Resistors
Pulse Withstanding
Pulse Withstanding
Pulse Withstanding
High Pulse Withstanding Chip Resistors
Chip Resistors
Chip Resistors
Chip Resistors
HPWC Series
PWC Series
PWC Series
PWC Series
Excellent pulse withstand performance
Excellent pulse withstand performance
Excellent pulse withstand performance
Excellent pulse withstand performance
Improved working voltage
Improved working voltage
Improved working
Improved working voltage
Improved power rating
voltage
Improved power rating
Improved power rating
Improved power rating
Anti-sulphur version available
Standard chip sizes (0805 to 2512)
Standard chip sizes (0805 2512)
Standard chip sizes (0805 toto 2512)
Custom designs available
Custom designs available
Custom designs available
Welwyn Components
Welwyn Components
Welwyn Components
All Pb-free parts comply with EU Directive 2011/65/EU amended by (EU) 2015/863 (RoHS3)
Electrical Data
Electrical Data
Electrical Data
Size
Size
Power @70°C
Power @70°C
Power @70°C
Power @70°C
Resistance
range
Resistance
range
Tolerance
Tolerance
Tolerance
Tolerance
LEV
LEV
LEVLEV
TCR
Size
Size
Resistance range
Resistance range
TCR
Pad
Pad / trace area *
Pad
/ trace
area *
*
/ trace
area
Values
Values
Values
Values
Pulse Capability
Pulse Capability
Pulse Capability
Pulse Capability
Operating temperature °C
°C
Operating temperature
Operating temperature
°C
Thermal Impedance
°C/W
Thermal
Impedance
Impedance
°C/W
°C/W
Thermal Impedance
Thermal
°C/W
2
Pad / trace area *
TCR
TCR
Operating temperature
ppm/°C
HPWC0805
PWC0603
PWC0603
PWC0603
W
0.25
0.125
W
0.125
W
0.125
ohms
ohms
W
ohms
ohms
%
%
% %
75
V
V
150
V V
75 75
ppm/°C
ppm/°C
ppm/°C
°C
mm
302
220
302302
30
30
30
40
HPWC2010
PWC1206
PWC2010
PWC0805
HPWC1206
PWC1206
PWC2010
PWC0805
PWC1206
PWC2010
PWC0805
1
1
0.25
0.33
0.33
0.5
0.5
0.75
0.75
0.25
0.33
0.75
0.33
0.5 0.5
0.75
1 1
0.25
1R0
to 10M
1R0
to 1M0
10R to 1M:1R01R010M 1, 5
0.5, to to 10M
All values:
150
150150
to to200 All All values:
10R10R1M:1M: 0.5, values: 1, 51, 5 400
0.5,
200
400
400
200200
<10R:200
≥10R:100
400
HPWC2512
PWC2512
1.5 1.5
PWC2512
1.5
1.5
2
2
PWC2512
2 2
All values: 5, 10, 20
500
500
<10R:200 ≥ 10R:100
500500
mm
2
mm
2
mm
2
220
160
220220
40
70
55
80
80 80
70
70 70
55
55 55
145
145
125
60
250
100
125
60
60 60
250
40
50
40 E24 or E96 preferred - other values to special order 250250
100
100
50 50
125125
100
E24 or E96 preferred - other values to special order
or – preferred - other values to to special order
SeeE24E24E96E96application note available on request
graphsor full preferred - other valuesspecial order
graphs – full application note available on on request
SeeSee graphs – full application note available request
160
145
160160
50
-55 to +155
to +155
-55
<10R:200
≥10R:100
<10R:200
≥10R:100
-55 to +155
-55
145 to +155
80
500
500
500
40
40
40
500
40
See graphs
*Recommended minimum pad & adjacent trace area for each termination for rated power dissipation on FR4 PCB
*Recommended minimum & adjacent trace area for each termination for rated power dissipation on on PCB
*Recommended minimum padpad & adjacent trace area for each termination for rated power dissipation FR4FR4 PCB
Physical Data
Physical Data
Physical Data
0603
0603
0805
0603
0805
0805
1206
0805
1206
1206
1206
2010
2010
2010
2010
2512
2512
2512
2512
Dimensions (mm) & weight (mg)
Dimensions (mm) & weight (mg)
Dimensions (mm) & weight (mg)
L
W
W
L
L
L
W
W
1.6±0.1
0.8±0.1
1.6±0.1
1.25±0.15
0.8±0.1
1.6±0.1
2.0±0.15
0.8±0.1
2.0±0.15 1.25±0.15
2.0±0.15 1.25±0.15
2.0±0.15 1.25±0.15
3.2±0.2
1.6±0.2
1.6±0.2
3.2±0.2
3.2±0.2
1.6±0.2
3.2±0.2
5.1±0.3
1.6±0.2
2.5±0.2
5.1±0.3
2.5±0.2
5.1±0.3 3.2±0.2
2.5±0.2
5.1±0.3
6.5±0.3
2.5±0.2
3.2±0.2
6.5±0.3
6.5±0.3 3.2±0.2
3.2±0.2
6.5±0.3
Dimensions (mm) & weight (mg)
T max
T max
T
T max
0.55max
0.55
0.55
0.6
0.6
0.6
0.6
0.7
0.7
0.7
0.7
0.8
0.8
0.8
0.8
0.80.8
0.80.8
A
B min
A
B min
A A
B0.6
B min
min
0.3±0.15
0.3±0.15 0.60.6
0.3±0.15
0.3±0.15
0.9
0.9
0.3±0.15
0.3±0.15 0.90.9
0.3±0.15
0.4±0.2
1.7
1.7
0.4±0.2
0.4±0.2
0.4±0.2
0.6±0.3
1.71.7
0.6±0.3
3.0
3.0
0.6±0.3
0.6±0.3
0.6±0.3
3.03.0
0.6±0.3
4.4
4.4
0.6±0.3
0.6±0.3
4.44.4
C
C C
C
0.3±0.15
0.3±0.15
0.3±0.15
0.3±0.1
0.3±0.1
0.3±0.1
0.3±0.1
0.4±0.15
0.4±0.15
0.4±0.15
0.4±0.15
0.6±0.25
0.6±0.25
0.6±0.25
0.6±0.25
0.6±0.25
0.6±0.25
0.6±0.25
0.6±0.25
2.22.2
4.7
4.7
4.74.7
8.5
8.5
8.58.5
36
36
36 36
55
55
55 55
Wt.
Wt.
Wt.
2.2Wt.
C
C
A
B
A A L
W
A
B B
L L
A
W W
A
Wrap-around terminations
(3 faces)
Wrap-around terminations
Wrap-around terminations
(3 faces)
(3 faces)
T
T
C
T
Thick film resistor material, overglaze and organic protection
areThick film resistor material,alumina substrate. Wrap-around
screen printed on a 96% overglaze and organic protection
areare screen have an on96% alumina substrate. Wrap-around
screen printed on a a 96% alumina barrier and solder
terminations printed electroplated nickelsubstrate. Wrap-around
terminations have electroplated nickel barrier and solder
terminations ensures excellent ‘leach’ resistance properties
coating, this have an an electroplated nickel barrier and solder
coating, this ensures excellent ‘leach’ resistance properties
coating, this ensures excellent ‘leach’ resistance properties
and solderability.
and solderability.
and solderability.
Note that anti-sulphur version parts below 5R are
Note that anti-sulphur version the below are
Note that anti-sulphur version parts below 5R element
produced in flip-chip format withpartsresistor 5R are on
produced in
produced in flip-chip format with the resistor element on on
the underside. flip-chip format with the resistor element
the underside.
the underside.
Construction
Construction
Construction
Thick film resistor material, overglaze and organic protection
Components not code and Reels marked with type,
Components are datemarked. Reels areare
value, tolerance,are not marked.quantity. marked with type,
value, tolerance, date code and quantity.
value, tolerance, date code and quantity.
Marking
Marking
Marking
Components are not marked. Reels are marked with type,
Solvent Resistance
Solvent Resistance
Solvent
protection is resistant to all normal industrial
The body
Resistance
The body protection is for printed normal
The body protection is resistant to all all normal industrial
cleaning solvents suitable resistant to circuits. industrial
cleaning solvents suitable printed circuits.
cleaning solvents suitable forfor printed circuits.
General Note
General Note
Welwyn Components reserves the right to make changes in product specification
or liability.
General Note
General Note
TT Electronics reserves the right to make changes in product specification without notice
without notice or liability.
BI Technologies IRC Welwyn
A subsidiary of
TTA subsidiaryplc
electronics of
A subsidiary
www.ttelectronics.com/resistors
of
TT electronics
TT electronics plc plc
07. 08
07. 07. 08
08
06.20
All information is subject reserves the right data
Welwyn Components
to make is considered accurate at time of going to print.
Welwyn Components
to
to Welwyn’s own make and changes in product specification without notice or liability.
All information is subject
reserves the right
own data
changes in product specification without
to print.
liability.
TT Electronics’
to
and is considered accurate at time of going
notice or
All information is subject to Welwyn’s own data is considered accurate at at time of going to print.
All information is subject to Welwyn’s own data andand is considered accuratetime of going to print.
© Welwyn Components Limited
· Bedlington, Northumberland NE22 7AA, UK
© TT Electronics
Components Limited
· Bedlington, Northumberland NE22 7AA, UK · Website: www.welwyn-tt.com
Telephone: +44 (0)
plc
822181 · Facsimile: +44 (0) 1670 829465 · Email: info@welwyn-tt.com
© Welwyn
1670
© Welwyn Components Limited
· Bedlington, Northumberland NE22 7AA, UK
Telephone: (0) (0) 1670 822181 · Facsimile: (0) (0) 1670 829465 · Email: info@welwyn-tt.com · Website: www.welwyn-tt.com
Telephone: +44+44 1670 822181 · Facsimile: +44+44 1670 829465 · Email: info@welwyn-tt.com · Website: www.welwyn-tt.com
37
Pulse Withstanding
High Pulse Withstanding Chip Resistors
HPWC Series
PWC Series
Chip Resistors
Welwyn Components
Performance Data
Size
Load at rated power: 1000 hours at 70°C
Shelf life test: 12 months at room temperature
Derating from rated power at 70°C
Overload: 6.25 x rated power for 2 seconds
Dry heat: 1000 hours at 155°C
Long term damp heat
Temperature rapid change
Resistance to solder heat
Anti-sulphur grade (AS)
ASTM-B-809 (1000 hours, 50°C, 91-93% RH)
EIA-977 (750 hours, 105°C)
Sulphur-resistant grade (SR) ASTM-B-809 (1000 hours, 50°C, 91-93% RH)
Modified ASTM-B-809 (1000 hours, 105°C, 85% RH)
ΔR%
ΔR%
ΔR%
ΔR%
ΔR%
ΔR%
ΔR%
ΔR%
ΔR%
volts
1
1
1
0.25
0.25
0.25
0.25
0.25
1
500
ΔR%
ΔR%
Maximum
1
0.1
Zero at 155°C
0.1
0.2
0.25
0.05
0.05
0.05
0.05
0.05
0.25
Typical
0.25
0.02
Pulse Performance Data
Voltage proof
Note: A 0.01 ohm addition to be added to the performance of all resistors <10 ohms.
Pulse Performance Data
Lightning Surge
HPWC resistors are tested in accordance with IEC 60 115-1 using both 1.2/50µs and 10/700µs pulse shapes. The limit of acceptance is a shift in
resistance of less than 1% from the initial value.
Lightning Surge
Lightning surge resistors are tested in
accordance with IEC 60 115-1 using
both 1.2/50µs and 10/700µs pulse shapes.
10 pulses are applied. The limit of
acceptance is a shift in resistance of less
than 1% from the initial value.
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
07. 08
06.20
High Pulse Withstanding Chip Resistors
HPWC Series
Single Pulse
The single pulse graph is the result of 50 impulses of rectangular shape applied at one minute intervals. The limit of acceptance is a shift in
resistance of less than 1% from the initial value.
Continuous Pulse
The continuous pulse graph was obtained by applying repetitive rectangular pulses where the pulse period was adjusted so that the average
power dissipated in the resistor was equal to its rated power at 70°C. The limit of acceptance is a shift in resistance of less than 1% from the initial value.
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
06.20
Pulse
Pulse Withstanding Chip Resistors
High
Withstanding
Chip Resistors
HPWC Series
PWC Series
Welwyn Components
Thermal Performance Data
% of Rated Power
Temperature Derating Curve
125
100
75
50
25
0
-15
70
Ambient Temperature /°C
155
Packaging
0805 and 1206 resistors are supplied on 8mm carrier tape and 2010 and 2512 resistors are supplied on 12mm carrier tape, all on 7 inch reels as per
IEC 286-3.
Application Note
Ordering Procedure
Ordering Procedure
Ordering Procedure
Ordering Procedure
This product has two valid part numbers:
product product has two numbers:
product has two part part numbers:
This ThisThishas two validvalidvalid part numbers:
HPWC resistors themselves can operate at a maximum temperature of 155°C. For soldered resistors, the joint temperature should not exceed 110°C. This
condition is met when the stated power levels at 70°C and recommended pad and trace areas are used. Pad and trace area is defined as the total area of
the solder pad plus all copper trace within two squares of the edge of the solder pad. Allowance should be made if smaller areas of copper are used.
erudecorP gniredrO
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HPWC2512-2K0JT18
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(2512, kilohms kilohms ±5%,
or
Number: PWC2512-2K0JI
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(Welwyn)
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Number: PWC2512-2K0JI
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kilohms ±5%, Pb-free)
2
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1 1 16 1
6
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Ordering Procedure
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1 6 6 6 6
6
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Tolerance
e Termination &
Type T
Size
naSulphur Grade
Value Value Tolerance ezTermination & & Packing
& Packing
Tolerance iS Termination & Packing
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1
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PWC I
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0603 for standard E24 = = 2
=
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characters
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HPWC
060306030±
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PB = Standard
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=
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=
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leer/0005
3060 1206 %1206Sulphur ResistantResistant = ohmstnatsiohmshJ luJ ±5% ±5%21 0603
1206 = SRJ Sulphur Resistant R R = ohms
5000/reel
0603 5000/reel
5± = = SR = Sulphur
R=
J S
2010
2010
Sulphur Resistant
K = kilohms
ohms
SR =
R =
= kilohms
M =
0102
±20%
T3
1206
3000/reel standard
2010
2010
smholik = K = kilohms
K K = kilohms
K
0805, 1206,
,6021 ,5080 2010
0805,
0805, 1206,
0805, 1206, 1206,
3000/reel
leer/0003
3000/reel
2512
2010 2010 3000/reel
0102 2512
2152 2010
2512
2010 3000/reel
2512
2512
2010
smhogemM megohms
= = =
K =
= megohms
M M
kilohms
megohms
M = M megohms
2512 2512 1800/reel
1800/reel
leer/0081
2152
1800/reel
2512
2512
2512
T18
1800/reel
1800/reel standard
T1T1 Pb-free, 1K1K reel reel
= =T1 = 1K reel 1K
reel
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Pb-free,
T1 = Pb-free, Pb-free,
T1
sizes 1000/reel
1000/reel available
leer/0001
sezis llA
sizes
1000/reel
AllAllAll sizes
sizes
1000/reel
sizes All
All
1000/reel
SnPb finish
Standard quantities
PB
All sizes
USA USA
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)
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Note 1 - For new designs requiring resistance to sulphur-bearing gas, SR grade is preferred.
-
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0 characters D =
1206for SnPb Pn SnPb i 4 4 =64 21
1206 Omit for SnPb r E24 E24 charactersD = ±0.5% ±0.5% Plastic tape tapetape
PWC PWC D PWCar Omit = 42 for bfor SE24 4m= characters = ±0.5%C WP
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1206, 2010 3000/reel
1206, 2010
3000/reel
3000/reel
2512 o = R
R=
R = ohms
R R ohms215ohms = ±5% ±5%±5%
= = ohms 2 J J = ±5% =
2512smh2512
2512
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J= J
K = kilohms
smholik = K
K=
K = kilohms
K = kilohms kilohms
2512 2512 1800/reel
2152
1800/reel
2512 1800/reel
1800/reel
2512
= = M = megohms
smhogem = M
megohms
M M megohms
= M megohms
© Welwyn Components Limited
Bedlington, Northumberland NE22 7AA, UK
General Note
BI Technologies IRC
Telephone: +44 (0) 1670 822181
make changes in product specification
Email: info@welwyn-tt.com · Website: www.welwyn-tt.com
TT Electronics reserves the right to
· Facsimile: +44 (0) 1670 829465 ·
without notice or liability.
Welwyn
09. 09
All information is subject to TT Electronics’ own data and is considered accurate at time of going to print.
www.ttelectronics.com/resistors
© TT Electronics plc
06.20
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