LR Datasheet

LR
www.vishay.com
Vishay Dale Thin Film
Lead (Pb)-Free Thick Film, Wraparound
Low Value Resistor (R = 0.25 )
FEATURES
• Metal glaze on high quality ceramic
Available
• Protective overglaze
• Lead (Pb)-free solder contact on Ni barrier layer
• Pure tin plating provides compatibility with lead
(Pb)-free and lead containing soldering processes e3
• Material categorization: For definitions of compliance
please see www.vishay.com/doc?99912
STANDARD ELECTRICAL SPECIFICATIONS
MODEL
CASE
SIZE
INCH
CASE
SIZE
METRIC
POWER
RATING (1)
P70
W
LIMITING
ELEMENT
VOLTAGE
MAX.
V
TEMPERATURE
COEFFICIENT
± ppm/°C
TOLERANCE
±%
RESISTANCE
VALUE

LR
2512
6332
2.0
P x R
300
1
0.25
Note
(1) CECC 40401-802/EIA-575

DERATING
PARAMETER
UNIT
2512
Power rating
W
2.0
Limiting element voltage
V
P x R
Insulation voltage (1 min)
Vpeak
> 300
Thermal resistance
K/W
 45
Insulation resistance

> 109
Temperature range
°C
- 55 to + 125
Weight/1000 pieces
g
40.5
Rated Power in %
TECHNICAL SPECIFICATIONS
100
80
60
40
20
0
0
20
40
60 70 80
100
125 140
Ambient Temperature in °C
PERFORMANCE
TEST
CONDITIONS OF TEST
REQUIREMENTS (2)
Endurance test at 70 °C
IEC 60115-1, 4.25.1
1000 h at 70 °C, 1.5 h “ON”, 0.5 h “OFF”
Endurance at UCT
IEC 60115-1, 4.25.3
1000 h at 125 °C without load
Overload test
IEC 60115-1, 4.13
Short time overload for 2 s
±1%
Thermal shock
IEC 60115-1, 4.19; IEC 60068-2-14
Rapid change between upper and lower category temperature
±1%
Damp heat steady state
IEC 60115-1, 4.24; IEC 60068-2-3
56 days at 40 °C and 93 % relative humidity
±2%
Resistance to soldering heat
IEC 60115-1, 4.18; IEC 60068-2-20
10 s at 260 °C solder bath temperature
±1%
±2%
 ± 0.5 %
Note
(2) Limits for change of resistance at test.
Revision: 24-Jul-13
Document Number: 20055
1
For technical questions, contact: [email protected]
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
LR
www.vishay.com
Vishay Dale Thin Film
DIMENSIONS in inches (millimeters)
CASE SIZE
2512
L
W
H
T1
T2
0.248 ± 0.008
(6.3 ± 0.2)
0.124 ± 0.006
(3.15 ± 0.15)
0.024 ± 0.004
(0.6 ± 0.1)
0.024 ± 0.008
(0.6 ± 0.2)
0.024 ± 0.008
(0.6 ± 0.2)
PART NUMBER AND PRODUCT DESCRIPTION
New Global Part Numbering: LR-2512MR250FSTS
L
R
2
5
1
2
M
R
2
5
0
F
S
T
S
GLOBAL MODEL
CASE SIZE
TCR
OHMIC VALUE
TOLERANCE
TERMINATION
PACKAGING
LR = Low value
wraparound chip
resistor
2512
M=
± 300 ppm/°C
R250
F = ± 1.0 %
S = Lead (Pb)-free
(e3)
Tape and reel
T0 = 100 min., 100 mult
T1 = 1000 min., 1000 mult
T3 = 300 min., 300 mult
T5 = 500 min., 500 mult
TF = Full reel 2000
TS = 100 min., 1 mult
Example: LR2512MR250FSTS is a 2512 case size wraparound chip resistor 0.25 , 1 % tolerance , with lead (Pb)-free terminations
Revision: 24-Jul-13
Document Number: 20055
2
For technical questions, contact: [email protected]
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
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www.vishay.com
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Disclaimer
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Vishay Intertechnology, Inc. hereby certifies that all its products that are identified as RoHS-Compliant fulfill the
definitions and restrictions defined under Directive 2011/65/EU of The European Parliament and of the Council
of June 8, 2011 on the restriction of the use of certain hazardous substances in electrical and electronic equipment
(EEE) - recast, unless otherwise specified as non-compliant.
Please note that some Vishay documentation may still make reference to RoHS Directive 2002/95/EC. We confirm that
all the products identified as being compliant to Directive 2002/95/EC conform to Directive 2011/65/EU.
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requirements as per JEDEC JS709A standards. Please note that some Vishay documentation may still make reference
to the IEC 61249-2-21 definition. We confirm that all the products identified as being compliant to IEC 61249-2-21
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Revision: 02-Oct-12
1
Document Number: 91000