Products
V476-2545
It is recommended to store in vacuum. If non-vacuum storage is adopted, attention should be paid to a temperature of 10-30°C, humidity <60% RH, and absence of corrosive gases such as acids and alkalis.
The exposure time of capacitors to air after opening the vacuum-sealed bag:
CA45 type manganese dioxide tantalum capacitors: controlled according to MSL Level 1;
CA55 type conductive polymer tantalum capacitors: controlled according to MSL Level 3.
If the vacuum packaging storage period exceeds one year, it is recommended to perform moisture removal treatment according to the following drying process table, and then weld after passing the test. If your company does not have suitable equipment for baking the products, you can contact our company by phone for assistance.
1. Storage
It is recommended to store using vacuum packaging. If non-vacuum storage is adopted, attention should be paid to a temperature of 10-30°C, relative humidity <60% RH, and no corrosive gases such as acids or alkalis.
The exposure time of capacitors after opening the vacuum-sealed bag:
CA45 type manganese dioxide tantalum capacitors: controlled according to MSL Level 1; CA55 type conductive polymer tantalum capacitors: controlled according to MSL Level 3.
If the vacuum-packaged storage period exceeds one year, it is recommended to perform moisture removal treatment according to the following drying process table, and then weld after passing the test. If your company does not have suitable equipment for baking the products, you can contact our company by phone for assistance.
| Shell number | Whole-tray drying process | Dry Process for Capacitors | |
| A、B1、B、C | 55℃、≤10%RH、72h | 85℃、24h or 105℃、12h | 125℃、12h |
| H1、H、L、D、Y、F | 55℃、≤10%RH、96h | 85℃、36h or 105℃、18h | |
| E、V、W、X、Z、G、S、T | 55℃、≤10%RH、144h | 85℃、48h or 105℃、24h | |
2. MSL Moisture Sensitivity Level
The MSL level is defined by J-STD-020. It applies to surface mount devices in non-hermetic packages, with a primary focus on resin-packaged products. Its basic concept is that resin packaging generally contains moisture, which vaporizes during reflow soldering, generating significant steam pressure. This can cause internal cracks or damage to the device and produce steam externally that impacts other nearby components on the circuit board. XIANGYEE tantalum capacitors without an indicated MSL level are classified as MSL1. Products marked with MSL3 require moisture protection.
3. Usage Risks
Although most failures of tantalum capacitors are caused by passive factors, safety hazards should not be overlooked. Capacitor failure increases the risk of malfunction in equipment using the capacitor, so circuit design must include fail-safe designs to ensure normal operation under common capacitor failure modes. Common failure modes include increased leakage current or short circuits, while other modes may involve capacitance degradation, increased loss or impedance, or open circuits. Using capacitors beyond their datasheet rated values is unsafe.
4. Manual Handling Precautions
Manually cutting terminal leads may cause skin cuts or punctures. Capacitors must be kept out of reach of children. Even after power is turned off, residual charge in capacitors must be discharged before handling, as spark discharge can ignite flammable gases.
5. Leaded Tantalum Capacitor Installation
5.1 Recommended Tantalum Capacitor Installation Method
If tantalum capacitors are installed or fixed improperly, or if the fixation is poor, they are prone to experiencing most of the mechanical stress or resonance from mechanical stresses (vibration, impact) acting on the entire unit. This ultimately leads to lead breakage and product failure.
