WRM-HP TTELEC | Alldatasheet
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Technical content
TT Electronics reserves the right to make changes in product specification without notice or liability. All information is subject to TT Electronics’ own data and is considered accurate at time of going to print. © TT Electronics plc BI Technologies IRC Welwyn www.ttelectronics.com/resistors 01.25 Electrical Data Features:
- AEC-Q200 qualified
- High power up to 1W
- Tolerance down to 0.1%
- TCR down to 15ppm/°C
- High pulse handling capability All parts are Pb-free and comply with EU Directive 2011/65/EU amended by (EU) 2015/863 (RoHS3) Physical Data Construction A metal film is deposited onto a high dissipation ceramic former to which tin plated terminating caps are fitted. The resistor is adjusted to value by a helical cut in the film and the body is protected by a lacquer coating. Marking Resistance values are colour coded with three or four bands, indicating value and multiplier. Terminations Material Plated steel cap Solderability The pure tin finish produces ageing free contacts on which low melting solders can be used. Dipped area shall be covered with a smooth and bright solder coating after 3 seconds immersion at 215°C. Solvent Resistance The body protection and marking are resistant to all normal industrial cleaning solvents suitable for printed circuit boards.
TT Electronics reserves the right to make changes in product specification without notice or liability. All information is subject to TT Electronics’ own data and is considered accurate at time of going to print. © TT Electronics plc BI Technologies IRC Welwyn www.ttelectronics.com/resistors 01.25 TCR and Tolerance Ranges Performance Data Thermal Performance Temperature Rise Derating Curve
TT Electronics reserves the right to make changes in product specification without notice or liability. All information is subject to TT Electronics’ own data and is considered accurate at time of going to print. © TT Electronics plc BI Technologies IRC Welwyn www.ttelectronics.com/resistors 01.25 Pulse & Surge Performance Single Pulse 50 rectangular pulses applied at 60s intervals such that mean power is less than 10% of rated power. Maximum permitted change is ±1%. Continuous Pulses Continuous rectangular pulses applied at intervals such that mean power is equal to the rated power. Maximum permitted change is ±1%. 1.2/50µs Lightning Surge IEC 60115-1 1.2/50µs surge test, 10 surges. Maximum permitted change is ±0.5%. 10/700µs Lightning Surge IEC 60115-1 10/700µs surge test, 10 surges. Maximum permitted change is ±0.5%. Ordering Procedure Example: WRM0204HPC-2K49FT3 (WRM0204HP, 50ppm/°C, 2.49 kilohms ±1%, Pb-free) Packaging WRM0204HP resistors are supplied in 8mm plastic tape on 7” reels. WRM0207HP resistors are supplied in 12mm plastic tape on 7” reels. Packing complies with the requirements of IEC286-3.