H4255RBYA TE Connectivity

Axial Leaded Precision Resistors Type HOLCO Series Key Features Ultra-Precision - Down To 0.05% Low TCR Down To 5ppm/C Long Term Stability Up To 1 Watt At 70C The Holco range of Precision Metal Film Resistors meets the requirement for economically priced components for industrial and military applications. The manufacturing facility utilises closely controlled production processes including the sputter coating of metal alloy films to ceramic substrates, and laser spiralling to achieve close tolerance and high stability resistors. An epoxy coating is applied for environmental and mechanical protection. Commercially the Series is available in two case sizes, from 1 ohm to 4M ohms, tolerances from 0.05% to 1% and TCR s from 5ppm/C to 100ppm/C. Characteristics Electrical H4P H4 H8 Power rating 70C 1W 0.5W 0.25W Temperature Rise 70C 55C 40C Limiting Element 500v 350v 350v Voltage General Data Lead Material Solderability to BS CECC 40101 004 Para 4.15.1 Encapsulation Conformal Epoxy Coating Resistor Marking Legend printed in accordance with CECC 40000 Para 2.4 Solvent Resistance The epoxy coating and print will withstand the action of all commonly used industrial cleansing solvents Dimensions in Dimensions Shown for 1773230 Rev. H 03/2019 For Email, phone or live chat, millimetres unless reference purposes only. go to: www.te.com/help otherwise specified Specifications subject to change Axial Leaded Precision Resistors Resistance Range by TCR and Tolerance TCR H4P H4 H8 0.1% - 0.5% - 0.1% - 0.5% - 0.1% - 0.5% - Ppm/C 0.05% 0.05% 0.05% 0.25% 1.0% 0.25% 1.0% 0.25% 1.0% 10R- 10R- 10R- 10R- 10R- 10R- 10R- 10R- 10R- 5 500K 500K 500K 500K 500K 500K 500K 500K 500K 10R 10R 10R 10R 10R 10R 10R 10R 10R 10 1M0 1M0 1M0 1M0 1M0 1M0 1M0 1M0 1M0 10R 10R 10R 10R 10R 10R 10R 10R 10R 15 1M0 1M0 1M0 1M0 1M0 1M0 1M0 1M0 1M0 10R 10R 10R 10R 10R 10R 10R 10R 10R 25 1M0 2M0 2M0 1M0 2M0 2M0 1M0 2M0 2M0 10R 10R 10R 10R 10R 10R 10R 10R 10R 50 1M0 2M0 4M0 1M0 2M0 4M0 1M0 2M0 4M0 10R 10R 10R 10R 10R 10R 10R 10R 10R 100 1M0 2M0 4M0 1M0 2M0 4M0 1M0 2M0 4M0 Performance Characteristics Typical Data Reference Voltage Coefficient of Less Than 5ppm/Volt Applied N/A Resistance (Between 10% and Full Rated Voltage) Insulation Resistance at 500 Greater Than 10 Ohms N/A Volts Resistance to Soldering Heat Less Than 0.05% BS CECC 40101 004 Para (260C for 10 Secs.) 4.15.2 Short Term Overload Less Than 0.06% BS CECC 40101 004 Para 4.11 (6.25 Times Rated Wattage for 5 Seconds) Ambient Temperature Range -55C to +155C BS CECC 40101 004 Rapid Change of Less Than 0.04% BS CECC 40101 004 Para 4.16 Temperature (-55C to +155C, 5 cycles) Shelf Life (at Normal Room Less Than 0.05% Per Annum N/A Temp.) Vibration Less Than 0.04% BS CECC 40101 004 Para 4.19 (10-500 HZ Amplitude 0.75mm, or Acceleration 98m/s2 whichever is less severe, sweep duration 6 hours) Vibration Less Than 0.04% MIL STD 202 (55-2000 Hz Simple METHOD 204-C Harmonic Motion, Max. Acceleration 98m/s2, Duration 355 Minutes) Bump (390m/s2, 4000 Less Than 0.03% BS 2011 Part 2.1 Eb 1977 Bumps) (1984) Load Stability See graph N/A Damp Heat Steady State See Graph BS CECC 40101 004 Para 4.21 Dimensions in Dimensions Shown for 1773230 Rev. H 03/2019 For Email, phone or live chat, millimetres unless reference purposes only. go to: www.te.com/help otherwise specified Specifications subject to change