WELWYN PWC_13

Pulse Withstanding
Withstanding
Pulse
Chip Resistors
Resistors
Welwyn Components
PWC Series
PWC Series
Excellent pulse withstand performance
withstand
Excellent
Improvedpulse
working
voltageperformance
voltage
Improved
Improved working
power rating
power
rating
Improved
Standard chip
sizes
(0805 to 2512)
Standard
Custom designs
available
chip sizes
(0805 to 2512)
Custom
Anti-sulphur
version
available
designs available
·
·
·
·
·
·
Electrical Data
Size
1206
0805
Power @70°C
0.25
W
Resistance range
0.33
Ohms
Tolerance
%
LEV
V
TCR
ppm/°C
Operating temperature
2010
0.5
2512
0.75
1
1.5
2
1R0 to 10M
10R to 1M: 0.5, All values: 1, 5
150
200
400
500
<10R:200 ≥10R:100
°C
-55 to +155
Thermal Impedance
°C/W
220
160
145
80
70
55
40
Pad / trace area *
mm2
40
50
125
60
250
100
500
Values
E96 preferred - other values to special order
See graphs – full application note available on request
Pulse Capability
*Recommended minimum pad & adjacent trace area for each termination for rated power dissipation on FR4 PCB
Physical Data
Dimensions of PWC resistors are given below in mm and weight in g
L
W
T max
A
B
C
Wt.
0805
2.0±0.3
1.25±0.2
0.6
0.3±0.15
0.9 min
0.3±0.1
0.009
1206
3.2±0.4
1.6±0.2
0.7
0.4±0.2
1.7 min
0.4±0.15
0.020
2010
5.1±0.3
2.5±0.2
0.8
0.6±0.3
3.0 min
0.6±0.25
0.036
2512
6.5±0.3
3.2±0.2
0.8
0.6±0.3
4.4 min
0.6±0.25
0.055
C
T
A
B
L
A
W
Wrap-around terminations
(3 faces)
Construction
Marking
Thick film resistor material, overglaze and organic protection
are screen printed on a 96% alumina substrate. Wrap-around
terminations have an electroplated nickel barrier and solder
coating, this ensures excellent ‘leach’ resistance properties
and solderability.
Components are not marked. Reels are marked with type,
value, tolerance, date code and quantity.
Note that anti-sulphur version parts below 100R are
produced in flip-chip format with the resistor element on
the underside.
Solvent Resistance
The body protection is resistant to all normal industrial
cleaning solvents suitable for printed circuits.
General Note
Note
General
Welwyn
Components
reserves
right to
make in
changes
in specification
product specification
without
TT
electronics
reserves the
right the
to make
changes
product
without notice
or notice
liability.or 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
TT electronics plc
www.bitechnologies.com www.irctt.com www.welwyn-tt.com
© Welwyn Components Limited · Bedlington, Northumberland NE22 7AA, UK
©
TT electronics
plc822181 · Facsimile: +44 (0) 1670 829465 · Email: [email protected] · Website: www.welwyn-tt.com
Telephone:
+44 (0) 1670
07. 08
05.13
37
Pulse
PulseWithstanding
Withstanding
Chip
ChipResistors
Resistors
Welwyn Components
PWC Series
PWC Series
Performance Data
Size
Maximum
Typical
Load at rated power: 1000 hours at 70°C
ΔR%
1
0.25
Shelf life test: 12 months at room temperature
ΔR%
0.1
0.02
Overload: 6.25 x rated power for 2 seconds
ΔR%
1
0.1
Dry heat: 1000 hours at 155°C
ΔR%
1
0.2
Long term damp heat
ΔR%
1
0.25
Temperature rapid change
ΔR%
0.25
0.05
Resistance to solder heat
ΔR%
0.25
0.05
Derating from rated power at 70°C
Zero at 155°C
Pulse Withstanding
Pulse
Withstanding Volts
Chip
Resistors
Note: A 0.01 Ohm addition to be added to the performance of all resistors <10 Ohms.
Chip Resistors
Pulse Performance
Data
Pulse
Performance
Data
Pulse Performance
Data
Resistance to sulphur-bearing gas (AS version only): ASTM-B-809
0.25
0.05
Voltage proof
500
Performance Data
Lightning SurgePulse
Resistors are tested in accordance with IEC 60 115-1 using both 1.2/50s and 10/700s pulse shapes. The limit of acceptance
Lighting Surge
Lighting
is a shift
intested
resistance
of less than 1%
from
the60
initial
value.using both 1.2/50µs and 10/700µs pulse shapes. 10 pulses
lightning surge resistors
areSurge
in accordance
with
IEC
115-1
Resistors are tested in accordance with IEC 60 115-1 using both 1.2/50s and 10/700s pulse shapes. The limit of acceptance
limit of acceptanceis is
a shift
in resistance
ofthan
less1%
than
the initial value.
a shift
in resistance
of less
from1%
the from
initial value.
1.2/50 µS Lightning Surge
1.2/50 µS Lightning Surge
10000
2512
10000
Peak voltage
(volts)(volts)
Peak voltage
are applied. The
2512
2010
1206
2010
0805
1206
0805
1000
1000
100
100
Lightning Surge
lightning surge resistors are tested10in
1
10
10
accordance with IEC 60 115-1 using
1
10
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.10000
100
100
1000
10000
Resistance (ohms)
1000
10000
100000
100000
1000000
1000000
10000000
10000000
Resistance (ohms)
10/700 µS Lightning Surge
10/700 µS Lightning Surge
2512
10000
Peak Voltage
(volts)(volts)
Peak Voltage
2512
2010
1000
2010
1206
0805
1206
0805
1000
100
100
10
1
10
100
10
1
10
100
1000
10000
Resistance (ohms)
1000
10000
100000
100000
1000000
1000000
10000000
10000000
Resistance (ohms)
General Note
Advanced
Film
Division
• 4222inSouth
Staples Street
• Corpus Christi
Texas 78411
USAor liability.
TT electronics reserves the
right to
make
changes
product
specification
without
notice
Telephone: 361 992 7900 • Facsimile: 361 992 3377 • Website: www.irctt.com
All information is subject
to
TT
electronics’
own
data
and
is
considered
accurate
at
time
of going to print.
Advanced Film Division • 4222 South Staples Street • Corpus Christi Texas 78411 USA
PWC Series Issue January 2009
www.bitechnologies.com
www.irctt.com www.welwyn-tt.com
PWC Series Issue January 2009
Telephone: 361 992 7900 • Facsimile: 361 992 3377 • Website: www.irctt.com
© Welwyn Components
Limited Bedlington, Northumberland NE22 7AA, UK
Telephone:
+44 (0) 1670
©
TT electronics
plc822181 · Facsimile: +44 (0) 1670 829465 · Email: [email protected] · Website: www.welwyn-tt.com
07. 08
05.13
Pulse Withstanding
Chip Resistors
PWC Series
Single Impulse
e Withstanding
p Resistors
The single impulse graph is the result of 50 impulses of rectangular shape applied at one minute intervals. The limit of acceptance was a shift in
resistance of less than 1% from the initial value.
Single Pulse
Performance Data
1000
pulse:
e impulse graph is
of 50 impulses of
ar shape applied at
e intervals. The
ceptance was a
istance of less
rom the initial
power applied
ct to the
smpulse:
of the maximum
e
gleimpulse
impulsevoltage
graph is
wn.
lt of 50 impulses of
se Withstanding
p Resistors
Pulse Power (watts)
100
10
2512
Single Pulse
e Performance Data
2010
1206
1000
1
0.0001
0.001
0.01
0.1
1
0805
Pulse duration (seconds)
2010
Pulse duration (seconds)
1
1206
Continuous Pulses
0805
100
0.1
0.0001
0.001
0.01
0.1
1
Pulse Power (watts)
Pulse Duration (seconds)
Pulse Voltage (Volts)
pulses:
nuous load graph
ned by applying
rectangular pulses
pulse period was
so that the
ower dissipated
stor was equal
d power at 70°C.
limit of acceptance
uous load due to
t in resistance of
ve pulses:
1% from the initial
tinuous load graph
ained by applying
e rectangular pulses
he pulse period was
d so that the
power dissipated
sistor was equal
ed power at 70°C.
he limit of acceptance
hift in resistance of
n 1% from the initial
Pulse Power (watts)
Pulse Power (watts)
100
ular shape applied at
ute intervals. The
Continuous Pulses
acceptance was a
100
esistance of less
Continuous Load Due to Repetitive
Pulses
% from the initial
10
2512
The continuous load graph was obtained by applying repetitive rectangular pulses where the pulse period was adjusted so that the average
he power applied
2010
in resistance of less than 1%
ject to the power dissipated in the resistor was equal to its rated power at 70°C. Again the limit of acceptance was a shift
1206
10
from the initial value
ons of the maximum
ible impulse voltage
1
2512 0805
0.0001
0.001
0.01
0.1
1
hown.
us load due to
General Note
10
Pulse Voltage
2512
10000
2010
1
1206
0805
1000
0.1
0.0001
0.001
0.01
0.1
Pulse Duration (seconds)
2512
2010
1206
0805
100
Pulse Voltage
10000
10
0.0001
0.001
0.01
0.1
se Voltage (Volts)
TT electronics reserves the right to make changes in product specification without notice or liability.
Pulse Duration (seconds)
All information is subject to TT electronics’ own data and is considered accurate at time of going to print.
1000
Division • 4222 South Staples Street • Corpus Christi Texas 78411 USA
© 992
TT 3377
electronics
2 7900 • Facsimile: 361
• Website:plc
www.irctt.com
1
1
www.bitechnologies.com www.irctt.com www.welwyn-tt.com
PWC Series Issue January
2009
2512
2010
1206
05.13
Pulse
PulseWithstanding
Withstanding
Chip
ChipResistors
Resistors
Welwyn Components
PWC Series
PWC
Series
% of Rated Power
Thermal Performance Data
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
PWC 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. Allowance should be made if
smaller areas of copper are used.
Ordering
Procedure
A full Application Note on
the PWC Series is available.
Ordering
This
product has twoProcedure
valid part numbers:
Ordering
Procedure
This
has
twotwo
validvalid
part
numbers:
European
(Welwyn)
Part
Number:
Thisproduct
product
has
part
numbers:PWC2512-2K0JI (2512, 2 kilohms ±5%, Pb-free)
EuropeanP (Welwyn)
±5%, Pb-free)
W C Part
2
5Number:
1
2 PWC2512-2K0JI
2 (2512,
K 0 2 kilohms
J
I
1
W
P
1
1
C
2
5
2
1
3
2
2
3
2
-
3
Type Size
Anti-Sulphur
1
2
3
PWC 0805 Omit for standard
Type 1206
Size ASAnti-Sulphur
= Anti-sulphur
PWC 2010
0805 Omit for standard
2512
1206 AS = Anti-sulphur
2010
2512
2
4
K
0
4
4
5
J
I
5
5
Value
4
E24 = 3/4 characters
Value
E96 = 3/4
characters
= ohms
E24 =R3/4
characters
kilohms
E96 K
==
3/4
characters
M=
R megohms
= ohms
K = kilohms
M = megohms
6
6
6
Tolerance
Packing
5
6
D = ±0.5%
I = Standard
Tolerance
Packing
F = ±1%
0805, 1206,
3000/reel
2010
±5%
DJ == ±0.5%
I = Standard
2512
F = ±1%
0805,
1206, 1800/reel
3000/reel
2010 T1
J = ±5%
All2512
sizes
1000/reel
1800/reel
T1
All sizes
1000/reel
USA (IRC) Part Number: PWC-PWC2512LF-2001JELT
(2512, 2 kilohms ±5%, Pb-free)
USA (IRC)
PWC-PWC2512LF-2001JELT
P Part
W Number:
C
P
W C 2
5
1
2
L
F(2512,
2 20 kilohms
0
1 ±5%,
J Pb-free)
E L
T
1
W
P
1
1
C
-
2
Family Model
1
2
PWC
PWC
Family Model
PWC
PWC
P
2
W
3
Size
3
0805
Size
1206
2010
0805
2512
1206
2010
2512
2
C
2
4
5
3
3
1
2
L
5
4
F
2
4
0
5
0
5
6
6
J
6
Termination
Value
Tolerance
4
5
6
Omit for SnPb 3 digits + multiplier D = ±0.5%
Termination
Value
Tolerance
LF = Pb-free
F = ±1%
R = ohms for
ohms DJ == ±0.5%
±5%
Omit for SnPb values
3 digits<100
+ multiplier
LF = Pb-free
F = ±1%
R = ohms for
values <100 ohms
J = ±5%
©
Welwyn
Components Limited Bedlington, Northumberland NE22 7AA, UK
General
Note
1
7
L
T
7
7
Packing
7
ELT = Plastic tape
Packing
0805, 1206,
3000/reel
2010
ELT = Plastic tape
2512
1800/reel
0805,
1206,
3000/reel
2010
2512
1800/reel
Telephone:
+44
(0) 1670
Facsimile:
+44 in
(0)product
1670 829465
· Email:
[email protected]
· Website: www.welwyn-tt.com
TT electronics
reserves
the822181
right to· make
changes
specification
without
notice or liability.
All information is subject to TT electronics’ own data and is considered accurate at time of going to print.
E
09. 09
www.bitechnologies.com www.irctt.com www.welwyn-tt.com
© TT electronics plc
05.13