Thick Film High Power
Chip Resistor
WHPC Series
www.bitechnologies.com www.irctt.com www.welwyn-tt.com
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.
© TT electronics plc
09. 11
· Double the standard power for size
· Inverse terminated versions
· Small footprint
· Excellent pulse performance
· RoHS compliant
· AEC-Q200 Qualified
Thick Film High Power Chip Resistor
WHPC Series
Double the standard power for size
Inverse terminated versions
Small footprint
Excellent pulse performance
RoHS compliant
AEC-Q200 Qualified
Electrical Data
120620100612102012181225
Power rating @70C watts 0.5 1.0 0.5 1.0 1.5
Resistance range ohms 1R0 to 10M 1R0 to 1M 10R to
1M
Limiting element voltage volts 200
Standard values E24 (1% & 5%) & E96 (1%)
Tolerance % 1, 5 ≤10R:5 >10R:1, 5 1, 5
TCR(-55ºC to 155ºC) ppm/C≤10R: 200
>10R-1M0: 100
>1M0: 200
<10R: 400
10R-100R: 200
>100R: 100
Ambient temperature rangeC-55 to +155
Pad / trace area * mm² 50 60 40 50 50 90
*Recommended minimum pad & adjacent trace area for each termination for rated power dissipation on FR4 PCB
Physical Data
Dimensions (mm) & weight (mg)
L W T A C wt.
12063.1±0.1 1.55±0.1 0.55±0.1 0.5±0.2 0.5±0.25 9
20105.0±0.2 2.5±0.15 0.55±0.1 0.5±0.2 0.6±0.25 25
06123.2±0.15 1.6±0.15 0.55±0.1 0.3±0.2 0.45±0.2 10
10205.0±0.15 2.5±0.15 0.55±0.1 0.4±0.2 0.6±0.2 26
12184.6±0.15 3.1±0.1 0.55±0.1 0.4±0.2 0.45±0.2 27
12256.25±0.15 3.1±0.15 0.55±0.1 0.65±0.2 0.45±0.2 39
General Note
Welwyn Components reserves the right to make changes in product specification without notice or liability
All information is subject to Welwyn’s own data and is considered accurate at time of going to print.
Welwyn Components LimitedBedlington, Northumberland NE22 7AA, UK
Telephone: +44 (0) 1670822181Facsimile: +44 (0) 1670829465 Email: info@welwyn-tt.com Website: www.welwyn-tt.com
Thick Film High
Power Chip Resistor
WHPC Series
www.bitechnologies.com www.irctt.com www.welwyn-tt.com
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.
© TT electronics plc
09. 11
Thick Film High Power Chip Resistor
WHPC Series
Construction
WHPC 1206 and 2010 Size
Thick-film electrodes, resistor material, overglaze
and organic protection are screen printed on an
alumina substrate. Wrap-around terminations have
an electroplated nickel barrier and matt tin plating;
this ensures excellent leach resistance properties
and solderability.
Marking
5% parts are marked with 3 digits. The first two digits are significant figures and the third digit is the number of
zeros to follow. The letter “R” represents a decimal point.
1% parts have four digits, the first three digits are significant figures and the fourth digit is the number of zeros to
follow. The letter “R” represents a decimal point.
Solvent Resistance
The body protection is resistant to all normal industrial cleaning solvents suitable for printed circuits.
Performance Data
General Note
Welwyn Components reserves the right to make changes in product specification without notice or liability
All information is subject to Welwyn’s own data and is considered accurate at time of going to print.
Welwyn Components LimitedBedlington, Northumberland NE22 7AA, UK
Telephone: +44 (0) 1670822181Facsimile: +44 (0) 1670829465 Email: info@welwyn-tt.com Website: www.welwyn-tt.com
Protection
Resistor
Overglaze
Top Electrode
Bottom Electrode
Bridge Electrode
Wraparound Termination
Substrate
Marking
AEC-Q200
Table 7
Method
Max.
Typ.
ref.
Test
Tol:
F
J
3
High Temp. Exposure *
MIL-STD-202 Method 108
ΔR%
1
3
0.15
4
Temperature Cycling
JESD22 Method JA-104
ΔR%
0.5
+0.05Ω
1.5
+0.1Ω
0.1
6
Moisture Resistance
MIL-STD-202 Method 106
ΔR%
2
+0.1Ω
3
+0.1Ω
0.05
7
Biased Humidity *
MIL-STD-202 Method 103
ΔR%
2
3
+0.1Ω
0.2
8
Operational Life (Cyclic Load) *
MIL-STD-202 Method 108
ΔR%
2
3
+0.1Ω
0.2
14
Vibration
MIL-STD-202 Method 204
ΔR%
0.5
+0.05Ω
1
+0.05Ω
0.1
15
Resistance to Soldering Heat *
MIL-STD-202 Method 210
ΔR%
1
0.05
16
Thermal Shock *
MIL-STD-202 Method 107
ΔR%
0.5
1
0.05
18
Solderability *
J-STD-002
>95% coverage
21
Board Flex *
AEC-Q200-005
ΔR%
1
0.25
22
Terminal Strength
AEC-Q200-006
no damage
Climatic *
Category 55/155/42
ΔR%
2
3
0.2
Short Term Overload *
6.25 x Pr or 2 x LEV for 5s
ΔR%
1.5
2
+0.1Ω
0.15
Pulse Loading Capability
10,000 pulses @70°C
See graphs below
ΔR%
2
0.5
Insulation Resistance *
400V for 1 minute
≥10G
1. Full AEC-Q200 qualification applies to 1206 and 2010 sizes. Other sizes received the tests marked *.
Thick Film High
Power Chip Resistor
WHPC Series
www.bitechnologies.com www.irctt.com www.welwyn-tt.com
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.
© TT electronics plc
09. 11
Thick Film High Power Chip Resistor
WHPC Series
0
20
40
60
80
100
120
-55 -20 15 50 85 120 155
Ambient temperature (ºC)
Rated power (%)
0
10
20
30
40
50
60
70
80
0 0.2 0.4 0.6 0.8 1
Power Dissipation (W)
Temperature Rise (°C) .
Pulse Loading Capability
Test condition: 10,000 pulses at 70ºC. Single pulse condition has mean power ≤10% of Pr. Continuous pulse
condition has mean power = Pr.
De-Rating Curve Temperature Rise (hotspot)
WHPC All Sizes WHPC 1206 and 2010
General Note
Welwyn Components reserves the right to make changes in product specification without notice or liability
All information is subject to Welwyn’s own data and is considered accurate at time of going to print.
Welwyn Components LimitedBedlington, Northumberland NE22 7AA, UK
Telephone: +44 (0) 1670822181Facsimile: +44 (0) 1670829465 Email: info@welwyn-tt.com Website: www.welwyn-tt.com
WHPC 1206
1
10
100
1.E-05 1.E-04 1.E-03 1.E-02 1.E-01 1.E+00
Pulse duration (s)
Pulse power (W)
Single pulse
Continuous pulse
WHPC 2010
1
10
100
1000
1.E-05 1.E-04 1.E-03 1.E-02 1.E-01 1.E+00
Pulse duration (s)
Pulse power (W)
Single pulse
Continuous pulse
12062010
700
Thick Film High
Power Chip Resistor
WHPC Series
www.bitechnologies.com www.irctt.com www.welwyn-tt.com
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.
© TT electronics plc
09. 11
Thick Film High Power Chip Resistor
WHPC Series
Packaging
Ordering Procedure
Example: WHPC1206 at 10 kilohms and 1% tolerance on a reel of 5000 pieces -
W H P C 1 2 0 6 – 1 0 K F T 5
Type
Size
Value (use IEC62 code)
Tolerance (use IEC62 code)
F 1%
J 5%
Packing
T5 1206, 06125000/reel
T4 Tape 2010, 1020, 1218, 12254000/reel Standard
General Note 08.10
Welwyn Components reserves the right to make changes in product specification without notice or liability
All information is subject to Welwyn’s own data and is considered accurate at time of going to print.
Welwyn Components LimitedBedlington, Northumberland NE22 7AA, UK
Telephone: +44 (0) 1670822181Facsimile: +44 (0) 1670829465 Email: info@welwyn-tt.com Website: www.welwyn-tt.com
Tape dimensions in mm
W P1 P0 P2 D0 D1 E F A0 B0 K0 A
Type
0.3 0.1 0.1 0.05 0.1 0.2 0.1 0.05 0.2 0.2 0.1 1
12068.0 4.0 4.0 2.0 1.5 1.0 1.75 3.5 1.9 3.5 0.85 9
201012.0 4.0 4.0 2.0 1.5 1.5 1.75 5.5 2.79 5.5 1.2 13.0
06128.0 4.0 4.0 2.0 1.5 N.A 1.75 3.5 2.0 3.60 0.81 10.0
102012.0 4.0 4.0 2.0 1.5 N.A 1.75 5.5 2.8 5.40 0.75 13.8
121812.0 4.0 4.0 2.0 1.5 1.5 1.75 5.5 3.5 4.80 1.0 13.8
122512.0 4.0 4.0 2.0 1.5 1.5 1.75 5.5 3.5 6.70 1.0 13.8
