Precision Thin Film
Precision Surface
Nichrome Chip Resistors
Mount Resistors
PCF Series
·
PCF Series
thin film technology
Precision
·
Precision
ohmic range
technology
Extended
metal film
1R - 3M
·
Extended
to ±0.01% and 5ppm/°C
Precision
ohmic range 1R - 3M
·
Precision to ±0.01%
superior humidity performance
Passivated range for
and 5ppm/°C
·
TCR grades 50, 25, 15, 10, 5ppm/°C
Load life stability and humidity to 0.05%
·
Passivated range for superior humidity performance
RoHS compliant Pb-free terminations
Load life stability and humidity to 0.05%
Electrical Data - Standard Range
Type
PCF0201
TCR
(ppm/ºC)
50
25
50
25
15
10
5
50
25
15
10
5
50
25
15
10
5
50
25
15
10
5
50
25
15
10
5
50
25
15
10
5
50
25
15
10
5
Power
(W)
0.031
Limiting Element
Voltage (V)
1% & 0.5%
15
49R9-33K
49R9-5K
10R-205K
0.063
25
-
2R-1M
0.063
50
-
1R-2M
0.1
100
-
1R–2M5
0.125
150
-
1R–2M5
0.2
150
-
1R–3M
0.25
150
-
1R–3M
0.5
150
-
4R7-1M
4R7-332K
4R7-332K
24R9-15K
4R7-2M
4R7-511K
4R7-511K
24R9-30K
2
4R7-2M5
4R7-511K
4R7-1M
24R9-50K
2
4R7-2M5
4R7-1M
4R7-1M
24R9-50K
2
4R7-3M
4R7-1M
4R7-1M
24R9-100K
4R7-3M
4R7-1M
4R7-1M
24R9-100K
24R9-500K
-
24R9-500K
24R9-500K
24R9-50K
-
24R9-500K
24R9-50K
-
24R9-200K
24R9-30K
-
-
24R9-100K
49R9-33K
49R9-12K
49R9-5K
-
Ohmic Value Range
1
0.25%
0.1%
-
-
0.05%
0.01%
PCF0402
PCF0603
PCF0805
PCF1206
PCF1210
PCF2010
PCF2512
Note 1: Standard values E24 or E96. Other values may be available by request.
Note 2: Higher values available on request.
General Note
General Note
TT electronics reserves the right
the
make
to make changes in
specification without notice or
notice or liability.
Welwyn Components reserves
to
right
changes in product
product specification without
liability.
All information is subject to Welwyn’s own data and is considered accurate at time of going to print.
All information is subject to TT electronics’ own data and is considered accurate at time of going to print.
A subsidiary of
www.bitechnologies.com www.irctt.com www.welwyn-tt.com
TT electronics plc
03.11
1.14
© Welwyn Components Limited
Bedlington Northumberland NE22 7AA, UK
© TT electronics
1670 822181 Facsimile: +44 (0) 1670 829465 Email: info@welwyn-tt.com Website: www.welwyn-tt.com
plc
Telephone: +44 (0)
Precision Surface
Precision Thin Film
Mount Resistors
Nichrome Chip Resistors
PCF Series
PCF Series
Electrical Data - High Power Range
Electrical Data - High Power Range
Type
Type
TCR
(ppm/ºC)
TCR
PCF0603H
PCF0603H
PCF0805H
PCF0805H
PCF1206H
PCF1206H
PCF1210H
PCF1210H
(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
25
10
15
5
Power
Power
(W)
(W)
0.1
0.1
Limiting Element
Limiting
Voltage (V)
Element
Voltage (V)
75
75
0.5%
0.5%
Ohmic Value Range
Ohmic Value Range *
0.05%
0.25%
0.1%
0.25%
4R7-1M
0.01%
0.01%
0.1%
0.05%
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
0.25
200
200
24R9-500K
24R9-500K
4R7-1M
24R9-50K
24R9-50K
4R7-1M
4R7-1M
0.33
0.33
200
200
24R9-500K
24R9-500K
Electrical Data -
0.33
Passivated Range
200
PCF2010H
Type
PCF2512H
PCF0402P
10
5
50
25
15
10
TCR
5
(ppm/ºC)
50
25
50
15
25
10
24R9-50K
24R9-50K
4R7-1M
24R9-500K
Power
(W)
0.75
Limiting Element
Voltage (V)
200
Ohmic Value Range *
0.25%
24R9-50K
0.5%
1R-2K
0.1%
0.05%
0.01%
24R9-2K
* Standard values E24 or
50
Other values may be available by request.
E96.
15
0.063
25
4R7-2K
25R-25K
49R9-12K
25R-332K
25R-100K
Electrical Data - Extended High Power Range
10R-800K
PCF0805P
0.1
Type
PCF1206P
PCF0603X
PCF2010P
PCF0805X
PCF1206X
PCF2512P
PCF2512X
Power
(W)
0.125
0.166
0.25
0.333
0.5
1
PCF0603P
25
15
50
25
15
TCR
50
(ppm/ºC)
25
15
50
50
25
25
50
15
25
50
50
25
25
15
50
25
0.063
50
100
Limiting
Element
Voltage
150
(V)
100
150
200
150
200
Ohmic
25R-200K
Value Range *
0.5%
0.25%
10R-1M
0.1%
25R-500K
0.05%
0.01%
0.25
150
10R-332K
10R-1M
25R-500K
10R-500K
10R-1M
10R-1M
1R-100R
4R7-100R
25R-500K
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
(W)
1.0 ±
(ppm/ºC)
0.5 ± 0.05
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
* Standard values E24 or E96. Other values may be available by request.
Limiting Element
0.26
0.12 ± 0.05
(V)
0.40
Voltage
0.2 ± 0.1
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
25R-332K
25
Wrap-around terminations
36
25R-100K
(3 faces)
55
10R-800K
C
T
15
25R-200K
50
10R-1M
Construction
25
0.125
150
PCF1206P
15
25R-500K
A thin-film material is selectively deposited on a 96% alumina substrate together with metallic contacts at each end of the resistor.
50
are heat treated to give the required TCR and stability, then a precisely controlled laser trim process adjusts
The unadjusted resistors
10R-1M
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-500K
resistor is measured immediately before packing into tape.
50
10R-1M
25
0.5
150
PCF2512P
15
10R-1M
Terminations
* Standard values
supplied with 100% Sn
be available by request.
The chips are
E24 or E96. Other values may
matte plated wrap-around
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.
www.bitechnologies.com www.irctt.com www.welwyn-tt.com
© TT electronics plc
1.14
Precision Surface Mount Resistors
Precision Thin Film
Nichrome Chip Resistors
PCF Series
PCF Series
Physical Data
L
0201
0402
0603
0805
1206
1210
2010
2512
0.58 0.05
1.0 0.05
1.6 0.2
2.0 0.2
3.05 0.15
3.10 0.15
4.9 0.2
6.3 0.2
Dimensions (mm) and Weight
W
T max
A
0.29 0.05
0.26
0.15 0.05
0.5 0.05
0.40
0.2 0.1
0.8 0.2
0.55
0.3 0.2
1.25 0.2
0.65
0.4 0.25
1.55 0.15
0.65
0.35 0.25
2.4 0.15
0.50
0.55 0.25
2.4 0.2
0.65
0.5 0.25
3.1 0.2
0.65
0.5 0.25
C
0.12
0.2
0.3
0.3
0.42
0.4
0.6
0.6
0.05
0.1
0.2
0.2
0.2
0.2
0.3
0.3
Wt
1
3
6
9
20
25
36
55
C
T
A
L
A
W
Wrap-around terminations
(3 faces)
Construction
A thin-film material is selectively deposited on a 96% alumina substrate together with metallic contacts at each end of the resistor.
The unadjusted resistors are heat treated to give the required TCR and stability, then a precisely controlled laser trim process adjusts
the resistance value. Epoxy protection is applied and wrap-around terminations are added and plated with Nickel then Tin. Each
resistor is measured immediately before packing into tape.
Terminations
The chips are supplied with 100% Sn matte plated wrap-around terminations suitable for soldering.
Performance Data - Standard Range
Test Parameters
Conditions
Maximum change (+0.05R)
>0.05% tolerance
0603 to 2512
Load life
Humidity
Short term overload
High temperature operation
Temperature cycle
Resistance to solder heat
Solderability
1000 hours rated load @ 70°C
1000 hours @ 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, 2 sec
0.25%
0.3%
0.5%
0.25%
0.1%
0.2%
Chip size
0201, 0402
≤0.05%
tolerance
0603 to 2512
0.05%
0.05%
0.05%
0.25%
0.05%
0.05%
0.5%
0.3%
0.5%
0.25%
0.1%
0.2%
95% minimum coverage
Performance Data - High Power Range/Extended High Power 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 155°C
5 cycles -55°C, 150°C
270°C, 10 sec
235°C, 2 sec
Maximum change (+0.05R)
0.5%
0.5%
0.5%
0.5%
0.25%
0.2%
95% minimum coverage
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, 2 sec
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
General Note
© Welwyn Components Limited
Bedlington Northumberland NE22 7AA, UK
03.11
TT
Telephone:
reserves
1670 822181 Facsimile: +44 (0) 1670 829465
without
info@welwyn-tt.com Website: www.welwyn-tt.com
electronics
+44 (0)
the right to make changes in product specification
Email:
notice or liability.
All information is subject to TT electronics’ own data and is considered accurate at time of going to print.
www.bitechnologies.com www.irctt.com www.welwyn-tt.com
© TT electronics plc
1.14
Precision Thin Film
Precision Surface Mount Resistors
Nichrome Chip Resistors
PCF Series
PCF Series
Derating Curve
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
© Welwyn Components Limited
Bedlington Northumberland NE22 7AA, UK
TT electronics
+44 (0) 1670 822181 Facsimile: +44 (0) 1670 829465 Email: info@welwyn-tt.com Website: www.welwyn-tt.com
Telephone:
reserves the right to make changes in product specification without notice or liability.
03.11
All information is subject to TT electronics’ own data and is considered accurate at time of going to print.
www.bitechnologies.com www.irctt.com www.welwyn-tt.com
© TT electronics plc
1.14
Precision Thin Film
Nichrome Chip Resistors
PCF Series
Ordering Procedure
This product has two valid part numbers:
European (Welwyn) Part Number: PCF0603-11-1K54BI
(0603, standard, 15ppm/°C, 1.54 kilohm ±0.1%, Pb-free)
P
C
1
1
PCF
2
F
0
6
2
3
Range
0
3
3
-
1
4
4
TCR
1
-
1
K
5
5
Value
5
4
B
6
I
7
6
Tolerance
7
Termination & Packing
Type Size
0201
Omit for
Standard
0402
0603 H = High Power
0805 X = Extended
1206 P = Passivated
1210
2010
2512
-13 = ±5ppm/°C E24 = 3/4 characters L = ±0.01%
Pb-free only
-12 = ±10ppm/°C E96 = 3/4 characters W = ±0.05%
I = Standard Packing
-11 = ±15ppm/°C
B = ±0.1%
0201, 0402 10,000/reel
R = ohms
K = kilohms
R = ±25ppm/°C
C = ±0.25% 0603 to 1210 5000/reel
M = megohms
-02 = ±50ppm/°C
D = ±0.5%
2010, 2512
4000/reel
F = ±1%
T1*
0201 to 1206,
1000/reel
2010, 2512
* Non-standard; enquire to confirm
availability
USA (IRC) Part Number*: PCF-W0603LF-11-1541-B-P-LT
(0603, standard, 15ppm/°C, 1.54 kilohm ±0.1%, Pb-free)
P
C
1
1
Type
PCF
2
3
F
-
W
0
6
2
4
TCR
0
3
L
3
F
-
1
4
5
Value
6
Tolerance
1
-
1
5
5
7
Tape
4
1
-
B
6
-
P
7
-
L
8
8
Packing
T
Model Termination
W0201 LF = Pb-free
W0402 (100%Sn)
W0603
W0805
W1206
W1210
W2010
W2512
13 = ±5ppm/°C 3 digits + multiplier
12 = ±10ppm/°C
R = ohms for
values <100 ohms
11 = ±15ppm/°C
03 = ±25ppm/°C
02 = ±50ppm/°C
T = ±0.01%
LT = Tape & Reel
P = Paper
(0201 to 1210) 0201, 0402 10,000/reel
A = ±0.05%
B = ±0.1% E = Embossed 0603 to 1210 5000/reel
C = ±0.25% (2010, 2512)
2010, 2512
4000/reel
D = ±0.5%
F = ±1%
* Applies only to Standard Range parts.
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.
www.bitechnologies.com www.irctt.com www.welwyn-tt.com
© TT electronics plc
1.14
PCB Design
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