Standards Interpretation
IEC 60068 Environmental Test Sequence: The Order Is Not Arbitrary
Low temperature, high temperature, damp heat, thermal cycling, vibration, shock - run the same tests on the same samples in a different order and the conclusion can change completely.
阅读全文
KNOWLEDGE
Standards Interpretation
Standard clauses translated into engineering language: how to read the limits, how to choose test conditions, how to prepare samples, and where the common misunderstandings are. Every article comes from a real project.
Standards Interpretation
IEC 60068 Environmental Test Sequence: The Order Is Not Arbitrary
Low temperature, high temperature, damp heat, thermal cycling, vibration, shock - run the same tests on the same samples in a different order and the conclusion can change completely.
阅读全文
Standards Interpretation
Thermal Cycling vs Thermal Shock: Two Ways to Fail a Solder Joint
Both go from -40 C to 125 C: one ramps up over 15 minutes, the other slams there in 1 minute. The failure mechanisms are not the same.
阅读全文
Standards Interpretation
Automotive EMC Pre-testing: What Really Separates CISPR 25 from ISO 11452
One governs not disturbing others, the other governs not breaking when disturbed. Get these two lines straight and your automotive EMC test plan will not go wrong.
阅读全文
Standards Interpretation
ISO 16750-2 Electrical Loads: Eight Sub-tests and Reference Hours
Overvoltage, superimposed AC, slow decrease and increase, momentary drop, reset, starting profile, load dump and reverse voltage - duration and common failure points for each sub-test.
阅读全文
Standards Interpretation
Random or Sine Vibration? Choose Wrong and You Have Not Tested at All
Transport, vehicle mounting and in-cabinet resonance - three scenarios, three different spectra. Use the wrong one and your product may pass in the lab and still fail in the field.
阅读全文
Standards Interpretation
Choosing an IP Rating: IPX4 vs IPX5 Is Not a Small Difference
Should your outdoor product be IPX5 or IPX7? Each rating means a completely different test method and cost - choose wrong and you either overspend or fail.
阅读全文
Standards Interpretation
Salt Spray Testing: How Long Counts - 24h, 96h or 480h
时长不是拍出来的。先看产品装在哪、镀层属于哪一类，再倒推应该做多少个周期。
阅读全文
Standards Interpretation
Connector Pre-test Checklist: Mating Force, Contact Resistance, Temperature Rise and Salt Spray
一颗连接器出问题，整机排查半天。把它单独拉出来做一轮摸底，成本远低于整机返工。
阅读全文
有一份标准看不懂？
把标准号和产品发给我们，技术顾问用工程语言给你讲清楚要做哪几项。
