Surface Mounted
Resistors
Resistors
Surface
Mounted Resistors
Surface
Mounted
CR Series
CR Series
CECC released products
Resistors
CECC released products
for high reliability applications
versions available
CR
100% high temperature and overload screened
Series
Terminations available for wire bonding or soldering
CECC released products
to 0503
versions available for high reliability applications
Available in sizes down
temperature and
1 ohm to 100M ohms
100% high
Resistance range
overload screened
Terminations available for wire bonding or soldering
versions available for high reliability applications
Tolerances down
Terminations available for wire
to 0.1%
or soldering
Available in sizes down to 0503
bonding
Solder terminations have a nickel barrier layer
Resistance
sizes down to
to 100M ohms
range 1 ohm
0503
Available in
Shorting Links available
Resistance range 1 ohm to 100M ohms
Tolerances down to 0.1%
Tolerances down to 0.1%
Solder terminations have a nickel barrier layer
Solder terminations have a nickel barrier layer
Shorting Links available
Shorting Links available
Welwyn Components
100% high temperature and overload screened
Welwyn Components
Electrical Data
All Pb-free parts comply with EU Directive 2011/65/EU amended by (EU) 2015/863 (RoHS3)
Notes
Electrical Data
Electrical Data
Commercial
CR0503
CR0603
CR0805
CR1005
CR1206
CR2010
CR2512
0.1
Power rating at 70°C
watts
0.063
0.125
0.125
0.25
0.5
1.0
Resistance range
ohms
1R to 10M
1R to 100M
1R to 1M
Limiting element voltage
volts
CR0603
50
CR0805
75
CR1005
100
CR1206
150
CR2010
200
R2512
400
Notes
500
Commercial
CR0503
C
TCR -55° to +155°C
ppm/°C
0.1
Power rating at 70°C
watts
0.063
0.125
0.125
0.25
0.5
1.0
<10R: 200, 10R-1M0: 100, >1M0:250
Resistance range
sistance toleranc
ohms
1R to
%
10M
1R to 100M
1R
1 2,
Re
e
0.1, 0.25, 0.5,
to
,
1M
5
75
Limiting element voltage
temperatu
volts
nge
50
100
150
200
400
500
Ambient
re ra
°C
-55 to 155
<10R: 200,
10R-1M0: 100, >1M0:250
0.1, 0.2
C
, 0.
805
, 2, 5
5
R0
5, 1
-55 to 155
See table of val
Power rating at 70°C
Resistance range
CECC 40401-004 Requirements
Limiting
Power rating at 70°C
element voltage
watts
TCR
Resistance range
-55°C to +125°C
s
ohm
TCR +20°C
Limiting element voltage
to +70°C
volts
TCR -55°C to +125°C
nce tolera
ppm/°C
Resista
nce
TCR +20°C to
Ambient temperature range
+70°C
ppm/°C
TCR -55° to +155°C
ppm/°C
Resistance toleranc
C 40401-004 Requirements
%
CEC
e
Ambient temperature range
°C
watts
ohms
volts
ppm/°C
ppm/°C
%
°C
0.125
CR1206
0.25
See table of value ranges
CR0805
0.125
200
1R to 10M
<10 ohms 200: 10 to 1M 100: >1M 200
<10 ohms 200: 10 to 1M 50: >1M 100
100
200
<10 ohms 200: 10 to 1M 100: >1M 200
1, 2, 5
0.5,
<10 ohms 200: 10 to 1M 50: >1M
-55 to +125
100
0.5, 1, 2, 5
to +125
CR0603
-55
CR0805
See table of value ranges
CR1206
100
0.25
1R to 10M
See table of val
Resistance tolerance
%
Ambient temp
C
r
ECC
e
4
r
0401-008 Requirements
e atur ange
°C
CECC 40401-008 Requirements
Resistance range
Power rating at 70°C
watts
Limiting element voltage
Resistance range
ohms
TCR -55°C
Limiting element voltage
to +155°C
volts
Resistance toleran
ppm/°C
ce
TCR -55°C to +155°C
Resistance tolerance
ent temperature r
%
ge
Ambi
an
Ambient temperature range
°C
Power rating at 70°C
CR1206
CR2010
CR2512
watts
0.125
0.25
0.5
1.0
0.1
CR0603
CR0805
CR1206
CR2010
CR2512
ohms
1R to 10M
1R to 10M 1R to 1M
1R to 1M
0.125
0.25
0.5
1.0
0.1
volts
100
to 10M 1R to 1M
200
to 1M
400
500
75
1R to 10M
1R
1R
ppm/°C
75
<10R: 200, 10R-1M0: 100, >1M0:250
100
200
400
500
%
0.1, 0.25, 0.5, 1, 2, 5
<10R:
0.5, 1,
10R-1M0: 100, >1M0:250
200,
2, 5
0.1, 0.25, 0.5, 1, 2, 5
See table of value ranges
°C
1, 2, 5
-55 to 155
0.5,
-55 to 155
See table of val
CECC 40401-003 Requirements
Power rating at 70°C
Power rating at 70°C
watts
Resistance range
Resistance range
ohms
Limiting element voltage
Limiting element voltage
volts
TC
25
-55°C to +12
ppm/°C
R
°C
5°C
TCR -55°C to +1
CECC 40401-003 Requirements
watts
ohms
volts
ppm/°C
%
°C
Res
c
t
Resistance toleran
is
e
ance tolerance
%
Ambient temp
A
rat
bi
re
n
r
t
an
emperature r
°C
ge
e
m
u
e t
ge
an
CR0805
CR1206
0.063
0.125
0.063
0.125
1R to 3M
1R to 5M
1R to 3M
1R to 5M
100
200
200
100
<5
hms 3
50
<5 ohms 500: 5 to 10 o
ohms
50:
0: 5 to 10 ohms 350:
10 to
ohms 250
10 to 3M ohms 100: >3M
3M ohms 100: >3M ohms 250
0.25, 0.5, 1, 2, 5
0.25, 0.5, 1, 2, 5
See table of value ranges
-55 to 125
-55 to 125
CR0805
CR1206
See table of val
These tables indicate the
tables
specification requirements, and these are met or exceeded by
are met or exceeded by the
product
s
These
CECC
indicate the CECC specification requirements, and these
the corresponding CR series
corresponding CR series product
s
Values
Thermal impedance
Values
E24 & E96 preferred
°C/watt
A
m
800
Thermal impedance
°C/watt
A
m
550
1
800
360
1.5
550
1
290
360
200
2
E24 & E96 preferred
290
80
Any value to order
70
Mounted on custom
80
70
designed PCB’s
Any value to
200
3
Zero-ohm rating
Zero-ohm rating
Zero-ohm residual resistance
Mounted on c
designed P
Zero-ohm residual resistance
<20
1.5
2
3
<20
General Note
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.
BI Technologies IRC Welwyn
www.ttelectronics.com/resistors
© TT Electronics plc
06.18
Surface Mounted
Surface Mounted
Resistors
Resistors
CR Series
CR Series
Surface Mounted
Resistors
CR Series
Welwyn Components
Welwyn Components
Physical Data
Physical Data
Dimensions (mm) & Weight (mg)
(mm) & Weight (g)
Dimensions of Standard Styles
Physical Data
Wrap around
Wrap
max
around
Style
L
W
T
Dimensions of Standard Styles (mm) & Weight (g)
C
Wt
A
B
†
B
1
Wrap around
Wt
Style
L
W
T max
A
C
T
Style
L
W
T max
A
B
Wt
C
0503
1.25±0.1
0.63±.1
0.5
Not available
0.20±0.1
C
A
1.5
0503
1.25±0.2 0.63±.15
0.5
Not available
0.20±0.1 0.005
0503
0.005
B
0603
1.6±0.1
0.8±0.1
0.55
1.25±0.2 0.63±.15 0.5
0.3±0.15
0.6 min
Not available 0.20±0.1
L
2.2
A
0.3±0.15
W
0805
2.0±0.2 1.25±0.15
0.6
0805
0.3±0.15 0.9 min 0.3±0.1
0.009
2.0±0.2 1.25±0.15
0.6
0.3±0.15 0.9 min 0.3±0.1
0.009
0805
2.0±0.15 1.25±0.15
0.6
0.3±0.15
0.9 min
Not available 0.4±0.15
4.7
terminations
0.3±0.1
W rap-around
2.5±0.3 1.25±0.2
0.4±0.15
0.7
0.015
1005
2.5±0.3 1.25±0.2
0.7
1005
Not available
0.015
(3 faces)
1005
2.5±0.2
1.25±0.2
0.7
Not available
0.4±0.2 1.8 min 0.4±0.15
6.5
0.4±0.15
1206
3.2±0.2 1.6±0.2
0.7
0.020
L
1206
3.2±0.2 1.6±0.2
0.7
0.4±0.2 1.8 min 0.4±0.15 0.020
2010
5.1±0.3 2.5±0.2
0.7
0.6±0.3 3.0 min
0.036
Alternative styles for
1206
3.2±0.2
1.6±0.2
0.7
0.4±0.2
1.7 min
0.4±0.15
N/A
8.5
Planar
2010
5.1±0.3 2.5±0.2
0.7
2512
0.6±0.3 3.0 min
N/A
0.6±0.3 4.4 min
Alternative styles for
surface mounting resistors
terminations
0.036
6.5±0.3 3.2±0.2
0.7
N/A
0.055
2010
5.1±0.3
2.5±0.2
0.8
0.6±0.3
3 min
0.6±0.25
36
surface mounting resistors
2512
6.5±0.3 3.2±0.2
0.7
This
0.6±0.3
determines the number of conductors which may pass under the surface mounted device.
4.4 min
N/A
0.055
2512
6.5±0.3
3.2±0.2
0.8
dimension
0.6±0.3
4.4min
0.6±0.25
55
†
T
A
C
B
L
C
T
W
A
W
C
T
W rap-around terminations
(3 faces)
L
Planar terminations
W
†
†
This dimension determines the number of conductors which may pass under the surface mounted device.
Construction
Solderability
Thick film resistor material, overglaze and organic protection
are screen printed on a 96% alumina substrate.
Wrap-around terminations have an electroplated nickel barrier
and solder coating, this ensures excellent ‘leach’ resistance
Construction
Solderability
properties and solderability. They will withstand immersion in
solder at
have an
seconds.
Terminations
Thick film resistor material, overglaze and organic protection
Wrap-around terminations
260°C for 30
electroplated nickel barrier
Planar (or single-sided) termination is gold and suitable for
are screen printed on a 96% alumina substrate.
and solder coating, this ensures excellent ‘leach’ resistance
wire-bonding; wrap-around is suitable for soldering.
Marking
properties and solderability.
information recorded on the
immersion in
or reel.
All relevant
They will withstand
primary package
Terminations
Performance Data
Planar (or single-sided) termination is gold and suitable for
wire-bonding; wrap-around is suitable for soldering.
Load at rated power: 1000 hours at 70°C
solder at 260°C for 30 seconds.
CECC
Marking
40401-008
∆R%
2
-
Zero at 155°C
CECC40401-004 CECC40401-003
2
-
Zero at 125°C
≤
3M3 2
>3M3 3
-
Zero at 125°C
2
≤
3M3 2
2
1
2
2
Actual
0.25
Requirements Requirements Requirements
Maximum
All relevant information recorded on the primary package or
Typical
reel.
Performance Data
Shelf life: 12 months at room temp.
Derating from rated power at 70°C
Overload
∆R%
0.1
0.02
0.1
CECC 40401-008 CECC40401-004 CECC40401-003
∆R%
0603, 0805:1
0.5
Requirements
2
- 155°C for 008)
∆R%
1206:0.5
Requirements
∆R%
2
Actual
1
to 10M 1
>10M 2
1
0.25
0.25
Dry Heat: 1000 hours at UCT
Requirements
1
Maximum
Typical
0.2
1
0.25
Load at rated power: 1000 hours at 70°C
25°C for 003 & 004
∆R%
(1
Long term damp heat
2
2
∆R%
∆R%
≤
3M3 2
>3M3
2
-
0.5
2
0.5
>3M3
2
3
0.25
>10M
0.02
0.1
0.05
0.05
3
Shelf life: 12 months at room temp.
Derating from rated power at 70°C
Overload
Dry Heat: 1000 hours at UCT
(125°C for 003 & 004 -
Long term damp heat
Temperature rapid change
Resistance to solder heat
Voltage proof
Temperature rapid change
Resistance to solder heat
Voltage proof
∆R%
∆R%
-
-
0.5
0.5
1206:300, 2010:400,
2512:500
0.1
1
Zero at 155°C
0603, 0805:1
2
Zero
ts
at
0603:150, 0805:200,
125°C
Zero at 125°C
vol
0.5
1
2
0.5
0.5
0805:200, 1206:300
0503:100, 0603:300,
All others: 500
1206:0.5
Note: An 0.01 ohm addition to be added to the performance of all resistors <10 ohms
155°C for 00
Value Ranges (ohms)
8)
Tolerance
Size
0503
0603
0805
1005
1206
2010
∆R%
≤
3M3 2
>3M3 3
2
1 to 10M
1 to 10M
1 to 50M
1 to 50M
1 to 1M
to 10M 1
>10M 2
%
0.2
>10M 1
0.25
N/A
N/A
100 to 1M
∆R%
∆R%
∆R%
volts
2
0.5
0.5
5
1 to 10M
1 to 10M
2
1
10 to 10M
1 to 10M
2
1 to 20M
1 to 25M
1 to 1M
1
0.25
100 to 1M
100 to 1M
0.25
10 to 10M
10 to 10M
10 to 10M
10 to 10M
0.5
1
0.25
0.05
0.05
0.1
N/A
N/A
100 to 1M
100 to 1M
N/A
N/A
1 to 100M
0603:150, 0805:200,
1
1206:300, 2010:400,
to 100M
2512:500
1 to 100M
1 to 1M
1 to 50M
1 to
0805:200, 1206:300
20M
0503:100,
to 1M
10 to 10M
100
0603:300,
to 1M
100
All others:
to 1M
500
100
100 to 1M
100 to 1M
Note: An 0.01 ohm addition to be added to the performance of
to 1M
all resistors
to 1M
ohms
1 to 1M
<10
2512
1
1
Value Ranges (ohms)
Tolerance
Size
0503
0603
0805
1005
1206
2010
2512
5
© Welwyn Components Limited
Bedlington, Northumberland NE22 7AA, UK
Telephone: +44 (0) 1670 822181 · Facsimile: +44 (0) 1670 829465 · Email: info@welwyn-tt.com · Website: www.welwyn-tt.com
%
2
1 to 10M
1 to 10M
1 to 50M
1 to 50M
1 to 50M
1 to 1M
1 to 1M
1
10 to 10M
1 to 10M
1 to 20M
1 to 20M
1 to 25M
1 to 1M
1 to 1M
0.5
100 to 1M
100 to 1M
10 to 10M
10 to 10M
10 to 10M
10 to 10M
10 to 10M
0.25
N/A
N/A
100 to 1M
100 to 1M
100 to 1M
100 to 1M
100 to 1M
0.1
N/A
N/A
100 to 1M
100 to 1M
100 to 1M
N/A
N/A
1 to 10M
1 to 10M
1 to 100M
1 to 100M
1 to 100M
1 to 1M
1 to 1M
© Welwyn Components
General Note
(0) 1670 822181
Limited
Bedlington, Northumberland NE22 7AA, UK
Telephone: +44
· Facsimile: +44 (0) 1670 829465 · Email: info@welwyn-tt.com · Website: www.welwyn-tt.com
BI Technologies
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.
IRC Welwyn
www.ttelectronics.com/resistors
© TT Electronics plc
06.18
Surface Mounted
Surface Mounted
Resistors
Resistors
CR Series
CR Series
Welwyn Components
Application Notes
Operating Temperature Range
The chips themselves can operate at a maximum temperature
of 155°C (see performance claims above). For soldered chips,
the joint temperature should not exceed 110°C. This
condition is met when the stated power levels at 70°C are
used.
Packaging
Wrap-around Termination
Chip resistors are supplied taped and reeled on standard
8mm tape to IEC 286-3.
Mounting
This chip resistor is ideally suited for handling by automatic
methods due to its rectangular shape and the small
dimensional tolerances. Electrical connection to a ceramic
substrate or to a printed circuit board can be made by wire
bonding (eg suffix ‘G’ in CR0805G) or by reflow soldering of
wrap-around terminations (eg suffix ‘F’ in CR0805F).
The ‘F’ terminations provide good leach properties and ensure
reliable contact. Due to the robust construction the resistor
chip
7. Packaging –
in the solder bath for 30
reel 3000 max”
can be immersed
delete “Quantity per
seconds at
260°C. This enables the resistor to be mounted on one side
8. Ordering Procedure – replace section with below
of a printed circuit board and other wire-leaded components
on the other side.
Planar Terminations
Resistor chips are supplied in waffle packs.
Ordering Procedure
Ordering Procedure
C
1
R
2
5
2
1
2
F
3
Example: CR2512 with solderable wraparound terminations at 10 kilohms and 1% tolerance
on a reel
CR2512F-10KFI
(2512
Example:
of up to 1800 pieces -
with solderable wraparound terminations, 10 kilohms ±1%, Pb-free)
Type
-
1
0
4
K
F
5
CR2512F
–
10KF
I
I
6
6
Termination & Packing
2
3
4
F
1
Solderable wraparound
0805, 1206, 2010, 2512 only
5
G
Type Size
planar
Gold pad
All
Termination
sizes
Value
Tolerance
0503
0603
0805,
0805 F 1206,
Tolerance (use IEC62
2010,
1005
B 0.1%
D 0.5%
2512
1206
C 0.25%
F 1%
2010
All
G sizes
2512
0603,
Value (use IEC62 code)
CR
Solderable
E24 or E96
3/4 characters
R = ohms
K = kilohms
M = megohms
Termination
code)
wraparound
G 2%
J 5%
Gold pad
planar
Packing
I
Tape
Waffle
0805F, 1206F, 2010F
2512F
G Termination
B = ±0.1%
Pb-free solderable (RoHS)
C = ±0.25%
0603F
up to 5000/reel
D = ±0.5% I 0805F,1206F,2010F up to 3000/reel
F = ±1%
2512F
up to 1800/reel
G = ±2%
SnPb solderable
J = ±5%
0603F
up to 5000/reel
R005J = zero ohm jumper
PB 0805F,1206F,2010F up to 3000/reel
2512F
up to 1800/reel
Up to 3000/reel
Gold pad planar
Up to 1800/reel
Standard
I
xxxxG
Waffle
For CECC
released product state on
on order the CECC number. Example:
CR2512F-10KFI CECC40401-008
For CECC
released product state
order the CECC number. Example:
CR2512F-10KFI CECC40401-008
For SnPb finish instead of Pb-free replace the packing suffix with
PB.
Example:
CR2512F-10KFPB
For zero-ohm jumper chips use the dummy value & tolerance code
R005J
General Note
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.
BI Technologies IRC Welwyn
www.ttelectronics.com/resistors
© Welwyn Components Limited
Bedlington, Northumberland NE22 7AA, UK
Telephone: +44 (0) 1670
© TT Electronics plc
822181 · Facsimile: +44 (0) 1670 829465 · Email: info@welwyn-tt.com · Website: www.welwyn-tt.com
11 . 09
06.18
19
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