TOKEN
PWR Pulse Withstanding Chip Resistors
Pulse Withstanding
Chip Resistors
Token (PWR) Pulse Withstanding Chip Resistors
Provide 50 Percent Increase in Power Dissipation
Preview
As electronic design engineers have increased the power density of their equipment, the demand for smaller
surface mount single-chip circuit protection resistors has also increased. Token developed the PWR Series
resistors to provide an economical alternative to bulky molded wirewound components or multi-chip solutions
while saving both PC board space and manufacturing costs.
To meet the increased demand for the PWR Series resistors, Token has developed a series of pulse withstanding
chip resistors with improved power ratings in reduced surface mounted sizes. Designated the PWR Series, the
chip resistors deliver up to 50 percent higher power ratings than conventional surface mount resistors - up to
1.5W in a standard 2512 size chip.
Token is able to boost this power rating up to 50 percent through a
combination of proprietary power film materials and advanced
manufacturing processes. The PWR Series Resistors are available
in four standard sizes (0805, 1206, 2010 and 2512) with power
ratings from 0.125W to 1.5W, and maximum operating voltage
ratings for 100V to 500V. Resistance range is from 10 Ω to
20 MΩ, with tolerance tight to 0.5 percent. The PWR meets
restriction of hazardous substances RoHS directive and RoHS
compliance.
Along with the increased power ratings, the PWR Series resistors also feature high surge and high voltage
ratings, making them extremely stable in demanding surge and pulse environments. The PWR Series chip
resistors are specified for use in power supplies, circuit protection devices, portable battery chargers, motor
controls and line-powered equipment.
Token will also produce devices outside these specifications to meet specific customer requirements, please
contact our sales for more information.
Features
- High Power Rating .
- Tolerance from ±0.5%~5%.
- Improved Working Voltage Ratings.
- Excellent Pulse Withstanding Performance.
- Standard Package sizes of 0805, 1206, 2010,
and 2512.
Applications
- Power Supplies, Diagnostic Equipment.
- Industrial Controls, LCD Video Monitors.
- Portable Battery Chargers, Medical Devices.
- Motor Controls and Line-Powered Equipment.
- Metering (Testing/Measurement), Circuit
Protection Devices .
Version 2010
http://www.token.com.tw/
rfq token.com.tw
01 of 07
TOKEN
PWR Pulse Withstanding Chip Resistors
Dimensions (Unit: mm)
Marking
Protective Layer
W
L
Sn Plating
Ni Plating
Thick Film Ni/Cr Conductor
Alumina Substrate
Overcoat
Resistive Element
D1
D1
T
D2
D2
Codes
PWR05 (0805)
PWR06 (1206)
PWR10 (2010)
PWR12 (2512)
L
2.00±0.15
3.05±0.15
5.00±0.20
6.30±0.15
W
1.25±0.15
1.55±0.15
2.45±0.15
3.10±0.15
T
0.55±0.10
0.55±0.10
0.60±0.15
0.55±0.10
D1
0.30±0.20
0.50±0.30
0.60±0.30
0.60±0.30
D2
0.40±0.25
0.40±0.25
0.50±0.25
0.50±0.25
Standard Electrical Specifications
Type
PWR05
(0805)
PWR06
(1206)
PWR10
(2010)
PWR12
(2512)
Power
Ratingat 70°C
0.125W
0.33W
0.75W
1.5W
Operating
Temp. Range
-55 ~ +155°C
-55 ~ +155°C
-55 ~ +155°C
-55 ~ +155°C
Max
Operating
Voltage
150V
200V
400V
500V
Resistance
Tolerance
±0.5%
±1.0%
±2.0%
±3.0%
±5.0%
±0.5%
±1.0%
±2.0%
±3.0%
±5.0%
Resistance
Range
300Ω~20MΩ
10Ω~299Ω
20.1Ω~10MΩ
10Ω~20Ω
TCR
±100PPM / °C
±200PPM / °C
±100PPM / °C
±200PPM / °C
Recommend Land Pattern (Unit: mm)
C
B
Codes
PWR05 (0805)
PWR06 (1206)
PWR10 (2010)
PWR12 (2512)
02 of 07
A
B
1.00
1.15
1.40
1.60
rfq token.com.tw
A
1.00
2.00
3.60
4.90
http://www.token.com.tw/
C
1.35±0.2
1.70±0.2
2.50±0.2
3.10±0.2
Version 2010
TOKEN
PWR Pulse Withstanding Chip Resistors
Packaging Quantity & Reel Specifications (Unit: mm)
W
ΦC
ΦA
ΦB
T
Codes
PWR05 (0805)
PWR06 (1206)
PWR10 (2010)
PWR12 (2512)
ΦA
178.0±1.0
178.0±1.0
178.0±1.0
178.0±1.0
ΦB
60.0±1.0
60.0±1.0
60.0±1.0
60.0±1.0
ΦC
13.5±0.7
13.5±0.7
13.5±0.7
13.5±0.7
W
9.5±1.0
9.5±1.0
13.5±1.0
13.5±1.0
T
11.5±1.0
11.5±1.0
15.5±1.0
15.5±1.0
Paper Tape Emboss Plastic
(PCS)
Tape (PCS)
5,000
-
5,000
-
-
4,000
-
4,000
Emboss Plastic Tape Specifications (Unit: mm)
Top Tape
Φ D0
E
B
F
W
Resistor
Emboss Tape
Codes
PWR10
(2010)
PWR12
(2512)
A±0.10
2.85
3.40
B±0.10 W±0.10
5.45
6.65
12.0
12.0
t
A
P1
P2
P0
Φ D1=1.5min
direction of unreeling
E±0.10
1.75
1.75
F±0.05 P0±0.05 P1±0.10 P2±0.05
ΦD0+0.10
T±0.20
5.5
5.5
4.00
4.00
4.00
4.00
2.00
2.00
1.50
1.50
1.00
1.00
Version 2010
http://www.token.com.tw/
rfq token.com.tw
03 of 07
TOKEN
PWR Pulse Withstanding Chip Resistors
Application & Soldering Notes
Today’s electronic devices are becoming smaller and smaller. The requirement, in particular, for pulse withstand
capability is growing due to the need to protect sensitive modern electronic systems.
To meet this demand Token Electronics have designed a Pulse Withstanding Chip Resistor (PWR Series). The
enhanced performance of the chips is made possible by the precise use of the best resistance inks and a closely
controlled production process.
Application Notes:
Applications vary from line protection for telecommunications to surge withstanding resistors for use in
circuit breakers. Details of a typical telecomm and power supply application are given below.
Telephone lines can be subjected to a large range of voltage disturbances, many of which can damage
switching equipment. This has led to the need for circuit protection against both high voltage transients,
usually of short duration caused by lighting strikes and overloads of longer duration, due to direct
connection to mains power lines.
These two faults are separated into primary and secondary protection.
- Primary protection handles the high voltage transients, and is usually located within the exchange.
- Secondary protection is usually built into the equipment to be protected, and deals with both
current and voltage limiting.
Voltage limiting prevents damage to the equipment and shock hazards, and current limiting prevents
damage to wiring.
To determine the suitability of a PWC series chip resistors for your application refer to the pulse
withstanding data as given lighting surge performance using both 1.2/50μs and 10/700μs pulse shapes.
Soldering Notes:
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 PWR 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.
PWR 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.
04 of 07
http://www.token.com.tw/
rfq token.com.tw
Version 2010
TOKEN
PWR Pulse Withstanding Chip Resistors
100
Environmental Characteristics
Power Ration (%)
80
60
40
30
20
0
0
20
40
60 70 80 100
120 140
160 180
Ambient Temperature (°C)
Test Item
Short Time Overload
Specification
±0.5%
Test Method
JIS-C-5202-5.5
RCWV*2.5 or Max Overloading Voltage, 5 sec-
onds
MIL-STD-202F Method 107G
-55°C~150°C, 100 cycles
MIL-STD-202F Method 304
+25/-55/+25/+125/+25°C
MIL-STD-202F Method 108A RCWV, 70°C, 1.5
hours ON, 0.5 hours OFF,
total 1000~1048 hours
MIL-STD-202F Method 103B 40°C, 90~95%RH,
RCWV 1.5 hours ON,
0.5 hours OFF, total 1000~1048 hours
JIS-C-5202-7.2
96 hours @ +155°C without load
JIS-C-5202-7.1
1hour,-65°C followed by 45 minutes of RCWV
JIS-C-5202-6.1.4
Bending Amplitude 3mm for 10 seconds
MIL-STD-202F Method 210E
260±5°C, 10±1seconds
MIL-STD-202F Method 208H
245°C±5°C, 3±0.5(sec)
MIL-STD-202F Method 301
Apply Max Overload Voltage for l minute
MIL-STD-202F Method 302
Apply 100VDC for 1minute
Thermal Shock
Temperature Coefficient of
Resistance
Load Life
±0.5%
As Spec.
±1%
Humidity (Steady State)
±0.5%
Resistance to Dry Heat
Low Temperature Operation
Bending Strength
Resistance to Soldering Heat
Solderability
Dielectric Withstand Voltage
Insulation Resistance
±0.5%
±0.5%
As Spec.
±0.5%
95% min coverage
As Spec.
>1000MΩ
Note: Storage Temperature: 25±3°C; Humidity: <80%RH
Version 2010
http://www.token.com.tw/
rfq token.com.tw
05 of 07
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