Precision Surface
Mount Resistors
PCF Series
Precision metal film technology
Extended ohmic range 1R - 3M
Precision to 0.01% and 5ppm/C
TCR grades 50, 25, 15, 10, 5ppm/C
Passivated range for superior humidity performance
Load life stability and humidity to 0.05%
Electrical Data - Standard Range
Ohmic Value Range*
TCR Power Limiting Element
Type
(ppm/C) (W) Voltage (V) 0.5% 0.25% 0.1% 0.05% 0.01%
1
50 49R9-33K
PCF0201 -
0.031 15
1
25 49R9-5K
50
10R-205K -
25
PCF0402 15 0.063 25 49R9-33K
10 - 49R9-12K
5 49R9-5K
50
2R-1M 4R7-1M -
25
4R7-332K
PCF0603 15 0.063 50
4R7-332K 24R9-100K
10 -
5 24R9-15K
50
1R-2M 4R7-2M -
25
4R7-511K
PCF0805 15 0.1 100
4R7-511K 24R9-200K
10 -
2
5 24R9-30K 24R9-30K
50
1R2M5 4R7-2M5 -
25
4R7-511K
PCF1206 15 0.125 150
4R7-1M 24R9-500K
10 -
2
5 24R9-50K 24R9-50K
50
1R2M5 4R7-2M5 -
25
4R7-1M
PCF1210 15 0.2 150
4R7-1M 24R9-500K
10 -
2
5 24R9-50K 24R9-50K
50
1R3M 4R7-3M -
25
4R7-1M
PCF2010 15 0.25 150
4R7-1M 24R9-500K
10 -
5 24R9-100K
50
1R3M 4R7-3M -
25
4R7-1M
PCF2512 15 0.5 150
4R7-1M 24R9-500K
10 -
5 24R9-100K
* Standard values E24 or E96. Other values may be available by request.
Note 1: PCF0201 also available in 1% tolerance. Note 2: Higher values available on request.
General Note
Welwyn Components reserves the right to make changes in product specification without notice or liability.
All information is subject to Welwyns own data and is considered accurate at time of going to print. A subsidiary of
TT electronics plc
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
03.11Precision Surface Mount Resistors
PCF Series
Electrical Data - High Power Range
Electrical Data - High Power Range
Ohmic Value Range
TCR Power Limiting Element
Type Ohmic Value Range *
Power Limiting
(ppm/C) (W) Voltage (V) 0.5% 0.25% 0.1% 0.05% 0.01%
TCR
Type (W) Element
0.5% 0.25% 0.1% 0.05% 0.01%
(ppm/C)50
Voltage (V)
25
4R7-332K 24R9-100K
50
PCF0603H 0.1 75
15
4R7-1M
25
10
4R7-332K 24R9-100K
15
PCF0603H 0.1 75
5 24R9-15K
4R7-332K
10
50
525 4R7-1M 24R9-15K 4R7-511K
24R9-200K
PCF0805H 15 0.125 150
50
1R-1M 4R71M
10 4R7-511K
25
4R7-511K 24R9-200K
5 24R9-30K
PCF0805H 15 0.125 150 4R7-1M
50
10 4R7-511K
25
5 24R9-30K
4R7-1M 24R9-500K
PCF1206H 15 0.25 200
50
10
25
4R7-1M 24R9-500K
5 24R9-50K
15
PCF1206H 0.25 200
50
10
25
5 24R9-50K
4R7-1M 24R9-500K
5015
PCF1210H 0.33 200
25
10
4R7-1M 24R9-500K
15
PCF1210H 0.33 200
5 24R9-50K
10
5 24R9-50K
50
25
Electrical Data - Passivated Range
4R7-1M 24R9-500K
PCF2010H 15 0.33 200
Ohmic Value Range *
10
TCR Power Limiting Element
5
24R9-50K
Type
(ppm/C) (W) Voltage (V) 0.5% 0.25% 0.1% 0.05% 0.01%
50
25
50
PCF2512H 0.75 200 1R-2K 4R7-2K 24R9-2K
25R-25K
15
PCF0402P 25 0.063 25
10
15 49R9-12K
* Standard values E24 or E96. Other values may be available by request.
50
25R-332K
PCF0603P 25 0.063 50
15 25R-100K
Electrical Data - Extended High Power Range
50
10R-800K
PCF0805P 25 0.1 100
Limiting
Ohmic Value Range *
15 25R-200K
TCR Power Element
50
Type
10R-1M
(ppm/C) (W) Voltage
25
PCF1206P 0.125 150 0.5% 0.25% 0.1% 0.05% 0.01%
(V)
15 25R-500K
50
50
PCF0603X 0.166 100 10R-332K
10R-1M
25
PCF2010P 25 0.25 150
50
15 0.25 150 10R-500K25R-500K
PCF0805X
25
50
50 10R-1M
PCF1206XPCF2512P 25 0.3330.5 200150 10R-1M
25
15 25R-500K
50
PCF2512X
1 200 1R-100R 4R7-100R
25
* Standard values E24 or E96. Other values may be available by request.
Physical Data
Dimensions (mm) & Weight (mg)
Electrical Data - Passivated Range
L Tmax A C Wt
W
C
Ohmic Value Range *
TCR Power Limiting Element
1
0201 0.6 0.05 0.3 0.05 0.26 0.12 0.05 0.12 0.05
Type
(ppm/C) (W) Voltage (V) 0.5% 0.25% 0.1% 0.05% 0.01%
1.0 0.05 0.40 0.2 0.1 0.2 0.1 3
0402 0.5 0.05
T
50
1.6 0.2 0.8 0.2 0.55 0.3 0.2 0.3 0.2 6
0603
25R-25K
A
PCF0402P 25 0.063 25
2.0 0.2 0.65 0.4 0.2 0.4 0.2 9
0805 1.25 0.2
15
49R9-12K
3.2 0.2 0.65 0.5 0.2 0.5 0.2 20 L
1206 1.6 0.2 W
50
A
25R-332K
3.2 0.2 25
1210 25 2.6 0.2 0.50 0.45 0.2 0.5 0.2
PCF0603P 0.063 50
Wrap-around terminations
15 25R-100K
4.9 0.2 0.65 0.5 0.2 0.6 0.2 36
2010 2.4 0.2
(3 faces)
50
6.3 0.2 3.1 0.2 0.65 0.5 0.2 0.6 0.2 55 10R-800K
2512
PCF0805P 25 0.1 100
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
The unadjusted resistors are heat treated to give the required TCR and stability, then a precisely c10R-1Montrolled laser trim process adjusts
PCF2010P 25 0.25 150
the resistance value. Epoxy protection is applied and wrap-around terminations are added and plated with Nickel then Tin. Each
15 25R-500K
resistor is measured immediately befo50 re packing into tape.
10R-1M
PCF2512P 25 0.5 150
15 10R-1M
Terminations
* Standard values E24 or E96. Other values may be available by request.
The chips are supplied with 100% Sn matte plated wrap-around terminations suitable for soldering.
Welwyn Components Limited Bedlington Northumberland NE22 7AA, UK 03.11
Telephone: +44 (0) 1670 822181 Facsimile: +44 (0) 1670 829465 Email: info@welwyn-tt.com Website: www.welwyn-tt.com