LTO030F39001JTE3 [VISHAY]
RESISTOR, METAL GLAZE/THICK FILM, 2.25 W, 5 %, 150 ppm, 39000 ohm, THROUGH HOLE MOUNT, TO-220, ROHS COMPLIANT;
| 型号： | LTO030F39001JTE3 |
| 厂家： | 
VISHAY |
| 描述： | RESISTOR, METAL GLAZE/THICK FILM, 2.25 W, 5 %, 150 ppm, 39000 ohm, THROUGH HOLE MOUNT, TO-220, ROHS COMPLIANT 电阻器 |
| 文件： | 总4页 (文件大小：70K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
LTO 30
Vishay Sfernice
30 W Power Resistor Thick Film Technology
FEATURE
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
Compliant to RoHS directive 2002/95/EC
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
MECHANICAL SPECIFICATIONS
ELECTRICAL SPECIFICATIONS
Mechanical Protection
Resistive Element
Substrate
Connections
Weight
Molded
Resistance Range
0.010 to 550 k
Thick film
Alumina
Tinned copper
2 g max.
1 Nm
Tolerances (Standard)
Dissipation and Associated
1 ꢀ to 10 ꢀ
Onto a heatsink
30 W at + 25 °C (case temp.)
Power Rating and
Thermal Resistance
of the Component
RTH (j - c): 4.2 °C/W
Mounting Torqure
Free air:
2.25 W at + 25 °C
See Performance table
150 ppm/°C
DIMENSIONS
Temperature Coefficient
Standard
Standard Package
TO220 package
ENVIRONMENTAL SPECIFICATIONS
Limiting Element Voltage UL
250 V
Dielectric Strength
MIL STD 202
1500 VRMS - 1 min
10 mA max.
Temperature Range
Climatic Category
Flammability
- 55 °C to + 155 °C
55/155/56
IEC 60695-11-5
2 applications 30 s
separated by 60 s
Insulation Resistance
Inductance
104 M
0.1 µH
2.08 k
Critical Resistance
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74
For technical questions, contact: sfer@vishay.com
Document Number: 50049
Revision: 21-Jan-11
LTO 30
30 W Power Resistor Thick Film Technology
Vishay Sfernice
PERFORMANCE
TESTS
CONDITIONS
REQUIREMENTS
EN 60115-1
1.5 Pr/5 s
US < 1.5 UL
Momentary Overload
(0.5 ꢀ + 0.005 )
(0.5 ꢀ + 0.005 )
EN 60115-1
IEC 60068-2-14 Test Na
5 cycles
Rapid Temperature Change
- 55 °C to + 155 °C
EN 60115-1
1000 h Pr at + 25 °C
Load Life
(1 ꢀ + 0.005 )
(0.5 ꢀ + 0.005 )
(0.2 ꢀ + 0.005 )
(0.2 ꢀ + 0.005 )
(0.5 ꢀ + 0.005 )
MIL-STD-202
Method 103 B Cond. D
Humidity (Steady State)
Vibration
MIL-STD-202
Method 204 Cond. D
MIL-STD-202
Method 211 Cond. A1
Terminal Strength
Shock
100G, MIL-STD-202
Method 213 Cond. I
SPECIAL FEATURES
Resistance Values
0.010
0.015
0.1
0.5
Tolerances
1 ꢀ at 10 ꢀ
250 ppm/°C
Typical Temperature Coefficient
(- 55 ° to + 155 °C)
900 ppm/°C
700 ppm/°C
150 ppm/°C
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:
1
T
-----------------------------------------------------------
P =
RTH (j - c) + RTH (c - a)
R
TH (c - a):Thermal resistance value measured between outer side of
P: Expressed in W
T: Difference between maximum working temperature and room
temperature
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
compound.
of the thermal
R
TH (j - c):Thermal resistance value measured between resistive layer
and outer side of the resistor. It is the thermal
of the component.
resistance
Example:
RTH (c - a) for LTO 30 power rating 10 W at ambient temperature + 25 °C
Thermal resistance RTH (j - c): 4.2 °C/W
Considering equation (1) we have:
T = 150 °C - 25 °C = 125 °C
T
P
125
---------
= 12.5 °C/W
-------
RTH (j - c) + RTH (c - a)
=
=
10
RTH (c - a) = 12.5 °C/W - 4.2 °C/W = 8.3 °C/W
with a thermal grease RTH (c - h) = 1 °C/W, we need a heatsink with RTH (h - a) = 7.3 °C/W.
Document Number: 50049
Revision: 21-Jan-11
For technical questions, contact: sfer@vishay.com
www.vishay.com
75
LTO 30
30 W Power Resistor Thick Film Technology
Vishay Sfernice
OVERLOADS
In any case the applied voltage must be lower than the
maximum overload voltage of 375 V.
POWER RATING
The temperature of the case should be maintained within the
limits specified.
The values indicated on the graph below are applicable to
resistors in air or mounted onto a heatsink.
To improve the thermal conductivity, surfaces in contact
should be coated with a silicone grease and the torque
applied on the screw for tightening should be around 1 Nm.
ENERGY CURVE
100
125
100
10
1
75
50
25
0
0.1
0.01
10-6
10-5
10-4
10-3
10-2
0
20
40
60
80
100
120
140 150
OVERLOAD DURATION IN s
CASE TEMPERATURE IN °C
MARKING
PACKAGING
Tube of 50 units
Model, style, resistance value (in ), tolerance (in ꢀ),
manufacturing date, Vishay Sfernice trademark.
ORDERING INFORMATION
LTO
30
F
2.7 k
1 %
xxx
TU50
e3
MODEL
STYLE CONNECTIONS RESISTANCEVALUE TOLERANCE CUSTOM DESIGN PACKAGING LEAD (Pb)-FREE
1 ꢀ
2 ꢀ
5 ꢀ
Optional
on request:
Special TCR,
shape etc.
10 ꢀ
GLOBAL PART NUMBER INFORMATION
L
T
O
0
3
0
F
2
7
0
0
0
J
T
E
3
GLOBAL
MODEL
SIZE
LEADS
OHMIC VALUE
TOLERANCE
PACKAGING
T = Tube
LEAD (Pb)-FREE
LTO
030
F = Radial leads
The first four digits are
significant figures and the
last digit specifies the
number of zeros to follow.
R designates decimal point.
F = 1 ꢀ
G = 2 ꢀ
J = 5 ꢀ
K = 10 ꢀ
E3 = Pure tin
Tube 50 pieces
48R70 = 48.7
48701 = 48 700
10002 = 100 000
R0100 = 0.01
R4700 = 0.47
27000 = 2700 = 2.7 k
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76
For technical questions, contact: sfer@vishay.com
Document Number: 50049
Revision: 21-Jan-11
Legal Disclaimer Notice
Vishay
Disclaimer
ALL PRODUCT, PRODUCT SPECIFICATIONS AND DATA ARE SUBJECT TO CHANGE WITHOUT NOTICE TO IMPROVE
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Document Number: 91000
Revision: 11-Mar-11
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1
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