Received an ECQ-P1H333GZ sample only to find blurred packaging or skewed silk-screening? 90% of procurement novices fall into traps the first time. This article uses the most straightforward language to provide you with a "Three-Step Detection Method" + "Zero-Cost Tool List," allowing you to judge authenticity in 3 minutes and bid farewell to counterfeit anxiety.
Why ECQ-P1H333GZ Has Become a Major Target for Counterfeits
High Profit → High Imitation: Surge in Demand
Automotive-grade safety capacitor ECQ-P1H333GZ has a high unit price and high usage, leading to supply-demand imbalance.
3 Common Flaws in Counterfeits
- Burrs on laser silk-screening edges
- Rough mold lines on plastic casing
- Batch number font does not match official database
Three-Step Method Overview: Mastering Detection Logic Quickly for Beginners
Appearance Screening
Identify plastic shell color and silk-screen texture in 30 seconds with the naked eye
Non-destructive Verification
Mobile scan + Official website database batch number check
Deep Measurement
Read capacitance/loss values in 2 minutes with Multimeter & LCR meter
Detailed Operation: What to check, how to photograph, and how to record at each step
5 Essential Detail Photos for Appearance
Non-destructive Verification: Barcode/QR Code/Laser Code explained at once
The barcode has 18 digits: digits 1–6 are the manufacturer code, 7–10 are the year/month, and 11–14 are the serial number. Use WeChat scan to identify; if it redirects to a blank page or 404, it is definitely a counterfeit.
Authentic Parameter Comparison Table (Voltage, Capacity, Loss Angle)
| Parameter | Nominal Value | Qualified Range |
|---|---|---|
| Rated Voltage | 50 V | — |
| Capacitance | 33 nF | 29.7–36.3 nF |
| Loss Angle DF | ≤0.01 | ≤0.02 |
| Insulation Resistance | ≥15 GΩ | ≥10 GΩ |
Mobile Tools
- Barcode Scanning: Use "Wocha-cha" or "Barcode Scanner"
- LCR Calculator: Download "ElectroDroid" for frequency conversion
- Spectrometer App: Use "ColorMeter" to compare plastic shell RGB values
Desktop Equipment
- Measurement: A 4½-digit multimeter model is sufficient
- Observation: Magnifying glass with 10×–20× magnification is best
- Light Source: Use 6500 K LED standard white light
Rights Protection and Procurement Trap Avoidance Guide
Buying Channel Whitelist/Blacklist
Whitelist: Brand first-level agents, official stores, authorized distributors.
Blacklist: Small shops with no stock requesting 100% prepayment, private transactions on social platforms.
48-Hour Rapid Rights Protection
Keep complete unboxing videos + measurement data screenshots. If the platform delays, send a notarized email directly to the brand's legal department; the success rate is >90%.
