DATA SHEET
SURGE CHIP RESISTORS
AUTOMOTIVE GRADE
SR series
20%, 10%, 5%
sizes 0402/0603/0805/1206/1210/1218/2010/2512
RoHS compliant & Halogen free
Product specification – October 02, 2017 V.6
Product specification
2
8
Chip Resistor Surface Mount
SR
SERIES
0402/0603/0805/1206/1210/1218/2010/2512
SCOPE
This specification describes
SR0402 to SR2512 chip resistors
with lead-free terminations made by
thick film process.
APPLICATIONS
Telecommunications
ORDERING INFORMATION - GLOBAL PART NUMBER
Part number is identified by the series name, size, tolerance, packaging
type, temperature coefficient, taping reel and resistance value.
GLOBAL PART NUMBER
SR XXXX X X X XX XXXX L
(1)
(2) (3) (4)
(5)
(6)
(7)
(1) SIZE
0402 / 0603 / 0805 / 1206 / 1210 / 1218 / 2010 / 2512
Power supplies
Car electronics
(2) TOLERANCE
J = ± 5%
K = ± 10%
M = ± 20%
FEATURES
AEC-Q200 qualified
Superior to SR series in pulse
withstanding voltage and surge
withstanding voltage.
MSL class: MSL 1
Halogen free epoxy
RoHS compliant
-
(3) PACKAGING TYPE
R = Paper taping reel
K = Embossed taping reel
(4) TEMPERATURE COEFFICIENT OF RESISTANCE
–
= Based on spec.
Products with lead-free
terminations meet RoHS
requirements
Pb-glass contained in electrodes,
resistor element and glass are
exempted by RoHS
(5) TAPING REEL
07 = 7 inch dia. Reel
13 = 13 inch dia. Reel
7W = 7 inch dia. Reel & 2 x standard power
7T = 7 inch dia. Reel & 3 x standard power
-
47 = 7 inch dia. Reel & 4xstandard power
(6) RESISTANCE VALUE
1
Ω
≤
R
≤
100 KΩ
There are 2~4 digits indicated the resistance value. Letter R/K/M is decimal point, no
need to mention the last zero after R/K/M, e.g.1K2, not 1K20.
Detailed coding rules of resistance are shown in the table of
“Resistance rule of
global part number”.
Reduce environmentally
hazardous waste
High component and equipment
reliability
(7) DEFAULT CODE
Letter L is the system default code for ordering only.
(Note)
Resistance rule of global part
number
Resistance coding
Example
rule
XRXX
(1 to 9.76
Ω)
XXRX
(10 to 97.6
Ω)
XXXR
(100 to 976
Ω)
XKXX
(1 to 9.76 KΩ)
XXKX
(10 to 97.6 KΩ)
XXXK
(100 KΩ)
1R = 1
Ω
1R5 = 1.5
Ω
9R76 = 9.76
Ω
10R = 10
Ω
97R6 = 97.6
Ω
100R = 100
Ω
1K = 1,000
Ω
9K76 = 9760
Ω
10K = 10,000
Ω
97K6= 976,000
Ω
100K = 100,000
Ω
O
RDERING EXAMPLE
The ordering code for an SR0805
chip resistor, value 10 KΩ with
± 5% tolerance, supplied in 7-inch
tape reel is: SR0805JR-0710KL.
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Oct. 02, 2017 V.6
Product specification
3
8
Chip Resistor Surface Mount
SR
SERIES
0402/0603/0805/1206/1210/1218/2010/2512
MARKING
SR0402
No Marking
Fig. 1
SR1218
E-24 series: 3 digits
First two digits for significant figure and 3rd digit for number of zeros
Fig. 2
Value=10 KΩ
SR0603 / SR0805 / SR1206 / SR1210 / SR2010 / SR2512
03
Fig. 3
NOTE
E-24 series: 3 digits
First two digits for significant figure and 3rd digit for number of zeros
Value=10 KΩ
For further marking information, please refer to data sheet “Chip resistors marking”.
CONSTRUCTION
The resistor is constructed on top of a high-grade
ceramic body. Internal metal electrodes are added at
each end and connected by a resistive glaze. The
resistive glaze is covered by a lead-free glass. The
composition of the glaze is adjusted to give the
approximately required resistance value. The whole
element is covered by a protective overcoat. The
top of overcoat is marked with the resistance value.
Finally, the two external terminations (Ni/matte tin)
are added, as shown in Fig.4.
DIMENSIONS
Table 1
TYPE
SR0402
SR0603
SR0805
SR1206
SR1210
SR1218
SR2010
SR2512
L (mm)
1.00± 0.05
1.60± 0.10
2.00± 0.10
3.10± 0.10
3.10± 0.10
3.10± 0.10
5.00± 0.10
6.35± 0.10
OUTLINES
Fig. 4
Chip resistor outlines
W (mm)
0.50± 0.05
0.80± 0.10
1.25± 0.10
1.60± 0.10
2.60± 0.15
4.60± 0.10
2.50± 0.15
3.10± 0.15
H (mm)
0.35± 0.05
0.45± 0.10
0.50± 0.10
0.55± 0.10
0.55± 0.10
0.55± 0.10
0.55± 0.10
0.55± 0.10
I
1
(mm)
0.20± 0.10
0.25± 0.15
0.35± 0.20
0.45± 0.20
0.45± 0.15
0.45± 0.20
0.55± 0.15
0.60± 0.20
I
2
(mm)
0.25± 0.10
0.25± 0.15
0.35± 0.20
0.40± 0.20
0.50± 0.20
0.40± 0.20
0.50± 0.20
0.50± 0.20
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Oct. 02, 2017 V.6
Product specification
4
8
Chip Resistor Surface Mount
SR
SERIES
0402/0603/0805/1206/1210/1218/2010/2512
For dimension, please refer to Table 1
SR0402
SR0603/0805/1206/
1210/2010/2512
SR1218
Side view for all type
Fig. 5
Chip resistor dimensions
ELECTRICAL CHARACTERISTICS
Table 2
Operating
Temperature Range
CHARACTERISTICS
Max.
Max.
Dielectric
Working Overload Withstanding
Voltage
Voltage
Voltage
Temperature
Coefficient of
Resistance
TYPE
POWER
RESISTANCE RANGE
1/16W
SR0402
1/8W
1/5W
1/10W
50 V
100 V
100 V
SR0603
1/5W
1/4W
1/8 W
1/4W
1/3W
1/2W
1/4 W
E24 5%, 10%, 20%
1
Ω
≤
R
≤
100 KΩ
–55
°C to +155 °C
75V
150V
150V
SR0805
150V
300V
300V
± 200 ppm/°C
SR1206
SR1210
SR1218
SR2010
SR2512
1/2W
3/4W
1/2W
1W
3/4 W
1W
2W
200 V
200 V
200 V
200 V
200 V
400 V
400 V
400 V
400 V
400 V
500 V
500 V
500 V
500 V
500 V
FOOTPRINT AND SOLDERING PROFILES
Recommended footprint and soldering profiles, please refer to data sheet “Chip resistors mounting”.
PACKING STYLE AND PACKAGING QUANTITY
Table 3
Packing style and packaging quantity
PACKING STYLE
Paper taping reel (R)
REEL DIMENSION
7" (178 mm)
13" (330 mm)
SR0402
10,000
50,000
---
SR0603/0805/1206
5,000
20,000
---
SR1210
5,000
20,000
---
SR1218/2010/2512
---
---
4,000
Embossed taping reel (K)
NOTE
7" (178 mm)
1. For paper/embossed tape and reel specification/dimensions, please refer to data sheet “Chip resistors packing”.
RESISTANCE
RANGE
PT040
Oct. 02, 2017 V.6
2
100 mΩ to 910 mΩ
± 200 ppm/°C
TEMPERATURE COEFFICIENT OF RESISTANCE
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Product specification
5
8
Chip Resistor Surface Mount
SR
SERIES
0402/0603/0805/1206/1210/1218/2010/2512
FUNCTIONAL DESCRIPTION
OPERATING TEMPERATURE RANGE
Range: –55 °C to +155 °C
POWER RATING
Each type rated power at 70 °C:
SR0402: 07 = 1/16W; 7W = 1/8W; 7T=1/5W
SR0603: 07 = 1/10W; 7W = 1/5W; 7T=1/4W
SR0805: 07 = 1/8W; 7W = 1/4W; 7T=1/3W; 47=1/2W
SR1206: 07 = 1/4W; 7W = 1/2W; 7T=3/4W
SR1210: 07 = 1/2W
SR1218: 07 = 1W
SR2010: 07 = 3/4W
SR2512: 07 = 1W; 7W=2W
R
ATED VOLTAGE
The DC or AC (rms) continuous working voltage
corresponding to the rated power is determined by
the following formula:
V=
(P X R)
Fig. 6
Maximum dissipation (P
max
) in percentage of rated power
as a function of the operating ambient temperature (T
amb
)
Where
V = Continuous rated DC or AC (rms) working voltage (V)
P = Rated power (W )
R = Resistance value (Ω )
PULSE LOAD BEHAVIOR
Fig. 7
Pulse-Load behavior
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Oct. 02, 2017 V.6
stm32/stm8
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