FLAT CHIP RESISTORS SR73 SPEER ELECTRONICS, INC. LO-OHM 1% AND 5% CURRENT SENSE RESISTORS FLAT CHIP RESISTORS FLAT CHIP RESISTOR - LOW OHMIC VALUE - Thick Film Resistor Element - Anti-Leaching Nickel Barrier Terminations - 90/10 Solder Plated Terminations, Standard - Meets or Exceeds EIA 575, EIA PDP - 100, MIL - R - 55342F - White Three or Four Digit Marking on Indigo Protective Coat. STANDARD APPLICATIONS PART DESIGNATION POWER RATING @70C SR73*2A (0805 size) 125mW SR73*2B (1206 size) 250mW SR73*2E (1210 size) 500mW SR73*2H (2010 size) 750mW SR73*3A (2512 size) 1000mW TCR (ppm/C) MAX 100 200 500 800 100 200 500 800 100 200 500 800 100 200 500 800 100 200 500 800 RESISTANCE RANGE (E-96)*** (F1%) 0.1 - 9.76 RESISTANCE RANGE (E-24)*** (G2%) (J5%) ABSOLUTE MAXIMUM WORKING VOLTAGE MAXIMUM OVERLOAD VOLTAGE 5 sec. max. 0.1 - 9.1 0.051~0.091 0.030~0.047 1.11V 2.79V 0.1 - 9.1 0.056~0.091 0.030~0.051 1.58V 3.95V 0.1 - 9.1 0.036~0.043 0.024~0.033 2.23V 5.59V 0.1 - 9.1 0.056~0.091 0.033~0.051 2.73V 6.84V 0.1 - 9.1 0.056~0.091 0.039~0.051 3.16V 7.90V OPERATING TEMPERATURE RANGE 0.1 - 9.76 -55C 0.1 - 9.76 +175C 0.1 - 9.76 0.1 - 9.76 * Indicates TempCo. "H" must be used for 1% tolerance. "K" must be used for 2% and 5% tolerance. *** See Appendix A for available decade values. ORDERING & SPECIFYING INFORMATION* SR73 H 2B T 1ROO F TYPE TEMPCO SIZE CODE PACKAGING NOMINAL RESISTANCE TOLERANCE H: 100 ppm K: 200 ppm K: 500 ppm K: 800 ppm Depending on resistance value (See Page 7) 2A: 0805 2B: 1206 2E: 1210 2H: 2010 3A: 2512 (See Appendix A) T: Punched Paper TE: Embossed Plastic TDD: 10" Punched Paper TED: 10" Embossed Plastic 1%: 3 Significant Figures + Multiplier 2%/5%: 2 Significant Figures + Multiplier R indicates decimal point F: 1% G: 2% J: 5% *Please Note: KSE's Part Numbers Do Not Contain any Spaces or Hyphens. TELEPHONE: 814-362-5536 14 FAX: 814-362-8883 FLAT CHIP RESISTORS SR73 SPEER ELECTRONICS, INC. ENVIRONMENTAL APPLICATIONS 100 125 3A 2H DERATING 100 TEMPERATURE RISE (C) % RATED POWER 80 60 40 75 2E 50 2B 2A 20 20 40 60 80 100 120 140 160 70 25 180 175 25 AMBIENT TEMPERATURE (C) MAXIMUM R PARAMETER 50 100 TEST METHOD Thermal Shock 1.0% MIL-STD-202, Method 107 -55C ~ +125C, 100 cycles Low Temperature Operation 1.0% MIL - R - 55342 4.7.4 1 Hour @ -55C followed by 45 minutes of RCWV** High Temperature Exposure 1.0% MIL - R - 55342 4.7.6 1000 Hours @ 125C Short Time Overload 2.0% MIL - R - 55342 4.7.5 2.5 X RCWV for 5 seconds Resistance to Solder Heat 1.0% MIL - R - 55342 4.7.7 260C for 10 seconds Terminal Strength-Bend 1.0% 2A & 2B 5mm, 2E, 2H & 3A 2mm Moisture Resistance 2.0% MIL - STD - 202, Method 103 40oC, 90 - 95%RH, 1000 Hours Life 2.0% MIL - STD - 202, Method 108 70C, 1000 Hours @ RCWV, 1.5 Hr ON, 0.5 Hr OFF Pulse Limitation Curves Are Available at 75 % RATED POWER www.koaspeer.com MINIMUM Terminal Adhesion 15 Grams Axial Pull, One Terminal at a Time Dielectric Withstanding Voltage 2A 2B 2E 2H 3A Insulation Resistance 400V MIL - STD - 202, Method 301 10,000 M ** RCWV - Rated Continuous Working Voltage TELEPHONE: 814-362-5536 15 FAX: 814-362-8883 FLAT CHIP RESISTORS LO -OHM 1% & 5% CURRENT SENSE RESISTORS