TAJA225K006RNJ AVX Corporation, TAJA225K006RNJ Datasheet - Page 27

• Manufacturer Part Number: TAJA225K006RNJ
• Description: CAP TANT 2.2UF 6.3V 10% SMD
• Manufacturer: AVX Corporation
• Series: TAJr
• Type: Moldedr

Specifications of TAJA225K006RNJ

• Capacitance: 2.2µF
• Package / Case: 1206 (3216 Metric)
• Voltage - Rated: 6.3V
• Tolerance: ±10%
• Operating Temperature: -55°C ~ 125°C
• Mounting Type: Surface Mount
• Size / Dimension: 0.126" L x 0.063" W (3.20mm x 1.60mm)
• Height: 0.063" (1.60mm)
• Manufacturer Size Code: A
• Features: General Purpose
• Tolerance (+ Or -): 10%
• Voltage: 6.3VDC
• Esr: 9Ohm
• Mounting Style: Surface Mount
• Polarity: Polar
• Construction: SMT Chip
• Case Style: Molded
• Case Code: A
• Lead Spacing (nom): Not Requiredmm
• Df: 6%
• Dcl: 0.5uA
• Seal: Not Required
• Insulation: Not Required
• Failure Rate: Not Required
• Wire Form: Not Required
• Product Length (mm): 3.2mm
• Product Height (mm): 1.6mm
• Product Depth (mm): 1.6mm
• Product Diameter (mm): Not Requiredmm
• Seated Plane Height: Not Requiredmm
• Length W/weld (max): Not Requiredmm
• Operating Temp Range: -55C to 125C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Spacing: -
• Esr (equivalent Series Resistance): -
• Lead Free Status / RoHS Status: Compliant, Lead free / RoHS Compliant
• Other names: TAJA225K006R; TAJA225K006R

33µF
25V
Questions & Answers
Some commonly asked questions regarding Tantalum
Capacitors:
Question: If I use several tantalum capacitors in serial/parallel
combinations, how can I ensure equal current and voltage
sharing?
Answer: Connecting two or more capacitors in series
and parallel combinations allows almost any value
and rating to be constructed for use in an application. For
example, a capacitance of more than 60µF is required in a
circuit for stable operation. The working voltage rail is 24
volts dc with a superimposed ripple of 1.5 volts at 120 Hz.
The maximum voltage seen by the capacitor is V dc +
V ac =25.5V
Applying the 50% derating rule tells us that a 50V
capacitor is required.
Connecting two 25V rated capacitors in series will
give the required capacitance voltage rating, but the
effective capacitance will be halved, so for greater than 60µF,
four such series combinations are required, as shown.
In order to ensure reliable operation, the capacitors should
be connected as shown below to allow current sharing of
the ac noise and ripple signals. This prevents any one
capacitor heating more than its neighbors and thus being
the weak link in the chain.
33µF
25V
33µF
25V
•
•
•
+
• •
•
• •
•
•
100K
100K
100K
16.5µF
50V
66µF
50V
The two resistors are used to ensure that the leakage
currents of the capacitors does not affect the circuit
reliability, by ensuring that all the capacitors have half
the working voltage across them.
Question: What are the advantages of tantalum over other
capacitor technologies?
Answer:
Question: How does TPS differ from your standard
product?
Answer: TPS has been designed from the initial anode
production stages for power supply applications. Special
manufacturing processes provide the most robust capacitor
dielectric by maximizing the volumetric efficiency of the
package. After manufacturing, parts are conditioned by
being subjected to elevated temperature overvoltage burn in
applied for a minimum of two hours. Parts are monitored on
a 100% basis for their direct current leakage performance at
elevated temperatures. Parts are then subjected to a low
impedance current surge. This current surge is performed on
a 100% basis with each capacitor individually monitored.
At this stage, the capacitor undergoes 100% test for
capacitance, Dissipation Factor, leakage current, and
100 KHz ESR to TPS requirements.
Question: If the part is rated as a 25 volt part and you have
current surged it, why can’t I use it at 25 volts in a low
impedance circuit?
Answer: The high volumetric efficiency obtained using
tantalum technology is accomplished by using an extremely
thin film of tantalum pentoxide as the dielectric. Even
an application of the relatively low voltage of 25 volts will
produce a large field strength as seen by the dielectric. As a
result of this, derating has a significant impact on reliability as
described under the reliability section. The following example
uses a 22 microfarad capacitor rated at 25 volts to illustrate
the point. The equation for determining the amount of
surface area for a capacitor is as follows:
1. Tantalum capacitors have high volumetric efficiency.
2. Electrical performance over temperature is very
3. They have a wide operating temperature range -55
4. They have better frequency characteristics than
5. No wear out mechanism. Because of their construction,
stable.
degrees C to +125 degrees C.
aluminum electrolytics.
solid tantalum capacitors do not degrade in perfor-
mance or reliability over time.
55