1733 Reader's Spreads pg1-203:document 1/27/09 4:04 PM Page 28 WK73 resistors wide terminal type flat chip resistors EU features • Flat chip resistors of wide terminal type • High reliability and performance with T.C.R. ±100 x 10-6/K, resistance tolerance ±1% • Marking: Black protective coat • 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 L c Type c L UNDER DEVELOP. (Inch Size Code) W t Inner Resistive Electrode Film d Solder Plating Ni Plating Protective Coating Ceramic Substrate Derating Curve 100 Dimensions inches (mm) W c d t 2B (0612) .063±.006 .126±.006 .012±.008 .018±.006 (1.6±0.15) (3.2±0.15) (0.3±0.2) (0.45±0.15) 2H (1020) .098±.006 .197±.006 .016±.008 (2.5±0.15) (5.0±0.15) (0.4±0.2) 2J (1218) .122±.006 .181±.006 .016±.008 .030±.006 (3.1±0.15) (4.6±0.15) (0.4±0.2) (0.75±0.15) 3A (1225) .122±.006 .252±.006 .018±.008 (3.1±0.15) (6.4±0.15) (0.45±0.2) .024±.004 (0.6±0.1) % Rated Power 80 60 40 20 0 -60 -40 -20 -55 0 20 40 60 80 100 120 140 160 70 155 Ambient Temperature (°C) ordering information New Part # WK73S 2J Type Size WK73S WK73R 2B: 0.75W 2H: 1W 2J: 1W 3A: 1.5W T Termination Material T: Sn TE Packaging TD: 0612: 7" 2mm pitch punched paper TDD: 0612 10" paper tape TE: 1020, 1218, 1225: 7" punched plastic TED: 1020, 1218, 1225: 10" punched plastic For further information on packaging, please refer to Appendix A 33L0 F Nominal Resistance ±1%: 3 significant figures + 1 multiplier “R” indicates decimal on value <100Ω ±5%: 2 significant figures + 1 multiplier “R” indicates decimal on values <10Ω All values less than 0.1Ω (100mΩ) are expressed in mΩ with “L” as decimal. Ex: 33mΩ, 1% = 33L0 Resistance Tolerance F: ±1% J: ±5% Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use. 30 11/07/08 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 4:04 PM Page 29 PMS 300 neg. Black neg. wide terminal type flat chip resistors applications and ratings Part Designation Power Rating @ 70°C WK73S2B 0.75W WK73R2B WK73R2B* WK73S2H 1.0W WK73R2H 1.0W WK73S2J 1.0W WK73R2J WK73S3A WK73R3A 1.0W 1.5W 1.5W T.C.R. (ppm/°C) Max. Resistance Range E-24 (F±1%) E-24 (J±5%) ±800 — 10m - 27m ±200 30m - 390m 30m - 390m ±100 430m - 9.1 430m - 9.1 ±100 10 - 3.3k 10 - 3.3k ±100 3.6k - 1M 3.6k - 1M ±800 — 10m - 24m ±200 27m - 200m 27m - 200m ±100 220m - 9.1 220m - 9.1 ±100 10 - 430k 10 - 430k ±200 470k - 1M 470k - 1M ±800 — 10m - 30m ±200 33m - 220m 33m - 220m ±100 240m - 9.1 240m - 9.1 ±100 10 - 510k 10 - 510k ±200 560k - 1M 560k - 1M ±800 — 10m - 20m ±300 22m - 30m 22m - 30m ±200 33m - 330m 33m - 330m ±100 360m - 9.1 360m - 9.1 ±100 10 - 330k 10 - 330k ±200 360k - 1M 360k - 1M Maximum Working Voltage Maximum Overload Voltage 200V 400V 200V 400V Operating Temperature Range -55°C to +155°C 200V 400V 200V 400V * Under Development. environmental applications Performance Characteristics Parameter Resistance T.C.R. Overload (Short time) Resistance to Solder Heat Bending Test Rapid Change of Temperature Moisture Resistance Endurance at 70°C High Temperature Exposure Requirement Limit Within specified tolerance Within specified T.C.R. ±2% ±1% ±1% ±0.5% ±2% ±2% ±1% ∆R Typical Test Method — 25°C — +25°C/-55°C and +25°C/+125°C ±0.2% ±0.2% ±0.1% ±0.1% ±0.2% ±0.2% Rated Voltage x 2.5 for 5 seconds 260°C ± 5°C, 10 seconds ± 1 second Holding point 90mm, Bending 1 time, Bending 5mm -55°C (30 minutes), +155°C (30 minutes), 5 cycles 40°C ± 2°C, 90%-95% RH, 1000 hours, 1.5 hr ON, 0.5 hr OFF cycle 70°C ± 2°C, 1000 hours, 1.5 hr ON, 0.5 hr OFF cycle ±0.2% +155°C, 1000 hours Additional environmental applications can also be found at www.koaspeer.com Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use. 12/16/08 KOA Speer Electronics, Inc. • 199 Bolivar Drive • Bradford, PA 16701 • USA • 814-362-5536 • Fax: 814-362-8883 • www.koaspeer.com 31 resistors WK73