Precision Thin Film
Nichrome Chip Resistors
PCF Series
Features
Precision thin film technology
Extended ohmic range 1R - 3M
Precision to ±0.01% and 1ppm/°C
Passivated range for superior humidity performance
Load life stability and humidity to 0.05%
AEC-Q200 grade available
All parts are Pb-free and comply with EU Directive 2011/65/EU amended by (EU) 2015/863 (RoHS3)
Electrical Data - Standard Range
Type
PCF0201
TCR (ppm/°C)
50
25
50
25
15
10
5
3
2
1
50
25
15
10
5
3
2
1
50
25
15
10
5
3
2
1
50
25
15
10
5
3
2
1
50
25
15
10
5
3
2
1
50
25
15
10
5
3
2
1
50
25
15
10
5
3
2
1
Power (W)
0.031
Limiting Element
Voltage (V)
15
1% & 0.5%
49R9-33K
49R9-5K
0.25%
Ohmic Value Range
1
0.1%
-
10R-205K
0.063
25
49R9-70K
49R9-12K
49R9-5K
-
49R9-12K
49R9-3K
49R9 - 4K99
49R9-20K
2R-1M
0.063
50
4R7-1M
4R7-332K
-
24R9-15K
4R7-332K
24R9-100K
24R9 – 15K
1R-2M
0.1
100
4R7-2M5
4R7-1M
-
-
24R9-500K
-
0.05%
0.01%
PCF0402
-
PCF0603
4R7-1M
PCF0805
24R9-49K9
24R9-30K
1R-2M5
0.125
150
4R7-2M5
4R7–1M
4R7-1M
-
24R9-500K
PCF1206
-
24R9-49K9
4R7-2M5
4R7–1M
-
1R-2M5
0.2
150
PCF1210
-
24R9-50K
24R9-49K9
1R-3M
0.25
150
4R7-3M
4R7-1M
-
4R7-1M
-
24R9-500K
PCF2010
24R9-100K
24R9-300K
1R – 3M
0.5
150
4R7-3M
4R7-1M
-
4R7-1M
-
24R9-500K
PCF2512
24R9-100K
Note 1: Standard values E24 or E96. Other values may be available by request.
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
10.21
Precision Thin Film Nichrome Chip Resistors
PCF Series
Electrical Data - AEC-Q200 Grade - Standard Range
Type
TCR
(ppm/ºC)
50
25
15
10
50
25
15
10
50
25
15
10
50
25
15
10
50
25
15
10
50
25
15
10
50
25
15
10
Power
(W)
0.063
Limiting
Element
Voltage (V)
25
Ohmic Value Range *
1%
0.5%
0.25%
49R9 – 100K
49R9-69K8
49R9-10K
10R-332K
10R-1M0
10R-511K
0.125
150
10R – 200K
0.1%
0.05%
49R9-10K
PCF0402…A
PCF0603…A
0.063
50
10R – 49K9
PCF0805…A
0.1
100
10R – 100K
PCF1206…A
PCF1210…A
0.25
150
10R-1M0
PCF2010…A
0.25
150
10R – 499K
PCF2512…A
0.5
150
* Standard values E24 or E96.
Electrical Data – High Power Range
Type
TCR (ppm/°C)
50
25
15
10
5
3
2
1
50
25
15
10
5
3
2
1
50
25
15
10
5
3
2
1
50
25
15
10
5
3
2
1
50
25
15
10
5
3
2
1
50
25
15
10
Power (W)
Limiting Element
Voltage (V)
0.5%
0.25%
4R7-1M
4R7-332K
24R9-15K
-
1R-1M
0.125
150
-
4R7-1M
0.25
200
-
4R7-1M
0.33
200
-
4R7-1M
0.33
200
-
0.75
200
1R-2K
24R9-50K
24R9-49K9
4R7-2K
24R9-2K
24R9-50K
24R9-49K9
24R9-500K
24R9-50K
24R9-49K9
24R9-500K
4R7-332K
4R7-511K
4R7-1M
24R9-30K
24R9-30K
24R9-500K
24R9-15K
4R7-511K
24R9-200K
Ohmic Value Range
*
0.1%
0.05%
4R7-332K
0.01%
24R9-100K
PCF0603H
0.1
75
PCF0805H
PCF1206H
PCF1210H
PCF2010H
PCF2512H
* Standard values E24 or E96. Other values may be available by request.
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
10.21
Type
Type
PCF0603H
Precision Thin Film Nichrome Chip Resistors
0.1
75
PCF0603H
PCF Series
PCF0805H
PCF1206H
PCF0805H
4R7-1M
24R9-50K
0.25
200
PCF1206H
Electrical Data - AEC-Q200 Grade – High Power Range
PCF1210H
PCF1210H
Type
(ppm/ºC)
TCR
(ppm/ºC)
50
25
50
15
25
10
15
5
10
50
25
5
15
50
10
25
5
15
50
10
25
5
15
50
10
25
5
15
50
10
25
5
15
50
TCR
25
10
15
(ppm/ºC)
5
10
5
50
50
25
25
15
15
10
10
TCR
5
50
(ppm/ºC)
50
25
25
50
15
15
25
10
10
Power
(W)
(W)
Limiting
Voltage (V)
Element
Voltage (V)
0.5%
0.5%
Ohmic Value Range *
0.05%
0.25%
0.1%
0.25%
4R7-1M
0.01%
0.01%
0.1%
0.05%
0.1
75
4R7-332K
24R9-15K
24R9-15K
4R7-332K
24R9-100K
24R9-100K
4R7-332K
0.125
0.125
150
150
4R7-1M
1R-1M
4R7-511K
4R7-511K
24R9-200K
24R9-200K
4R7-511K
4R7–1M
4R7-511K
24R9-30K
4R7-1M
24R9-30K
4R7-1M
0.25
200
24R9-500K
24R9-500K
Power
(W)
0.33
0.33
200
Limiting
Element
200
Voltage (V)
1%
0.5%
Ohmic Value Range *
4R7-1M
24R9-50K
0.25%
24R9-50K
4R7-1M
24R9-500K
0.1%
24R9-500K
0.05%
0.1
75
PCF0603H…A
Electrical Data -
0.33
Passivated Range
200
PCF2010H
24R9-50K
10R-332K
4R7-1M
10R-49K9
24R9-500K
Type
PCF0805H…A
PCF2512H
Power
(W)
0.125
0.75
Limiting Element
Voltage (V)
150
200
Ohmic Value Range *
0.25%
24R9-50K
10R-1M0
0.5%
1R-2K
0.1%
0.05%
0.01%
10R-100K
24R9-2K
Physical Data
Dimensions (mm) Weight (mg)
Electrical
&
Data - Passivated Range
L
Tmax
A
W
TCR
Power
0.6 ± 0.05
0.3 ± 0.05
0201
Type
(ppm/ºC)
0.5 ± 0.05
(W)
1.0 ± 0.05
0402
50
1.6 ± 0.2
0.8 ± 0.2
0603
25
0.063
PCF0402P
2.0 ± 0.2
1.25 ± 0.2
0805
15
3.2 ± 0.2
1.6 ± 0.2
1206
50
25
2.6 ± 0.2
1210
0.063
PCF0603P
3.2 ± 0.2
15
4.9 ± 0.2
2.4 ± 0.2
2010
50
6.3 ± 0.2
3.1 ± 0.2
2512
25
0.1
PCF0805P
0.063
25
15
* Standard values E24 or
50
E96.
50
Other values may be available by request.
25
PCF0603P
25
0.063
50
0.25
200
PCF1206H…A
15
15
50
10
PCF0805P
25
0.1
100
50
Limiting
15
25
TCR
Power
Element
50
0.33
200
Type
PCF1210H…A
(ppm/ºC)
(W)
Voltage
15
25
PCF1206P
0.125
150
(V)
10
15
50
50
50
0.166
100
PCF0603X
25
PCF2010P
25
0.25
150
25
50
0.33
200
PCF2010H…A
15
0.25
150
PCF0805X
15
25
50
50
10
0.333
200
PCF1206X
PCF2512P
25
0.5
150
25
15
50
* Standard values E24 or E96.
1
200
PCF2512X
25
PCF0402P
4R7-2K
25R-25K
10R-511K
49R9-12K
25R-332K
10R-200K
25R-100K
Electrical Data - Extended High Power Range
10R-800K
Ohmic
25R-200K
Value Range *
0.5%
0.25%
10R-1M0
10R-1M
0.1%
25R-500K
0.05%
0.01%
10R-499K
10R-332K
10R-1M
25R-500K
10R-500K
10R-1M
10R-1M
1R-100R
4R7-100R
25R-500K
* Standard values E24 or E96. Other values may be available by request.
15
50
Construction
25
10R-1M
0.125
150
PCF1206P
15
A thin-film material is selectively deposited on a 96% alumina substrate together with metallic contacts at each end of the resistor.
50
The unadjusted resistors are heat treated to give the required TCR and stability, then a precisely controlled laser trim process adjusts
10R - 1M5
25
0.25
150
PCF2010P
the resistance value.
15
Epoxy protection is applied and wrap-around terminations are added and plated with Nickel then Tin. Each
25R - 1M
resistor is measured immediately before packing into tape.
50
10R - 1M5
25
0.5
150
PCF2512P
15
25R - 1M
Terminations
* Standard values
supplied with 100% Sn
be available by request.
Standard
are
E24 or E96.
The chips
values
E24 or E96. Other values may
matte plated wrap-around
Limiting Element
0.26
0.12 ± 0.05
Voltage
0.2 ± 0.1
(V)
0.40
0.55
0.3 ± 0.2
25
0.4 ± 0.2
0.65
0.65
0.5 ± 0.2
0.50
50
0.45 ± 0.2
0.65
0.5 ± 0.2
0.65
0.5 ± 0.2
100
C
0.12 ± 0.05
0.2
0.5%
± 0.1
0.3 ± 0.2
0.4 ± 0.2
0.5 ± 0.2
0.5 ± 0.2
0.6 ± 0.2
0.6 ± 0.2
Wt
Ohmic Value Range *
1
0.25%
0.1%
3
6
25R-25K
A
9
49R9-12K
20
L
W
A
25
25R-332K
Wrap-around terminations
36
(3 faces)
55
10R - 1M
C
T
terminations suitable for soldering.
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
10.21
Precision Surface Mount Resistors
Precision Surface Mount Resistors
Precision Surface Mount Resistors
Resistors
Precision Thin Film Nichrome Chip
PCF Series
PCF Series
PCF Series
PCF Series
Physical Data
Physical Data
Physical Data
L
0201
0.58 0.05
0402
1.0
LL
0.1
0201
0.58 0.2
0603
1.6 0.05
0201
0.58 0.05
0402
1.0 0.1
0805
2.0 0.2
0402
1.0 0.1
0603
0.2
1.6 0.15
1206
3.05 0.2
0603
1.6
0805
2.0 0.2
1210
3.10 0.2
0805
2.0 0.15
1206
3.05 0.2
2010
4.9 0.15
1206
3.05 0.15
1210
3.10 0.2
2512
6.3 0.15
1210
3.10 0.15
2010
4.9 0.2
2010
4.9 0.2
2512
6.3 0.2
2512
Construction
6.3 0.2
Dimensions (mm) and Weight (mg)
W
T max
A
Dimensions (mm) and Weight (mg)
0.29
Dimensions (mm) and Weight (mg)
0.05
0.26
0.15 0.05
W
T max
A
0.5
W
0.05
0.25
A
0.15
T
0.55
max
0.29 0.2
0.26
0.15 0.05
0.8 0.05
0.65
0.35 0.25
0.29 0.05
0.26
0.15 0.05
0.5 0.05
0.55
0.25 0.25
1.25 0.2
0.65
0.4 0.15
0.5 0.05
0.55
0.25 0.15
0.8 0.15
0.2
0.65
0.35 0.25
1.55 0.2
0.65
0.35 0.25
0.8
0.65
0.35 0.25
1.25 0.2
0.65
0.4 0.25
2.5 0.2
0.65
0.55 0.25
1.25 0.25
0.65
0.4 0.25
1.55 0.25
0.15
0.65
0.35 0.25
2.4
0.65
0.55 0.3
1.55 0.15
0.65
0.35 0.25
2.5 0.25
0.65
0.55 0.45
3.1 0.25
0.25
0.65
0.7 0.25
2.5
0.65
0.55 0.25
2.4 0.25
0.65
0.55 0.3
2.4 0.25
0.65
0.55 0.3
3.1 0.25
0.65
0.7 0.45
3.1 0.25
0.65
0.7 0.45
C
0.12 0.05
C
0.2
C
0.15
0.12 0.2
0.3 0.05
0.12 0.05
0.2 0.15
0.3 0.2
0.2 0.15
0.3 0.2
0.42 0.2
0.3 0.2
0.3 0.2
0.4 0.3
0.3 0.2
0.42 0.3
0.6 0.2
0.42 0.2
0.4 0.3
0.6 0.3
0.4 0.3
0.6 0.3
0.6 0.3
0.6 0.3
0.6 0.3
Wt
0.14
Wt
0.54
Wt
0.14
1.8
0.14
0.54
4.7
0.54
1.8
9.0
1.8
4.7
10
4.7
9.0
24
9.0
10
38
10
24
24
38
38
C
CT
C
L
A
W
T
T
A
A
A
Wrap-around terminations
L
W
A
L
(3 faces)
W
A
Wrap-around terminations
Wrap-aroundfaces)
(3 terminations
(3 faces)
Performance Data - Standard Range
Performance Data - Standard Range
Performance Data Standard Range
Test Parameters
Conditions
Performance Data -- Standard Range
Test Parameters
Test Parameters
Load life
Humidity
Load life
Short term overload
Load life
Humidity
High temperature operation
Humidity
Short term overload
Temperature cycle
Short term overload
High temperature operation
Resistance to solder heat
High temperature operation
Temperature cycle
Solderability
Temperature cycle
Resistance to solder heat
Resistance to solder heat
Solderability
Solderability
A thin-film material is selectively deposited on a 96% alumina substrate together with metallic contacts at each end of the resistor.
Construction
The unadjusted
Construction
resistors are heat treated to give the required TCR and stability, then a precisely controlled laser trim process adjusts
A thin-film material selectively deposited on a and alumina substrate together with metallic contacts at each end of the resistor.
the resistance value.isselectively deposited on a 96%alumina substrate together with metallic contacts at each end of the resistor.
A thin-film material isEpoxy protection is applied96% wrap-around terminations are added and plated with Nickel then Tin. Each
The unadjusted resistors are heat before to give the required TCR and stability, then a precisely controlled laser trim process adjusts
treated
resistor is measured
into tape.
The unadjustedvalue.immediately treated packing and wrap-around terminations are a precisely controlled laser trim then Tin. Each
the resistance resistors are protection is to give the required TCR and stability, then added and plated with Nickel process adjusts
Epoxy heat
applied
the resistance value. Epoxy protection is applied and wrap-around terminations are added and plated with Nickel then Tin. Each
Terminations
resistor is measured immediately before packing into tape.
resistor is measured immediately before packing into tape.
The standard termination is 100% Sn matte plated wrap-around suitable for soldering. SnPb plated option is available for standard
Terminations
range PCF over
Terminations
the restricted range below.
The standard termination is 100% Sn matte plated wrap-around suitable for soldering. SnPb plated option is available for standard
The standard termination is 100% Sn matte plated wrap-around suitable for soldering. SnPb plated option is available for standard
range PCF over the restricted range below.
range PCF over the restricted range below.
Maximum change (+0.05R)
Performance Data - High Power Range
Performance
Data High
Conditions
Range
Performance
Data High Power Range
Power
Test Parameters
Performance Data --
-
High Power Range
Load life
Test Parameters
Humidity
Test Parameters
Load life
Short term overload
Load life
Humidity
High temperature operation
Humidity
Short term overload
Temperature cycle
Short term overload
High temperature operation
Resistance to solder heat
High temperature operation
Temperature cycle
Solderability
Temperature cycle
Resistance to solder heat
Resistance to solder heat
Solderability
Solderability
1000 hours rated load @ 70°C
Conditions
1000hrs
Conditions
- 95%RH
@ 40°C, 90
1000 hours rated load @ 70°C
6.25 x rated Power, orload LEV, for 5 sec
1000 hours rated 2 x @ 70°C
1000hrs @ 40°C, 90 - 95%RH
1000 40°C, 90 - 95%RH
1000hrs @ hours at 155°C
6.25 x rated Power, or 2 x LEV, for 5 sec
5 cycles -55°C, 150°C
6.25 x rated Power, or 2 x LEV, for 5 sec
1000 hours at 155°C
270°C, at sec
1000 hours 10 155°C
5 cycles -55°C, 150°C
235°C, 2 150°C
5 cycles -55°C,sec
270°C, 10 sec
270°C, 10 sec
235°C, 2 sec
235°C, 2 sec
≤0.05%
>0.05% tolerance
Chip size
Maximum change (+0.05R)
tolerance
Maximum change (+0.05R)
0603 to 2512
0603 to 2512
0201, 0402
≤0.05%
tolerance
>0.05% tolerance
Chip size
0.05%
0.25%
0.5%
1000 hours rated load @ 70°C
≤0.05%
tolerance
>0.05% tolerance
Chip size
0603 to 2512
0603 to 2512
0201, 0402
0603 to 2512
0603 to 2512
0.05%
0.3%
0.3%
1000 hours @ 40°C, 90 - 95%RH
0201, 0402
0.05%
0.25%
0.5%
1000 hours rated load @ 70°C
0.05%
0.5%
0.5%
6.25 x rated Power , or 2 x LEV, for 5 sec
0.05%
0.25%
0.5%
1000 hours rated load @ 70°C
0.05%
0.3%
0.3%
1000 hours @ 40°C, 90 - 95%RH
0.25%
0.25%
0.25%
1000 hours at 125°C
0.05%
0.3%
0.3%
1000 hours @ 40°C, 90 - 95%RH
0.05%
0.5%
0.5%
6.25 x rated Power , or 2 x LEV, for 5 sec
0.05%
0.1%
0.1%
5 Power , or 2 x LEV,
0.05%
0.5%
0.5%
6.25 x ratedcycles -55 C, 125°Cfor 5 sec
0.25%
0.25%
0.25%
1000 hours at 125°C
0.05%
0.2%
0.2%
270°C, at sec
0.25%
0.25%
0.25%
1000 hours 10 125°C
0.05%
0.1%
0.1%
5 cycles -55 C, 125°C
235°C, 2 125°C
95% minimum coverage
0.05%
0.1%
0.1%
5 cycles -55 C, sec
0.05%
0.2%
0.2%
270°C, 10 sec
0.05%
0.2%
0.2%
270°C, 10 sec
235°C, 2 sec
95% minimum coverage
235°C, 2 sec
95% minimum coverage
Conditions
Conditions
Maximum change (+0.05R)
0.5%
Maximum change (+0.05R)
Maximum change (+0.05R)
0.5%
0.5%
0.5%
0.5%
0.5%
0.5%
0.5%
0.5%
0.25%
0.5%
0.5%
0.2%
0.5%
0.25%
95% minimum coverage
0.25%
0.2%
0.2%
95% minimum coverage
95% minimum coverage
Performance Data - Passivated Range
Performance Data Passivated Range
Test Parameters
Conditions
Performance Data -- Passivated Range
Test Parameters
Load life
Test Parameters
Humidity
Load life
Short term overload
Load life
Humidity
High temperature operation
Humidity
Short term overload
Temperature cycle
Short term overload
High temperature operation
Resistance to solder heat
High temperature operation
Temperature cycle
Solderability
Temperature cycle
Resistance to solder heat
Resistance to solder heat
Solderability
Solderability
Maximum change (+0.05R)
0603 to 2512
0402
Maximum change (+0.05R)
Maximum change (+0.05R)
0.05%
0.25%
0603 to 2512
0402
0.05%
0.5%
0603 to 2512
0402
0.05%
0.25%
0.02%
0.1%
0.05%
0.25%
0.05%
0.5%
0.05%
0.5%
0.05%
0.5%
0.02%
0.1%
0.02%
0.1%
0.02%
0.1%
0.05%
0.5%
0.02%
0.1%
0.05%
0.5%
0.02%
0.1%
0.02% 95% minimum coverage0.1%
0.02%
0.1%
0.02%
0.1%
95% minimum coverage
95% minimum coverage
03.11
Conditions
Conditions
1000 hours rated load @ 70°C
1000hrs @ 40°C, 90 - 95%RH
1000 hours rated load @ 70°C
6.25 x rated Power, orload LEV, for 5 sec
1000 hours rated 2 x @ 70°C
1000hrs @ 40°C, 90 - 95%RH
1000 40°C, 90 - 95%RH
1000hrs @ hours at 125°C
6.25 x rated Power, or 2 x LEV, for 5 sec
5 cycles -55 2 125°C
6.25 x rated Power, orC, x LEV, for 5 sec
1000 hours at 125°C
270°C, at sec
1000 hours 10 125°C
5 cycles -55 C, 125°C
235°C, 2 125°C
5 cycles -55 C, sec
270°C, 10 sec
270°C, 10 sec
235°C, 2 sec
235°C, 2 sec
© 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
General Note
Components Limited
Bedlington Northumberland NE22 7AA, UK
© Welwyn
© 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
TT Electronics reserves the right to make changes in product specification without notice or liability.
Telephone: +44 (0) 1670 822181 Facsimile: +44 (0) 1670 829465 Email: info@welwyn-tt.com Website: www.welwyn-tt.com
All information is subject to TT Electronics’ own data and is considered accurate at time of going to print.
BI Technologies IRC Welwyn
03.11
03.11
www.ttelectronics.com/resistors
© TT Electronics plc
10.21
Performance Data - High Power Range
Test Parameters
Conditions
Maximum change (+0.05R)
0.5%
0.5%
0.5%
0.5%
0.25%
0.2%
95% minimum coverage
Load life
1000 hours rated load @
Precision Thin Film Nichrome Chip
70°C
Resistors
Humidity
1000hrs @ 40°C, 90 - 95%RH
PCF Series
Short term overload
High temperature operation
Temperature cycle
Resistance to solder heat
Solderability
6.25 x rated Power, or 2 x LEV, for 5 sec
1000 hours at 155°C
5 cycles -55°C, 150°C
270°C, 10 sec
235°C, 2 sec
Performance Data - Passivated Range
Test Parameters
Load life
Humidity
Short term overload
High temperature operation
Temperature cycle
Resistance to solder heat
Solderability
Conditions
1000 hours rated load @ 70°C
1000hrs @ 40°C, 90 - 95%RH
6.25 x rated Power, or 2 x LEV, for 5 sec
1000 hours at 125°C
5 cycles -55 C, 125°C
270°C, 10 sec
235°C,
0
sec
100%
2
100%
Maximum change (+0.05R)
0603 to 2512
0.05%
0.05%
0.02%
0.05%
0.02%
0.02%
0402
0.25%
0.5%
0.1%
0.5%
0.1%
0.1%
95% minimum coverage
70
100%
100%
125
35%
0%
Derating Curve
155
0%
© 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
Precision Surface Mount Resistors
PCF Series
100%
80%
60%
40%
20%
0%
0
50
Temperature Derating
03.11
Proportion of Pr
Standard &
Passivated
High Power
Range
Derating Curve
100
150
Ambient Temperature (°C)
Solderability
The terminations have an electroplated nickel barrier and tin coating. This ensures excellent 'leach' resistance properties and
solderability.
Packaging
PCF Resistors are supplied taped and reeled as as per IEC 286-3. Sizes 2010 and 2512 are in embossed plastic tape.
Smaller sizes are in paper tape.
Application Notes
PCF resistors are ideally suited for handling by automatic methods due to their rectangular shape and the small dimensional
tolerances. Electrical connection to a ceramic substrate or to a printed circuit board can be made by reflow or wave soldering of
wrap-around terminations.
Wrap-around terminations provide good leach properties and ensure reliable contact. Due to the robust construction, the PCF 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 wire-leaded components applied on the other side.
PCF resistors themselves can operate at a maximum temperature of 125°C (see performance above) (155°C for High Power grades).
For soldered resistors, the joint temperature should not exceed 110°C. This condition is met when the stated power levels at 70°C
are used.
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
10.21
