VPG Foil Resistors SMR1DZ / SMR3DZ Precision SMD Resistors
VPG Foil Resistors SMR1DZ / SMR3DZ Stress-Relieved Precision SMD Resistors reduce resistance shifts caused by PCB stress. The SMR1DZ and SMR3DZ are designed for precision PCB assemblies (PCBAs) where reflow, board flex, mounting stress, or thermal expansion can shift resistance, even when the resistor has a low temperature coefficient of resistance (TCR). These VPG precision SMD resistors combine Z Foil technology with flexible stress-relief terminations that reduce stress transfer from PCBA expansion and flex.
Features
- Flexible terminations reduce stress transfer from PCBA expansion and flex
- Temperature/power coefficient
- ±0.2ppm/°C typical TCR from -55°C to +125°C, +25°C reference
- ±5ppm PCR at rated power
- Load-life stability at +70°C, 2000 hours
- 0.02% typical at 0.25W (SMR1DZ)
- 0.015% typical at 0.6W (SMR3DZ)
- Range/power
- 5Ω to 33kΩ, up to 0.25W (SMR1DZ)
- 5Ω to 80kΩ, up to 0.6W (SMR3DZ)
- Power is resistance-value dependent
Applications
- Large or mechanically active PCBAs
- Temperature-cycled electronics
- BMS and precision power electronics
- Instrumentation and calibration hardware
Specifications
- Maximum working voltage
- 73V (SMR1DZ)
- 180V (SMR3DZ)
- +175°C maximum operating temperature
- 100VDC insulation resistance, 1 minute
- 200VAC atmospheric pressure dielectric withstanding voltage, 1 minute
Dimensions
发布日期: 2026-09-10
| 更新日期: 2026-09-18