MTBF
Mean Time Before Failures (MTBF) calculates the average time between failures of a system/equipment.
 
Lifetime
The lifetime here may also indicate the lifespan of an electrolytic capacitor as the lifetime of a power supply is usually determined by the electrolytic capacitor.

If the Y capacitor cannot be removed during the manufacturing engineering process, the test will be done after some adjustments are made to prevent the test result from being influenced by the leakage currents. The adjustments include lowering the limits of the leakage currents or turning the AC into DC in accordance with the related standards (ex. 4000 VAC = 5656 VDC).

It is not allowed to change and reset the voltage of the power supply on the customer’s side. Sinpro’s power supplies are fully tested after the output voltage is set. Changing and resetting the voltage of the power supply may lead to abnormal electrical characteristics.

HPU10A series, HPU15 series, HPU25 series are Sinpro’s standard power supplies that are compliant with EN60601-1-11. These power supplies can go with the customer’s device without modification to apply for the EN60601-1-11 standard.

Considering the EMC and the design of wiring and grounding of every piece of equipment, Sinpro gives its standard products a sufficient allowance before applying for the certificates, which makes the products can be used in widespread applications.

To tighten the test during the certificate test, the input voltage range will be increased and decreased by 10% of the input range we had submitted originally; hence, we guarantee Sinpro’s power supplies are certified for 90-264 VAC input range while the submitted input range we offer when applying for a product safety certificate is 100-240 VAC.

Learn about Sinpro's IP ratings. Discover our IP22 medical power supplies (HPA & HPU series) and IP68 LED power supplies for harsh environments.

Understand the technical differences between US DOE Level VI and EU CoC v5 Tier 2 for external power supplies. Learn about Ecodesign 2019/1782 compliance and 10% low-load testing.