T521D475M063ATE075 vs TCJT107M006R0200
| Part Number |
|
|
| Category | Tantalum - Polymer Capacitors | Tantalum - Polymer Capacitors |
| Manufacturer | KEMET | KYOCERA AVX |
| Description | CAP TANT POLY 4.7UF 63V 2917 | CAP TANT POLY 100UF 6.3V 1411 |
| Package | Tape & Reel (TR) | Cut Tape (CT) |
| Series | KO-CAP® T521 | TCJ |
| Type | Molded | Molded |
| Features | General Purpose | General Purpose |
| Operating Temperature | -55°C ~ 125°C | -55°C ~ 105°C |
| Mounting Type | Surface Mount | Surface Mount |
| Package / Case | 2917 (7343 Metric) | 1411 (3528 Metric), 1210 |
| Tolerance | ±20% | ±20% |
| Size / Dimension | 0.287" L x 0.169" W (7.30mm x 4.30mm) | 0.138" L x 0.110" W (3.50mm x 2.80mm) |
| Voltage - Rated | 63 V | 6.3 V |
| Lead Spacing | - | - |
| Ratings | - | - |
| Height - Seated (Max) | 0.122\" (3.10mm) | 0.047\" (1.20mm) |
| Capacitance | 4.7 µF | 100 µF |
| ESR (Equivalent Series Resistance) | 75mOhm @ 100kHz | 200mOhm @ 100kHz |
| Lifetime @ Temp. | 2000 Hrs @ 125°C | 2000 Hrs @ 105°C |
| Manufacturer Size Code | D | T |
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1. What are the disadvantages of tantalum polymer capacitors?
Higher cost: They are more expensive to produce than traditional aluminum electrolytic capacitors.
Lower withstand voltage: They are usually rated for lower working voltage than aluminum electrolytic capacitors of the same size.
Temperature sensitivity: They may not perform well in extreme temperatures, especially low temperatures.
Risk of physical damage: They may be damaged if subjected to mechanical stress or excessive current surges. -
2. What is special about tantalum polymer capacitors?
Low ESR (equivalent series resistance): They are suitable for use in circuits that require fast response.
Long life: There is no liquid electrolyte, so it will not dry out and has a longer service life.
High reliability: They perform well in long-term operation.
Self-healing ability: When a local short circuit occurs, the polymer can reform the insulating layer to prevent further damage.
Volumetric efficiency: They have a high capacitance density and can provide large capacitance values in a smaller package. -
3. What is the difference between wet and dry tantalum capacitors?
Wet: An early type of tantalum capacitor that contains a liquid electrolyte, which is less common now.
Dry: A modern version that uses a solid electrolyte (such as manganese dioxide or conductive polymer) for better stability and safety. -
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.
