLIANT
• Tolerance unless otherwise specified: ± 0.3 mm
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
ELECTRICAL SPECIFICATIONS
Resistance Range 0.010 Ω to 550 kΩ
Tolerances (Standard) ± 1 % to ± 10 %
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
Limiting Element Voltage U
L
250 V
Dielectric Strength
MIL STD 202
1500 V
RMS
- 1 min
10 mA max.
Insulation Resistance ≥ 10
4
MΩ
Inductance ≤
0.1 µH
Critical Resistance 2.08 kΩ