1733 Reader's Spreads pg1-203:document 1/27/09 4:07 PM Page 76 BR resistors bga resistor networks EU features • Virtually eliminates channel capacitance, a primary cause of reduced system performance • Eases routing design of DDR SDRAM termination • High precision ±1% is standard • Saves board space and high density mounting • Marking: Black body color with white marking (cut-out) • Products with lead-free terminations meet EU RoHS requirements. Pb located in glass material, electrode and resistor element is exempt per Annex 1, exemption 5 of EU directive 2005/95/EC dimensions and construction Size Code L BR27A BR36S Ceramic Marking Inner Electrode Substrate W Dimensions inches (mm) H K P øD .039±.010 (1.0±0.25) .039±.010 (1.0±0.25) .026±.002 (0.67±0.05) .026±.002 (0.67±0.05) .020±.010 (0.50±0.25) .020±.010 (0.50±0.25) .045±.006 (1.15±0.15) .045±.006 (1.15±0.15) L .354±.006 (9.0±0.15) .087 Max. (9.0±0.15) W Coplanarity .118±.006 (3.0±0.15) .006 Max. .157±.006 (0.15 Max.) (4.0±0.15) Protective Coating H Lead-Free Solder K P Resistive Tinning Ball Film (Cu core) øD circuit schematic R1=R2=R3..... R17=R18 R1=R2=R3..... R17=R18 R17 R1 R2 R3 R17 R18 R4 R1 R2 R3 BR27A R18 R4 BR36S ordering information New Part # BR Type 27 A P T Number of Terminals 27: 27 Terminal 36: 36 Terminal Circuit Symbol A: Parallel network S: Separate Terminal Pitch P: 1 mm Termination Material T: Sn TEB Packaging TEB: 8 mm pitch embossed plastic 1001 F Nominal Resistance ±1%: 3 significant figures + multiplier “R” indicates decimal on values <100Ω Resistance Tolerance F: ±1% For further information on packaging, please refer to Appendix A. Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use. 78 2/11/08 KOA Speer Electronics, Inc. • 199 Bolivar Drive • Bradford, PA 16701 • USA • 814-362-5536 • Fax: 814-362-8883 • www.koaspeer.com 1733 Reader's Spreads pg1-203:document 1/27/09 4:07 PM Page 77 bga resistor networks applications and ratings Circuit Symbol Power Rating Resistance Range (Ω) E-24 F: ±1% T.C.R. (ppm/°C) Maximum Working Voltage Maximum Overload Voltage 27 A 36 S 0.05W / element 1W / package 10-1K ±200 25V 50V Part Number of Designation Terminals BR Rated Operating Ambient Temperature Temperature Range -55°C to +125°C +70°C environmental applications Derating Curve 100 % Rated Power 80 60 40 20 0 -60 -40 -20 -55 0 20 40 60 80 100 120 140 70 125 Ambient Temperature (°C) Performance Characteristics Parameter Resistance T.C.R. 160 Maximum ∆ R 1% within specified tolerance Within specified T.C.R. Test Method 25°C -55°C/+125°C Short Time Overload ±0.5% Rated voltage times 2.5 for 5 seconds Resistance to Soldering Heat ±0.5% 250°C±5°C, 30 seconds, 3 times Rapid Change of Temperature ±0.5% -65°C (30 min.)/+125°C (30 min.) 5 cycles Moisture Resistance 1 0.1 Rated load, 85°C, 85% RH, 1000 hours Endurance at 70°C 1 70°C, full load 2000h 1.5h ON/0.5h OFF cycle Low Temperature Storage High Temperature Exposure 0.5 1 -65°C, 24h, no load 125°C, 1000h, no load Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use. 12/28/08 KOA Speer Electronics, Inc. • 199 Bolivar Drive • Bradford, PA 16701 • USA • 814-362-5536 • Fax: 814-362-8883 • www.koaspeer.com 79 resistors BR