 |
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
| Datasheet File OCR Text: |
| RIEDON TO-220 Housing Rated Power 10 Watts Resistances from 0.5 to 150K Ohms High Stability Foil Resistance Elements Resistance Tolerance to 0.02% Operating Temperature -55C to +155C Low Inductance ( <50nH ) and Thermal EMF PF1220 Series Precision Foil Power Resistors Riedon's TO-220 precision foil resistors satisfy demanding applications for high accuracy and stable power resistors housed in the convenient TO-220 case. The PF1220s Nichrome foil resistance element makes a wide resistance range available. It is bonded to an Al2O3 substrate ensuring excellent power dissipation and stability. Careful choice of materials and rugged construction ensure a reliable component, and the very small tolerance and temperature coefficient provide high precision in difficult applications. SPECIFICATIONS Resistance Range - 0.5 to 150K Ohms ( 100 Ohm Max. for 4-Terminal ) Free Air Power Rating - 1.5 Watts ( Tambient=70C ) Power Rating on Heatsink - 10 Watts ( Theatsink=25C ) Thermal Resistance - 10.8C/W Temperature Coefficient - 1ppm/C ( +20C to +60C ) 3ppm/C ( -55C to +125C ) 5ppm/C ( -55C to +155C ) Stability - 0.01% Thermal EMF - < 1mV/C Proof Voltage - 1KVDC Maximum Current - 25 A Operating Temperature - -55C to +155C Resistance Element - Nichrome Foil Substrate - Al2O3 Housing - Epoxy or PPS Leads - Cu, Tinned, 2 or 4 pin Ordering information: Part Number - Resistance - Tolerance - TCR Example: PF1220 0.5 Ohm 0.1% 5ppm Resistance 0.5 to <10W 10 to <50W 50W Tolerances Available (%) 0.1, 0.25, 0.5, 1 0.05, 0.1, 0.25, 0.5, 1 0.02, 0.05, 0.1, 0.25, 0.5, 1 PF1220 Power Derating Curve 120 100 80 60 40 20 0 Power Level % 25 40 55 70 85 100 115 130 Heatsink Temperature C Riedon Inc. REV 6/05 300 Cypress Avenue Alhambra CA 91801 www.riedon.com (626) 284-9901 Fax: (626) 284-1704 RIEDON PF1220 0.40 [10.2] O0.15 [O3.7] PF1220 Series Precision Foil Power Resistors Dimensions PF1220-4 0.40 [10.2] O0.15 [O3.7] 0.05 [1.2] 0.57 [14.4] 0.65 [16.4] 0.57 [14.4] 0.68 [17.3] 0.65 [16.4] 1.08 [27.3] 0.05 [1.3] 0.03 [0.8] 0.20 [5.1] 0.05 [1.3] 0.03 [0.8] 0.02 [0.4] 0.18 [4.6] 0.08 [1.9] 0.10 [2.5] PF1221 0.40 [10.2] O0.13 [O3.2] 0.15 [3.9] O0.13 [O3.2] PF1221-4 0.40 [10.2] 0.15 [3.9] 0.16 [4.0] 0.72 [18.3] 0.57 [14.4] 0.65 [16.4] 0.57 [14.4] 0.65 [16.4] 1.11 [28.3] 0.05 [1.3] 0.03 [0.8] 0.05 [1.3] 0.03 [0.8] 0.07 [1.9] 0.20 [5.1] 0.10 [2.5] 0.02 [0.4] PF1220S 0.39 [10.0] PF1220S-4 0.39 [10.0] 0.06 [1.4] 0.16 [4.0] 0.05 [1.2] 0.50 [12.7] 0.68 [17.3] 0.50 [12.7] 0.68 [17.3] 0.08 [2.0] 0.03 [0.8] 0.20 [5.1] 0.10 [2.5] 0.03 [0.8] 0.02 [0.5] 0.44 [11.2] 0.44 [11.2] 0.48 [12.2] 0.72 [18.3] 0.72 [18.3] 0.48 [12.2] Solder Pad Layouts 0.13 [3.2] 0.07 [1.8] 0.20 [5.1] 0.13 [3.2] 0.10 [2.5] 0.07 [1.8] Riedon Inc. REV 6/05 300 Cypress Avenue Alhambra CA 91801 www.riedon.com (626) 284-9901 Fax: (626) 284-1704 |
Price & Availability of PF1221-4
 |
|
|
|
|
All Rights Reserved © IC-ON-LINE 2003 - 2022 |
| [Add Bookmark] [Contact Us] [Link exchange] [Privacy policy] |
|
Mirror Sites : [www.datasheet.hk]
[www.maxim4u.com] [www.ic-on-line.cn]
[www.ic-on-line.com] [www.ic-on-line.net]
[www.alldatasheet.com.cn]
[www.gdcy.com]
[www.gdcy.net] |