 |
ACCESSORIES AVAILABLE FROM 3RD PARTIES
REFERENCE > 3RD PARTY PRODUCTS >
We recommend the following shunt resistors. These have a high initial accuracy, and low temperature drift, and can
therefore be used to accurately convert a current or resistance to voltage, which is useful when working with sensors
such as RTD's and Thermistors.
Mouser Electronics
www.mouser.com, Tel 800-346-6873, Fax 817-483-0931. Mouser sells 0.1% 25ppm/C 1/4Watt resistors
between 10 ohms and 1 M ohms for $1.08 at 1 quantity and $.72 at 100 quantity. They refer to these as "Precision
Metal Film Resistors" (.1%) that are "Leaded" (wire leaded instead of surface mount). An example part would be
#66-RC55-D-2.0K, which is a 1/4W, .1%, 2K ohm resistor.
Digi-Key Corporation
www.digi-key.com, Tel 800-346-6873, Fax 817-483-0931. Digikey is similar to Mouser, yet has a much better web site.
Caddock Electronics
www.caddock.com, App Engineer: Tel 541-496-0700, Fax 496-0408, Sales: Tel 909-788-1700, Fax 909-369-1151. The "MK132 -Value - Tolerance" series parts are 3/4W, 30-5Mohms, .1% to 5% initial accuracy, 50ppm/C; and the "TF020R - Value - Tolerance - Temperature Coefficient" series parts are .33W, 1K-2Mohms, .01% to 1%, 5 to 15ppm/C. They accept VISA and MasterCard, have no minimum order, and often have items in stock.
| Resis. (ohms) |
Initial Accuracy |
Drift |
Caddock Part # |
Approx Cost Qua 1/10/100 |
0.1
1.0
10.0
200
1K
2K
4.7K
10K
20K
47K
100K
1M
|
1%
0.5%
0.1%
0.025%
0.025%
0.025%
0.025%
0.025%
0.025%
0.025%
0.025%
0.025%
|
100ppm/C
50ppm/C
50ppm/C
50ppm/C
20ppm/C
20ppm/C
20ppm/C
20ppm/C
20ppm/C
20ppm/C
20ppm/C
20ppm/C
|
#SR10-0.1-1%
#MK132-1.0-0.5%
#MK132-10-0.1%
#MK132-200-0.1%
#TN130-1K-0.025%-20
#TN130-2K-0.025%-20
#TN130-4.7K-0.025%-20
#TN130-10K-0.025%-20
#TN130-20K-0.025%-20
#TN130-47K-0.025%-20
#TN130-100K-0.025%-20
#TN130-1M-0.025%-20
|
na
na
na
$8.28/$5.52/$3.07
$8.39/$5.59/$3.11
$8.39/$5.59/$3.11
$8.39/$5.59/$3.11
$8.39/$5.59/$3.11
$8.39/$5.59/$3.11
$8.39/$5.59/$3.11
$9.67/$6.55/$3.58
na |
If the -20 suffix (20ppm/C) are not in stock, ask if the -10 (10ppm/C) or -5 (5ppm/C) are in stock. Also, instead of
TN130, you can substitute TN137 which has a lead spacing of 0.15 inches instead of 0.2 inches; yet is otherwise
identical. Also you can substitute 0.05% (or 0.1%) initial accuracy, which is adequate for most applications, instead of
0.025%. At their web site, please see their section on "Low TC and Ultra Precision" resistors for details.
TTI Electronics
www.ttiinc.com, 2 Highwood Dr, Teewksbury, Ma 01876-1194, Tel 978-851-2000, Fax 978-851-7234
Resis. (ohms) |
Initial Accuracy |
Drift |
Part # |
Approx. Cost ($USD)
/100 |
| 10 |
0.1% |
50ppm/C |
#RNC60H10R0 B |
$.99 |
| xxxy |
0.1% |
100ppm/C |
#RN60D |
$.20 |
| xxxy |
0.1% |
50ppm/C |
#RN60C |
$.27 |
| xxxy |
0.1% |
25ppm/C |
#RN60E |
$.36 |
xxxy is the ohmic value, where y is # of 0's, and xxx is the 1st 3 digits. At their web site, they refer to these as "Through hole thin film resistors".
|
|
