Resistors
Surface Mounted Resistors
CR Series
Available to EN140401 & CECC40401 release
100% high temperature and overload screened
versions available for high reliability applications
Terminations available for wire bonding or soldering
Available in sizes down to 0503
Resistance range 1 ohm to 100M ohms
Tolerances down to 0.1%
Solder terminations have a nickel barrier layer
Shorting Links available
All Pb-free parts comply with EU Directive 2011/65/EU amended by (EU) 2015/863 (RoHS3)
Electrical Data
Electrical Data
Commercial
Power rating at 70° C
Resistance range
Limiting element voltage
TCR -55° to +155° C
Resistance tolerance
Ambient temperature range
watts
ohms
volts
ppm/° C
%
°C
CR0503
CR0603
0.1
0.063
1R to 10M
75
50
CR0805
0.125
100
<10R: 200,
CR1005
0.125
1R to 100M
150
CR1206
0.25
200
CR2010
CR2512
0.5
1.0
1R to 1M
400
500
Notes
10R-1M0: 100, >1M0:250
0.1, 0.25, 0.5, 1, 2, 5
-55 to 155
RR3216M
0.25
1R5 to 10M
200
See table of value ranges
EN140401-802 Requirements
Power rating at 70° C
watts
Resistance range
ohms
Limiting element voltage
volts
TCR -55° C to +125° C
ppm/° C
Resistance tolerance
Ambient temperature range
%
°C
RR2012M
0.125
1R5 to 10M
100
<10R: 200, 10R–1M0: 100, >1M0: 200
<10R: 5, 10R–1M0: 1, 2, 5, >1M0: 5
-55 to 155
CR0805
0.125
1R to 10M
100
200
<10 ohms 200: 10 to 1M 100: >1M 200
<10 ohms 200: 10 to 1M 50: >1M 100
0.5, 1, 2, 5
-55 to +125
CR0805
0.125
0.1
1R to 10M
100
75
<10R: 200,
0.5, 1, 2, 5
CR0603
CR1206
CR2010
0.25
0.5
1R to 10M 1R to 1M
200
400
10R-1M0: 100, >1M0:250
0.1, 0.25, 0.5, 1, 2, 5
-55 to 155
CR2512
1.0
1R to 1M
500
See table of value ranges
CR1206
0.25
See table of value ranges
CECC 40401-004 Requirements
Power rating at 70° C
watts
Resistance range
ohms
Limiting element voltage
volts
TCR -55°C to +125° C
ppm/° C
TCR +20°C to +70° C
ppm/° C
Resistance tolerance
%
Ambient temperature range
°C
CECC 40401-008 Requirements
Power rating at 70° C
watts
Resistance range
ohms
Limiting element voltage
volts
TCR -55°C to +155° C
ppm/° C
Resistance tolerance
%
Ambient temperature range
°C
CECC 40401-003 Requirements
Power rating at 70° C
watts
Resistance range
ohms
Limiting element voltage
volts
TCR -55° C to +125° C
ppm/° C
Resistance tolerance
Ambient temperature range
Values
Thermal impedance
Zero-ohm rating
Zero-ohm residual resistance
°C/wat t
A
m
800
550
1
%
°C
See table of value ranges
CR0805
CR1206
0.063
0.125
1R to 3M
1R to 5M
100
200
<5 ohms 500: 5 to 10 ohms 350:
10 to 3M ohms 100: >3M ohms 250
0.25, 0.5, 1, 2, 5
-55 to 125
E24 & E96 preferred
360
1.5
<20
290
200
2
80
3
70
See table of value ranges
These tables indicate the EN140401 & CECC40401 specification requirements, and these are met or exceeded by the corresponding CR series products.
Any value to order
Mounted on custom
designed PCB’s
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
11.20
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)
Dimensions of Standard Styles (mm) & Weight (g)
Physical Data
Wrap around
Wrap
max
around
Style
L
W
T
Dimensions of Standard Styles (mm) & Weight (g)
C
Wt
1
A
B
†
Wrap around
Wt
Style
L
W
T max
A
C
B
T
Style
L
T max
Wt
C
0503
1.25±0.2 0.63±.15
1.25±0.1
0.63±.1
0.5
0.5
Not available
W
available
A
0.005
B
Not
0.20±0.1
0.20±0.1
C
1.5
A
0503
0503
1.25±0.2 0.63±.15
0.5
Not available
0.20±0.1
B
0.005
0603
1.6±0.1
0.8±0.1
0.6
0.55
0.3±0.15
0.6 min
0.009
0.3±0.15
2.2
W
0805
2.0±0.2 1.25±0.15
0.3±0.15 0.9 min 0.3±0.1
0.3±0.15 0.9 min 0.3±0.1
L
0.009
A
0805
2.0±0.2 1.25±0.15
0.6
0805
2.0±0.15 1.25±0.15
0.6
0.3±0.15
0.9 min
0.3±0.1
W rap-around terminations
2.5±0.3 1.25±0.2
0.4±0.15
Not available
0.7
0.4±0.15
4.7
0.015
1005
2.5±0.3 1.25±0.2
0.7
1005
Not available
0.015
(3 faces)
1206
3.2±0.2 1.6±0.2
0.7
0.020
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
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
mounting resistors
36
surface
2512
6.5±0.3 3.2±0.2
0.7
This dimension determines the number of conductors which may pass under the surface mounted device.
0.6±0.3 4.4 min
N/A
0.055
2512
6.5±0.3
3.2±0.2
0.8
0.6±0.3
4.4min
0.6±0.25
55
†
This dimension determines the number of conductors which may pass under the surface mounted device.
Construction
Solderability
†
T
A
C
B
L
C
T
W
A
W
C
T
W rap-around terminations
(3 faces)
L
Planar terminations
W
†
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 electroplated nickel barrier
Terminations
Thick film resistor material, overglaze and organic protection
Wrap-around terminations
260°C for 30 seconds.
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
Thick film resistor material, overglaze and organic protection
are screen printed on a 96% alumina substrate.
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
∆R%
solder at 260°C for 30 seconds.
EN140401-802
Marking
Requirements
1
-
Zero at 125°C
1
CECC 40401-008 CECC40401-004 CECC40401-003
Requirements
2
-
Zero at 155° C
1206:0.5
2
Requirements
2
-
Zero at 125° C
0.5
Requirements
≤
3M3 2
>3M3 3
-
Zero at 125°C
Maximum
1
0.1
Actual
0.25
Typical
All relevant information recorded on the primary package or reel.
Performance Data
Shelf life: 12 months at room temp.
Derating from rated power at 70° C
∆R%
0.02
EN140401-802
Overload
Load at rated power: 1000 hours at 70°C
∆R%
Shelf life: 12 months at room temp.
Derating from rated power at 70° C
Overload
Dry Heat: 1000 hours at UCT
Long term damp heat
Temperature rapid change
Resistance to solder heat
Voltage proof
CECC 40401-008 CECC40401-004 CECC40401-003
∆R%
0603, 0805:1
Requirements
∆R%
∆R%
∆R%
∆R%
Dry Heat: 1000 hours at UCT
Requirements
1
Requirements
2
-
Requirements
≤
3M3
1
2
>3M3
2
3
-
0.5
0.5
1
1
0.25
0.25
284
≤
3M3 2
>3M3 3
2
1
2
Maximum
1
2
Actual
1
to 10M 1
>10M 2
1
0.25
0.25
Typical
0.25
0.02
0.1
0.2
0.25
0.05
0.05
Long term damp heat
2
-
>10M 1
2
0.5
0.5
∆R%
-
Resistance to solder heat
Voltage proof
Zero
Temperature rapid change
0.1
at 125°C
1
Zero at
lt
155° C
vo s
0603, 0805:1
0603:150,
Zero at 125° C
0805:200,
at 125°C
Zero
∆R%
1206:0.5
Note: An 0.01 ohm addition to be added to the performance of all resistors <10 ohms
0.5
1
2
1206:300, 2010:400,
2512:500
0805:200, 1206:300
2
1
to 10M 1
>10M 2
1
0503:100, 0603:300,
All others: 500
0.1
∆R%
∆R%
Value
Tolerance
Size
1
Ranges
1
0.25
0.25
284
2
(ohms)
2
0.5
10M
1 to
1 to
0.5
10M
1 to 100M
0603:150, 0805:200,
1
2010:400,
1206:300,
to 100M
2512:500
1 to 100M
1 to 1M
5
≤
3M3 2
>3M3 3
1
10 to 10M
1 to 10M
2
1 to 20M
1 to 25M
1 to 1M
1
0.2
>10M 1
0.25
N/A
N/A
2
2
%
0.5
0.25
0.05
0.05
∆R%
0503
0603
∆R%
0.5
1 to 10M
1 to 10M
0.5
1 to 50M
1 to 50M
1 to 1M
0.25
100 to 1M
100 to 1M
0.25
10 to 10M
10 to 10M
10 to 10M
10 to 10M
10 to 10M
0.1
N/A
N/A
volts
0805
1005
1206
2010
1 to
0805:200, 1206:300
50M
1 to 20M
0503:100,
1M
0603:300,
to 1M
100 to
100
All others: 500
100 to 1M
100 to 1M
100 to 1M
100 to 1M
N/A
N/A
100 to 1M
100 to 1M
Note: An 0.01 ohm addition to be added to the performance of
to 1M
all resistors <10 ohms
1 to 1M
2512
1
1 to 1M
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 Limited
Bedlington, Northumberland NE22 7AA, UK
Telephone: +44
General Note
(0) 1670 822181 · 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
11.20
Surface Mounted
Surface Mounted Resistors
CR Series
CR Series
Resistors
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 can be immersed in the solder bath for 30 seconds at
260°C. This enables the resistor to be mounted on one side
of a printed circuit board and other wire-leaded components
on the other side.
Planar Terminations
Resistor chips are supplied in waffle packs.
Example: CR2512 with solderable wraparound terminations at 10 kilohms and 1% tolerance
on a reel of
CR2512F-10KFI
(2512 with solderable wraparound terminations, 10 kilohms ±1%, Pb-free)
Example:
up to 1800 pieces -
C
1
Type
R
2
5
2
1
2
F
3
-
1
0
4
K
F
5
I
Ordering Procedure
Ordering Procedure
CR2512F
–
10KF
I
6
7
F Solderable wraparound
Type Size
Termination
G Gold pad planar
CR
Termination
1
2
3
0805, 1206, 2010, 2512 only
Tolerance
All
Value
sizes
4
5
6
Termination & Packing
7
Release
Omit for commercial
or CECC
1
EN = EN140401-802
0503
B = ±0.1%
Pb-free solderable (RoHS)
0603,
E24 or E96 C = ±0.25%
0603F
Standard 2000 (max 5000)/reel
Value
0603
IEC62 code)
(use
0805, Solderable 3/4 characters
0805 F 1206,
D = ±0.5%
I 0805F, 1206F, 2010F Standard 800 (max 3000)/reel
wraparound
R = ohms
2010,
1005
F = ±1%
2512F
Standard 800 (max 1800)/reel
Tolerance (use IEC62 code)
K = kilohms G = ±2%
2512
1206
SnPb solderable
M = megohms
2010 G
D
All Gold planar
2%
J = ±5%
0603F
Standard 2000 (max 5000)/reel
B 0.1%
0.5%
G
2512
R005J = zero ohm jumper PB 0805F, 1206F, 2010F Standard 800 (max 3000)/reel
C 0.25%
F 1%
J 5%
2512F
Standard 800 (max 1800)/reel
Gold planar
Packing
I
xxxxG
Waffle pack
0805F, 1206F, 2010F Up to 3000/reel
I
2512F
Up to 1800/reel
Standard
Note 1:
Waffle
For CECC released product state on order the CECC number. Example:
CR2512F-10KFI
G Termination
Tape
CECC40401-008
For CECC released product state on 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
11.20
19
