CSS2512 [ETC]
Ultra Precision Current Sensing Chip Resistor; 超精密电流感应贴片电阻
| 型号： | CSS2512 |
| 厂家： | 
ETC |
| 描述： | Ultra Precision Current Sensing Chip Resistor |
| 文件： | 总6页 (文件大小：147K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
CSS/CSSH Series
Stackpole Electronics, Inc.
Resistive Product Solutions
Ultra Precision Current Sensing Chip Resistor
•
•
•
High power metal alloy current sense resistor
Very low inductance (0.5nH to 5nH)
High temperature performance up to 225°C;
for operation up to 275ºC, contact factory
Excellent frequency response
Low thermal EMF (<1µV/C)
Proprietary processing technique produces extremely low
resistance values
Features:
•
•
•
•
RoHS compliant / lead-free
Electrical Specifications
Maximum Power
Rating (Watts)
Maximum Rating
Current (A)
Maximum Overload
Current (A)
Ohmic Range (Ω) and Tolerance
Type/Code
CSS1206
TCR (ppm/ºC)
0.5%
1%, 2%, 5%
±50 ppm/ºC
±25 ppm/ºC
±15 ppm/ºC
-
0.001 - 0.004
0.007 - 0.015
-
1
31.62
31.62
63.25
63.25
63.25
0.005 0.015
0.016 - 0.05
0.016 - 0.05
±50 ppm/ºC
±25 ppm/ºC
±15 ppm/ºC
-
0.001 - 0.003
0.004 - 0.006
0.007 - 0.1
CSS2010
CSS2512
1
2
-
0.007 - 0.1
±50 ppm/ºC
±25 ppm/ºC
±15 ppm/ºC
-
0.0005 - 0.003
0.004 - 0.006
0.007 - 0.075
141.42
-
0.007 - 0.075
±50 ppm/ºC
±25 ppm/ºC
±50 ppm/ºC
±25 ppm/ºC
±15 ppm/ºC
-
0.0005 - 0.0025
0.003 - 0.01
CSSH2512
CSS2725
CSS2728
3
4
3
77.46
126.49
27.39
134.16
252.95
47.43
0.007 - 0.01
-
0.00025 - 0.003
0.004 - 0.007
0.008 - 0.1
0.004 - 0.007
0.008 - 0.1
±25 ppm/ºC
±15 ppm/ºC
0.004 - 0.007
0.008 - 0.05
0.004 - 0.007
0.008 - 0.05
CSSH2728
CSS4527
4
5
31.62
100
63.25
173
±50 ppm/ºC
0.007 - 0.12
0.0005 - 0.12
Please refer to the High Power Resistor Application Note (page 6) for more information on designing and
implementing high power resistor types.
Rev Date: 06/04/2012
This specification may be changed at any time without prior notice
Please confirm technical specifications before you order and/or use.
1
www.seielect.com
marketing@seielect.com
CSS/CSSH Series
Stackpole Electronics, Inc.
Resistive Product Solutions
Ultra Precision Current Sensing Chip Resistor
Mechanical Specifications
Maximum Power Resistance Range
Type/Code
CSS1206
L
W
H
a
b
Unit
Rating (Watts)
(Ω)
inches
mm
0.126 ± 0.010
3.20 ± 0.25
0.063 ± 0.010
1.60 ± 0.25
0.025 ± 0.010
0.65 ± 0.25
0.020 ± 0.010
0.51 ± 0.25
0.020 ± 0.010
0.51 ± 0.25
1
0.001 - 0.05
inches
mm
0.200 ± 0.010
5.08 ± 0.25
0.100 ± 0.010
2.54 ± 0.25
0.031 ± 0.010
0.79 ± 0.25
0.051 ± 0.010
1.30 ± 0.25
0.051 ± 0.010
1.30 ± 0.25
0.001 - 0.003
0.0031 - 0.1
0.0005 - 0.004
0.0041 - 0.075
0.0005
CSS2010
CSS2512
1
2
inches
mm
0.200 ± 0.010
5.08 ± 0.25
0.100 ± 0.010
2.54 ± 0.25
0.025 ± 0.010
0.65 ± 0.25
0.031 ± 0.010
0.79 ± 0.25
0.031 ± 0.010
0.79 ± 0.25
inches
mm
0.246 ± 0.010
6.25 ± 0.25
0.130 ± 0.010
3.30 ± 0.25
0.031 ± 0.010
0.79 ± 0.25
0.074 ± 0.010
1.88 ± 0.25
0.074 ± 0.010
1.88 ± 0.25
inches
mm
0.246 ± 0.010
6.25 ± 0.25
0.130 ± 0.010
3.30 ± 0.25
0.025 ± 0.010
0.65 ± 0.25
0.044 ± 0.010
1.12 ± 0.25
0.044 ± 0.010
1.12 ± 0.25
inches
mm
0.246 ± 0.010
6.25 ± 0.25
0.130 ± 0.010
3.30 ± 0.25
0.031 ± 0.010
0.79 ± 0.25
0.074 ± 0.010
1.88 ± 0.25
0.074 ± 0.010
1.88 ± 0.25
0.0006 - 0.0029
0.0041 - 0.01
inches
mm
0.246 ± 0.010
6.25 ± 0.25
0.130 ± 0.010
3.30 ± 0.25
0.031 ± 0.010
0.79 ± 0.25
0.044 ± 0.010
1.12 ± 0.25
0.044 ± 0.010
1.12 ± 0.25
CSSH2512
3
inches
mm
0.246 ± 0.010
6.25 ± 0.25
0.130 ± 0.010
3.30 ± 0.25
0.031 ± 0.010
0.79 ± 0.25
0.066 ± 0.010
1.68 ± 0.25
0.066 ± 0.010
1.68 ± 0.25
0.003 - 0.004
0.00025, 0.0005
0.001
inches
mm
0.268 ± 0.010
6.81 ± 0.25
0.254 ± 0.010
6.45 ± 0.25
0.039 ± 0.010
0.99 ± 0.25
0.085 ± 0.010
2.16 ± 0.25
0.085 ± 0.010
2.16 ± 0.25
inches
mm
0.268 ± 0.010
6.81 ± 0.25
0.254 ± 0.010
6.45 ± 0.25
0.043 ± 0.010
1.09 ± 0.25
0.085 ± 0.010
2.16 ± 0.25
0.085 ± 0.010
2.16 ± 0.25
inches
mm
0.268 ± 0.010
6.81 ± 0.25
0.254 ± 0.010
6.45 ± 0.25
0.039 ± 0.010
0.99 ± 0.25
0.085 ± 0.010
2.16 ± 0.25
0.085 ± 0.010
2.16 ± 0.25
0.0015
CSS2725
4
inches
mm
0.268 ± 0.010
6.81 ± 0.25
0.254 ± 0.010
6.45 ± 0.25
0.035 ± 0.010
0.89 ± 0.25
0.071 ± 0.010
1.80 ± 0.25
0.071 ± 0.010
1.80 ± 0.25
0.002
inches
mm
0.268 ± 0.010
6.81 ± 0.25
0.254 ± 0.010
6.45 ± 0.25
0.035 ± 0.010
0.89 ± 0.25
0.065 ± 0.010
1.65 ± 0.25
0.065 ± 0.010
1.65 ± 0.25
0.0025
inches
mm
0.268 ± 0.010
6.81 ± 0.25
0.254 ± 0.010
6.45 ± 0.25
0.035 ± 0.010
0.89 ± 0.25
0.051 ± 0.010
1.30 ± 0.25
0.051 ± 0.010
1.30 ± 0.25
0.003
inches
mm
0.264 ± 0.010
6.71 ± 0.25
0.283 ± 0.010
7.19 ± 0.25
0.039 ± 0.010
0.99 ± 0.25
0.045 ± 0.010
1.14 ± 0.25
0.045 ± 0.010
1.14 ± 0.25
CSS2728
3
4
0.004 - 0.1
0.004 - 0.1
0.0005 - 0.005
0.0051 - 0.1
inches
mm
0.264 ± 0.010
6.71 ± 0.25
0.283 ± 0.010
7.19 ± 0.25
0.039 ± 0.010
0.99 ± 0.25
0.045 ± 0.010
1.14 ± 0.25
0.045 ± 0.010
1.14 ± 0.25
CSSH2728
inches
mm
inches
mm
0.450 ± 0.010
11.43 ± 0.25
0.450 ± 0.010
11.43 ± 0.25
0.270 ± 0.010
6.85 ± 0.25
0.270 ± 0.010
6.85 ± 0.25
0.059 ± 0.010
1.50 ± 0.25
0.059 ± 0.010
1.50 ± 0.25
0.038 ± 0.010
0.97 ± 0.25
0.038 ± 0.010
0.97 ± 0.25
0.127 ± 0.010
3.22 ± 0.25
0.071 ± 0.010
1.82 ± 0.25
CSS4527
5
Rev Date: 06/04/2012
This specification may be changed at any time without prior notice
Please confirm technical specifications before you order and/or use.
2
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marketing@seielect.com
CSS/CSSH Series
Stackpole Electronics, Inc.
Resistive Product Solutions
Ultra Precision Current Sensing Chip Resistor
Solder Pad Dimensions
Maximum Power Rating
(Watts)
Type/Code
CSS1206
Resistance Range (Ω)
a
b
i
Unit
inches
mm
0.063
1.60
0.086
2.18
0.039
1.00
1
0.001 - 0.05
inches
mm
0.114
2.89
0.115
2.92
0.048
1.22
0.001 - 0.003
0.0031 - 0.1
CSS2010
CSS2512
1
inches
mm
0.090
2.29
0.115
2.92
0.095
2.41
inches
mm
0.120
3.05
0.145
3.68
0.050
1.27
0.0005 - 0.004
0.0041 - 0.075
0.0005
2
3
inches
mm
0.083
2.11
0.145
3.68
0.125
3.18
inches
mm
0.120
3.05
0.145
3.68
0.050
1.27
0.0006 - 0.0029
0.0041 - 0.01
inches
mm
0.086
2.19
0.145
3.68
0.118
3.00
CSSH2512
inches
mm
0.110
2.79
0.145
3.68
0.071
1.80
0.003 - 0.004
0.00025 - 0.003
0.004 - 0.1
inches
mm
0.125
3.18
0.270
6.86
0.052
1.32
CSS2725
CSS2728
CSSH2728
4
3
4
inches
mm
0.108
2.75
0.308
7.82
0.138
3.51
inches
mm
0.108
2.75
0.308
7.82
0.138
3.51
0.004 - 0.1
inches
mm
inches
mm
0.189
4.80
0.134
3.40
0.344
8.74
0.344
8.74
0.217
5.51
0.327
8.31
0.0005 - 0.005
0.0051 - 0.12
CSS4527
5
Rev Date: 06/04/2012
This specification may be changed at any time without prior notice
Please confirm technical specifications before you order and/or use.
3
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marketing@seielect.com
CSS/CSSH Series
Stackpole Electronics, Inc.
Resistive Product Solutions
Ultra Precision Current Sensing Chip Resistor
Power Derating Curve:
100
75
50
25
300
0
50
100
150
200
250
225ºC
Ambient Temperature (ºC)
Performance Characteristics
Condition of Test
Test Item
Test Method
Test Limits
(R2-R1)
X 106
TCR (ppm/ºC)
=
Per specification
(refer to Electrical
Specification table)
Temperature Coefficient of Resistance
(TCR)
R1 (T2-T1)
JIS C 5201-1 4.8
R1: resistance of room temperature (T1)
R2: resistance of 150ºC (T2)
The number of rated power are as follows:
1. CSS1206-1W: 4 times rated power
2. CSS2010-1W: 4 times rated power
3. CSS2512-2W: 5 times rated power
4. CSSH2512-3W: 3 times rated power
5. CSS2725-4W: 4 times rated power
6. CSS2728-3W: 3 times rated power
7. CSSH2728-4W: 4 times rated power
8. CSS4527-5W: 3 times rated power
100±15V DC for 1 minute
(∆R/R1) ≤ ±0.5%
Short Time Overload
(rating power duration = 5 seconds)
JIS C 5201-1 4.13
(∆R/R1) ≤ ±2%
≥109Ω
Insulation Resistance
JIS C 5201-1 4.6
JIS C 5201-1 4.7
Applied 500V AC for 1 minute and
limit surge current 50mA (max)
Dielectric Withstanding Voltage
Without break down
Operating Temperature Range: -55°C to +225°C. Contact factory for operation at higher temperatures.
Rev Date: 06/04/2012
This specification may be changed at any time without prior notice
Please confirm technical specifications before you order and/or use.
4
www.seielect.com
marketing@seielect.com
CSS/CSSH Series
Stackpole Electronics, Inc.
Resistive Product Solutions
Ultra Precision Current Sensing Chip Resistor
How to Order
1
2
3
4
5
6
7
8
9
10
11
12
13
C
S
S
2
7
2
5
F
T
3
L
0
0
Product Series
Metal Alloy
High Power
Power
1W
1W
2W
3W
4W
3W
4W
5W
Tolerance
Packaging
Resistance Value
Size
1206
2010
2512
(H)2512
2725
2728
(H)2728
4527
Description
Size
1206
Code
Code
Quantity
4,000
CSS
CSSH
Tol
0.5%
1%
Four characters with
"L" used as multiplier
of 10-3 for any value
under 0.1 ohm.
D
F
G
J
2010, 2512
(H)2512
2725, 2728
(H)2728
4527
2,000
2%
T
7" Reel - Plastic Tape
5%
1,000
500
0.00025 ohm = L250
0.0009 ohm = L900
0.003 ohm = 3L00
Legacy Part Number (before January 3, 2011):
Nominal
Resistance Tolerance
SEI Type
Code
Packaging
CSS
2725
R
0.003
1%
Quantity
Type
CSS
CSSH
Description
Metal Alloy
High Power
Code
1206
2010
2512
(H) 2512
2725
2728
(H) 2728
4527
Wattage
1W
1W
2W
3W
4W
3W
4W
5W
Size
1206
2010
2512
2512
2725
2728
2728
4527
Tolerance
0.5%
1%
SEI Types
Description
Standard
Code
CSS1206
CSS2010
CSS2512
CSSH2512
CSS2725
CSS2728
CSSH2728
CSS4527
4,000
2%
5%
2,000
7" reel
plastic tape
R
1,000
500
Rev Date: 06/04/2012
This specification may be changed at any time without prior notice
Please confirm technical specifications before you order and/or use.
5
www.seielect.com
marketing@seielect.com
CSS/CSSH Series
Stackpole Electronics, Inc.
Resistive Product Solutions
Ultra Precision Current Sensing Chip Resistor
High Power Chip Resistors and Thermal Management
Stackpole has developed several surface mount resistor series in addition to our current sense resistors,
which have had higher power ratings than standard resistor chips. This has caused some uncertainty and
even confusion by users as to how to reliably use these resistors at the higher power ratings in their designs.
The data sheets for the RHC, RMCP, RNCP, CSR, CSRN, CSRF, CSS, and CSSH state that the rated
power assumes an ambient temperature of no more than 100 degrees C for the CSS / CSSH series and 70
degrees C for all other high power resistor series. In addition, IPC and UL best practices dictate that the
combined temperature on any resistor due to power dissipated and ambient air shall be no more than 105C.
At first glance this wouldn’t seem too difficult, however the graph below shows typical heat rise for the CSR
½ 100 milliohm at full rated power. The heat rise for the RMCP and RNCP would be similar. The RHC with
its unique materials, design, and processes would have less heat rise and therefore would be easier to
implement for any given customer.
The 102 degrees C heat rise shown here would indicate there will be additional thermal reduction techniques
needed to keep this part under 105C total hot spot temperature if this part is to be used at 0.75 watts of
power. However, this same part at the usual power rating for this size would have a heat rise of around 72
degrees C. This additional heat rise may be dealt with using wider conductor traces, larger solder pads and
land patterns under the solder mask, heavier copper in the conductors, vias through PCB, air movement, and
heat sinks, among many other techniques. Because of the variety of methods customers can use to lower
the effective heat rise of the circuit, resistor manufacturers simply specify power ratings with the limitations
on ambient air temperature and total hot spot temperatures and leave the details of how to best accomplish
this to the design engineers. Design guidelines for products in various market segments can vary widely so it
would be unnecessarily constraining for a resistor manufacturer to recommend the use of any of these
methods over another.
Note: The final resistance value can be affected by the board layout and assembly process, especially the size of the
mounting pads and the amount of solder used. This is especially notable for resistance values ≤ 50 mΩ.
This should be taken into account when designing.
Rev Date: 06/04/2012
This specification may be changed at any time without prior notice
Please confirm technical specifications before you order and/or use.
6
www.seielect.com
marketing@seielect.com
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