Gage with a Total Length of 080 and an Active Length of 050 with a Nominal Resistance of 345 at 78 degrees F. Further defined as Dopant P and Configured as a Bar Gage. S4 specifies Matched Set of 4 Gages
Standard Semiconductor Strain Gages are made from "P" doped bulk silicon. They have no P/N junction. The Silicon is etched to shape, eliminating the potential for molecular dislocation or cracks, thereby optimizing performance.
Standard Semiconductor UN-Backed Strain Gages are made from "P" doped bulk silicon. They have no P/N junction. The Silicon is etched to shape, eliminating the potential for molecular dislocation or cracks, thereby optimizing performance.
Standard gages are available in three shapes: "Bar", "U", and "M"
"BAR" gages have electrical leads exiting the part from both ends.
It is the gage of preference when cost needs to be minimum.
"U" gages are two parallel bar gages in series. This gage is physically and electrically connected on one end with the electrical leads exiting the other end in the same direction.
They are about 25 % more expensive than the bar gage.
"M" gages are four parallel bar gages or two parallel "U" gages with the electrical leads exiting in the same direction. Cost is twice that of the bar gage.
FAQ-Frequently Asked Questions
Which Gage Should I use?
Which Gage Should I Use.
WHICH GAGE TO USE ON YOUR PART
When the part to be gaged has a relatively large strain area, the "Bar" gage is usually selected due to its minimum cost, however when a very high resistance is required, it is less expensive to use a "U" or "M" gage.
For miniature parts it may be necessary for the leads to come off in the same direction because of limited room so the "U" or "M" gage may be more applicable.
Miniature parts often have miniature strain areas (compliant sections) and also a minimum resistance requirement. The "U" gage with comparable resistivity has twice the resistance of the bar gage with the same length and will meet this requirement.
Similarly, the "M" gage has four times the resistance over the same length.
Note:
Micron Instruments technical experts can assist you with gage selection based on your application and if needed our gaging department can apply our gages to your product.
What is Thermal Matching?
About Gage Sets-Thermal Matching.
THERMAL MATCHING CONSIDERATIONS
Semiconductor Strain Gages have large temperature coefficients of resistance making single gage strain measurements difficult unless used at a constant temperature. For this reason, gages are predominantly used in half bridge or full bridge circuits and carefully matched for slope and intercept.
PART NUMBER DETAILS
SS-060-033-500P-S2
SS designates Semiconductor Strain Gage
060 designates that the gage is 0.060 long.
033 designates the gage has an active area in the center of 0.033.
500P designates 500 ohms nominally at room temperature and it is P-doped.
S2 indicates these two gages are resistance versus temperature matched to each other.
STANDARD PACKAGING
Gages are packaged in clear plastic boxes measuring approximately one inch square.
Each clear box lid is labeled with information about the gage.
Temperature ºF is noted along with the corresponding Resistance in Ω ohms.
Gage Lot number is marked as LT.
Computer system number used to measure the resistance over temperature.
Gage position number identifies the position on the board in the temperature chamber.
Note:
The computer system also measures and records the reverse current and TCR (Thermal Coefficient of Resistance). This data is used to detect non-performing gages allowing them to be removed from production.
Gages are packaged one gage to a clear box with each box having its own label. Matched Sets will be joined together with clear plastic tape on the bottom of the boxes.
MATCHED GAGE INFORMATION
There are many uses for semiconductor strain gages and to accommodate these applications, Micron offers a number of matching options. SS-060-033-500P-xx S1 is a single gage, tested and with data. S2 is a thermally matched set of two gages, tested with data. S4 is a thermally matched set of four gages, tested with data.
We recommend a spare gage be purchased in the event that a gage is damaged during installation.
An S3 or S5 at the end of the part number should be designated for this request
For double bridges requiring eight gages you would specify an S8 at the end of the gage number or S9 for a Spare.
STANDARD MATCHING
Standard Matching is at Three Temperatures and adhere to the following tolerances.
0ºF
± 3 Ω Ohms
78ºF
± 2 Ω Ohms
278ºF
± 2 Ω Ohms
CUSTOM MATCHING
In general, tighter matching permits better performance especially with respect to bridge temperature compensation. When gages are to be used below 0°F, additional testing is required.
Micron does offer special matching upon request. (Examples Below)
500 Ohms Matched
1000 Ohms Matched
0ºF
± 2 ohms
-65ºF
± 6 ohms
78ºF
± 1 ohm
0ºF
± 6 ohms
278ºF
± 1 ohm
78ºF
± 4 ohms
278ºF
± 4 ohms
Since the options for matching and temperature are numerous, please consult with our engineers who will advise if more
accurate matching is required for your application.
"Bar" Shaped Semiconductor Strain Gage
High Stability, high accuracy, low cost semiconductor strain gages for all applications. The gages, made from P-doped silicon, are the heart of the Micron Instruments pressure and force transducers
Schematic
X = Overall Length
Y = Active Area
Z = Width
Part Number X Y
Dimension Z
Lead Type
Thickness
Resistance
@ 78 deg F
Gage Factor
TCGF*
TCR*
SS-027-013-500P
0.009"
Ball Bond
0.0004"
540 ± 50 Ohms
155 ± 10
-18%
24%
SS-037-022-500P
0.009"
Ball Bond
0.0004"
540 ± 50 Ohms
150 ± 10
-13%
17%
SS-060-033-500P
0.008"
Welded
0.0004"
540 ± 50 Ohms
140 ± 10
-13%
15%
SS-060-033-1000P
0.008"
Welded
0.0004"
1050 ± 75 Ohms
155 ± 10
-18%
24%
SS-080-050-120P
0.008"
Welded
0.0004"
120 ± 20 Ohms
120 ± 10
-9%
5%
SS-080-050-230P
0.008"
Welded
0.0004"
230 ± 30 Ohms
120 ± 10
-9%
5%
SS-080-050-345P
0.008"
Welded
0.0004"
345 ± 40 Ohms
140 ± 10
-13%
16%
SS-080-050-500P
0.008"
Welded
0.0004"
540 ± 50 Ohms
140 ± 10
-13%
16%
SS-080-050-500PB
0.008"
Ball Bond
0.0004"
540 ± 50 Ohms
140 ± 10
-13%
16%
SS-080-050-1000P
0.008"
Welded
0.0004"
1050 ± 75 Ohms
155 ± 10
-18%
24%
SS-090-060-500P
0.008"
Welded
0.0004"
540 ± 50 Ohms
140 ± 10
-13%
16%
SS-090-060-1150P
0.008"
Welded
0.0004"
1125 ± 75 Ohms
155 ± 10
-18%
24%
SS-150-125-15P
0.009"
Welded
0.0010"
15 ± 2 Ohms
100 ± 10
-10%
6%
SS-150-125-25P
0.009"
Welded
0.0008"
25 ± 3 Ohms
100 ± 10
-10%
6%
SS-250-225-120P
0.009"
Welded
0.0004"
120 ± 20 Ohms
100 ± 10
-10%
6%
Standard Bridge Matching
Temperature °F
0°
78°
278°
Standard Matching
±0.6%
±0.4%
±0.4%
Percent of Base Resistance
"U" Shaped Semiconductor Strain Gage
High Stability, high accuracy, low cost semiconductor strain gages for all applications. The gages, made from P-doped silicon, are the heart of the Micron Instruments pressure and force transducers.
Schematic
X = Overall Length
Y = Active Area
Z = Width
Part Number
X Y
Dim
Z
Lead
Type
Thickness
Resistance
@ 78 deg F
Gage Factor
TCGF*
TCR*
SS-018-011-3000PU
0.012"
Ball Bond
0.0004"
3000 ± 150 Ohms
100 ± 10
-23%
42%
SS-037-022-500PU
0.016"
Welded
0.0004"
540 ± 50 Ohms
150 ± 10
-13%
17%
SS-047-025-350PU
0.016"
Welded
0.0004"
325 ± 40 Ohms
100 ± 10
-10%
6%
SS-047-025-500PU
0.016"
Welded
0.0004"
540 ± 50 Ohms
140 ± 10
-13%
16%
SS-047-025-1000PU
0.016"
Welded
0.0004"
1000 ± 100 Ohms
160 ± 10
-20%
28%
SS-060-033-300PU
0.016"
Welded
0.0004"
325 ± 40 Ohms
100 ± 10
-10%
6%
SS-060-033-500PU
0.016"
Welded
0.0004"
540 ± 50 Ohms
140 ± 10
-12%
14%
SS-060-033-2000PU
0.016"
Welded
0.0004"
2000 ± 100 Ohms
155 ± 10
-18%
24%
SS-080-050-10000PU
0.013"
Welded
0.0004"
10000 ± 1000 Ohms
175 ± 10
-23%
42%
SS-095-060-350PU
0.016"
Welded
0.0004"
350 ± 50 Ohms
120 ± 10
-9%
5%
Standard Bridge Matching
Temperature °F
0°
78°
278°
Standard Matching
±0.6%
±0.4%
±0.4%
Percent of Base Resistance
"M" Shaped Semiconductor Strain Gage
High Stability, high accuracy, low cost semiconductor strain gages for all applications. The gages, made from P-doped silicon, are the heart of the Micron Instruments pressure and force transducers.
Schematic
X = Overall Length
Y = Active Area
Z = Width
Part Number
X Y
Dim
Z
Lead Type
Thickness
Resistance
@ 78 deg F
Gage Factor
TCGF*
TCR*
SS-060-040-2500-PM
0.032"
Welded
0.0004"
2500 ± 150 Ohms
140 ± 10
-13%
17%
Standard Bridge Matching
Temperature °F
0°
78°
278°
Standard Matching
±0.6%
±0.4%
±0.4%
Percent of Base Resistance
Semiconductor Strain Gage FAQ's and Technical Notes