i o` J i oc | bKè ñÇ= = NOLOPLM = NM M ^ j = = m
Q=
W T=
~ÖÉ=N
Low Value Flat
Resistors
Low Value Flat
Chip Resistor
Chip
Value Flat Chip Resistor
Resistor
Low
Value Flat
Low
LRC/LRF Series
LR Series
Chip Resistor
LRC/LRF Series
Standard 2512, 2010 and 1206 sizes
•
Standard
2512, 2010 and 1206 sizes
•
2010 and 1206 sizes
•
Standard
2512,
Resistance values down to 0.003 ohms
Resistance
•
ohms
•
Resistance
values down to 0.003
solder-plated copper
values down to
LRC/LRF Series
Leach resistant
0.003 ohms
Leach resistant solder-plated copper wrap-around termination
wrap-around termination
•
Leach resistant solder-plated copper
•
AEC-Q200 Qualified
Standard 2512, 2010 and 1206 sizes
•
Low inductance - less than 0.2nH
•
wrap-around termination
0.003 ohms
Resistance values
SnPb variants
RoHS compliant and
down to
•
AEC-Q200 Qualified
•
Low inductance - less than 0.2nH
Welwyn Components
Welwyn Components
Welwyn Components
Make Possible
•
•
•
•
Leach resistant solder-plated copper
wrap-around termination
AEC-Q200 Qualified
Low inductance - less than 0.2nH
AEC-Q200 Qualified
Electrical Data
LR1206
0.5
watts
All Pb-free parts comply with EU Directive 2011/65/EU (RoHS2)
0.5
1.0
1.5/2.0*
LR2010
to 1R
LR2512
Resistance range
ohms
0R010
0R003 to 1R
LR2512
0R003 to 1R
LR1206
LR2010
Power rating @70°C
watts
1
2
D
v
5
200
200
200
Power rating at
1
70°C
ielectric withstanding voltage
0.
olts
1.0
1.5/2.0*
ohms
R003 to 1R0
Resistance range
LR1206
LR2512
TCR
0
R
LR2010
t f
( na
Resistance range
ohms
0R
ppm/
to 1R
010
°C
<R01: 5,
±1
0
0
0
Co
2,
t
o
c
1R
actory for val
R
e
03
lo
o 1R
050 ohms)
0
u
0
be
t
w 0.
%
≥R01:
03 t
5
1,
Resistance tolerance
1
Power rating at 70°C
e i
watts
0.5
1.
≤R005
5%, >R005 1,
.
2,
/2.0*
0
1 5
5%
R
oltage
%
Dielectric withstanding
s
v
stance tolerance
volts
200
00
200
≥R05: ±100, R025–R047: <+200,
2
R015-R024: <+300,
TCR
sistance range
ppm/°C
Re
ohms
0R010
°C
1R
to
0 3 o 1R
Temperature rise at rated power
4
act
0
<R01:
r
<+900
below
0
.0
0R0
ohm
o
)
1R
0
o
R
y
0
o
t
value
8
0 50
03 t
s
90
R01-R014: <+500,
r f
TCR
ppm/°C
±100 (Contact f
Dielectric withstandi
Pad
voltage
area for max power rating @ 70°C
volts
ng
and trace
200
2
200
200
Dielectric
e tolerance
volts
200
mm
30
30
100
Resistanc
withstand
%
≤R005
5%, >R005 1, 2, 5%
TCR
ppm/°C
±100 (Con
-55
t
to
actory for value below 0.050 ohms)
tac f
+150
Ambient temperature range
°C
2
of
Temperature rise at
*2
t
Watts
wer
total solder pad and trace size
°C
300 mm
40
ra ed po
with
80
90
Resis
%
≤R005
5%,
2
Values
tance tolerance
E24 preferred
>R005 1, 2, 5%
2
Pad and
a
trace area
t
for
t
max
ow
mm
C
30
30
100
Temper tur
rise at
ra ed p
power rating @ 70°C
°
40
80
Temperature
e rise a
rated power
er
°C
40
80
90
90
2
30
30
30
100
300
100
Pad /
and
with total solder pad
rating @ 70°C
mm
2
*2
Pad
trace
trace
3
area for max power
and trace size of 300 mm
mm
2
Watts
area
Electrical Data
ing at 70°C
Power rat
Electrical Data
LR1206
watts
LR2010
LR2512
Physical Data
Physical Data
Dimensions (mm)
LR1206
LR2010
LR2512
Size
Dimensions (mm)
Size
LR1206
LR2010
LR2512
Note 1: Contact factory for value
pad and trace size of 300 mm
2
range. Note 2: Many values = N x R001 and N x R005 up to N=10 are also
*2 Watts with total solder
– tolerance combinations outside this
Dimensions (mm)
available. Note 3: Recommended minimum pad & adjacent trace area for each termination for rated dissipation on FR4 PCB
Size
L
W
H (max)
Physical Data
LR1206
LR2010
LR2512
D
3.20±0.305
1.63±0.20
0.8
0.48±0.25
L
3.20±0.305
5.23±0.38
6.50±0.38
5.23±0.38
6.50±0.38
L
3.20±0.305
5.23±0.38
6.50±0.38
W
1.63±0.20
1.63±0.20
2.64±0.25
2.64±0.25
W
3.25±0.25
3.25±0.25
W
2.64±0.25
3.25±0.25
H (max)
H (max)
0.84
0.84
D
0.48±0.25
0.48±0.25
0.48±0.25
D
0.48±0.25
0.48±0.25
0.48±0.25
0.48±0.25
0.48±0.25
LR 1206 /
0.8
10 / 2512
20
0.84
0.84
0.8
L
0.84
0.84
i o` J i oc | bKè ñÇ= = NOLOPLM = NM M ^ j = = m
Q=
W T=
~ÖÉ= O
H
LR 1206 /
/
2010 /
/
2512
LR 1206 2010 2512
W
W
D
L
L
Solder Plating
Nickel Barrier Layer
Copper Wraparound
Termination
Solder Plating
Alumina Substrate
Solder Plating
Nickel Barrier Layer
Nickel Barrier Layer
Copper Wraparound
Welwyn
Copper Wraparound
Termination
Termination
Alumina Substrate
Alumina Substrate
A
H
H
Low Value Flat
Chip Resistor
LRC/LRF Series
D
D
Protective Overcoat
Resistive Element
Copper Termination
Protective Overcoat
Protective Overcoat
Resistive Element
Resistive Element
Copper Termination
Copper Termination
Components
Recommended Solder Pad Dimensions (mm)
A
LR1206
LR2010
LR2512
General Note
2.0
B
4.0
C
1.25
B
General Note
3.05
6.5
Welwyn Components reserves the right to make changes in product specification
1.5
without notice or liability.
All information is subject to Welwyn’s own data and is considered accurate at time of going to print.
3.7
7.75
1.5
© Welwyn Components Limited
· Bedlington, Northumberland NE22 7AA, UK
C
A subsidiary of
TT electronics plc
04.10
General Note
subject to Welwyn’s own data and is considered accurate at time of going to print.
All information is
Telephone: +44
to
1670
changes in product specification without notice or liability.
Welwyn Components reserves the right
(0)
make
822181 · Facsimile: +44 (0) 1670 829465 · Email: info@welwyn-tt.com · Website: www.welwyn-tt.com
Temperature Cycling
©
4
Electronics plc
TT
6
7
JESD22 Method JA-104
R% 0.25
R%
R%
0.5
0.5
0.1
0.2
0.2
ower Rating
Welwyn Components reserves the right to make changes in product specification without notice or liability.
(%)
General Note
All information is subject to Welwyn’s own data and is considered accurate
NE22 7AA,
going to print.
© Welwyn Components Limited
· Bedlington, Northumberland
at time of
UK
AEC-Q200 Table
make changes in product specification
Email:
notice or liability.
Typ.
Telephone: +44 (0) 1670 822181
www.welwyn-tt.com
Max.
TT Electronics reserves the right to
7
· Facsimile: +44 (0) 1670 829465 ·
without
info@welwyn-tt.com · Website:
100
Method
R05)
(@1R0)
©
information is subject to TT Electronics’ own
·
data and is considered accurate
NE22
(add
going to print.
7AA,
ref
Test
All
Welwyn Components Limited
Bedlington, Northumberland
at time of
UK
80
Telephone: +44 (0) 1670 822181 · Facsimile: +44 (0) 1670 829465 · Email: info@welwyn-tt.com · Website: www.welwyn-tt.com
3
High Temp. Exposure MIL-STD-202 Method 108
R% 0.5 0.2
A subsidiary of
04.10
TT electronics plc
A subsidiary of
TT electronics plc
23
www.ttelectronicsresistors.com
04.10
23
Moisture Resistance MIL-STD-202 Method 106
Biased Humidity MIL-STD-202 Method 103
60
40
07.14
23
Recommended Solder Pad Dimensions (mm)
A
B
4.0
6.5
7.75
C
1.25
B
A
Low Value Flat
LR2010
Chip Resistor
LR Series
LR2512
LR1206
2.0
3.05
3.7
1.5
C
Make Possible
1.5
4
6
7
14
16
18
21
22
Temperature Cycling
JESD22 Method JA-104
R% 0.25
R% 0.5
R% 0.5
R%
1
R% 0.5
R% 0.25
R% 0.5
R% 0.25
R% 0.5
R% 0.5
0.1
0.2
0.2
0.5
0.05
0.1
0.2
0.1
Power Rating
ref
3
AEC-Q200 Table 7
Method
Test
High Temp. Exposure MIL-STD-202 Method 108
Moisture Resistance MIL-STD-202 Method 106
Biased Humidity MIL-STD-202 Method 103
Vibration MIL-STD-202 Method 204
Thermal Shock MIL-STD-202 Method 107
Solderability
Board Flex
Terminal Strength
Short Term Overload
Low Temperature Storage
Leach Resistance
J-STD-002
AEC-Q200-005
AEC-Q200-006
6.25 x Pr for 2s
-65°C for 100 hours
Solder dip at 250°C
(add R05)
Max.
(@1R0)
Typ.
0.2
(%)
100
80
60
40
20
0
25
70
Ambient temperature
150 (°C)
R% 0.5
8 Operational Life (Cyclic Load) MIL-STD-202 Method 108
15 Resistance to Soldering Heat MIL-STD-202 Method 210
R% 0.25 0.05
>95% coverage
LRC 25
12 1 w
2
att
LRC 20
10 0.5
1 watt
watt
LRC 12
06 0.25
.5 wa
a
w
tt
tt
90s minimum
Note:
1. Although 2010 and 2512 sizes have passed temperature cycling and thermal shock, it is in general not recommended that ceramic
chips this large be used on FR4 in a severe temperature cycle environment due to the possibility of solder joint fatigue.
2. Full AEC-Q200 qualification applies only to European Part Numbers at ohmic values
≥R01.
Ordering Procedure
Ordering Procedure
This product has two valid part numbers:
Example: LRF2512 at 10 milliohms (hence flip-chip mounted) and 2% tolerance on a reel of 1800 pieces
LRF2512
–
R01GW
European (Welwyn) Part Number: LRF1206-R02FW
(1206, 20 milliohms ±1%, Pb-free)
Type
Mounting
L
F
R F
1
2
0
6
-
R 0
Conventional (element up)
Values > R025
Flip-chip
1
(element down)
2
Values < R025
3
2
Size
3
Value
2
F
4
W
5
4
5
Termination & Packing
W
Pb-free, standard packing
T1 Pb-free, 1000/reel (non-standard)
PB
SnPb finish, standard packing
Standard packing is tape & reel
1206 & 2010
3000/reel
2512
1800/reel
Size
1
Value (use IEC62 code)
Tolerance (use IEC62 code)
F
G
J
Type
Tolerance
F = ±1%
G = ±2%
J = ±5%
1%
LR = Conventional orientation 1206 E24 = 3/4
(values >R025)
2%
2010 characters
5%
LRF = Flip-chip orientation 2512 R = ohms
(values
≤R025)
Packing
W
T1
Tape
1206 or 2010
2512
All sizes
3000/reel
1800/reel
1000/reel
Standard
USA (IRC) Part Number: LRC-LRF1206LF-01-R020-F
(1206, 20 milliohms ±1%, Pb-free)
L R C
-
L R F
1
2
0
6
F
-
© Welwyn Components Limited
Bedlington, Northumberland
L
NE22 7AA, UK
1
2
3
4
0
5
1
-
R
0
6
2
0
-
F
7
7
Tolerance
F = ±1%
G = ±2%
J = ±5%
Packing
Standard packing is
tape & reel
1206 & 2010 3000/reel
2512
1800/reel
04.10
Telephone: +44 (0) 1670 822181 · Facsimile: +44 (0) 1670 829465 · Email: info@welwyn-tt.com · Website: www.welwyn-tt.com
1
Family
LRC
2
Model
3
Size
4
Termination
5
TCR
6
Value
LR = Conventional orientation 1206 Omit for SnPb 01 = standard 4 characters
(values >R025)
R = ohms
2010 LF = Pb-free (±100ppm/°C
values
≥R05)
2512
LRF = Flip-chip orientation
(values
≤R025)
General Note
Electrical Data
© TT Electronics plc
TT Electronics reserves the right to make changes in product specification without notice or liability.
All information is subject to TT Electronics’ own data and is considered accurate at time of going to print.
www.ttelectronicsresistors.com
Power rating @70°C
watts
LR1206
0.5
LR2010
1
LR2512
2
07.14
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