Engineering tools
Engineering Tools & Calculators
Free browser-based calculators we use in our own application engineering work — share the result URL with your colleagues, or use it as a first-pass spec for a quote request.
Braking Resistor Sizing Calculator
Compute peak braking power, R_max, average dissipation and per-pulse energy for VFD/servo regen.
Open calculatorRC Time Constant & Pre-charge Calculator
Pick R or target time. Get τ, t_95 / t_99, peak current, peak power for EV / energy-storage DC bus.
Open calculatorPower Derating Calculator
Linear derating model — convert nameplate watts into safe deliverable power for any ambient temperature.
Open calculatorSample Request
Sample Request
Standard samples are provided free of charge in reasonable quantities (shipped within 2–3 business days). Custom samples are delivered within 2–4 weeks. Please use the form on the right to tell us:
- Company and contact details
- Target part number or key specs (power / resistance / package)
- Application scenario and estimated annual volume
- Shipping address and expected delivery date
📧 You can also email us directly at [email protected] / 13650089870
Inquiry