TCJA476M006R0070 vs T520A686M2R5ATE070
| Part Number |
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| Category | Tantalum - Polymer Capacitors | Tantalum - Polymer Capacitors |
| Manufacturer | KYOCERA AVX | KEMET |
| Description | CAP TANT POLY 47UF 6.3V 1206 | CAP TANT POLY 68UF 2.5V 1206 |
| Package | Tape & Reel (TR) | Cut Tape (CT) |
| Series | TCJ | KO-CAP® T520 |
| Type | Molded | Molded |
| Features | General Purpose | General Purpose |
| Operating Temperature | -55°C ~ 105°C | -55°C ~ 105°C |
| Mounting Type | Surface Mount | Surface Mount |
| Package / Case | 1206 (3216 Metric) | 1206 (3216 Metric) |
| Tolerance | ±20% | ±20% |
| Size / Dimension | 0.126" L x 0.063" W (3.20mm x 1.60mm) | 0.126" L x 0.063" W (3.20mm x 1.60mm) |
| Voltage - Rated | 6.3 V | 2.5 V |
| Lead Spacing | - | - |
| Ratings | - | - |
| Height - Seated (Max) | 0.071\" (1.80mm) | 0.071\" (1.80mm) |
| Capacitance | 47 µF | 68 µF |
| ESR (Equivalent Series Resistance) | 70mOhm @ 100kHz | 70mOhm @ 100kHz |
| Lifetime @ Temp. | 2000 Hrs @ 105°C | 2000 Hrs @ 105°C |
| Manufacturer Size Code | A | A |
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1. What is the difference between regular capacitors and tantalum polymer capacitors?
Construction: Regular capacitors can be non-polar (such as ceramic capacitors) or polar (such as aluminum electrolytic capacitors). Tantalum polymer capacitors are always polar and use a solid conductive polymer as the electrolyte.
Performance: Tantalum polymer capacitors generally have lower ESR, better frequency characteristics, and higher stability.
Applications: Due to their high performance characteristics, tantalum polymer capacitors are often used in electronic devices with high performance requirements. -
2. Will tantalum polymer capacitors deteriorate?
All types of capacitors will experience a certain degree of aging over time. For tantalum polymer capacitors, although the aging rate is relatively slow, they may still experience problems such as capacity loss after long-term use. In addition, improper storage conditions or excessive operating temperatures can also accelerate this process.
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3. What are the alternatives to tantalum polymer capacitors?
Aluminum electrolytic capacitors: For applications that do not require extremely high stability and low ESR.
Solid aluminum capacitors: Provide performance between traditional aluminum electrolytic capacitors and tantalum polymer capacitors.
Other solid capacitors: Choose the right alternative based on your specific needs. -
4. What are the failure modes of tantalum polymer capacitors?
Open circuit: The internal connection is broken.
Short circuit: Caused by internal defects.
Parameter drift: This includes phenomena such as reduced capacity or increased ESR.
Explosion: This may occur in extreme cases, especially when the capacitor is subjected to excessive voltage or current.
